377 lines
11 KiB
C++
377 lines
11 KiB
C++
#define TINYOBJLOADER_IMPLEMENTATION
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#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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#ifdef _WIN32
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <windows.h>
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#include <mmsystem.h>
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#ifdef __cplusplus
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}
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#endif
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#pragma comment(lib, "winmm.lib")
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#else
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#if defined(__unix__) || defined(__APPLE__)
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#include <sys/time.h>
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#else
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#include <ctime>
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#endif
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#endif
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// not thread-safe
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class timerutil {
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public:
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#ifdef _WIN32
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typedef DWORD time_t;
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timerutil() { ::timeBeginPeriod(1); }
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~timerutil() { ::timeEndPeriod(1); }
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void start() { t_[0] = ::timeGetTime(); }
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void end() { t_[1] = ::timeGetTime(); }
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time_t sec() { return (time_t)((t_[1] - t_[0]) / 1000); }
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time_t msec() { return (time_t)((t_[1] - t_[0])); }
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time_t usec() { return (time_t)((t_[1] - t_[0]) * 1000); }
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time_t current() { return ::timeGetTime(); }
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#else
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#if defined(__unix__) || defined(__APPLE__)
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typedef unsigned long int time_t;
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void start() { gettimeofday(tv + 0, &tz); }
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void end() { gettimeofday(tv + 1, &tz); }
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time_t sec() { return (time_t)(tv[1].tv_sec - tv[0].tv_sec); }
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time_t msec() {
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return this->sec() * 1000 +
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(time_t)((tv[1].tv_usec - tv[0].tv_usec) / 1000);
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}
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time_t usec() {
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return this->sec() * 1000000 + (time_t)(tv[1].tv_usec - tv[0].tv_usec);
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}
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time_t current() {
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struct timeval t;
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gettimeofday(&t, NULL);
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return (time_t)(t.tv_sec * 1000 + t.tv_usec);
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}
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#else // C timer
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// using namespace std;
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typedef clock_t time_t;
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void start() { t_[0] = clock(); }
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void end() { t_[1] = clock(); }
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time_t sec() { return (time_t)((t_[1] - t_[0]) / CLOCKS_PER_SEC); }
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time_t msec() { return (time_t)((t_[1] - t_[0]) * 1000 / CLOCKS_PER_SEC); }
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time_t usec() { return (time_t)((t_[1] - t_[0]) * 1000000 / CLOCKS_PER_SEC); }
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time_t current() { return (time_t)clock(); }
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#endif
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#endif
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private:
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#ifdef _WIN32
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DWORD t_[2];
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#else
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#if defined(__unix__) || defined(__APPLE__)
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struct timeval tv[2];
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struct timezone tz;
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#else
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time_t t_[2];
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#endif
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#endif
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};
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static void PrintInfo(const std::vector<tinyobj::shape_t>& shapes, const std::vector<tinyobj::material_t>& materials, bool triangulate = true)
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{
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std::cout << "# of shapes : " << shapes.size() << std::endl;
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std::cout << "# of materials : " << materials.size() << std::endl;
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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("Size of 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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printf("Size of shape[%ld].material_ids: %ld\n", i, shapes[i].mesh.material_ids.size());
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assert((shapes[i].mesh.indices.size() % 3) == 0);
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for (size_t f = 0; f < shapes[i].mesh.indices.size() / 3; f++) {
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printf(" idx[%ld] = %d, %d, %d. mat_id = %d\n", f, shapes[i].mesh.indices[3*f+0], shapes[i].mesh.indices[3*f+1], shapes[i].mesh.indices[3*f+2], shapes[i].mesh.material_ids[f]);
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}
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} else {
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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("Size of shape[%ld].material_ids: %ld\n", i, shapes[i].mesh.material_ids.size());
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assert(shapes[i].mesh.material_ids.size() == shapes[i].mesh.num_vertices.size());
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for (size_t m = 0; m < shapes[i].mesh.material_ids.size(); m++) {
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printf(" material_id[%ld] = %d\n", m,
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shapes[i].mesh.material_ids[m]);
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}
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}
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printf("shape[%ld].num_faces: %ld\n", i, shapes[i].mesh.num_vertices.size());
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for (size_t v = 0; v < shapes[i].mesh.num_vertices.size(); v++) {
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printf(" num_vertices[%ld] = %ld\n", v,
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static_cast<long>(shapes[i].mesh.num_vertices[v]));
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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].num_tags: %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 (size_t j = 0; j < shapes[i].mesh.tags[t].intValues.size(); ++j)
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{
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printf("%ld", static_cast<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 (size_t 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 (size_t 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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}
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for (size_t i = 0; i < materials.size(); i++) {
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printf("material[%ld].name = %s\n", i, materials[i].name.c_str());
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printf(" material.Ka = (%f, %f ,%f)\n", materials[i].ambient[0], materials[i].ambient[1], materials[i].ambient[2]);
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printf(" material.Kd = (%f, %f ,%f)\n", materials[i].diffuse[0], materials[i].diffuse[1], materials[i].diffuse[2]);
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printf(" material.Ks = (%f, %f ,%f)\n", materials[i].specular[0], materials[i].specular[1], materials[i].specular[2]);
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printf(" material.Tr = (%f, %f ,%f)\n", materials[i].transmittance[0], materials[i].transmittance[1], materials[i].transmittance[2]);
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printf(" material.Ke = (%f, %f ,%f)\n", materials[i].emission[0], materials[i].emission[1], materials[i].emission[2]);
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printf(" material.Ns = %f\n", materials[i].shininess);
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printf(" material.Ni = %f\n", materials[i].ior);
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printf(" material.dissolve = %f\n", materials[i].dissolve);
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printf(" material.illum = %d\n", materials[i].illum);
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printf(" material.map_Ka = %s\n", materials[i].ambient_texname.c_str());
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printf(" material.map_Kd = %s\n", materials[i].diffuse_texname.c_str());
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printf(" material.map_Ks = %s\n", materials[i].specular_texname.c_str());
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printf(" material.map_Ns = %s\n", materials[i].specular_highlight_texname.c_str());
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printf(" material.map_bump = %s\n", materials[i].bump_texname.c_str());
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printf(" material.map_d = %s\n", materials[i].alpha_texname.c_str());
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printf(" material.disp = %s\n", materials[i].displacement_texname.c_str());
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std::map<std::string, std::string>::const_iterator it(materials[i].unknown_parameter.begin());
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std::map<std::string, std::string>::const_iterator itEnd(materials[i].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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unsigned int flags = 1 )
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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::vector<tinyobj::material_t> materials;
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timerutil t;
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t.start();
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std::string err;
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bool ret = tinyobj::LoadObj(shapes, materials, err, filename, basepath, flags);
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t.end();
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if (!err.empty()) {
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std::cerr << err << std::endl;
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}
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if (!ret) {
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printf("Failed to load/parse .obj.\n");
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return false;
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}
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printf("Parse time: %lu [msecs]\n", t.msec());
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bool triangulate( ( flags & tinyobj::triangulation ) == tinyobj::triangulation );
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PrintInfo(shapes, materials, 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\n"
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"map_Kd tmp.png \n"); // #92(whitespace after filename)
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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 bool operator() (
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const std::string& matId,
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std::vector<material_t>& materials,
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std::map<std::string, int>& matMap,
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std::string& err)
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{
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(void)matId;
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(void)err;
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LoadMtl(matMap, materials, m_matSStream);
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return true;
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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::vector<tinyobj::material_t> materials;
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std::string err;
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bool ret = tinyobj::LoadObj(shapes, materials, err, objStream, matSSReader);
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if (!err.empty()) {
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std::cerr << err << std::endl;
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}
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if (!ret) {
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return false;
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}
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PrintInfo(shapes, materials);
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// #92
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for (size_t i = 0; i < materials.size(); i++) {
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if (materials[i].name.compare("light") == 0) {
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assert(materials[i].diffuse_texname.compare("tmp.png") == 0);
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}
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}
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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, 0));
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}
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return 0;
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}
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