69 lines
2.0 KiB
C++
69 lines
2.0 KiB
C++
#include "load_obj.hh"
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#define TINYOBJLOADER_IMPLEMENTATION
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#include "tiny_obj_loader.h"
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#include <QFile>
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#include <QDebug>
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QVector<GLfloat> load_obj(const char *path, int flags) {
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QFile obj_file(path);
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obj_file.open(QIODevice::ReadOnly | QIODevice::Text);
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std::string obj = obj_file.readAll().toStdString();
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tinyobj::ObjReaderConfig cfg;
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cfg.triangulate = true;
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cfg.vertex_color = false;
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tinyobj::ObjReader reader;
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if (!reader.ParseFromString(obj, "", cfg)) {
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if (!reader.Error().empty()) {
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qWarning() << "Erreur lors de la lecture de du modèle";
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}
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exit(1);
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}
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// if (!reader.Warning().empty()) {
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// qWarning() << "TinyObjReader: " << reader.Warning();
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// }
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auto& attrib = reader.GetAttrib();
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auto& shapes = reader.GetShapes();
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QVector<GLfloat> verts;
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for (size_t s = 0; s < shapes.size(); s++) {
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// Loop over faces(polygon)
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size_t index_offset = 0;
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for (size_t f = 0; f < shapes[s].mesh.num_face_vertices.size(); f++) {
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size_t fv = shapes[s].mesh.num_face_vertices[f];
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// Loop over vertices in the face.
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for (size_t v = 0; v < fv; v++) {
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tinyobj::index_t idx = shapes[s].mesh.indices[index_offset + v];
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tinyobj::real_t vx = attrib.vertices[3*idx.vertex_index+0];
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tinyobj::real_t vy = attrib.vertices[3*idx.vertex_index+1];
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tinyobj::real_t vz = attrib.vertices[3*idx.vertex_index+2];
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verts.append(vx);
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verts.append(vy);
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verts.append(vz);
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if (flags & LOAD_OBJ_NORMALS) {
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tinyobj::real_t nx = attrib.normals[3*idx.normal_index+0];
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tinyobj::real_t ny = attrib.normals[3*idx.normal_index+1];
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tinyobj::real_t nz = attrib.normals[3*idx.normal_index+2];
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verts.append(nx);
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verts.append(ny);
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verts.append(nz);
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}
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if (flags & LOAD_OBJ_UVS) {
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tinyobj::real_t ts = attrib.texcoords[2*idx.texcoord_index+0];
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tinyobj::real_t tt = attrib.texcoords[2*idx.texcoord_index+1];
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verts.append(ts);
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verts.append(tt);
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}
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// qDebug() << "vert" << vx << vy << vz << "tex" << ts << tt;
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}
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index_offset += fv;
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}
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}
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return verts;
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}
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