Subversion Repositories gelsvn

Rev

Rev 102 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
39 bj 1 
#include <sys/types.h>
2 
#include <sys/stat.h>
3 
#include <fcntl.h>
4 
 
5 
#if defined(_MSC_VER)
6 
#include <io.h>
7 
 
8 
#pragma message("Note: including lib: expat.lib\n")
9 
#pragma comment(lib, "expat.lib")
10 
 
11 
#else
12 
#include <unistd.h>
13 
#endif
14 
#include <expat.h>
15 
 
16 
#include "Util/Timer.h"
17 
#include "Util/Parse.h"
18 
#include "HMesh/Manifold.h"
19 
#include "build_manifold.h"
20 
#include <iostream>
21 
 
22 
#include "x3d_load.h"
23 
 
24 
using namespace CGLA;
25 
using namespace Util;
26 
using namespace std;
27 
using namespace HMesh;
28 
 
29 
namespace HMeshUtil
30 
{
31 
 
136 jab 32 
		namespace
33 
		{
34 
				vector<int> faces;
35 
				vector<int> indices;
36 
				vector<Vec3f> vertices;
39 bj 37 
 
136 jab 38 
				void coord_index_to_face_vec(const vector<int>& coord_index,
39 
																		 vector<int>& faces,
40 
																		 vector<int>& indices)
39 bj 41 
				{
136 jab 42 
						Face face;
43 
						size_t k=0;
44 
						for(size_t i=0;i<coord_index.size();i++)
39 bj 45 
						{
136 jab 46 
								int idx = coord_index[i];
47 
								if (idx==-1)
48 
								{
49 
										faces.push_back(k);
50 
										k=0;
51 
								}
52 
								else
53 
								{
54 
										indices.push_back(idx);
55 
										++k;
56 
								}
39 bj 57 
						}
58 
				}
59 
 
136 jab 60 
		}
39 bj 61 
 
136 jab 62 
		void startElement(void *userData, const char *name, const char **atts)
63 
		{
64 
				if (strcmp(name,"IndexedFaceSet")==0)
65 
				{
66 
						int j=0;
67 
						while (atts[j]!=0) {
68 
								if (strcmp(atts[j],"coordIndex")==0)
69 
								{
70 
										vector<int> coord_index;
71 
										parse(atts[++j],coord_index);
72 
										coord_index_to_face_vec(coord_index, faces, indices);
73 
								}
74 
								j++;
75 
						}
76 
				}
77 
				else if (strcmp(name,"Shape")==0)
78 
				{
79 
						cout << "Found shape" << endl;
39 bj 80 
				}
136 jab 81 
				else if (strcmp(name,"Coordinate")==0)
82 
				{
83 
						int j=0;
84 
						while (atts[j]!=0)
85 
						{
86 
								if (strcmp(atts[j],"point")==0) {
87 
										parse(atts[++j],vertices);
88 
								}
89 
								j++;
90 
						}
39 bj 91 
				}
136 jab 92 
		}
39 bj 93 
 
136 jab 94 
		void endElement(void *userData, const char *name)
95 
		{
96 
				if (strcmp(name,"Shape")==0)
97 
				{
98 
						cout << "Shape ends" << endl;
99 
				}
100 
		}
39 bj 101 
 
136 jab 102 
		int find_last_of(const std::string& F, const std::string& C)
103 
		{
104 
				size_t pos = F.find_last_of(C);
105 
				if (pos == string::npos)
106 
						return -1;
107 
				return pos;
108 
		}
39 bj 109 
 
136 jab 110 
		bool x3d_load(const std::string& filename, Manifold& mani)
111 
		{
112 
				faces.clear();
113 
				indices.clear();
114 
				vertices.clear();
39 bj 115 
 
136 jab 116 
				Timer tim;
117 
				tim.start();
39 bj 118 
 
136 jab 119 
				std::string baseurl;
120 
				int idx = s_max(find_last_of(filename, "\\"),
121 
												find_last_of(filename, "/"));
39 bj 122 
 
123 
 
136 jab 124 
				if(idx != -1)
125 
						baseurl = std::string(filename.substr(0, idx+1));
39 bj 126 
 
127 
 
136 jab 128 
				XML_Parser parser = XML_ParserCreate(NULL);
129 
				int done=0;
130 
				XML_SetElementHandler(parser, startElement, endElement);
39 bj 131 
 
136 jab 132 
				int in;
133 
				if ((in=open(filename.data(),O_RDONLY)) == -1) {
134 
						cout << "Error. "<<  filename << " not found" << endl;
135 
						assert(0);
136 
						return false;
137 
				}
138 
 
139 
				struct stat stat_buf;
140 
				fstat(in, &stat_buf);
141 
 
142 
				const size_t BUF_SIZE = s_min(5000000, static_cast<int>(stat_buf.st_size));
143 
				char* buf2 = new char[BUF_SIZE];
144 
				size_t len;
145 
				do {
146 
						len = read(in, buf2, BUF_SIZE);
147 
						if (len!=BUF_SIZE)
148 
								done=1;
149 
						if (!XML_Parse(parser, buf2, len, done)) {
150 
								cerr << "%s at line %d\n"
151 
										 << XML_ErrorString(XML_GetErrorCode(parser))
152 
										 << XML_GetCurrentLineNumber(parser);
153 
								assert(0);
154 
								return false;
155 
						}
156 
				} while (!done);
157 
				close(in);
158 
				XML_ParserFree(parser);
159 
				delete buf2;
39 bj 160 
 
136 jab 161 
				build_manifold(mani, vertices.size(), &vertices[0], faces.size(),
162 
											 &faces[0], &indices[0]);
39 bj 163 
 
136 jab 164 
				cout << " Loading took " << tim.get_secs() << endl;
165 
				return false;
166 
		}
39 bj 167 
}