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595 jab 1 
/* ----------------------------------------------------------------------- *
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 * This file is part of GEL, http://www.imm.dtu.dk/GEL
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 * Copyright (C) the authors and DTU Informatics
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 * For license and list of authors, see ../../doc/intro.pdf
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 * ----------------------------------------------------------------------- */
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149 jab 7 
#include "x3d_load.h"
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595 jab 9 
#include <iostream>
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#include <vector>
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#include <string>
149 jab 12 
 
601 jab 13 
#include "../CGLA/Vec3f.h"
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#include "../Util/Timer.h"
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#include "../Util/Parse.h"
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#include "../Util/XmlParser.h"
595 jab 17 
 
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#include "Manifold.h"
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150 jab 20 
namespace HMesh
149 jab 21 
{
595 jab 22 
    using namespace std;
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    using namespace CGLA;
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    using namespace Util;
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377 jrf 26 
    namespace
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    {
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        vector<int> faces;
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        vector<int> indices;
595 jab 30 
        vector<float> vertices;
149 jab 31 
 
595 jab 32 
        void coord_index_to_face_vec(const vector<int>& coord_index, vector<int>& faces, vector<int>& indices)
377 jrf 33 
        {
595 jab 34 
            int k = 0;
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            for(size_t i = 0; i < coord_index.size(); ++i){
377 jrf 36 
                int idx = coord_index[i];
595 jab 37 
                if (idx == -1) {
377 jrf 38 
                    faces.push_back(k);
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                    k=0;
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                }
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                else{
377 jrf 42 
                    indices.push_back(idx);
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                    ++k;
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                }
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            }
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        }
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    }
149 jab 48 
 
375 jrf 49 
    void handle_Shape(XmlElement& elem)
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    {
595 jab 51 
        cout << "Found Shape" << endl;
377 jrf 52 
        elem.process_elements();
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        cout << "Shape ends" << endl;
375 jrf 54 
    }
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    void handle_IndexedFaceSet(XmlElement& elem)
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    {
595 jab 58 
        cout << "Found IndexedFaceSet" << endl;
377 jrf 59 
        vector<int> coord_index;
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        parse(elem.atts["coordIndex"].c_str(), coord_index);
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        coord_index_to_face_vec(coord_index, faces, indices);
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        elem.process_elements();
595 jab 63 
        cout << "IndexedFaceSet ends" << endl;
375 jrf 64 
    }
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    void handle_Coordinate(XmlElement& elem)
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    {
595 jab 68 
        cout << "Found Coordinate" << endl;
377 jrf 69 
        parse(elem.atts["point"].c_str(), vertices);
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        cout << "Coordinate ends" << endl;
375 jrf 71 
    }
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595 jab 73 
    int find_last_of(const string& F, const string& C)
377 jrf 74 
    {
595 jab 75 
        int pos = F.find_last_of(C);
377 jrf 76 
        if (pos == string::npos)
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            return -1;
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        return pos;
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    }
149 jab 80 
 
595 jab 81 
    bool x3d_load(const string& filename, Manifold& m)
377 jrf 82 
    {
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        faces.clear();
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        indices.clear();
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        vertices.clear();
149 jab 86 
 
377 jrf 87 
        Timer tim;
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        tim.start();
149 jab 89 
 
595 jab 90 
        string baseurl;
632 janba 91 
        int idx = std::max(find_last_of(filename, "\\"),
595 jab 92 
            find_last_of(filename, "/"));
149 jab 93 
 
377 jrf 94 
        if(idx != -1)
595 jab 95 
            baseurl = string(filename.substr(0, idx+1));
149 jab 96 
 
375 jrf 97 
        XmlDoc x3d_doc(filename.c_str());
595 jab 98 
 
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        if(!x3d_doc.is_valid())
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            return false;
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        x3d_doc.add_handler("Shape", handle_Shape);
375 jrf 103 
        x3d_doc.add_handler("IndexedFaceSet", handle_IndexedFaceSet);
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        x3d_doc.add_handler("Coordinate", handle_Coordinate);
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        x3d_doc.process_elements();
380 jrf 106 
        x3d_doc.close();
595 jab 107 
 
108 
        cout << "vertices " << vertices.size() << endl;
149 jab 109 
 
595 jab 110 
        m.build(vertices.size()/3,
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            reinterpret_cast<float*>(&vertices[0]),
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            faces.size(),
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            &faces[0],
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            &indices[0]);
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377 jrf 116 
        cout << " Loading took " << tim.get_secs() << endl;
392 jab 117 
        return true;
377 jrf 118 
    }
149 jab 119 
}