2fcdd32bc3
+ optional parameter to triangulate polygons to maintain compatibility + added create tag test & example subd crease tag file from OpenSubD source code
239 lines
7.1 KiB
C++
239 lines
7.1 KiB
C++
#include "tiny_obj_loader.h"
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#include <cstdio>
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#include <cstdlib>
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#include <cassert>
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#include <iostream>
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#include <sstream>
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#include <fstream>
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static void PrintInfo(const std::vector<tinyobj::shape_t>& shapes, bool triangulate = true)
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{
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for (size_t i = 0; i < shapes.size(); i++) {
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printf("shape[%ld].name = %s\n", i, shapes[i].name.c_str());
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printf("shape[%ld].indices: %ld\n", i, shapes[i].mesh.indices.size());
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if (triangulate)
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{
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assert((shapes[i].mesh.indices.size() % 3) == 0);
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}
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for (size_t f = 0; f < shapes[i].mesh.indices.size(); f++) {
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printf(" idx[%ld] = %d\n", f, shapes[i].mesh.indices[f]);
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}
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printf("shape[%ld].vertices: %ld\n", i, shapes[i].mesh.positions.size());
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assert((shapes[i].mesh.positions.size() % 3) == 0);
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for (size_t v = 0; v < shapes[i].mesh.positions.size() / 3; v++) {
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printf(" v[%ld] = (%f, %f, %f)\n", v,
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shapes[i].mesh.positions[3*v+0],
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shapes[i].mesh.positions[3*v+1],
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shapes[i].mesh.positions[3*v+2]);
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}
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printf("shape[%ld].numFaces: %ld\n", i, shapes[i].mesh.numVertices.size());
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for (size_t v = 0; v < shapes[i].mesh.numVertices.size(); v++) {
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printf(" numVerts[%ld] = %ld\n", v,
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(long) shapes[i].mesh.numVertices[v]);
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}
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printf("shape[%ld].numTags: %ld\n", i, shapes[i].mesh.tags.size());
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for (size_t t = 0; t < shapes[i].mesh.tags.size(); t++) {
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printf(" tag[%ld] = %s ", t, shapes[i].mesh.tags[t].name.c_str());
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printf(" ints: [");
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for (int j = 0; j < shapes[i].mesh.tags[t].intValues.size(); ++j)
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{
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printf("%ld", (long) shapes[i].mesh.tags[t].intValues[j]);
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if (j < (shapes[i].mesh.tags[t].intValues.size()-1))
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{
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printf(", ");
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}
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}
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printf("]");
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printf(" floats: [");
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for (int j = 0; j < shapes[i].mesh.tags[t].floatValues.size(); ++j)
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{
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printf("%f", shapes[i].mesh.tags[t].floatValues[j]);
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if (j < (shapes[i].mesh.tags[t].floatValues.size()-1))
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{
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printf(", ");
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}
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}
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printf("]");
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printf(" strings: [");
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for (int j = 0; j < shapes[i].mesh.tags[t].stringValues.size(); ++j)
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{
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printf("%s", shapes[i].mesh.tags[t].stringValues[j].c_str());
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if (j < (shapes[i].mesh.tags[t].stringValues.size()-1))
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{
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printf(", ");
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}
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}
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printf("]");
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printf("\n");
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}
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printf("shape[%ld].material.name = %s\n", i, shapes[i].material.name.c_str());
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printf(" material.Ka = (%f, %f ,%f)\n", shapes[i].material.ambient[0], shapes[i].material.ambient[1], shapes[i].material.ambient[2]);
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printf(" material.Kd = (%f, %f ,%f)\n", shapes[i].material.diffuse[0], shapes[i].material.diffuse[1], shapes[i].material.diffuse[2]);
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printf(" material.Ks = (%f, %f ,%f)\n", shapes[i].material.specular[0], shapes[i].material.specular[1], shapes[i].material.specular[2]);
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printf(" material.Tr = (%f, %f ,%f)\n", shapes[i].material.transmittance[0], shapes[i].material.transmittance[1], shapes[i].material.transmittance[2]);
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printf(" material.Ke = (%f, %f ,%f)\n", shapes[i].material.emission[0], shapes[i].material.emission[1], shapes[i].material.emission[2]);
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printf(" material.Ns = %f\n", shapes[i].material.shininess);
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printf(" material.Ni = %f\n", shapes[i].material.ior);
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printf(" material.dissolve = %f\n", shapes[i].material.dissolve);
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printf(" material.illum = %d\n", shapes[i].material.illum);
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printf(" material.map_Ka = %s\n", shapes[i].material.ambient_texname.c_str());
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printf(" material.map_Kd = %s\n", shapes[i].material.diffuse_texname.c_str());
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printf(" material.map_Ks = %s\n", shapes[i].material.specular_texname.c_str());
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printf(" material.map_Ns = %s\n", shapes[i].material.normal_texname.c_str());
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std::map<std::string, std::string>::const_iterator it(shapes[i].material.unknown_parameter.begin());
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std::map<std::string, std::string>::const_iterator itEnd(shapes[i].material.unknown_parameter.end());
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for (; it != itEnd; it++) {
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printf(" material.%s = %s\n", it->first.c_str(), it->second.c_str());
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}
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printf("\n");
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}
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}
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static bool
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TestLoadObj(
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const char* filename,
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const char* basepath = NULL,
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bool triangulate = true)
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{
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std::cout << "Loading " << filename << std::endl;
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std::vector<tinyobj::shape_t> shapes;
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std::string err = tinyobj::LoadObj(shapes, filename, basepath, triangulate);
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if (!err.empty()) {
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std::cerr << err << std::endl;
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return false;
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}
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PrintInfo(shapes, triangulate);
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return true;
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}
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static bool
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TestStreamLoadObj()
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{
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std::cout << "Stream Loading " << std::endl;
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std::stringstream objStream;
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objStream
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<< "mtllib cube.mtl\n"
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"\n"
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"v 0.000000 2.000000 2.000000\n"
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"v 0.000000 0.000000 2.000000\n"
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"v 2.000000 0.000000 2.000000\n"
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"v 2.000000 2.000000 2.000000\n"
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"v 0.000000 2.000000 0.000000\n"
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"v 0.000000 0.000000 0.000000\n"
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"v 2.000000 0.000000 0.000000\n"
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"v 2.000000 2.000000 0.000000\n"
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"# 8 vertices\n"
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"\n"
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"g front cube\n"
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"usemtl white\n"
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"f 1 2 3 4\n"
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"g back cube\n"
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"# expects white material\n"
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"f 8 7 6 5\n"
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"g right cube\n"
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"usemtl red\n"
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"f 4 3 7 8\n"
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"g top cube\n"
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"usemtl white\n"
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"f 5 1 4 8\n"
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"g left cube\n"
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"usemtl green\n"
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"f 5 6 2 1\n"
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"g bottom cube\n"
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"usemtl white\n"
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"f 2 6 7 3\n"
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"# 6 elements";
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std::string matStream(
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"newmtl white\n"
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"Ka 0 0 0\n"
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"Kd 1 1 1\n"
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"Ks 0 0 0\n"
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"\n"
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"newmtl red\n"
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"Ka 0 0 0\n"
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"Kd 1 0 0\n"
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"Ks 0 0 0\n"
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"\n"
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"newmtl green\n"
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"Ka 0 0 0\n"
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"Kd 0 1 0\n"
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"Ks 0 0 0\n"
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"\n"
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"newmtl blue\n"
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"Ka 0 0 0\n"
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"Kd 0 0 1\n"
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"Ks 0 0 0\n"
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"\n"
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"newmtl light\n"
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"Ka 20 20 20\n"
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"Kd 1 1 1\n"
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"Ks 0 0 0");
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using namespace tinyobj;
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class MaterialStringStreamReader:
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public MaterialReader
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{
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public:
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MaterialStringStreamReader(const std::string& matSStream): m_matSStream(matSStream) {}
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virtual ~MaterialStringStreamReader() {}
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virtual std::string operator() (
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const std::string& matId,
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std::map<std::string, material_t>& matMap)
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{
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return LoadMtl(matMap, m_matSStream);
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}
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private:
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std::stringstream m_matSStream;
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};
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MaterialStringStreamReader matSSReader(matStream);
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std::vector<tinyobj::shape_t> shapes;
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std::string err = tinyobj::LoadObj(shapes, objStream, matSSReader);
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if (!err.empty()) {
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std::cerr << err << std::endl;
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return false;
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}
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PrintInfo(shapes);
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return true;
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}
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int
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main(
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int argc,
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char **argv)
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{
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if (argc > 1) {
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const char* basepath = NULL;
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if (argc > 2) {
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basepath = argv[2];
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}
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assert(true == TestLoadObj(argv[1], basepath));
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} else {
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assert(true == TestLoadObj("cornell_box.obj"));
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assert(true == TestLoadObj("cube.obj"));
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assert(true == TestStreamLoadObj());
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assert(true == TestLoadObj("catmark_torus_creases0.obj", NULL, false));
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}
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return 0;
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}
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