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/*
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The interface routines for reading and writing PLY polygon files.
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Greg Turk, February 1994
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---------------------------------------------------------------
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A PLY file contains a single polygonal _object_.
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An object is composed of lists of _elements_. Typical elements are
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vertices, faces, edges and materials.
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Each type of element for a given object has one or more _properties_
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associated with the element type. For instance, a vertex element may
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have as properties the floating-point values x,y,z and the three unsigned
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chars representing red, green and blue.
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---------------------------------------------------------------
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Copyright (c) 1994 The Board of Trustees of The Leland Stanford
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Junior University. All rights reserved.
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Permission to use, copy, modify and distribute this software and its
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documentation for any purpose is hereby granted without fee, provided
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that the above copyright notice and this permission notice appear in
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all copies of this software and that you do not sell the software.
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THE SOFTWARE IS PROVIDED "AS IS" AND WITHOUT WARRANTY OF ANY KIND,
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EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
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WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#include <string.h>
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#include <fcntl.h>
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#include "ply.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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char *type_names[] = {
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"invalid",
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"char", "short", "int",
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"uchar", "ushort", "uint",
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"float", "double",
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};
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int ply_type_size[] = {
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0, 1, 2, 4, 1, 2, 4, 4, 8
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};
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#define NO_OTHER_PROPS -1
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#define DONT_STORE_PROP 0
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#define STORE_PROP 1
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#define OTHER_PROP 0
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#define NAMED_PROP 1
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/* memory allocation */
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char *my_alloc();
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#define myalloc(mem_size) my_alloc((mem_size), __LINE__, __FILE__)
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/* returns 1 if strings are equal, 0 if not */
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int equal_strings(char *, char *);
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/* find an element in a plyfile's list */
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PlyElement *find_element(PlyFile *, char *);
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/* find a property in an element's list */
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PlyProperty *find_property(PlyElement *, char *, int *);
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/* write to a file the word describing a PLY file data type */
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void write_scalar_type (FILE *, int);
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/* read a line from a file and break it up into separate words */
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char **get_words(FILE *, int *, char **);
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char **old_get_words(FILE *, int *);
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/* write an item to a file */
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void write_binary_item(FILE *, int, unsigned int, double, int, int);
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void write_ascii_item(FILE *, int, unsigned int, double, int);
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double old_write_ascii_item(FILE *, char *, int);
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/* add information to a PLY file descriptor */
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void add_element(PlyFile *, char **, int);
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void add_property(PlyFile *, char **, int);
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void add_comment(PlyFile *, char *);
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void add_obj_info(PlyFile *, char *);
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/* copy a property */
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void copy_property(PlyProperty *, PlyProperty *);
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/* store a value into where a pointer and a type specify */
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void store_item(char *, int, int, unsigned int, double);
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/* return the value of a stored item */
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void get_stored_item( void *, int, int *, unsigned int *, double *);
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/* return the value stored in an item, given ptr to it and its type */
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double get_item_value(char *, int);
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/* get binary or ascii item and store it according to ptr and type */
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void get_ascii_item(char *, int, int *, unsigned int *, double *);
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void get_binary_item(FILE *, int, int *, unsigned int *, double *, int);
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/* get a bunch of elements from a file */
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void ascii_get_element(PlyFile *, char *, int);
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void binary_get_element(PlyFile *, char *, int);
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/*************/
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/* Writing */
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/*************/
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/******************************************************************************
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Given a file pointer, get ready to write PLY data to the file.
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Entry:
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fp - the given file pointer
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nelems - number of elements in object
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elem_names - list of element names
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file_type - file type, either ascii or binary
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Exit:
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returns a pointer to a PlyFile, used to refer to this file, or NULL if error
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******************************************************************************/
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PlyFile *ply_write(
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FILE *fp,
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int nelems,
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char **elem_names,
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int file_type
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)
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{
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int i;
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PlyFile *plyfile;
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PlyElement *elem;
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/* check for NULL file pointer */
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if (fp == NULL)
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return (NULL);
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#ifdef WIN32
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/* Make sure file has the correct (ascii/binary) mode */
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if (file_type == PLY_ASCII)
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setmode(fileno(fp), _O_TEXT);
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else
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setmode(fileno(fp), _O_BINARY);
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#endif
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/* create a record for this object */
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plyfile = (PlyFile *) myalloc (sizeof (PlyFile));
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plyfile->file_type = file_type;
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plyfile->num_comments = 0;
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plyfile->num_obj_info = 0;
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plyfile->nelems = nelems;
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plyfile->version = 1.0;
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plyfile->fp = fp;
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plyfile->other_elems = NULL;
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/* tuck aside the names of the elements */
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plyfile->elems = (PlyElement **) myalloc (sizeof (PlyElement *) * nelems);
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for (i = 0; i < nelems; i++) {
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elem = (PlyElement *) myalloc (sizeof (PlyElement));
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plyfile->elems[i] = elem;
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elem->name = strdup (elem_names[i]);
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elem->num = 0;
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elem->nprops = 0;
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}
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/* return pointer to the file descriptor */
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return (plyfile);
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}
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/******************************************************************************
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Open a polygon file for writing.
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Entry:
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filename - name of file to read from
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nelems - number of elements in object
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elem_names - list of element names
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file_type - file type, either ascii or binary
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Exit:
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version - version number of PLY file
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returns a file identifier, used to refer to this file, or NULL if error
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******************************************************************************/
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PlyFile *ply_open_for_writing(
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const char *filename,
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int nelems,
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char **elem_names,
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int file_type,
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float *version
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)
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{
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int i;
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PlyFile *plyfile;
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PlyElement *elem;
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char *name;
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FILE *fp;
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/* tack on the extension .ply, if necessary */
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name = (char *) myalloc (sizeof (char) * (strlen (filename) + 5));
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strcpy (name, filename);
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if (strlen (name) < 4 ||
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strcmp (name + strlen (name) - 4, ".ply") != 0)
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strcat (name, ".ply");
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/* open the file for writing */
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fp = fopen (name, "w");
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if (fp == NULL) {
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return (NULL);
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}
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/* create the actual PlyFile structure */
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plyfile = ply_write (fp, nelems, elem_names, file_type);
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if (plyfile == NULL)
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return (NULL);
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/* say what PLY file version number we're writing */
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*version = plyfile->version;
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/* return pointer to the file descriptor */
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return (plyfile);
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}
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/******************************************************************************
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Describe an element, including its properties and how many will be written
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to the file.
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Entry:
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plyfile - file identifier
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elem_name - name of element that information is being specified about
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nelems - number of elements of this type to be written
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nprops - number of properties contained in the element
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prop_list - list of properties
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******************************************************************************/
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void ply_describe_element(
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PlyFile *plyfile,
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char *elem_name,
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int nelems,
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int nprops,
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PlyProperty *prop_list
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)
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{
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int i;
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PlyElement *elem;
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PlyProperty *prop;
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/* look for appropriate element */
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elem = find_element (plyfile, elem_name);
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if (elem == NULL) {
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fprintf(stderr,"ply_describe_element: can't find element '%s'\n",elem_name);
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exit (-1);
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}
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elem->num = nelems;
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/* copy the list of properties */
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elem->nprops = nprops;
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elem->props = (PlyProperty **) myalloc (sizeof (PlyProperty *) * nprops);
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elem->store_prop = (char *) myalloc (sizeof (char) * nprops);
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for (i = 0; i < nprops; i++) {
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prop = (PlyProperty *) myalloc (sizeof (PlyProperty));
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elem->props[i] = prop;
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elem->store_prop[i] = NAMED_PROP;
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copy_property (prop, &prop_list[i]);
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}
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}
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/******************************************************************************
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Describe a property of an element.
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Entry:
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plyfile - file identifier
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elem_name - name of element that information is being specified about
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prop - the new property
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******************************************************************************/
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298 |
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299 |
void ply_describe_property(
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PlyFile *plyfile,
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char *elem_name,
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PlyProperty *prop
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)
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{
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305 |
PlyElement *elem;
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306 |
PlyProperty *elem_prop;
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/* look for appropriate element */
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elem = find_element (plyfile, elem_name);
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if (elem == NULL) {
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fprintf(stderr, "ply_describe_property: can't find element '%s'\n",
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elem_name);
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return;
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}
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/* create room for new property */
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317 |
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318 |
if (elem->nprops == 0) {
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elem->props = (PlyProperty **) myalloc (sizeof (PlyProperty *));
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elem->store_prop = (char *) myalloc (sizeof (char));
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elem->nprops = 1;
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}
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else {
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elem->nprops++;
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elem->props = (PlyProperty **)
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realloc (elem->props, sizeof (PlyProperty *) * elem->nprops);
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elem->store_prop = (char *)
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realloc (elem->store_prop, sizeof (char) * elem->nprops);
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}
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330 |
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/* copy the new property */
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332 |
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elem_prop = (PlyProperty *) myalloc (sizeof (PlyProperty));
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elem->props[elem->nprops - 1] = elem_prop;
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elem->store_prop[elem->nprops - 1] = NAMED_PROP;
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336 |
copy_property (elem_prop, prop);
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337 |
}
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338 |
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339 |
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340 |
/******************************************************************************
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341 |
Describe what the "other" properties are that are to be stored, and where
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342 |
they are in an element.
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******************************************************************************/
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344 |
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345 |
void ply_describe_other_properties(
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346 |
PlyFile *plyfile,
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347 |
PlyOtherProp *other,
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348 |
int offset
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349 |
)
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350 |
{
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351 |
int i;
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352 |
PlyElement *elem;
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353 |
PlyProperty *prop;
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354 |
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355 |
/* look for appropriate element */
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356 |
elem = find_element (plyfile, other->name);
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357 |
if (elem == NULL) {
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358 |
fprintf(stderr, "ply_describe_other_properties: can't find element '%s'\n",
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359 |
other->name);
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360 |
return;
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361 |
}
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362 |
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363 |
/* create room for other properties */
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364 |
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365 |
if (elem->nprops == 0) {
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366 |
elem->props = (PlyProperty **)
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367 |
myalloc (sizeof (PlyProperty *) * other->nprops);
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368 |
elem->store_prop = (char *) myalloc (sizeof (char) * other->nprops);
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369 |
elem->nprops = 0;
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370 |
}
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371 |
else {
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372 |
int newsize;
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373 |
newsize = elem->nprops + other->nprops;
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374 |
elem->props = (PlyProperty **)
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375 |
realloc (elem->props, sizeof (PlyProperty *) * newsize);
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376 |
elem->store_prop = (char *)
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377 |
realloc (elem->store_prop, sizeof (char) * newsize);
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378 |
}
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379 |
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380 |
/* copy the other properties */
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381 |
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382 |
for (i = 0; i < other->nprops; i++) {
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383 |
prop = (PlyProperty *) myalloc (sizeof (PlyProperty));
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384 |
copy_property (prop, other->props[i]);
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|
385 |
elem->props[elem->nprops] = prop;
|
|
|
386 |
elem->store_prop[elem->nprops] = OTHER_PROP;
|
|
|
387 |
elem->nprops++;
|
|
|
388 |
}
|
|
|
389 |
|
|
|
390 |
/* save other info about other properties */
|
|
|
391 |
elem->other_size = other->size;
|
|
|
392 |
elem->other_offset = offset;
|
|
|
393 |
}
|
|
|
394 |
|
|
|
395 |
|
|
|
396 |
/******************************************************************************
|
|
|
397 |
State how many of a given element will be written.
|
|
|
398 |
|
|
|
399 |
Entry:
|
|
|
400 |
plyfile - file identifier
|
|
|
401 |
elem_name - name of element that information is being specified about
|
|
|
402 |
nelems - number of elements of this type to be written
|
|
|
403 |
******************************************************************************/
|
|
|
404 |
|
|
|
405 |
void ply_element_count(
|
|
|
406 |
PlyFile *plyfile,
|
|
|
407 |
char *elem_name,
|
|
|
408 |
int nelems
|
|
|
409 |
)
|
|
|
410 |
{
|
|
|
411 |
int i;
|
|
|
412 |
PlyElement *elem;
|
|
|
413 |
PlyProperty *prop;
|
|
|
414 |
|
|
|
415 |
/* look for appropriate element */
|
|
|
416 |
elem = find_element (plyfile, elem_name);
|
|
|
417 |
if (elem == NULL) {
|
|
|
418 |
fprintf(stderr,"ply_element_count: can't find element '%s'\n",elem_name);
|
|
|
419 |
exit (-1);
|
|
|
420 |
}
|
|
|
421 |
|
|
|
422 |
elem->num = nelems;
|
|
|
423 |
}
|
|
|
424 |
|
|
|
425 |
|
|
|
426 |
/******************************************************************************
|
|
|
427 |
Signal that we've described everything a PLY file's header and that the
|
|
|
428 |
header should be written to the file.
|
|
|
429 |
|
|
|
430 |
Entry:
|
|
|
431 |
plyfile - file identifier
|
|
|
432 |
******************************************************************************/
|
|
|
433 |
|
|
|
434 |
void ply_header_complete(PlyFile *plyfile)
|
|
|
435 |
{
|
|
|
436 |
int i,j;
|
|
|
437 |
FILE *fp = plyfile->fp;
|
|
|
438 |
PlyElement *elem;
|
|
|
439 |
PlyProperty *prop;
|
|
|
440 |
|
|
|
441 |
fprintf (fp, "ply\n");
|
|
|
442 |
|
|
|
443 |
switch (plyfile->file_type) {
|
|
|
444 |
case PLY_ASCII:
|
|
|
445 |
fprintf (fp, "format ascii 1.0\n");
|
|
|
446 |
break;
|
|
|
447 |
case PLY_BINARY_BE:
|
|
|
448 |
fprintf (fp, "format binary_big_endian 1.0\n");
|
|
|
449 |
break;
|
|
|
450 |
case PLY_BINARY_LE:
|
|
|
451 |
fprintf (fp, "format binary_little_endian 1.0\n");
|
|
|
452 |
break;
|
|
|
453 |
default:
|
|
|
454 |
fprintf (stderr, "ply_header_complete: bad file type = %d\n",
|
|
|
455 |
plyfile->file_type);
|
|
|
456 |
exit (-1);
|
|
|
457 |
}
|
|
|
458 |
|
|
|
459 |
/* write out the comments */
|
|
|
460 |
|
|
|
461 |
for (i = 0; i < plyfile->num_comments; i++)
|
|
|
462 |
fprintf (fp, "comment %s\n", plyfile->comments[i]);
|
|
|
463 |
|
|
|
464 |
/* write out object information */
|
|
|
465 |
|
|
|
466 |
for (i = 0; i < plyfile->num_obj_info; i++)
|
|
|
467 |
fprintf (fp, "obj_info %s\n", plyfile->obj_info[i]);
|
|
|
468 |
|
|
|
469 |
/* write out information about each element */
|
|
|
470 |
|
|
|
471 |
for (i = 0; i < plyfile->nelems; i++) {
|
|
|
472 |
|
|
|
473 |
elem = plyfile->elems[i];
|
|
|
474 |
fprintf (fp, "element %s %d\n", elem->name, elem->num);
|
|
|
475 |
|
|
|
476 |
/* write out each property */
|
|
|
477 |
for (j = 0; j < elem->nprops; j++) {
|
|
|
478 |
prop = elem->props[j];
|
|
|
479 |
if (prop->is_list) {
|
|
|
480 |
fprintf (fp, "property list ");
|
|
|
481 |
write_scalar_type (fp, prop->count_external);
|
|
|
482 |
fprintf (fp, " ");
|
|
|
483 |
write_scalar_type (fp, prop->external_type);
|
|
|
484 |
fprintf (fp, " %s\n", prop->name);
|
|
|
485 |
}
|
|
|
486 |
else {
|
|
|
487 |
fprintf (fp, "property ");
|
|
|
488 |
write_scalar_type (fp, prop->external_type);
|
|
|
489 |
fprintf (fp, " %s\n", prop->name);
|
|
|
490 |
}
|
|
|
491 |
}
|
|
|
492 |
}
|
|
|
493 |
|
|
|
494 |
fprintf (fp, "end_header\n");
|
|
|
495 |
}
|
|
|
496 |
|
|
|
497 |
|
|
|
498 |
/******************************************************************************
|
|
|
499 |
Specify which elements are going to be written. This should be called
|
|
|
500 |
before a call to the routine ply_put_element().
|
|
|
501 |
|
|
|
502 |
Entry:
|
|
|
503 |
plyfile - file identifier
|
|
|
504 |
elem_name - name of element we're talking about
|
|
|
505 |
******************************************************************************/
|
|
|
506 |
|
|
|
507 |
void ply_put_element_setup(PlyFile *plyfile, char *elem_name)
|
|
|
508 |
{
|
|
|
509 |
PlyElement *elem;
|
|
|
510 |
|
|
|
511 |
elem = find_element (plyfile, elem_name);
|
|
|
512 |
if (elem == NULL) {
|
|
|
513 |
fprintf(stderr, "ply_elements_setup: can't find element '%s'\n", elem_name);
|
|
|
514 |
exit (-1);
|
|
|
515 |
}
|
|
|
516 |
|
|
|
517 |
plyfile->which_elem = elem;
|
|
|
518 |
}
|
|
|
519 |
|
|
|
520 |
|
|
|
521 |
/******************************************************************************
|
|
|
522 |
Write an element to the file. This routine assumes that we're
|
|
|
523 |
writing the type of element specified in the last call to the routine
|
|
|
524 |
ply_put_element_setup().
|
|
|
525 |
|
|
|
526 |
Entry:
|
|
|
527 |
plyfile - file identifier
|
|
|
528 |
elem_ptr - pointer to the element
|
|
|
529 |
******************************************************************************/
|
|
|
530 |
|
|
|
531 |
void ply_put_element(PlyFile *plyfile, void *elem_ptr)
|
|
|
532 |
{
|
|
|
533 |
int i,j,k;
|
|
|
534 |
FILE *fp = plyfile->fp;
|
|
|
535 |
PlyElement *elem;
|
|
|
536 |
PlyProperty *prop;
|
|
|
537 |
char *elem_data,*item;
|
|
|
538 |
char **item_ptr;
|
|
|
539 |
int list_count;
|
|
|
540 |
int item_size;
|
|
|
541 |
int int_val;
|
|
|
542 |
unsigned int uint_val;
|
|
|
543 |
double double_val;
|
|
|
544 |
char **other_ptr;
|
|
|
545 |
|
|
|
546 |
elem = plyfile->which_elem;
|
|
|
547 |
elem_data = elem_ptr;
|
|
|
548 |
other_ptr = (char **) (((char *) elem_ptr) + elem->other_offset);
|
|
|
549 |
|
|
|
550 |
/* write out either to an ascii or binary file */
|
|
|
551 |
|
|
|
552 |
if (plyfile->file_type == PLY_ASCII) {
|
|
|
553 |
|
|
|
554 |
/* write an ascii file */
|
|
|
555 |
|
|
|
556 |
/* write out each property of the element */
|
|
|
557 |
for (j = 0; j < elem->nprops; j++) {
|
|
|
558 |
prop = elem->props[j];
|
|
|
559 |
if (elem->store_prop[j] == OTHER_PROP)
|
|
|
560 |
elem_data = *other_ptr;
|
|
|
561 |
else
|
|
|
562 |
elem_data = elem_ptr;
|
|
|
563 |
if (prop->is_list) {
|
|
|
564 |
item = elem_data + prop->count_offset;
|
|
|
565 |
get_stored_item ((void *) item, prop->count_internal,
|
|
|
566 |
&int_val, &uint_val, &double_val);
|
|
|
567 |
write_ascii_item (fp, int_val, uint_val, double_val,
|
|
|
568 |
prop->count_external);
|
|
|
569 |
list_count = uint_val;
|
|
|
570 |
item_ptr = (char **) (elem_data + prop->offset);
|
|
|
571 |
item = item_ptr[0];
|
|
|
572 |
item_size = ply_type_size[prop->internal_type];
|
|
|
573 |
for (k = 0; k < list_count; k++) {
|
|
|
574 |
get_stored_item ((void *) item, prop->internal_type,
|
|
|
575 |
&int_val, &uint_val, &double_val);
|
|
|
576 |
write_ascii_item (fp, int_val, uint_val, double_val,
|
|
|
577 |
prop->external_type);
|
|
|
578 |
item += item_size;
|
|
|
579 |
}
|
|
|
580 |
}
|
|
|
581 |
else {
|
|
|
582 |
item = elem_data + prop->offset;
|
|
|
583 |
get_stored_item ((void *) item, prop->internal_type,
|
|
|
584 |
&int_val, &uint_val, &double_val);
|
|
|
585 |
write_ascii_item (fp, int_val, uint_val, double_val,
|
|
|
586 |
prop->external_type);
|
|
|
587 |
}
|
|
|
588 |
}
|
|
|
589 |
|
|
|
590 |
fprintf (fp, "\n");
|
|
|
591 |
}
|
|
|
592 |
else {
|
|
|
593 |
|
|
|
594 |
/* write a binary file */
|
|
|
595 |
|
|
|
596 |
/* write out each property of the element */
|
|
|
597 |
for (j = 0; j < elem->nprops; j++) {
|
|
|
598 |
prop = elem->props[j];
|
|
|
599 |
if (elem->store_prop[j] == OTHER_PROP)
|
|
|
600 |
elem_data = *other_ptr;
|
|
|
601 |
else
|
|
|
602 |
elem_data = elem_ptr;
|
|
|
603 |
if (prop->is_list) {
|
|
|
604 |
item = elem_data + prop->count_offset;
|
|
|
605 |
item_size = ply_type_size[prop->count_internal];
|
|
|
606 |
get_stored_item ((void *) item, prop->count_internal,
|
|
|
607 |
&int_val, &uint_val, &double_val);
|
|
|
608 |
write_binary_item (fp, int_val, uint_val, double_val,
|
|
|
609 |
prop->count_external, plyfile->file_type);
|
|
|
610 |
list_count = uint_val;
|
|
|
611 |
item_ptr = (char **) (elem_data + prop->offset);
|
|
|
612 |
item = item_ptr[0];
|
|
|
613 |
item_size = ply_type_size[prop->internal_type];
|
|
|
614 |
for (k = 0; k < list_count; k++) {
|
|
|
615 |
get_stored_item ((void *) item, prop->internal_type,
|
|
|
616 |
&int_val, &uint_val, &double_val);
|
|
|
617 |
write_binary_item (fp, int_val, uint_val, double_val,
|
|
|
618 |
prop->external_type, plyfile->file_type);
|
|
|
619 |
item += item_size;
|
|
|
620 |
}
|
|
|
621 |
}
|
|
|
622 |
else {
|
|
|
623 |
item = elem_data + prop->offset;
|
|
|
624 |
item_size = ply_type_size[prop->internal_type];
|
|
|
625 |
get_stored_item ((void *) item, prop->internal_type,
|
|
|
626 |
&int_val, &uint_val, &double_val);
|
|
|
627 |
write_binary_item (fp, int_val, uint_val, double_val,
|
|
|
628 |
prop->external_type, plyfile->file_type);
|
|
|
629 |
}
|
|
|
630 |
}
|
|
|
631 |
|
|
|
632 |
}
|
|
|
633 |
}
|
|
|
634 |
|
|
|
635 |
|
|
|
636 |
/******************************************************************************
|
|
|
637 |
Specify a comment that will be written in the header.
|
|
|
638 |
|
|
|
639 |
Entry:
|
|
|
640 |
plyfile - file identifier
|
|
|
641 |
comment - the comment to be written
|
|
|
642 |
******************************************************************************/
|
|
|
643 |
|
|
|
644 |
void ply_put_comment(PlyFile *plyfile, char *comment)
|
|
|
645 |
{
|
|
|
646 |
/* (re)allocate space for new comment */
|
|
|
647 |
if (plyfile->num_comments == 0)
|
|
|
648 |
plyfile->comments = (char **) myalloc (sizeof (char *));
|
|
|
649 |
else
|
|
|
650 |
plyfile->comments = (char **) realloc (plyfile->comments,
|
|
|
651 |
sizeof (char *) * (plyfile->num_comments + 1));
|
|
|
652 |
|
|
|
653 |
/* add comment to list */
|
|
|
654 |
plyfile->comments[plyfile->num_comments] = strdup (comment);
|
|
|
655 |
plyfile->num_comments++;
|
|
|
656 |
}
|
|
|
657 |
|
|
|
658 |
|
|
|
659 |
/******************************************************************************
|
|
|
660 |
Specify a piece of object information (arbitrary text) that will be written
|
|
|
661 |
in the header.
|
|
|
662 |
|
|
|
663 |
Entry:
|
|
|
664 |
plyfile - file identifier
|
|
|
665 |
obj_info - the text information to be written
|
|
|
666 |
******************************************************************************/
|
|
|
667 |
|
|
|
668 |
void ply_put_obj_info(PlyFile *plyfile, char *obj_info)
|
|
|
669 |
{
|
|
|
670 |
/* (re)allocate space for new info */
|
|
|
671 |
if (plyfile->num_obj_info == 0)
|
|
|
672 |
plyfile->obj_info = (char **) myalloc (sizeof (char *));
|
|
|
673 |
else
|
|
|
674 |
plyfile->obj_info = (char **) realloc (plyfile->obj_info,
|
|
|
675 |
sizeof (char *) * (plyfile->num_obj_info + 1));
|
|
|
676 |
|
|
|
677 |
/* add info to list */
|
|
|
678 |
plyfile->obj_info[plyfile->num_obj_info] = strdup (obj_info);
|
|
|
679 |
plyfile->num_obj_info++;
|
|
|
680 |
}
|
|
|
681 |
|
|
|
682 |
|
|
|
683 |
|
|
|
684 |
|
|
|
685 |
|
|
|
686 |
|
|
|
687 |
|
|
|
688 |
/*************/
|
|
|
689 |
/* Reading */
|
|
|
690 |
/*************/
|
|
|
691 |
|
|
|
692 |
|
|
|
693 |
|
|
|
694 |
/******************************************************************************
|
|
|
695 |
Given a file pointer, get ready to read PLY data from the file.
|
|
|
696 |
|
|
|
697 |
Entry:
|
|
|
698 |
fp - the given file pointer
|
|
|
699 |
|
|
|
700 |
Exit:
|
|
|
701 |
nelems - number of elements in object
|
|
|
702 |
elem_names - list of element names
|
|
|
703 |
returns a pointer to a PlyFile, used to refer to this file, or NULL if error
|
|
|
704 |
******************************************************************************/
|
|
|
705 |
|
|
|
706 |
PlyFile *ply_read(FILE *fp, int *nelems, char ***elem_names)
|
|
|
707 |
{
|
|
|
708 |
int i,j;
|
|
|
709 |
PlyFile *plyfile;
|
|
|
710 |
int nwords;
|
|
|
711 |
char **words;
|
|
|
712 |
int found_format = 0;
|
|
|
713 |
char **elist;
|
|
|
714 |
PlyElement *elem;
|
|
|
715 |
char *orig_line;
|
|
|
716 |
|
|
|
717 |
/* check for NULL file pointer */
|
|
|
718 |
if (fp == NULL)
|
|
|
719 |
return (NULL);
|
|
|
720 |
|
|
|
721 |
#ifdef WIN32
|
|
|
722 |
/* Make sure file is in ASCII mode, at least for the header */
|
|
|
723 |
setmode(fileno(fp), _O_TEXT);
|
|
|
724 |
#endif
|
|
|
725 |
|
|
|
726 |
/* create record for this object */
|
|
|
727 |
|
|
|
728 |
plyfile = (PlyFile *) myalloc (sizeof (PlyFile));
|
|
|
729 |
plyfile->nelems = 0;
|
|
|
730 |
plyfile->comments = NULL;
|
|
|
731 |
plyfile->num_comments = 0;
|
|
|
732 |
plyfile->obj_info = NULL;
|
|
|
733 |
plyfile->num_obj_info = 0;
|
|
|
734 |
plyfile->fp = fp;
|
|
|
735 |
plyfile->other_elems = NULL;
|
|
|
736 |
|
|
|
737 |
/* read and parse the file's header */
|
|
|
738 |
|
|
|
739 |
words = get_words (plyfile->fp, &nwords, &orig_line);
|
|
|
740 |
if (!words || !equal_strings (words[0], "ply"))
|
|
|
741 |
return (NULL);
|
|
|
742 |
|
|
|
743 |
while (words) {
|
|
|
744 |
|
|
|
745 |
/* parse words */
|
|
|
746 |
|
|
|
747 |
if (equal_strings (words[0], "format")) {
|
|
|
748 |
if (nwords != 3)
|
|
|
749 |
return (NULL);
|
|
|
750 |
if (equal_strings (words[1], "ascii"))
|
|
|
751 |
plyfile->file_type = PLY_ASCII;
|
|
|
752 |
else if (equal_strings (words[1], "binary_big_endian"))
|
|
|
753 |
plyfile->file_type = PLY_BINARY_BE;
|
|
|
754 |
else if (equal_strings (words[1], "binary_little_endian"))
|
|
|
755 |
plyfile->file_type = PLY_BINARY_LE;
|
|
|
756 |
else
|
|
|
757 |
return (NULL);
|
|
|
758 |
plyfile->version = atof (words[2]);
|
|
|
759 |
found_format = 1;
|
|
|
760 |
}
|
|
|
761 |
else if (equal_strings (words[0], "element"))
|
|
|
762 |
add_element (plyfile, words, nwords);
|
|
|
763 |
else if (equal_strings (words[0], "property"))
|
|
|
764 |
add_property (plyfile, words, nwords);
|
|
|
765 |
else if (equal_strings (words[0], "comment"))
|
|
|
766 |
add_comment (plyfile, orig_line);
|
|
|
767 |
else if (equal_strings (words[0], "obj_info"))
|
|
|
768 |
add_obj_info (plyfile, orig_line);
|
|
|
769 |
else if (equal_strings (words[0], "end_header"))
|
|
|
770 |
break;
|
|
|
771 |
|
|
|
772 |
/* free up words space */
|
|
|
773 |
free (words);
|
|
|
774 |
|
|
|
775 |
words = get_words (plyfile->fp, &nwords, &orig_line);
|
|
|
776 |
}
|
|
|
777 |
|
|
|
778 |
#ifdef WIN32
|
|
|
779 |
/* Make sure file has the correct (ascii/binary) mode */
|
|
|
780 |
if (plyfile->file_type == PLY_ASCII)
|
|
|
781 |
setmode(fileno(fp), _O_TEXT);
|
|
|
782 |
else
|
|
|
783 |
setmode(fileno(fp), _O_BINARY);
|
|
|
784 |
#endif
|
|
|
785 |
|
|
|
786 |
|
|
|
787 |
/* create tags for each property of each element, to be used */
|
|
|
788 |
/* later to say whether or not to store each property for the user */
|
|
|
789 |
|
|
|
790 |
for (i = 0; i < plyfile->nelems; i++) {
|
|
|
791 |
elem = plyfile->elems[i];
|
|
|
792 |
elem->store_prop = (char *) myalloc (sizeof (char) * elem->nprops);
|
|
|
793 |
for (j = 0; j < elem->nprops; j++)
|
|
|
794 |
elem->store_prop[j] = DONT_STORE_PROP;
|
|
|
795 |
elem->other_offset = NO_OTHER_PROPS; /* no "other" props by default */
|
|
|
796 |
}
|
|
|
797 |
|
|
|
798 |
/* set return values about the elements */
|
|
|
799 |
|
|
|
800 |
elist = (char **) myalloc (sizeof (char *) * plyfile->nelems);
|
|
|
801 |
for (i = 0; i < plyfile->nelems; i++)
|
|
|
802 |
elist[i] = strdup (plyfile->elems[i]->name);
|
|
|
803 |
|
|
|
804 |
*elem_names = elist;
|
|
|
805 |
*nelems = plyfile->nelems;
|
|
|
806 |
|
|
|
807 |
/* return a pointer to the file's information */
|
|
|
808 |
|
|
|
809 |
return (plyfile);
|
|
|
810 |
}
|
|
|
811 |
|
|
|
812 |
|
|
|
813 |
/******************************************************************************
|
|
|
814 |
Open a polygon file for reading.
|
|
|
815 |
|
|
|
816 |
Entry:
|
|
|
817 |
filename - name of file to read from
|
|
|
818 |
|
|
|
819 |
Exit:
|
|
|
820 |
nelems - number of elements in object
|
|
|
821 |
elem_names - list of element names
|
|
|
822 |
file_type - file type, either ascii or binary
|
|
|
823 |
version - version number of PLY file
|
|
|
824 |
returns a file identifier, used to refer to this file, or NULL if error
|
|
|
825 |
******************************************************************************/
|
|
|
826 |
|
|
|
827 |
PlyFile *ply_open_for_reading(
|
|
|
828 |
const char *filename,
|
|
|
829 |
int *nelems,
|
|
|
830 |
char ***elem_names,
|
|
|
831 |
int *file_type,
|
|
|
832 |
float *version
|
|
|
833 |
)
|
|
|
834 |
{
|
|
|
835 |
FILE *fp;
|
|
|
836 |
PlyFile *plyfile;
|
|
|
837 |
char *name;
|
|
|
838 |
|
|
|
839 |
/* tack on the extension .ply, if necessary */
|
|
|
840 |
|
|
|
841 |
name = (char *) myalloc (sizeof (char) * (strlen (filename) + 5));
|
|
|
842 |
strcpy (name, filename);
|
|
|
843 |
if (strlen (name) < 4 ||
|
|
|
844 |
strcmp (name + strlen (name) - 4, ".ply") != 0)
|
|
|
845 |
strcat (name, ".ply");
|
|
|
846 |
|
|
|
847 |
/* open the file for reading */
|
|
|
848 |
|
|
|
849 |
fp = fopen (name, "r");
|
|
|
850 |
if (fp == NULL)
|
|
|
851 |
return (NULL);
|
|
|
852 |
|
|
|
853 |
/* create the PlyFile data structure */
|
|
|
854 |
|
|
|
855 |
plyfile = ply_read (fp, nelems, elem_names);
|
|
|
856 |
|
|
|
857 |
/* determine the file type and version */
|
|
|
858 |
|
|
|
859 |
*file_type = plyfile->file_type;
|
|
|
860 |
*version = plyfile->version;
|
|
|
861 |
|
|
|
862 |
/* return a pointer to the file's information */
|
|
|
863 |
|
|
|
864 |
return (plyfile);
|
|
|
865 |
}
|
|
|
866 |
|
|
|
867 |
|
|
|
868 |
/******************************************************************************
|
|
|
869 |
Get information about a particular element.
|
|
|
870 |
|
|
|
871 |
Entry:
|
|
|
872 |
plyfile - file identifier
|
|
|
873 |
elem_name - name of element to get information about
|
|
|
874 |
|
|
|
875 |
Exit:
|
|
|
876 |
nelems - number of elements of this type in the file
|
|
|
877 |
nprops - number of properties
|
|
|
878 |
returns a list of properties, or NULL if the file doesn't contain that elem
|
|
|
879 |
******************************************************************************/
|
|
|
880 |
|
|
|
881 |
PlyProperty **ply_get_element_description(
|
|
|
882 |
PlyFile *plyfile,
|
|
|
883 |
char *elem_name,
|
|
|
884 |
int *nelems,
|
|
|
885 |
int *nprops
|
|
|
886 |
)
|
|
|
887 |
{
|
|
|
888 |
int i;
|
|
|
889 |
PlyElement *elem;
|
|
|
890 |
PlyProperty *prop;
|
|
|
891 |
PlyProperty **prop_list;
|
|
|
892 |
|
|
|
893 |
/* find information about the element */
|
|
|
894 |
elem = find_element (plyfile, elem_name);
|
|
|
895 |
if (elem == NULL)
|
|
|
896 |
return (NULL);
|
|
|
897 |
|
|
|
898 |
*nelems = elem->num;
|
|
|
899 |
*nprops = elem->nprops;
|
|
|
900 |
|
|
|
901 |
/* make a copy of the element's property list */
|
|
|
902 |
prop_list = (PlyProperty **) myalloc (sizeof (PlyProperty *) * elem->nprops);
|
|
|
903 |
for (i = 0; i < elem->nprops; i++) {
|
|
|
904 |
prop = (PlyProperty *) myalloc (sizeof (PlyProperty));
|
|
|
905 |
copy_property (prop, elem->props[i]);
|
|
|
906 |
prop_list[i] = prop;
|
|
|
907 |
}
|
|
|
908 |
|
|
|
909 |
/* return this duplicate property list */
|
|
|
910 |
return (prop_list);
|
|
|
911 |
}
|
|
|
912 |
|
|
|
913 |
|
|
|
914 |
/******************************************************************************
|
|
|
915 |
Specify which properties of an element are to be returned. This should be
|
|
|
916 |
called before a call to the routine ply_get_element().
|
|
|
917 |
|
|
|
918 |
Entry:
|
|
|
919 |
plyfile - file identifier
|
|
|
920 |
elem_name - which element we're talking about
|
|
|
921 |
nprops - number of properties
|
|
|
922 |
prop_list - list of properties
|
|
|
923 |
******************************************************************************/
|
|
|
924 |
|
|
|
925 |
void ply_get_element_setup(
|
|
|
926 |
PlyFile *plyfile,
|
|
|
927 |
char *elem_name,
|
|
|
928 |
int nprops,
|
|
|
929 |
PlyProperty *prop_list
|
|
|
930 |
)
|
|
|
931 |
{
|
|
|
932 |
int i;
|
|
|
933 |
PlyElement *elem;
|
|
|
934 |
PlyProperty *prop;
|
|
|
935 |
int index;
|
|
|
936 |
|
|
|
937 |
/* find information about the element */
|
|
|
938 |
elem = find_element (plyfile, elem_name);
|
|
|
939 |
plyfile->which_elem = elem;
|
|
|
940 |
|
|
|
941 |
/* deposit the property information into the element's description */
|
|
|
942 |
for (i = 0; i < nprops; i++) {
|
|
|
943 |
|
|
|
944 |
/* look for actual property */
|
|
|
945 |
prop = find_property (elem, prop_list[i].name, &index);
|
|
|
946 |
if (prop == NULL) {
|
|
|
947 |
fprintf (stderr, "Warning: Can't find property '%s' in element '%s'\n",
|
|
|
948 |
prop_list[i].name, elem_name);
|
|
|
949 |
continue;
|
|
|
950 |
}
|
|
|
951 |
|
|
|
952 |
/* store its description */
|
|
|
953 |
prop->internal_type = prop_list[i].internal_type;
|
|
|
954 |
prop->offset = prop_list[i].offset;
|
|
|
955 |
prop->count_internal = prop_list[i].count_internal;
|
|
|
956 |
prop->count_offset = prop_list[i].count_offset;
|
|
|
957 |
|
|
|
958 |
/* specify that the user wants this property */
|
|
|
959 |
elem->store_prop[index] = STORE_PROP;
|
|
|
960 |
}
|
|
|
961 |
}
|
|
|
962 |
|
|
|
963 |
|
|
|
964 |
/******************************************************************************
|
|
|
965 |
Specify a property of an element that is to be returned. This should be
|
|
|
966 |
called (usually multiple times) before a call to the routine ply_get_element().
|
|
|
967 |
This routine should be used in preference to the less flexible old routine
|
|
|
968 |
called ply_get_element_setup().
|
|
|
969 |
|
|
|
970 |
Entry:
|
|
|
971 |
plyfile - file identifier
|
|
|
972 |
elem_name - which element we're talking about
|
|
|
973 |
prop - property to add to those that will be returned
|
|
|
974 |
******************************************************************************/
|
|
|
975 |
|
|
|
976 |
void ply_get_property(
|
|
|
977 |
PlyFile *plyfile,
|
|
|
978 |
char *elem_name,
|
|
|
979 |
PlyProperty *prop
|
|
|
980 |
)
|
|
|
981 |
{
|
|
|
982 |
PlyElement *elem;
|
|
|
983 |
PlyProperty *prop_ptr;
|
|
|
984 |
int index;
|
|
|
985 |
|
|
|
986 |
/* find information about the element */
|
|
|
987 |
elem = find_element (plyfile, elem_name);
|
|
|
988 |
plyfile->which_elem = elem;
|
|
|
989 |
|
|
|
990 |
/* deposit the property information into the element's description */
|
|
|
991 |
|
|
|
992 |
prop_ptr = find_property (elem, prop->name, &index);
|
|
|
993 |
if (prop_ptr == NULL) {
|
|
|
994 |
fprintf (stderr, "Warning: Can't find property '%s' in element '%s'\n",
|
|
|
995 |
prop->name, elem_name);
|
|
|
996 |
return;
|
|
|
997 |
}
|
|
|
998 |
prop_ptr->internal_type = prop->internal_type;
|
|
|
999 |
prop_ptr->offset = prop->offset;
|
|
|
1000 |
prop_ptr->count_internal = prop->count_internal;
|
|
|
1001 |
prop_ptr->count_offset = prop->count_offset;
|
|
|
1002 |
|
|
|
1003 |
/* specify that the user wants this property */
|
|
|
1004 |
elem->store_prop[index] = STORE_PROP;
|
|
|
1005 |
}
|
|
|
1006 |
|
|
|
1007 |
|
|
|
1008 |
/******************************************************************************
|
|
|
1009 |
Read one element from the file. This routine assumes that we're reading
|
|
|
1010 |
the type of element specified in the last call to the routine
|
|
|
1011 |
ply_get_element_setup().
|
|
|
1012 |
|
|
|
1013 |
Entry:
|
|
|
1014 |
plyfile - file identifier
|
|
|
1015 |
elem_ptr - pointer to location where the element information should be put
|
|
|
1016 |
******************************************************************************/
|
|
|
1017 |
|
|
|
1018 |
void
|
|
|
1019 |
ply_get_element(PlyFile *plyfile, void *elem_ptr)
|
|
|
1020 |
{
|
|
|
1021 |
if (plyfile->file_type == PLY_ASCII)
|
|
|
1022 |
ascii_get_element (plyfile, (char *) elem_ptr, 0);
|
|
|
1023 |
else
|
|
|
1024 |
binary_get_element (plyfile, (char *) elem_ptr, 0);
|
|
|
1025 |
}
|
|
|
1026 |
|
|
|
1027 |
|
|
|
1028 |
void
|
|
|
1029 |
ply_get_element_noalloc(PlyFile *plyfile, void *elem_ptr)
|
|
|
1030 |
{
|
|
|
1031 |
if (plyfile->file_type == PLY_ASCII)
|
|
|
1032 |
ascii_get_element (plyfile, (char *) elem_ptr, 1);
|
|
|
1033 |
else
|
|
|
1034 |
binary_get_element (plyfile, (char *) elem_ptr, 1);
|
|
|
1035 |
}
|
|
|
1036 |
|
|
|
1037 |
|
|
|
1038 |
/******************************************************************************
|
|
|
1039 |
Extract the comments from the header information of a PLY file.
|
|
|
1040 |
|
|
|
1041 |
Entry:
|
|
|
1042 |
plyfile - file identifier
|
|
|
1043 |
|
|
|
1044 |
Exit:
|
|
|
1045 |
num_comments - number of comments returned
|
|
|
1046 |
returns a pointer to a list of comments
|
|
|
1047 |
******************************************************************************/
|
|
|
1048 |
|
|
|
1049 |
char **ply_get_comments(PlyFile *plyfile, int *num_comments)
|
|
|
1050 |
{
|
|
|
1051 |
*num_comments = plyfile->num_comments;
|
|
|
1052 |
return (plyfile->comments);
|
|
|
1053 |
}
|
|
|
1054 |
|
|
|
1055 |
|
|
|
1056 |
/******************************************************************************
|
|
|
1057 |
Extract the object information (arbitrary text) from the header information
|
|
|
1058 |
of a PLY file.
|
|
|
1059 |
|
|
|
1060 |
Entry:
|
|
|
1061 |
plyfile - file identifier
|
|
|
1062 |
|
|
|
1063 |
Exit:
|
|
|
1064 |
num_obj_info - number of lines of text information returned
|
|
|
1065 |
returns a pointer to a list of object info lines
|
|
|
1066 |
******************************************************************************/
|
|
|
1067 |
|
|
|
1068 |
char **ply_get_obj_info(PlyFile *plyfile, int *num_obj_info)
|
|
|
1069 |
{
|
|
|
1070 |
*num_obj_info = plyfile->num_obj_info;
|
|
|
1071 |
return (plyfile->obj_info);
|
|
|
1072 |
}
|
|
|
1073 |
|
|
|
1074 |
|
|
|
1075 |
/******************************************************************************
|
|
|
1076 |
Make ready for "other" properties of an element-- those properties that
|
|
|
1077 |
the user has not explicitly asked for, but that are to be stashed away
|
|
|
1078 |
in a special structure to be carried along with the element's other
|
|
|
1079 |
information.
|
|
|
1080 |
|
|
|
1081 |
Entry:
|
|
|
1082 |
plyfile - file identifier
|
|
|
1083 |
elem - element for which we want to save away other properties
|
|
|
1084 |
******************************************************************************/
|
|
|
1085 |
|
|
|
1086 |
void setup_other_props(PlyFile *plyfile, PlyElement *elem)
|
|
|
1087 |
{
|
|
|
1088 |
int i;
|
|
|
1089 |
PlyProperty *prop;
|
|
|
1090 |
int size = 0;
|
|
|
1091 |
int type_size;
|
|
|
1092 |
|
|
|
1093 |
/* Examine each property in decreasing order of size. */
|
|
|
1094 |
/* We do this so that all data types will be aligned by */
|
|
|
1095 |
/* word, half-word, or whatever within the structure. */
|
|
|
1096 |
|
|
|
1097 |
for (type_size = 8; type_size > 0; type_size /= 2) {
|
|
|
1098 |
|
|
|
1099 |
/* add up the space taken by each property, and save this information */
|
|
|
1100 |
/* away in the property descriptor */
|
|
|
1101 |
|
|
|
1102 |
for (i = 0; i < elem->nprops; i++) {
|
|
|
1103 |
|
|
|
1104 |
/* don't bother with properties we've been asked to store explicitly */
|
|
|
1105 |
if (elem->store_prop[i])
|
|
|
1106 |
continue;
|
|
|
1107 |
|
|
|
1108 |
prop = elem->props[i];
|
|
|
1109 |
|
|
|
1110 |
/* internal types will be same as external */
|
|
|
1111 |
prop->internal_type = prop->external_type;
|
|
|
1112 |
prop->count_internal = prop->count_external;
|
|
|
1113 |
|
|
|
1114 |
/* check list case */
|
|
|
1115 |
if (prop->is_list) {
|
|
|
1116 |
|
|
|
1117 |
/* pointer to list */
|
|
|
1118 |
if (type_size == sizeof (void *)) {
|
|
|
1119 |
prop->offset = size;
|
|
|
1120 |
size += sizeof (void *); /* always use size of a pointer here */
|
|
|
1121 |
}
|
|
|
1122 |
|
|
|
1123 |
/* count of number of list elements */
|
|
|
1124 |
if (type_size == ply_type_size[prop->count_external]) {
|
|
|
1125 |
prop->count_offset = size;
|
|
|
1126 |
size += ply_type_size[prop->count_external];
|
|
|
1127 |
}
|
|
|
1128 |
}
|
|
|
1129 |
/* not list */
|
|
|
1130 |
else if (type_size == ply_type_size[prop->external_type]) {
|
|
|
1131 |
prop->offset = size;
|
|
|
1132 |
size += ply_type_size[prop->external_type];
|
|
|
1133 |
}
|
|
|
1134 |
}
|
|
|
1135 |
|
|
|
1136 |
}
|
|
|
1137 |
|
|
|
1138 |
/* save the size for the other_props structure */
|
|
|
1139 |
elem->other_size = size;
|
|
|
1140 |
}
|
|
|
1141 |
|
|
|
1142 |
|
|
|
1143 |
/******************************************************************************
|
|
|
1144 |
Specify that we want the "other" properties of an element to be tucked
|
|
|
1145 |
away within the user's structure. The user needn't be concerned for how
|
|
|
1146 |
these properties are stored.
|
|
|
1147 |
|
|
|
1148 |
Entry:
|
|
|
1149 |
plyfile - file identifier
|
|
|
1150 |
elem_name - name of element that we want to store other_props in
|
|
|
1151 |
offset - offset to where other_props will be stored inside user's structure
|
|
|
1152 |
|
|
|
1153 |
Exit:
|
|
|
1154 |
returns pointer to structure containing description of other_props
|
|
|
1155 |
******************************************************************************/
|
|
|
1156 |
|
|
|
1157 |
PlyOtherProp *ply_get_other_properties(
|
|
|
1158 |
PlyFile *plyfile,
|
|
|
1159 |
char *elem_name,
|
|
|
1160 |
int offset
|
|
|
1161 |
)
|
|
|
1162 |
{
|
|
|
1163 |
int i;
|
|
|
1164 |
PlyElement *elem;
|
|
|
1165 |
PlyOtherProp *other;
|
|
|
1166 |
PlyProperty *prop;
|
|
|
1167 |
int nprops;
|
|
|
1168 |
|
|
|
1169 |
/* find information about the element */
|
|
|
1170 |
elem = find_element (plyfile, elem_name);
|
|
|
1171 |
if (elem == NULL) {
|
|
|
1172 |
fprintf (stderr, "ply_get_other_properties: Can't find element '%s'\n",
|
|
|
1173 |
elem_name);
|
|
|
1174 |
return (NULL);
|
|
|
1175 |
}
|
|
|
1176 |
|
|
|
1177 |
/* remember that this is the "current" element */
|
|
|
1178 |
plyfile->which_elem = elem;
|
|
|
1179 |
|
|
|
1180 |
/* save the offset to where to store the other_props */
|
|
|
1181 |
elem->other_offset = offset;
|
|
|
1182 |
|
|
|
1183 |
/* place the appropriate pointers, etc. in the element's property list */
|
|
|
1184 |
setup_other_props (plyfile, elem);
|
|
|
1185 |
|
|
|
1186 |
/* create structure for describing other_props */
|
|
|
1187 |
other = (PlyOtherProp *) myalloc (sizeof (PlyOtherProp));
|
|
|
1188 |
other->name = strdup (elem_name);
|
|
|
1189 |
#if 0
|
|
|
1190 |
if (elem->other_offset == NO_OTHER_PROPS) {
|
|
|
1191 |
other->size = 0;
|
|
|
1192 |
other->props = NULL;
|
|
|
1193 |
other->nprops = 0;
|
|
|
1194 |
return (other);
|
|
|
1195 |
}
|
|
|
1196 |
#endif
|
|
|
1197 |
other->size = elem->other_size;
|
|
|
1198 |
other->props = (PlyProperty **) myalloc (sizeof(PlyProperty) * elem->nprops);
|
|
|
1199 |
|
|
|
1200 |
/* save descriptions of each "other" property */
|
|
|
1201 |
nprops = 0;
|
|
|
1202 |
for (i = 0; i < elem->nprops; i++) {
|
|
|
1203 |
if (elem->store_prop[i])
|
|
|
1204 |
continue;
|
|
|
1205 |
prop = (PlyProperty *) myalloc (sizeof (PlyProperty));
|
|
|
1206 |
copy_property (prop, elem->props[i]);
|
|
|
1207 |
other->props[nprops] = prop;
|
|
|
1208 |
nprops++;
|
|
|
1209 |
}
|
|
|
1210 |
other->nprops = nprops;
|
|
|
1211 |
|
|
|
1212 |
#if 1
|
|
|
1213 |
/* set other_offset pointer appropriately if there are NO other properties */
|
|
|
1214 |
if (other->nprops == 0) {
|
|
|
1215 |
elem->other_offset = NO_OTHER_PROPS;
|
|
|
1216 |
}
|
|
|
1217 |
#endif
|
|
|
1218 |
|
|
|
1219 |
/* return structure */
|
|
|
1220 |
return (other);
|
|
|
1221 |
}
|
|
|
1222 |
|
|
|
1223 |
|
|
|
1224 |
|
|
|
1225 |
|
|
|
1226 |
/*************************/
|
|
|
1227 |
/* Other Element Stuff */
|
|
|
1228 |
/*************************/
|
|
|
1229 |
|
|
|
1230 |
|
|
|
1231 |
|
|
|
1232 |
|
|
|
1233 |
/******************************************************************************
|
|
|
1234 |
Grab all the data for an element that a user does not want to explicitly
|
|
|
1235 |
read in.
|
|
|
1236 |
|
|
|
1237 |
Entry:
|
|
|
1238 |
plyfile - pointer to file
|
|
|
1239 |
elem_name - name of element whose data is to be read in
|
|
|
1240 |
elem_count - number of instances of this element stored in the file
|
|
|
1241 |
|
|
|
1242 |
Exit:
|
|
|
1243 |
returns pointer to ALL the "other" element data for this PLY file
|
|
|
1244 |
******************************************************************************/
|
|
|
1245 |
|
|
|
1246 |
PlyOtherElems *ply_get_other_element (
|
|
|
1247 |
PlyFile *plyfile,
|
|
|
1248 |
char *elem_name,
|
|
|
1249 |
int elem_count
|
|
|
1250 |
)
|
|
|
1251 |
{
|
|
|
1252 |
int i;
|
|
|
1253 |
PlyElement *elem;
|
|
|
1254 |
PlyOtherElems *other_elems;
|
|
|
1255 |
OtherElem *other;
|
|
|
1256 |
int num_elems;
|
|
|
1257 |
|
|
|
1258 |
/* look for appropriate element */
|
|
|
1259 |
elem = find_element (plyfile, elem_name);
|
|
|
1260 |
if (elem == NULL) {
|
|
|
1261 |
fprintf (stderr,
|
|
|
1262 |
"ply_get_other_element: can't find element '%s'\n", elem_name);
|
|
|
1263 |
exit (-1);
|
|
|
1264 |
}
|
|
|
1265 |
|
|
|
1266 |
/* create room for the new "other" element, initializing the */
|
|
|
1267 |
/* other data structure if necessary */
|
|
|
1268 |
|
|
|
1269 |
if (plyfile->other_elems == NULL) {
|
|
|
1270 |
plyfile->other_elems = (PlyOtherElems *) myalloc (sizeof (PlyOtherElems));
|
|
|
1271 |
other_elems = plyfile->other_elems;
|
|
|
1272 |
other_elems->other_list = (OtherElem *) myalloc (sizeof (OtherElem));
|
|
|
1273 |
other = &(other_elems->other_list[0]);
|
|
|
1274 |
other_elems->num_elems = 1;
|
|
|
1275 |
}
|
|
|
1276 |
else {
|
|
|
1277 |
other_elems = plyfile->other_elems;
|
|
|
1278 |
other_elems->other_list = (OtherElem *) realloc (other_elems->other_list,
|
|
|
1279 |
sizeof (OtherElem) * other_elems->num_elems + 1);
|
|
|
1280 |
other = &(other_elems->other_list[other_elems->num_elems]);
|
|
|
1281 |
other_elems->num_elems++;
|
|
|
1282 |
}
|
|
|
1283 |
|
|
|
1284 |
/* count of element instances in file */
|
|
|
1285 |
other->elem_count = elem_count;
|
|
|
1286 |
|
|
|
1287 |
/* save name of element */
|
|
|
1288 |
other->elem_name = strdup (elem_name);
|
|
|
1289 |
|
|
|
1290 |
/* create a list to hold all the current elements */
|
|
|
1291 |
other->other_data = (OtherData **)
|
|
|
1292 |
malloc (sizeof (OtherData *) * other->elem_count);
|
|
|
1293 |
|
|
|
1294 |
/* set up for getting elements */
|
|
|
1295 |
other->other_props = ply_get_other_properties (plyfile, elem_name,
|
|
|
1296 |
offsetof(OtherData,other_props));
|
|
|
1297 |
|
|
|
1298 |
/* grab all these elements */
|
|
|
1299 |
for (i = 0; i < other->elem_count; i++) {
|
|
|
1300 |
/* grab and element from the file */
|
|
|
1301 |
other->other_data[i] = (OtherData *) malloc (sizeof (OtherData));
|
|
|
1302 |
ply_get_element (plyfile, (void *) other->other_data[i]);
|
|
|
1303 |
}
|
|
|
1304 |
|
|
|
1305 |
/* return pointer to the other elements data */
|
|
|
1306 |
return (other_elems);
|
|
|
1307 |
}
|
|
|
1308 |
|
|
|
1309 |
|
|
|
1310 |
/******************************************************************************
|
|
|
1311 |
Pass along a pointer to "other" elements that we want to save in a given
|
|
|
1312 |
PLY file. These other elements were presumably read from another PLY file.
|
|
|
1313 |
|
|
|
1314 |
Entry:
|
|
|
1315 |
plyfile - file pointer in which to store this other element info
|
|
|
1316 |
other_elems - info about other elements that we want to store
|
|
|
1317 |
******************************************************************************/
|
|
|
1318 |
|
|
|
1319 |
void ply_describe_other_elements (
|
|
|
1320 |
PlyFile *plyfile,
|
|
|
1321 |
PlyOtherElems *other_elems
|
|
|
1322 |
)
|
|
|
1323 |
{
|
|
|
1324 |
int i;
|
|
|
1325 |
OtherElem *other;
|
|
|
1326 |
|
|
|
1327 |
/* ignore this call if there is no other element */
|
|
|
1328 |
if (other_elems == NULL)
|
|
|
1329 |
return;
|
|
|
1330 |
|
|
|
1331 |
/* save pointer to this information */
|
|
|
1332 |
plyfile->other_elems = other_elems;
|
|
|
1333 |
|
|
|
1334 |
/* describe the other properties of this element */
|
|
|
1335 |
|
|
|
1336 |
for (i = 0; i < other_elems->num_elems; i++) {
|
|
|
1337 |
other = &(other_elems->other_list[i]);
|
|
|
1338 |
ply_element_count (plyfile, other->elem_name, other->elem_count);
|
|
|
1339 |
ply_describe_other_properties (plyfile, other->other_props,
|
|
|
1340 |
offsetof(OtherData,other_props));
|
|
|
1341 |
}
|
|
|
1342 |
}
|
|
|
1343 |
|
|
|
1344 |
|
|
|
1345 |
/******************************************************************************
|
|
|
1346 |
Write out the "other" elements specified for this PLY file.
|
|
|
1347 |
|
|
|
1348 |
Entry:
|
|
|
1349 |
plyfile - pointer to PLY file to write out other elements for
|
|
|
1350 |
******************************************************************************/
|
|
|
1351 |
|
|
|
1352 |
void ply_put_other_elements (PlyFile *plyfile)
|
|
|
1353 |
{
|
|
|
1354 |
int i,j;
|
|
|
1355 |
OtherElem *other;
|
|
|
1356 |
|
|
|
1357 |
/* make sure we have other elements to write */
|
|
|
1358 |
if (plyfile->other_elems == NULL)
|
|
|
1359 |
return;
|
|
|
1360 |
|
|
|
1361 |
/* write out the data for each "other" element */
|
|
|
1362 |
|
|
|
1363 |
for (i = 0; i < plyfile->other_elems->num_elems; i++) {
|
|
|
1364 |
|
|
|
1365 |
other = &(plyfile->other_elems->other_list[i]);
|
|
|
1366 |
ply_put_element_setup (plyfile, other->elem_name);
|
|
|
1367 |
|
|
|
1368 |
/* write out each instance of the current element */
|
|
|
1369 |
for (j = 0; j < other->elem_count; j++)
|
|
|
1370 |
ply_put_element (plyfile, (void *) other->other_data[j]);
|
|
|
1371 |
}
|
|
|
1372 |
}
|
|
|
1373 |
|
|
|
1374 |
|
|
|
1375 |
/******************************************************************************
|
|
|
1376 |
Free up storage used by an "other" elements data structure.
|
|
|
1377 |
|
|
|
1378 |
Entry:
|
|
|
1379 |
other_elems - data structure to free up
|
|
|
1380 |
******************************************************************************/
|
|
|
1381 |
|
|
|
1382 |
void ply_free_other_elements (PlyOtherElems *other_elems)
|
|
|
1383 |
{
|
|
|
1384 |
|
|
|
1385 |
}
|
|
|
1386 |
|
|
|
1387 |
|
|
|
1388 |
|
|
|
1389 |
/*******************/
|
|
|
1390 |
/* Miscellaneous */
|
|
|
1391 |
/*******************/
|
|
|
1392 |
|
|
|
1393 |
|
|
|
1394 |
|
|
|
1395 |
/******************************************************************************
|
|
|
1396 |
Close a PLY file.
|
|
|
1397 |
|
|
|
1398 |
Entry:
|
|
|
1399 |
plyfile - identifier of file to close
|
|
|
1400 |
******************************************************************************/
|
|
|
1401 |
|
|
|
1402 |
void ply_close(PlyFile *plyfile)
|
|
|
1403 |
{
|
|
|
1404 |
fclose (plyfile->fp);
|
|
|
1405 |
|
|
|
1406 |
/* free up memory associated with the PLY file */
|
|
|
1407 |
free (plyfile);
|
|
|
1408 |
}
|
|
|
1409 |
|
|
|
1410 |
|
|
|
1411 |
/******************************************************************************
|
|
|
1412 |
Get version number and file type of a PlyFile.
|
|
|
1413 |
|
|
|
1414 |
Entry:
|
|
|
1415 |
ply - pointer to PLY file
|
|
|
1416 |
|
|
|
1417 |
Exit:
|
|
|
1418 |
version - version of the file
|
|
|
1419 |
file_type - PLY_ASCII, PLY_BINARY_BE, or PLY_BINARY_LE
|
|
|
1420 |
******************************************************************************/
|
|
|
1421 |
|
|
|
1422 |
void ply_get_info(PlyFile *ply, float *version, int *file_type)
|
|
|
1423 |
{
|
|
|
1424 |
if (ply == NULL)
|
|
|
1425 |
return;
|
|
|
1426 |
|
|
|
1427 |
*version = ply->version;
|
|
|
1428 |
*file_type = ply->file_type;
|
|
|
1429 |
}
|
|
|
1430 |
|
|
|
1431 |
|
|
|
1432 |
/******************************************************************************
|
|
|
1433 |
Compare two strings. Returns 1 if they are the same, 0 if not.
|
|
|
1434 |
******************************************************************************/
|
|
|
1435 |
|
|
|
1436 |
int equal_strings(char *s1, char *s2)
|
|
|
1437 |
{
|
|
|
1438 |
int i;
|
|
|
1439 |
|
|
|
1440 |
while (*s1 && *s2)
|
|
|
1441 |
if (*s1++ != *s2++)
|
|
|
1442 |
return (0);
|
|
|
1443 |
|
|
|
1444 |
if (*s1 != *s2)
|
|
|
1445 |
return (0);
|
|
|
1446 |
else
|
|
|
1447 |
return (1);
|
|
|
1448 |
}
|
|
|
1449 |
|
|
|
1450 |
|
|
|
1451 |
/******************************************************************************
|
|
|
1452 |
Find an element from the element list of a given PLY object.
|
|
|
1453 |
|
|
|
1454 |
Entry:
|
|
|
1455 |
plyfile - file id for PLY file
|
|
|
1456 |
element - name of element we're looking for
|
|
|
1457 |
|
|
|
1458 |
Exit:
|
|
|
1459 |
returns the element, or NULL if not found
|
|
|
1460 |
******************************************************************************/
|
|
|
1461 |
|
|
|
1462 |
PlyElement *find_element(PlyFile *plyfile, char *element)
|
|
|
1463 |
{
|
|
|
1464 |
int i;
|
|
|
1465 |
|
|
|
1466 |
for (i = 0; i < plyfile->nelems; i++)
|
|
|
1467 |
if (equal_strings (element, plyfile->elems[i]->name))
|
|
|
1468 |
return (plyfile->elems[i]);
|
|
|
1469 |
|
|
|
1470 |
return (NULL);
|
|
|
1471 |
}
|
|
|
1472 |
|
|
|
1473 |
|
|
|
1474 |
/******************************************************************************
|
|
|
1475 |
Find a property in the list of properties of a given element.
|
|
|
1476 |
|
|
|
1477 |
Entry:
|
|
|
1478 |
elem - pointer to element in which we want to find the property
|
|
|
1479 |
prop_name - name of property to find
|
|
|
1480 |
|
|
|
1481 |
Exit:
|
|
|
1482 |
index - index to position in list
|
|
|
1483 |
returns a pointer to the property, or NULL if not found
|
|
|
1484 |
******************************************************************************/
|
|
|
1485 |
|
|
|
1486 |
PlyProperty *find_property(PlyElement *elem, char *prop_name, int *index)
|
|
|
1487 |
{
|
|
|
1488 |
int i;
|
|
|
1489 |
|
|
|
1490 |
for (i = 0; i < elem->nprops; i++)
|
|
|
1491 |
if (equal_strings (prop_name, elem->props[i]->name)) {
|
|
|
1492 |
*index = i;
|
|
|
1493 |
return (elem->props[i]);
|
|
|
1494 |
}
|
|
|
1495 |
|
|
|
1496 |
*index = -1;
|
|
|
1497 |
return (NULL);
|
|
|
1498 |
}
|
|
|
1499 |
|
|
|
1500 |
|
|
|
1501 |
/******************************************************************************
|
|
|
1502 |
Read an element from an ascii file.
|
|
|
1503 |
|
|
|
1504 |
Entry:
|
|
|
1505 |
plyfile - file identifier
|
|
|
1506 |
elem_ptr - pointer to element
|
|
|
1507 |
******************************************************************************/
|
|
|
1508 |
|
|
|
1509 |
void ascii_get_element(PlyFile *plyfile, char *elem_ptr,
|
|
|
1510 |
int use_provided_storage)
|
|
|
1511 |
{
|
|
|
1512 |
int i,j,k;
|
|
|
1513 |
PlyElement *elem;
|
|
|
1514 |
PlyProperty *prop;
|
|
|
1515 |
char **words;
|
|
|
1516 |
int nwords;
|
|
|
1517 |
int which_word;
|
|
|
1518 |
FILE *fp = plyfile->fp;
|
|
|
1519 |
char *elem_data,*item;
|
|
|
1520 |
char *item_ptr;
|
|
|
1521 |
int item_size;
|
|
|
1522 |
int int_val;
|
|
|
1523 |
unsigned int uint_val;
|
|
|
1524 |
double double_val;
|
|
|
1525 |
int list_count;
|
|
|
1526 |
int store_it;
|
|
|
1527 |
char **store_array;
|
|
|
1528 |
char *orig_line;
|
|
|
1529 |
char *other_data;
|
|
|
1530 |
int other_flag;
|
|
|
1531 |
|
|
|
1532 |
/* the kind of element we're reading currently */
|
|
|
1533 |
elem = plyfile->which_elem;
|
|
|
1534 |
|
|
|
1535 |
/* do we need to setup for other_props? */
|
|
|
1536 |
|
|
|
1537 |
if (elem->other_offset != NO_OTHER_PROPS) {
|
|
|
1538 |
char **ptr;
|
|
|
1539 |
other_flag = 1;
|
|
|
1540 |
/* make room for other_props */
|
|
|
1541 |
other_data = (char *) myalloc (elem->other_size);
|
|
|
1542 |
/* store pointer in user's structure to the other_props */
|
|
|
1543 |
ptr = (char **) (elem_ptr + elem->other_offset);
|
|
|
1544 |
*ptr = other_data;
|
|
|
1545 |
}
|
|
|
1546 |
else
|
|
|
1547 |
other_flag = 0;
|
|
|
1548 |
|
|
|
1549 |
/* read in the element */
|
|
|
1550 |
|
|
|
1551 |
words = get_words (plyfile->fp, &nwords, &orig_line);
|
|
|
1552 |
if (words == NULL) {
|
|
|
1553 |
fprintf (stderr, "ply_get_element: unexpected end of file\n");
|
|
|
1554 |
exit (-1);
|
|
|
1555 |
}
|
|
|
1556 |
|
|
|
1557 |
which_word = 0;
|
|
|
1558 |
|
|
|
1559 |
for (j = 0; j < elem->nprops; j++) {
|
|
|
1560 |
|
|
|
1561 |
prop = elem->props[j];
|
|
|
1562 |
store_it = (elem->store_prop[j] | other_flag);
|
|
|
1563 |
|
|
|
1564 |
/* store either in the user's structure or in other_props */
|
|
|
1565 |
if (elem->store_prop[j])
|
|
|
1566 |
elem_data = elem_ptr;
|
|
|
1567 |
else
|
|
|
1568 |
elem_data = other_data;
|
|
|
1569 |
|
|
|
1570 |
if (prop->is_list) { /* a list */
|
|
|
1571 |
|
|
|
1572 |
/* get and store the number of items in the list */
|
|
|
1573 |
get_ascii_item (words[which_word++], prop->count_external,
|
|
|
1574 |
&int_val, &uint_val, &double_val);
|
|
|
1575 |
if (store_it) {
|
|
|
1576 |
item = elem_data + prop->count_offset;
|
|
|
1577 |
store_item(item, prop->count_internal, int_val, uint_val, double_val);
|
|
|
1578 |
}
|
|
|
1579 |
|
|
|
1580 |
/* allocate space for an array of items and store a ptr to the array */
|
|
|
1581 |
list_count = int_val;
|
|
|
1582 |
item_size = ply_type_size[prop->internal_type];
|
|
|
1583 |
store_array = (char **) (elem_data + prop->offset);
|
|
|
1584 |
|
|
|
1585 |
if (list_count == 0) {
|
|
|
1586 |
if (store_it && !use_provided_storage)
|
|
|
1587 |
*store_array = NULL;
|
|
|
1588 |
}
|
|
|
1589 |
else {
|
|
|
1590 |
if (store_it) {
|
|
|
1591 |
if (use_provided_storage) {
|
|
|
1592 |
item_ptr = *store_array;
|
|
|
1593 |
item = item_ptr;
|
|
|
1594 |
} else {
|
|
|
1595 |
item_ptr = (char *) myalloc
|
|
|
1596 |
(sizeof (char) * item_size * list_count);
|
|
|
1597 |
item = item_ptr;
|
|
|
1598 |
*store_array = item_ptr;
|
|
|
1599 |
}
|
|
|
1600 |
}
|
|
|
1601 |
|
|
|
1602 |
/* read items and store them into the array */
|
|
|
1603 |
for (k = 0; k < list_count; k++) {
|
|
|
1604 |
get_ascii_item (words[which_word++], prop->external_type,
|
|
|
1605 |
&int_val, &uint_val, &double_val);
|
|
|
1606 |
if (store_it) {
|
|
|
1607 |
store_item (item, prop->internal_type,
|
|
|
1608 |
int_val, uint_val, double_val);
|
|
|
1609 |
item += item_size;
|
|
|
1610 |
}
|
|
|
1611 |
}
|
|
|
1612 |
}
|
|
|
1613 |
|
|
|
1614 |
}
|
|
|
1615 |
else { /* not a list */
|
|
|
1616 |
get_ascii_item (words[which_word++], prop->external_type,
|
|
|
1617 |
&int_val, &uint_val, &double_val);
|
|
|
1618 |
if (store_it) {
|
|
|
1619 |
item = elem_data + prop->offset;
|
|
|
1620 |
store_item (item, prop->internal_type, int_val, uint_val, double_val);
|
|
|
1621 |
}
|
|
|
1622 |
}
|
|
|
1623 |
|
|
|
1624 |
}
|
|
|
1625 |
|
|
|
1626 |
free (words);
|
|
|
1627 |
}
|
|
|
1628 |
|
|
|
1629 |
|
|
|
1630 |
/******************************************************************************
|
|
|
1631 |
Read an element from a binary file.
|
|
|
1632 |
|
|
|
1633 |
Entry:
|
|
|
1634 |
plyfile - file identifier
|
|
|
1635 |
elem_ptr - pointer to an element
|
|
|
1636 |
******************************************************************************/
|
|
|
1637 |
|
|
|
1638 |
void binary_get_element(PlyFile *plyfile, char *elem_ptr,
|
|
|
1639 |
int use_provided_storage)
|
|
|
1640 |
{
|
|
|
1641 |
int i,j,k;
|
|
|
1642 |
PlyElement *elem;
|
|
|
1643 |
PlyProperty *prop;
|
|
|
1644 |
FILE *fp = plyfile->fp;
|
|
|
1645 |
char *elem_data,*item;
|
|
|
1646 |
char *item_ptr;
|
|
|
1647 |
int item_size;
|
|
|
1648 |
int int_val;
|
|
|
1649 |
unsigned int uint_val;
|
|
|
1650 |
double double_val;
|
|
|
1651 |
int list_count;
|
|
|
1652 |
int store_it;
|
|
|
1653 |
char **store_array;
|
|
|
1654 |
char *other_data;
|
|
|
1655 |
int other_flag;
|
|
|
1656 |
|
|
|
1657 |
/* the kind of element we're reading currently */
|
|
|
1658 |
elem = plyfile->which_elem;
|
|
|
1659 |
|
|
|
1660 |
/* do we need to setup for other_props? */
|
|
|
1661 |
|
|
|
1662 |
if (elem->other_offset != NO_OTHER_PROPS) {
|
|
|
1663 |
char **ptr;
|
|
|
1664 |
other_flag = 1;
|
|
|
1665 |
/* make room for other_props */
|
|
|
1666 |
other_data = (char *) myalloc (elem->other_size);
|
|
|
1667 |
/* store pointer in user's structure to the other_props */
|
|
|
1668 |
ptr = (char **) (elem_ptr + elem->other_offset);
|
|
|
1669 |
*ptr = other_data;
|
|
|
1670 |
}
|
|
|
1671 |
else
|
|
|
1672 |
other_flag = 0;
|
|
|
1673 |
|
|
|
1674 |
/* read in a number of elements */
|
|
|
1675 |
|
|
|
1676 |
for (j = 0; j < elem->nprops; j++) {
|
|
|
1677 |
|
|
|
1678 |
prop = elem->props[j];
|
|
|
1679 |
store_it = (elem->store_prop[j] | other_flag);
|
|
|
1680 |
|
|
|
1681 |
/* store either in the user's structure or in other_props */
|
|
|
1682 |
if (elem->store_prop[j])
|
|
|
1683 |
elem_data = elem_ptr;
|
|
|
1684 |
else
|
|
|
1685 |
elem_data = other_data;
|
|
|
1686 |
|
|
|
1687 |
if (prop->is_list) { /* a list */
|
|
|
1688 |
|
|
|
1689 |
/* get and store the number of items in the list */
|
|
|
1690 |
get_binary_item (fp, prop->count_external,
|
|
|
1691 |
&int_val, &uint_val, &double_val, plyfile->file_type);
|
|
|
1692 |
if (store_it) {
|
|
|
1693 |
item = elem_data + prop->count_offset;
|
|
|
1694 |
store_item(item, prop->count_internal, int_val, uint_val, double_val);
|
|
|
1695 |
}
|
|
|
1696 |
|
|
|
1697 |
/* allocate space for an array of items and store a ptr to the array */
|
|
|
1698 |
list_count = int_val;
|
|
|
1699 |
/* The "if" was added by Afra Zomorodian 8/22/95
|
|
|
1700 |
* so that zipper won't crash reading plies that have additional
|
|
|
1701 |
* properties.
|
|
|
1702 |
*/
|
|
|
1703 |
if (store_it) {
|
|
|
1704 |
item_size = ply_type_size[prop->internal_type];
|
|
|
1705 |
}
|
|
|
1706 |
store_array = (char **) (elem_data + prop->offset);
|
|
|
1707 |
if (list_count == 0) {
|
|
|
1708 |
if (store_it && !use_provided_storage)
|
|
|
1709 |
*store_array = NULL;
|
|
|
1710 |
}
|
|
|
1711 |
else {
|
|
|
1712 |
if (store_it) {
|
|
|
1713 |
if (use_provided_storage) {
|
|
|
1714 |
item_ptr = *store_array;
|
|
|
1715 |
item = item_ptr;
|
|
|
1716 |
} else {
|
|
|
1717 |
item_ptr = (char *) myalloc
|
|
|
1718 |
(sizeof (char) * item_size * list_count);
|
|
|
1719 |
item = item_ptr;
|
|
|
1720 |
*store_array = item_ptr;
|
|
|
1721 |
}
|
|
|
1722 |
}
|
|
|
1723 |
|
|
|
1724 |
/* read items and store them into the array */
|
|
|
1725 |
for (k = 0; k < list_count; k++) {
|
|
|
1726 |
get_binary_item (fp, prop->external_type,
|
|
|
1727 |
&int_val, &uint_val, &double_val,
|
|
|
1728 |
plyfile->file_type);
|
|
|
1729 |
if (store_it) {
|
|
|
1730 |
store_item (item, prop->internal_type,
|
|
|
1731 |
int_val, uint_val, double_val);
|
|
|
1732 |
item += item_size;
|
|
|
1733 |
}
|
|
|
1734 |
}
|
|
|
1735 |
}
|
|
|
1736 |
|
|
|
1737 |
}
|
|
|
1738 |
else { /* not a list */
|
|
|
1739 |
get_binary_item (fp, prop->external_type,
|
|
|
1740 |
&int_val, &uint_val, &double_val, plyfile->file_type);
|
|
|
1741 |
if (store_it) {
|
|
|
1742 |
item = elem_data + prop->offset;
|
|
|
1743 |
store_item (item, prop->internal_type, int_val, uint_val, double_val);
|
|
|
1744 |
}
|
|
|
1745 |
}
|
|
|
1746 |
|
|
|
1747 |
}
|
|
|
1748 |
}
|
|
|
1749 |
|
|
|
1750 |
|
|
|
1751 |
/******************************************************************************
|
|
|
1752 |
Write to a file the word that represents a PLY data type.
|
|
|
1753 |
|
|
|
1754 |
Entry:
|
|
|
1755 |
fp - file pointer
|
|
|
1756 |
code - code for type
|
|
|
1757 |
******************************************************************************/
|
|
|
1758 |
|
|
|
1759 |
void write_scalar_type (FILE *fp, int code)
|
|
|
1760 |
{
|
|
|
1761 |
/* make sure this is a valid code */
|
|
|
1762 |
|
|
|
1763 |
if (code <= PLY_START_TYPE || code >= PLY_END_TYPE) {
|
|
|
1764 |
fprintf (stderr, "write_scalar_type: bad data code = %d\n", code);
|
|
|
1765 |
exit (-1);
|
|
|
1766 |
}
|
|
|
1767 |
|
|
|
1768 |
/* write the code to a file */
|
|
|
1769 |
|
|
|
1770 |
fprintf (fp, "%s", type_names[code]);
|
|
|
1771 |
}
|
|
|
1772 |
|
|
|
1773 |
|
|
|
1774 |
/******************************************************************************
|
|
|
1775 |
Get a text line from a file and break it up into words.
|
|
|
1776 |
|
|
|
1777 |
IMPORTANT: The calling routine call "free" on the returned pointer once
|
|
|
1778 |
finished with it.
|
|
|
1779 |
|
|
|
1780 |
Entry:
|
|
|
1781 |
fp - file to read from
|
|
|
1782 |
|
|
|
1783 |
Exit:
|
|
|
1784 |
nwords - number of words returned
|
|
|
1785 |
orig_line - the original line of characters
|
|
|
1786 |
returns a list of words from the line, or NULL if end-of-file
|
|
|
1787 |
******************************************************************************/
|
|
|
1788 |
|
|
|
1789 |
char **get_words(FILE *fp, int *nwords, char **orig_line)
|
|
|
1790 |
{
|
|
|
1791 |
#define BIG_STRING 4096
|
|
|
1792 |
int i,j;
|
|
|
1793 |
static char str[BIG_STRING];
|
|
|
1794 |
static char str_copy[BIG_STRING];
|
|
|
1795 |
char **words;
|
|
|
1796 |
int max_words = 10;
|
|
|
1797 |
int num_words = 0;
|
|
|
1798 |
char *ptr,*ptr2;
|
|
|
1799 |
char *result;
|
|
|
1800 |
|
|
|
1801 |
words = (char **) myalloc (sizeof (char *) * max_words);
|
|
|
1802 |
|
|
|
1803 |
/* read in a line */
|
|
|
1804 |
result = fgets (str, BIG_STRING, fp);
|
|
|
1805 |
if (result == NULL) {
|
|
|
1806 |
*nwords = 0;
|
|
|
1807 |
*orig_line = NULL;
|
|
|
1808 |
return (NULL);
|
|
|
1809 |
}
|
|
|
1810 |
|
|
|
1811 |
/* convert line-feed and tabs into spaces */
|
|
|
1812 |
/* (this guarentees that there will be a space before the */
|
|
|
1813 |
/* null character at the end of the string) */
|
|
|
1814 |
|
|
|
1815 |
str[BIG_STRING-2] = ' ';
|
|
|
1816 |
str[BIG_STRING-1] = '\0';
|
|
|
1817 |
|
|
|
1818 |
for (ptr = str, ptr2 = str_copy; *ptr != '\0'; ptr++, ptr2++) {
|
|
|
1819 |
*ptr2 = *ptr;
|
|
|
1820 |
if (*ptr == '\t') {
|
|
|
1821 |
*ptr = ' ';
|
|
|
1822 |
*ptr2 = ' ';
|
|
|
1823 |
}
|
|
|
1824 |
else if (*ptr == '\n') {
|
|
|
1825 |
*ptr = ' ';
|
|
|
1826 |
*ptr2 = '\0';
|
|
|
1827 |
break;
|
|
|
1828 |
}
|
|
|
1829 |
}
|
|
|
1830 |
|
|
|
1831 |
/* find the words in the line */
|
|
|
1832 |
|
|
|
1833 |
ptr = str;
|
|
|
1834 |
while (*ptr != '\0') {
|
|
|
1835 |
|
|
|
1836 |
/* jump over leading spaces */
|
|
|
1837 |
while (*ptr == ' ')
|
|
|
1838 |
ptr++;
|
|
|
1839 |
|
|
|
1840 |
/* break if we reach the end */
|
|
|
1841 |
if (*ptr == '\0')
|
|
|
1842 |
break;
|
|
|
1843 |
|
|
|
1844 |
/* save pointer to beginning of word */
|
|
|
1845 |
if (num_words >= max_words) {
|
|
|
1846 |
max_words += 10;
|
|
|
1847 |
words = (char **) realloc (words, sizeof (char *) * max_words);
|
|
|
1848 |
}
|
|
|
1849 |
words[num_words++] = ptr;
|
|
|
1850 |
|
|
|
1851 |
/* jump over non-spaces */
|
|
|
1852 |
while (*ptr != ' ')
|
|
|
1853 |
ptr++;
|
|
|
1854 |
|
|
|
1855 |
/* place a null character here to mark the end of the word */
|
|
|
1856 |
*ptr++ = '\0';
|
|
|
1857 |
}
|
|
|
1858 |
|
|
|
1859 |
/* return the list of words */
|
|
|
1860 |
*nwords = num_words;
|
|
|
1861 |
*orig_line = str_copy;
|
|
|
1862 |
return (words);
|
|
|
1863 |
}
|
|
|
1864 |
|
|
|
1865 |
|
|
|
1866 |
/******************************************************************************
|
|
|
1867 |
Return the value of an item, given a pointer to it and its type.
|
|
|
1868 |
|
|
|
1869 |
Entry:
|
|
|
1870 |
item - pointer to item
|
|
|
1871 |
type - data type that "item" points to
|
|
|
1872 |
|
|
|
1873 |
Exit:
|
|
|
1874 |
returns a double-precision float that contains the value of the item
|
|
|
1875 |
******************************************************************************/
|
|
|
1876 |
|
|
|
1877 |
double get_item_value(char *item, int type)
|
|
|
1878 |
{
|
|
|
1879 |
unsigned char *puchar;
|
|
|
1880 |
char *pchar;
|
|
|
1881 |
short int *pshort;
|
|
|
1882 |
unsigned short int *pushort;
|
|
|
1883 |
int *pint;
|
|
|
1884 |
unsigned int *puint;
|
|
|
1885 |
float *pfloat;
|
|
|
1886 |
double *pdouble;
|
|
|
1887 |
int int_value;
|
|
|
1888 |
unsigned int uint_value;
|
|
|
1889 |
double double_value;
|
|
|
1890 |
|
|
|
1891 |
switch (type) {
|
|
|
1892 |
case PLY_CHAR:
|
|
|
1893 |
pchar = (char *) item;
|
|
|
1894 |
int_value = *pchar;
|
|
|
1895 |
return ((double) int_value);
|
|
|
1896 |
case PLY_UCHAR:
|
|
|
1897 |
puchar = (unsigned char *) item;
|
|
|
1898 |
int_value = *puchar;
|
|
|
1899 |
return ((double) int_value);
|
|
|
1900 |
case PLY_SHORT:
|
|
|
1901 |
pshort = (short int *) item;
|
|
|
1902 |
int_value = *pshort;
|
|
|
1903 |
return ((double) int_value);
|
|
|
1904 |
case PLY_USHORT:
|
|
|
1905 |
pushort = (unsigned short int *) item;
|
|
|
1906 |
int_value = *pushort;
|
|
|
1907 |
return ((double) int_value);
|
|
|
1908 |
case PLY_INT:
|
|
|
1909 |
pint = (int *) item;
|
|
|
1910 |
int_value = *pint;
|
|
|
1911 |
return ((double) int_value);
|
|
|
1912 |
case PLY_UINT:
|
|
|
1913 |
puint = (unsigned int *) item;
|
|
|
1914 |
uint_value = *puint;
|
|
|
1915 |
return ((double) uint_value);
|
|
|
1916 |
case PLY_FLOAT:
|
|
|
1917 |
pfloat = (float *) item;
|
|
|
1918 |
double_value = *pfloat;
|
|
|
1919 |
return (double_value);
|
|
|
1920 |
case PLY_DOUBLE:
|
|
|
1921 |
pdouble = (double *) item;
|
|
|
1922 |
double_value = *pdouble;
|
|
|
1923 |
return (double_value);
|
|
|
1924 |
default:
|
|
|
1925 |
fprintf (stderr, "get_item_value: bad type = %d\n", type);
|
|
|
1926 |
exit (-1);
|
|
|
1927 |
}
|
|
|
1928 |
|
|
|
1929 |
/* It never gets here, but avoid compiler warning... */
|
|
|
1930 |
return(-1);
|
|
|
1931 |
}
|
|
|
1932 |
|
|
|
1933 |
|
|
|
1934 |
/******************************************************************************
|
|
|
1935 |
Write out an item to a file as raw binary bytes.
|
|
|
1936 |
|
|
|
1937 |
Entry:
|
|
|
1938 |
fp - file to write to
|
|
|
1939 |
int_val - integer version of item
|
|
|
1940 |
uint_val - unsigned integer version of item
|
|
|
1941 |
double_val - double-precision float version of item
|
|
|
1942 |
type - data type to write out
|
|
|
1943 |
******************************************************************************/
|
|
|
1944 |
|
|
|
1945 |
void write_binary_item(
|
|
|
1946 |
FILE *fp,
|
|
|
1947 |
int int_val,
|
|
|
1948 |
unsigned int uint_val,
|
|
|
1949 |
double double_val,
|
|
|
1950 |
int type,
|
|
|
1951 |
int file_type
|
|
|
1952 |
)
|
|
|
1953 |
{
|
|
|
1954 |
unsigned char uchar_val;
|
|
|
1955 |
char char_val;
|
|
|
1956 |
unsigned short ushort_val;
|
|
|
1957 |
short short_val;
|
|
|
1958 |
float float_val;
|
|
|
1959 |
|
|
|
1960 |
|
|
|
1961 |
switch (type) {
|
|
|
1962 |
case PLY_CHAR:
|
|
|
1963 |
char_val = int_val;
|
|
|
1964 |
fwrite (&char_val, 1, 1, fp);
|
|
|
1965 |
break;
|
|
|
1966 |
case PLY_SHORT:
|
|
|
1967 |
short_val = int_val;
|
|
|
1968 |
SWAP_TO_ENDIAN2(&short_val, file_type);
|
|
|
1969 |
fwrite (&short_val, 2, 1, fp);
|
|
|
1970 |
break;
|
|
|
1971 |
case PLY_INT:
|
|
|
1972 |
SWAP_TO_ENDIAN4(&int_val, file_type);
|
|
|
1973 |
fwrite (&int_val, 4, 1, fp);
|
|
|
1974 |
break;
|
|
|
1975 |
case PLY_UCHAR:
|
|
|
1976 |
uchar_val = uint_val;
|
|
|
1977 |
fwrite (&uchar_val, 1, 1, fp);
|
|
|
1978 |
break;
|
|
|
1979 |
case PLY_USHORT:
|
|
|
1980 |
ushort_val = uint_val;
|
|
|
1981 |
SWAP_TO_ENDIAN2(&ushort_val, file_type);
|
|
|
1982 |
fwrite (&ushort_val, 2, 1, fp);
|
|
|
1983 |
break;
|
|
|
1984 |
case PLY_UINT:
|
|
|
1985 |
SWAP_TO_ENDIAN4(&uint_val, file_type);
|
|
|
1986 |
fwrite (&uint_val, 4, 1, fp);
|
|
|
1987 |
break;
|
|
|
1988 |
case PLY_FLOAT:
|
|
|
1989 |
float_val = double_val;
|
|
|
1990 |
SWAP_TO_ENDIAN4(&float_val, file_type);
|
|
|
1991 |
fwrite (&float_val, 4, 1, fp);
|
|
|
1992 |
break;
|
|
|
1993 |
case PLY_DOUBLE:
|
|
|
1994 |
SWAP_TO_ENDIAN8(&double_val, file_type);
|
|
|
1995 |
fwrite (&double_val, 8, 1, fp);
|
|
|
1996 |
break;
|
|
|
1997 |
default:
|
|
|
1998 |
fprintf (stderr, "write_binary_item: bad type = %d\n", type);
|
|
|
1999 |
exit (-1);
|
|
|
2000 |
}
|
|
|
2001 |
}
|
|
|
2002 |
|
|
|
2003 |
|
|
|
2004 |
/******************************************************************************
|
|
|
2005 |
Write out an item to a file as ascii characters.
|
|
|
2006 |
|
|
|
2007 |
Entry:
|
|
|
2008 |
fp - file to write to
|
|
|
2009 |
int_val - integer version of item
|
|
|
2010 |
uint_val - unsigned integer version of item
|
|
|
2011 |
double_val - double-precision float version of item
|
|
|
2012 |
type - data type to write out
|
|
|
2013 |
******************************************************************************/
|
|
|
2014 |
|
|
|
2015 |
void write_ascii_item(
|
|
|
2016 |
FILE *fp,
|
|
|
2017 |
int int_val,
|
|
|
2018 |
unsigned int uint_val,
|
|
|
2019 |
double double_val,
|
|
|
2020 |
int type
|
|
|
2021 |
)
|
|
|
2022 |
{
|
|
|
2023 |
switch (type) {
|
|
|
2024 |
case PLY_CHAR:
|
|
|
2025 |
case PLY_SHORT:
|
|
|
2026 |
case PLY_INT:
|
|
|
2027 |
fprintf (fp, "%d ", int_val);
|
|
|
2028 |
break;
|
|
|
2029 |
case PLY_UCHAR:
|
|
|
2030 |
case PLY_USHORT:
|
|
|
2031 |
case PLY_UINT:
|
|
|
2032 |
fprintf (fp, "%u ", uint_val);
|
|
|
2033 |
break;
|
|
|
2034 |
case PLY_FLOAT:
|
|
|
2035 |
case PLY_DOUBLE:
|
|
|
2036 |
fprintf (fp, "%g ", double_val);
|
|
|
2037 |
break;
|
|
|
2038 |
default:
|
|
|
2039 |
fprintf (stderr, "write_ascii_item: bad type = %d\n", type);
|
|
|
2040 |
exit (-1);
|
|
|
2041 |
}
|
|
|
2042 |
}
|
|
|
2043 |
|
|
|
2044 |
|
|
|
2045 |
/******************************************************************************
|
|
|
2046 |
Write out an item to a file as ascii characters.
|
|
|
2047 |
|
|
|
2048 |
Entry:
|
|
|
2049 |
fp - file to write to
|
|
|
2050 |
item - pointer to item to write
|
|
|
2051 |
type - data type that "item" points to
|
|
|
2052 |
|
|
|
2053 |
Exit:
|
|
|
2054 |
returns a double-precision float that contains the value of the written item
|
|
|
2055 |
******************************************************************************/
|
|
|
2056 |
|
|
|
2057 |
double old_write_ascii_item(FILE *fp, char *item, int type)
|
|
|
2058 |
{
|
|
|
2059 |
unsigned char *puchar;
|
|
|
2060 |
char *pchar;
|
|
|
2061 |
short int *pshort;
|
|
|
2062 |
unsigned short int *pushort;
|
|
|
2063 |
int *pint;
|
|
|
2064 |
unsigned int *puint;
|
|
|
2065 |
float *pfloat;
|
|
|
2066 |
double *pdouble;
|
|
|
2067 |
int int_value;
|
|
|
2068 |
unsigned int uint_value;
|
|
|
2069 |
double double_value;
|
|
|
2070 |
|
|
|
2071 |
switch (type) {
|
|
|
2072 |
case PLY_CHAR:
|
|
|
2073 |
pchar = (char *) item;
|
|
|
2074 |
int_value = *pchar;
|
|
|
2075 |
fprintf (fp, "%d ", int_value);
|
|
|
2076 |
return ((double) int_value);
|
|
|
2077 |
case PLY_UCHAR:
|
|
|
2078 |
puchar = (unsigned char *) item;
|
|
|
2079 |
int_value = *puchar;
|
|
|
2080 |
fprintf (fp, "%d ", int_value);
|
|
|
2081 |
return ((double) int_value);
|
|
|
2082 |
case PLY_SHORT:
|
|
|
2083 |
pshort = (short int *) item;
|
|
|
2084 |
int_value = *pshort;
|
|
|
2085 |
fprintf (fp, "%d ", int_value);
|
|
|
2086 |
return ((double) int_value);
|
|
|
2087 |
case PLY_USHORT:
|
|
|
2088 |
pushort = (unsigned short int *) item;
|
|
|
2089 |
int_value = *pushort;
|
|
|
2090 |
fprintf (fp, "%d ", int_value);
|
|
|
2091 |
return ((double) int_value);
|
|
|
2092 |
case PLY_INT:
|
|
|
2093 |
pint = (int *) item;
|
|
|
2094 |
int_value = *pint;
|
|
|
2095 |
fprintf (fp, "%d ", int_value);
|
|
|
2096 |
return ((double) int_value);
|
|
|
2097 |
case PLY_UINT:
|
|
|
2098 |
puint = (unsigned int *) item;
|
|
|
2099 |
uint_value = *puint;
|
|
|
2100 |
fprintf (fp, "%u ", uint_value);
|
|
|
2101 |
return ((double) uint_value);
|
|
|
2102 |
case PLY_FLOAT:
|
|
|
2103 |
pfloat = (float *) item;
|
|
|
2104 |
double_value = *pfloat;
|
|
|
2105 |
fprintf (fp, "%g ", double_value);
|
|
|
2106 |
return (double_value);
|
|
|
2107 |
case PLY_DOUBLE:
|
|
|
2108 |
pdouble = (double *) item;
|
|
|
2109 |
double_value = *pdouble;
|
|
|
2110 |
fprintf (fp, "%g ", double_value);
|
|
|
2111 |
return (double_value);
|
|
|
2112 |
default:
|
|
|
2113 |
fprintf (stderr, "old_write_ascii_item: bad type = %d\n", type);
|
|
|
2114 |
exit (-1);
|
|
|
2115 |
}
|
|
|
2116 |
|
|
|
2117 |
/* It never gets here, but avoid compiler warning... */
|
|
|
2118 |
return(-1);
|
|
|
2119 |
}
|
|
|
2120 |
|
|
|
2121 |
|
|
|
2122 |
/******************************************************************************
|
|
|
2123 |
Get the value of an item that is in memory, and place the result
|
|
|
2124 |
into an integer, an unsigned integer and a double.
|
|
|
2125 |
|
|
|
2126 |
Entry:
|
|
|
2127 |
ptr - pointer to the item
|
|
|
2128 |
type - data type supposedly in the item
|
|
|
2129 |
|
|
|
2130 |
Exit:
|
|
|
2131 |
int_val - integer value
|
|
|
2132 |
uint_val - unsigned integer value
|
|
|
2133 |
double_val - double-precision floating point value
|
|
|
2134 |
******************************************************************************/
|
|
|
2135 |
|
|
|
2136 |
void get_stored_item(
|
|
|
2137 |
void *ptr,
|
|
|
2138 |
int type,
|
|
|
2139 |
int *int_val,
|
|
|
2140 |
unsigned int *uint_val,
|
|
|
2141 |
double *double_val
|
|
|
2142 |
)
|
|
|
2143 |
{
|
|
|
2144 |
switch (type) {
|
|
|
2145 |
case PLY_CHAR:
|
|
|
2146 |
*int_val = *((char *) ptr);
|
|
|
2147 |
*uint_val = *int_val;
|
|
|
2148 |
*double_val = *int_val;
|
|
|
2149 |
break;
|
|
|
2150 |
case PLY_UCHAR:
|
|
|
2151 |
*uint_val = *((unsigned char *) ptr);
|
|
|
2152 |
*int_val = *uint_val;
|
|
|
2153 |
*double_val = *uint_val;
|
|
|
2154 |
break;
|
|
|
2155 |
case PLY_SHORT:
|
|
|
2156 |
*int_val = *((short int *) ptr);
|
|
|
2157 |
*uint_val = *int_val;
|
|
|
2158 |
*double_val = *int_val;
|
|
|
2159 |
break;
|
|
|
2160 |
case PLY_USHORT:
|
|
|
2161 |
*uint_val = *((unsigned short int *) ptr);
|
|
|
2162 |
*int_val = *uint_val;
|
|
|
2163 |
*double_val = *uint_val;
|
|
|
2164 |
break;
|
|
|
2165 |
case PLY_INT:
|
|
|
2166 |
*int_val = *((int *) ptr);
|
|
|
2167 |
*uint_val = *int_val;
|
|
|
2168 |
*double_val = *int_val;
|
|
|
2169 |
break;
|
|
|
2170 |
case PLY_UINT:
|
|
|
2171 |
*uint_val = *((unsigned int *) ptr);
|
|
|
2172 |
*int_val = *uint_val;
|
|
|
2173 |
*double_val = *uint_val;
|
|
|
2174 |
break;
|
|
|
2175 |
case PLY_FLOAT:
|
|
|
2176 |
*double_val = *((float *) ptr);
|
|
|
2177 |
*int_val = *double_val;
|
|
|
2178 |
*uint_val = *double_val;
|
|
|
2179 |
break;
|
|
|
2180 |
case PLY_DOUBLE:
|
|
|
2181 |
*double_val = *((double *) ptr);
|
|
|
2182 |
*int_val = *double_val;
|
|
|
2183 |
*uint_val = *double_val;
|
|
|
2184 |
break;
|
|
|
2185 |
default:
|
|
|
2186 |
fprintf (stderr, "get_stored_item: bad type = %d\n", type);
|
|
|
2187 |
exit (-1);
|
|
|
2188 |
}
|
|
|
2189 |
}
|
|
|
2190 |
|
|
|
2191 |
|
|
|
2192 |
/******************************************************************************
|
|
|
2193 |
Get the value of an item from a binary file, and place the result
|
|
|
2194 |
into an integer, an unsigned integer and a double.
|
|
|
2195 |
|
|
|
2196 |
Entry:
|
|
|
2197 |
fp - file to get item from
|
|
|
2198 |
type - data type supposedly in the word
|
|
|
2199 |
|
|
|
2200 |
Exit:
|
|
|
2201 |
int_val - integer value
|
|
|
2202 |
uint_val - unsigned integer value
|
|
|
2203 |
double_val - double-precision floating point value
|
|
|
2204 |
******************************************************************************/
|
|
|
2205 |
|
|
|
2206 |
void get_binary_item(
|
|
|
2207 |
FILE *fp,
|
|
|
2208 |
int type,
|
|
|
2209 |
int *int_val,
|
|
|
2210 |
unsigned int *uint_val,
|
|
|
2211 |
double *double_val,
|
|
|
2212 |
int file_type
|
|
|
2213 |
)
|
|
|
2214 |
{
|
|
|
2215 |
char c[8];
|
|
|
2216 |
void *ptr;
|
|
|
2217 |
|
|
|
2218 |
ptr = (void *) c;
|
|
|
2219 |
|
|
|
2220 |
switch (type) {
|
|
|
2221 |
case PLY_CHAR:
|
|
|
2222 |
fread (ptr, 1, 1, fp);
|
|
|
2223 |
*int_val = *((char *) ptr);
|
|
|
2224 |
*uint_val = *int_val;
|
|
|
2225 |
*double_val = *int_val;
|
|
|
2226 |
break;
|
|
|
2227 |
case PLY_UCHAR:
|
|
|
2228 |
fread (ptr, 1, 1, fp);
|
|
|
2229 |
*uint_val = *((unsigned char *) ptr);
|
|
|
2230 |
*int_val = *uint_val;
|
|
|
2231 |
*double_val = *uint_val;
|
|
|
2232 |
break;
|
|
|
2233 |
case PLY_SHORT:
|
|
|
2234 |
fread (ptr, 2, 1, fp);
|
|
|
2235 |
SWAP_TO_ENDIAN2(ptr, file_type);
|
|
|
2236 |
*int_val = *((short int *) ptr);
|
|
|
2237 |
*uint_val = *int_val;
|
|
|
2238 |
*double_val = *int_val;
|
|
|
2239 |
break;
|
|
|
2240 |
case PLY_USHORT:
|
|
|
2241 |
fread (ptr, 2, 1, fp);
|
|
|
2242 |
SWAP_TO_ENDIAN2(ptr, file_type);
|
|
|
2243 |
*uint_val = *((unsigned short int *) ptr);
|
|
|
2244 |
*int_val = *uint_val;
|
|
|
2245 |
*double_val = *uint_val;
|
|
|
2246 |
break;
|
|
|
2247 |
case PLY_INT:
|
|
|
2248 |
fread (ptr, 4, 1, fp);
|
|
|
2249 |
SWAP_TO_ENDIAN4(ptr, file_type);
|
|
|
2250 |
*int_val = *((int *) ptr);
|
|
|
2251 |
*uint_val = *int_val;
|
|
|
2252 |
*double_val = *int_val;
|
|
|
2253 |
break;
|
|
|
2254 |
case PLY_UINT:
|
|
|
2255 |
fread (ptr, 4, 1, fp);
|
|
|
2256 |
SWAP_TO_ENDIAN4(ptr, file_type);
|
|
|
2257 |
*uint_val = *((unsigned int *) ptr);
|
|
|
2258 |
*int_val = *uint_val;
|
|
|
2259 |
*double_val = *uint_val;
|
|
|
2260 |
break;
|
|
|
2261 |
case PLY_FLOAT:
|
|
|
2262 |
fread (ptr, 4, 1, fp);
|
|
|
2263 |
SWAP_TO_ENDIAN4(ptr, file_type);
|
|
|
2264 |
*double_val = *((float *) ptr);
|
|
|
2265 |
*int_val = *double_val;
|
|
|
2266 |
*uint_val = *double_val;
|
|
|
2267 |
break;
|
|
|
2268 |
case PLY_DOUBLE:
|
|
|
2269 |
fread (ptr, 8, 1, fp);
|
|
|
2270 |
SWAP_TO_ENDIAN8(ptr, file_type);
|
|
|
2271 |
*double_val = *((double *) ptr);
|
|
|
2272 |
*int_val = *double_val;
|
|
|
2273 |
*uint_val = *double_val;
|
|
|
2274 |
break;
|
|
|
2275 |
default:
|
|
|
2276 |
fprintf (stderr, "get_binary_item: bad type = %d\n", type);
|
|
|
2277 |
exit (-1);
|
|
|
2278 |
}
|
|
|
2279 |
}
|
|
|
2280 |
|
|
|
2281 |
|
|
|
2282 |
/******************************************************************************
|
|
|
2283 |
Extract the value of an item from an ascii word, and place the result
|
|
|
2284 |
into an integer, an unsigned integer and a double.
|
|
|
2285 |
|
|
|
2286 |
Entry:
|
|
|
2287 |
word - word to extract value from
|
|
|
2288 |
type - data type supposedly in the word
|
|
|
2289 |
|
|
|
2290 |
Exit:
|
|
|
2291 |
int_val - integer value
|
|
|
2292 |
uint_val - unsigned integer value
|
|
|
2293 |
double_val - double-precision floating point value
|
|
|
2294 |
******************************************************************************/
|
|
|
2295 |
|
|
|
2296 |
void get_ascii_item(
|
|
|
2297 |
char *word,
|
|
|
2298 |
int type,
|
|
|
2299 |
int *int_val,
|
|
|
2300 |
unsigned int *uint_val,
|
|
|
2301 |
double *double_val
|
|
|
2302 |
)
|
|
|
2303 |
{
|
|
|
2304 |
switch (type) {
|
|
|
2305 |
case PLY_CHAR:
|
|
|
2306 |
case PLY_UCHAR:
|
|
|
2307 |
case PLY_SHORT:
|
|
|
2308 |
case PLY_USHORT:
|
|
|
2309 |
case PLY_INT:
|
|
|
2310 |
*int_val = atoi (word);
|
|
|
2311 |
*uint_val = *int_val;
|
|
|
2312 |
*double_val = *int_val;
|
|
|
2313 |
break;
|
|
|
2314 |
|
|
|
2315 |
case PLY_UINT:
|
|
|
2316 |
*uint_val = strtoul (word, (char **) NULL, 10);
|
|
|
2317 |
*int_val = *uint_val;
|
|
|
2318 |
*double_val = *uint_val;
|
|
|
2319 |
break;
|
|
|
2320 |
|
|
|
2321 |
case PLY_FLOAT:
|
|
|
2322 |
case PLY_DOUBLE:
|
|
|
2323 |
*double_val = atof (word);
|
|
|
2324 |
*int_val = (int) *double_val;
|
|
|
2325 |
*uint_val = (unsigned int) *double_val;
|
|
|
2326 |
break;
|
|
|
2327 |
|
|
|
2328 |
default:
|
|
|
2329 |
fprintf (stderr, "get_ascii_item: bad type = %d\n", type);
|
|
|
2330 |
exit (-1);
|
|
|
2331 |
}
|
|
|
2332 |
}
|
|
|
2333 |
|
|
|
2334 |
|
|
|
2335 |
/******************************************************************************
|
|
|
2336 |
Store a value into a place being pointed to, guided by a data type.
|
|
|
2337 |
|
|
|
2338 |
Entry:
|
|
|
2339 |
item - place to store value
|
|
|
2340 |
type - data type
|
|
|
2341 |
int_val - integer version of value
|
|
|
2342 |
uint_val - unsigned integer version of value
|
|
|
2343 |
double_val - double version of value
|
|
|
2344 |
|
|
|
2345 |
Exit:
|
|
|
2346 |
item - pointer to stored value
|
|
|
2347 |
******************************************************************************/
|
|
|
2348 |
|
|
|
2349 |
void store_item (
|
|
|
2350 |
char *item,
|
|
|
2351 |
int type,
|
|
|
2352 |
int int_val,
|
|
|
2353 |
unsigned int uint_val,
|
|
|
2354 |
double double_val
|
|
|
2355 |
)
|
|
|
2356 |
{
|
|
|
2357 |
unsigned char *puchar;
|
|
|
2358 |
short int *pshort;
|
|
|
2359 |
unsigned short int *pushort;
|
|
|
2360 |
int *pint;
|
|
|
2361 |
unsigned int *puint;
|
|
|
2362 |
float *pfloat;
|
|
|
2363 |
double *pdouble;
|
|
|
2364 |
|
|
|
2365 |
switch (type) {
|
|
|
2366 |
case PLY_CHAR:
|
|
|
2367 |
*item = int_val;
|
|
|
2368 |
break;
|
|
|
2369 |
case PLY_UCHAR:
|
|
|
2370 |
puchar = (unsigned char *) item;
|
|
|
2371 |
*puchar = uint_val;
|
|
|
2372 |
break;
|
|
|
2373 |
case PLY_SHORT:
|
|
|
2374 |
pshort = (short *) item;
|
|
|
2375 |
*pshort = int_val;
|
|
|
2376 |
break;
|
|
|
2377 |
case PLY_USHORT:
|
|
|
2378 |
pushort = (unsigned short *) item;
|
|
|
2379 |
*pushort = uint_val;
|
|
|
2380 |
break;
|
|
|
2381 |
case PLY_INT:
|
|
|
2382 |
pint = (int *) item;
|
|
|
2383 |
*pint = int_val;
|
|
|
2384 |
break;
|
|
|
2385 |
case PLY_UINT:
|
|
|
2386 |
puint = (unsigned int *) item;
|
|
|
2387 |
*puint = uint_val;
|
|
|
2388 |
break;
|
|
|
2389 |
case PLY_FLOAT:
|
|
|
2390 |
pfloat = (float *) item;
|
|
|
2391 |
*pfloat = double_val;
|
|
|
2392 |
break;
|
|
|
2393 |
case PLY_DOUBLE:
|
|
|
2394 |
pdouble = (double *) item;
|
|
|
2395 |
*pdouble = double_val;
|
|
|
2396 |
break;
|
|
|
2397 |
default:
|
|
|
2398 |
fprintf (stderr, "store_item: bad type = %d\n", type);
|
|
|
2399 |
exit (-1);
|
|
|
2400 |
}
|
|
|
2401 |
}
|
|
|
2402 |
|
|
|
2403 |
|
|
|
2404 |
/******************************************************************************
|
|
|
2405 |
Add an element to a PLY file descriptor.
|
|
|
2406 |
|
|
|
2407 |
Entry:
|
|
|
2408 |
plyfile - PLY file descriptor
|
|
|
2409 |
words - list of words describing the element
|
|
|
2410 |
nwords - number of words in the list
|
|
|
2411 |
******************************************************************************/
|
|
|
2412 |
|
|
|
2413 |
void add_element (PlyFile *plyfile, char **words, int nwords)
|
|
|
2414 |
{
|
|
|
2415 |
PlyElement *elem;
|
|
|
2416 |
|
|
|
2417 |
/* create the new element */
|
|
|
2418 |
elem = (PlyElement *) myalloc (sizeof (PlyElement));
|
|
|
2419 |
elem->name = strdup (words[1]);
|
|
|
2420 |
elem->num = atoi (words[2]);
|
|
|
2421 |
elem->nprops = 0;
|
|
|
2422 |
|
|
|
2423 |
/* make room for new element in the object's list of elements */
|
|
|
2424 |
if (plyfile->nelems == 0)
|
|
|
2425 |
plyfile->elems = (PlyElement **) myalloc (sizeof (PlyElement *));
|
|
|
2426 |
else
|
|
|
2427 |
plyfile->elems = (PlyElement **) realloc (plyfile->elems,
|
|
|
2428 |
sizeof (PlyElement *) * (plyfile->nelems + 1));
|
|
|
2429 |
|
|
|
2430 |
/* add the new element to the object's list */
|
|
|
2431 |
plyfile->elems[plyfile->nelems] = elem;
|
|
|
2432 |
plyfile->nelems++;
|
|
|
2433 |
}
|
|
|
2434 |
|
|
|
2435 |
|
|
|
2436 |
/******************************************************************************
|
|
|
2437 |
Return the type of a property, given the name of the property.
|
|
|
2438 |
|
|
|
2439 |
Entry:
|
|
|
2440 |
name - name of property type
|
|
|
2441 |
|
|
|
2442 |
Exit:
|
|
|
2443 |
returns integer code for property, or 0 if not found
|
|
|
2444 |
******************************************************************************/
|
|
|
2445 |
|
|
|
2446 |
int get_prop_type(char *type_name)
|
|
|
2447 |
{
|
|
|
2448 |
int i;
|
|
|
2449 |
|
|
|
2450 |
for (i = PLY_START_TYPE + 1; i < PLY_END_TYPE; i++)
|
|
|
2451 |
if (equal_strings (type_name, type_names[i]))
|
|
|
2452 |
return (i);
|
|
|
2453 |
|
|
|
2454 |
/* if we get here, we didn't find the type */
|
|
|
2455 |
return (0);
|
|
|
2456 |
}
|
|
|
2457 |
|
|
|
2458 |
|
|
|
2459 |
/******************************************************************************
|
|
|
2460 |
Add a property to a PLY file descriptor.
|
|
|
2461 |
|
|
|
2462 |
Entry:
|
|
|
2463 |
plyfile - PLY file descriptor
|
|
|
2464 |
words - list of words describing the property
|
|
|
2465 |
nwords - number of words in the list
|
|
|
2466 |
******************************************************************************/
|
|
|
2467 |
|
|
|
2468 |
void add_property (PlyFile *plyfile, char **words, int nwords)
|
|
|
2469 |
{
|
|
|
2470 |
int prop_type;
|
|
|
2471 |
int count_type;
|
|
|
2472 |
PlyProperty *prop;
|
|
|
2473 |
PlyElement *elem;
|
|
|
2474 |
|
|
|
2475 |
/* create the new property */
|
|
|
2476 |
|
|
|
2477 |
prop = (PlyProperty *) myalloc (sizeof (PlyProperty));
|
|
|
2478 |
|
|
|
2479 |
if (equal_strings (words[1], "list")) { /* is a list */
|
|
|
2480 |
prop->count_external = get_prop_type (words[2]);
|
|
|
2481 |
prop->external_type = get_prop_type (words[3]);
|
|
|
2482 |
prop->name = strdup (words[4]);
|
|
|
2483 |
prop->is_list = 1;
|
|
|
2484 |
}
|
|
|
2485 |
else { /* not a list */
|
|
|
2486 |
prop->external_type = get_prop_type (words[1]);
|
|
|
2487 |
prop->name = strdup (words[2]);
|
|
|
2488 |
prop->is_list = 0;
|
|
|
2489 |
}
|
|
|
2490 |
|
|
|
2491 |
/* add this property to the list of properties of the current element */
|
|
|
2492 |
|
|
|
2493 |
elem = plyfile->elems[plyfile->nelems - 1];
|
|
|
2494 |
|
|
|
2495 |
if (elem->nprops == 0)
|
|
|
2496 |
elem->props = (PlyProperty **) myalloc (sizeof (PlyProperty *));
|
|
|
2497 |
else
|
|
|
2498 |
elem->props = (PlyProperty **) realloc (elem->props,
|
|
|
2499 |
sizeof (PlyProperty *) * (elem->nprops + 1));
|
|
|
2500 |
|
|
|
2501 |
elem->props[elem->nprops] = prop;
|
|
|
2502 |
elem->nprops++;
|
|
|
2503 |
}
|
|
|
2504 |
|
|
|
2505 |
|
|
|
2506 |
/******************************************************************************
|
|
|
2507 |
Add a comment to a PLY file descriptor.
|
|
|
2508 |
|
|
|
2509 |
Entry:
|
|
|
2510 |
plyfile - PLY file descriptor
|
|
|
2511 |
line - line containing comment
|
|
|
2512 |
******************************************************************************/
|
|
|
2513 |
|
|
|
2514 |
void add_comment (PlyFile *plyfile, char *line)
|
|
|
2515 |
{
|
|
|
2516 |
int i;
|
|
|
2517 |
|
|
|
2518 |
/* skip over "comment" and leading spaces and tabs */
|
|
|
2519 |
i = 7;
|
|
|
2520 |
while (line[i] == ' ' || line[i] == '\t')
|
|
|
2521 |
i++;
|
|
|
2522 |
|
|
|
2523 |
ply_put_comment (plyfile, &line[i]);
|
|
|
2524 |
}
|
|
|
2525 |
|
|
|
2526 |
|
|
|
2527 |
/******************************************************************************
|
|
|
2528 |
Add a some object information to a PLY file descriptor.
|
|
|
2529 |
|
|
|
2530 |
Entry:
|
|
|
2531 |
plyfile - PLY file descriptor
|
|
|
2532 |
line - line containing text info
|
|
|
2533 |
******************************************************************************/
|
|
|
2534 |
|
|
|
2535 |
void add_obj_info (PlyFile *plyfile, char *line)
|
|
|
2536 |
{
|
|
|
2537 |
int i;
|
|
|
2538 |
|
|
|
2539 |
/* skip over "obj_info" and leading spaces and tabs */
|
|
|
2540 |
i = 8;
|
|
|
2541 |
while (line[i] == ' ' || line[i] == '\t')
|
|
|
2542 |
i++;
|
|
|
2543 |
|
|
|
2544 |
ply_put_obj_info (plyfile, &line[i]);
|
|
|
2545 |
}
|
|
|
2546 |
|
|
|
2547 |
|
|
|
2548 |
/******************************************************************************
|
|
|
2549 |
Copy a property.
|
|
|
2550 |
******************************************************************************/
|
|
|
2551 |
|
|
|
2552 |
void copy_property(PlyProperty *dest, PlyProperty *src)
|
|
|
2553 |
{
|
|
|
2554 |
dest->name = strdup (src->name);
|
|
|
2555 |
dest->external_type = src->external_type;
|
|
|
2556 |
dest->internal_type = src->internal_type;
|
|
|
2557 |
dest->offset = src->offset;
|
|
|
2558 |
|
|
|
2559 |
dest->is_list = src->is_list;
|
|
|
2560 |
dest->count_external = src->count_external;
|
|
|
2561 |
dest->count_internal = src->count_internal;
|
|
|
2562 |
dest->count_offset = src->count_offset;
|
|
|
2563 |
}
|
|
|
2564 |
|
|
|
2565 |
|
|
|
2566 |
/******************************************************************************
|
|
|
2567 |
Allocate some memory.
|
|
|
2568 |
|
|
|
2569 |
Entry:
|
|
|
2570 |
size - amount of memory requested (in bytes)
|
|
|
2571 |
lnum - line number from which memory was requested
|
|
|
2572 |
fname - file name from which memory was requested
|
|
|
2573 |
******************************************************************************/
|
|
|
2574 |
|
|
|
2575 |
char *my_alloc(int size, int lnum, char *fname)
|
|
|
2576 |
{
|
|
|
2577 |
char *ptr;
|
|
|
2578 |
|
|
|
2579 |
ptr = (char *) malloc (size);
|
|
|
2580 |
|
|
|
2581 |
if (ptr == 0) {
|
|
|
2582 |
fprintf(stderr, "Memory allocation bombed on line %d in %s\n", lnum, fname);
|
|
|
2583 |
}
|
|
|
2584 |
|
|
|
2585 |
return (ptr);
|
|
|
2586 |
}
|
|
|
2587 |
|
|
|
2588 |
|
|
|
2589 |
/******************************************************************************
|
|
|
2590 |
Determine whether a property currently exists for an element.
|
|
|
2591 |
|
|
|
2592 |
Entry:
|
|
|
2593 |
plyfile - file identifier
|
|
|
2594 |
elem_name - name of element that information is being specified about
|
|
|
2595 |
prop_name - name of property to find
|
|
|
2596 |
******************************************************************************/
|
|
|
2597 |
|
|
|
2598 |
int
|
|
|
2599 |
ply_is_valid_property(PlyFile *plyfile, char *elem_name, char *prop_name)
|
|
|
2600 |
{
|
|
|
2601 |
int i;
|
|
|
2602 |
PlyElement *elem;
|
|
|
2603 |
PlyProperty *prop;
|
|
|
2604 |
int index;
|
|
|
2605 |
|
|
|
2606 |
/* find information about the element */
|
|
|
2607 |
elem = find_element (plyfile, elem_name);
|
|
|
2608 |
plyfile->which_elem = elem;
|
|
|
2609 |
prop = find_property (elem, prop_name, &index);
|
|
|
2610 |
|
|
|
2611 |
return (prop!=NULL);
|
|
|
2612 |
}
|
|
|
2613 |
|
|
|
2614 |
#ifdef __cplusplus
|
|
|
2615 |
}
|
|
|
2616 |
#endif
|