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‎README.md‎

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tinyobjloader
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=============
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Tiny but poweful single file wavefront obj loader written in C++. no dependency except for C++ STL.

‎cornell_box.mtl‎

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newmtl white
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Ka 0 0 0
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Kd 1 1 1
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Ks 0 0 0
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newmtl red
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Ka 0 0 0
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Kd 1 0 0
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Ks 0 0 0
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newmtl green
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Ka 0 0 0
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Kd 0 1 0
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Ks 0 0 0
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newmtl blue
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Ka 0 0 0
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Kd 0 0 1
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Ks 0 0 0
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newmtl light
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Ka 20 20 20
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Kd 1 1 1
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Ks 0 0 0

‎cornell_box.obj‎

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# cornell_box.obj and cornell_box.mtl are grabbed from Intel's embree project.
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# original cornell box data
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# comment
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# empty line including some space
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mtllib cornell_box.mtl
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o floor
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usemtl white
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v 552.8 0.0 0.0
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v 0.0 0.0 0.0
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v 0.0 0.0 559.2
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v 549.6 0.0 559.2
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v 130.0 0.0 65.0
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v 82.0 0.0 225.0
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v 240.0 0.0 272.0
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v 290.0 0.0 114.0
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v 423.0 0.0 247.0
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v 265.0 0.0 296.0
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v 314.0 0.0 456.0
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v 472.0 0.0 406.0
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f 1 2 3 4
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f 8 7 6 5
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f 12 11 10 9
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o light
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usemtl light
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v 343.0 548.0 227.0
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v 343.0 548.0 332.0
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v 213.0 548.0 332.0
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v 213.0 548.0 227.0
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#f -4 -3 -2 -1
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o ceiling
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usemtl white
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v 556.0 548.8 0.0
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v 556.0 548.8 559.2
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v 0.0 548.8 559.2
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v 0.0 548.8 0.0
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f -4 -3 -2 -1
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o back_wall
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usemtl white
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v 549.6 0.0 559.2
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v 0.0 0.0 559.2
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v 0.0 548.8 559.2
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v 556.0 548.8 559.2
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f -4 -3 -2 -1
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o front_wall
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usemtl blue
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v 549.6 0.0 0
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v 0.0 0.0 0
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v 0.0 548.8 0
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v 556.0 548.8 0
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#f -1 -2 -3 -4
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o green_wall
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usemtl green
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v 0.0 0.0 559.2
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v 0.0 0.0 0.0
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v 0.0 548.8 0.0
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v 0.0 548.8 559.2
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f -4 -3 -2 -1
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o red_wall
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usemtl red
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v 552.8 0.0 0.0
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v 549.6 0.0 559.2
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v 556.0 548.8 559.2
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v 556.0 548.8 0.0
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f -4 -3 -2 -1
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o short_block
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usemtl white
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v 130.0 165.0 65.0
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v 82.0 165.0 225.0
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v 240.0 165.0 272.0
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v 290.0 165.0 114.0
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f -4 -3 -2 -1
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v 290.0 0.0 114.0
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v 290.0 165.0 114.0
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v 240.0 165.0 272.0
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v 240.0 0.0 272.0
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f -4 -3 -2 -1
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v 130.0 0.0 65.0
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v 130.0 165.0 65.0
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v 290.0 165.0 114.0
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v 290.0 0.0 114.0
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f -4 -3 -2 -1
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v 82.0 0.0 225.0
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v 82.0 165.0 225.0
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v 130.0 165.0 65.0
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v 130.0 0.0 65.0
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f -4 -3 -2 -1
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v 240.0 0.0 272.0
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v 240.0 165.0 272.0
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v 82.0 165.0 225.0
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v 82.0 0.0 225.0
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f -4 -3 -2 -1
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o tall_block
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usemtl white
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v 423.0 330.0 247.0
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v 265.0 330.0 296.0
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v 314.0 330.0 456.0
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v 472.0 330.0 406.0
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f -4 -3 -2 -1
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usemtl white
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v 423.0 0.0 247.0
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v 423.0 330.0 247.0
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v 472.0 330.0 406.0
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v 472.0 0.0 406.0
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f -4 -3 -2 -1
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v 472.0 0.0 406.0
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v 472.0 330.0 406.0
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v 314.0 330.0 456.0
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v 314.0 0.0 456.0
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f -4 -3 -2 -1
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v 314.0 0.0 456.0
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v 314.0 330.0 456.0
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v 265.0 330.0 296.0
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v 265.0 0.0 296.0
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f -4 -3 -2 -1
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v 265.0 0.0 296.0
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v 265.0 330.0 296.0
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v 423.0 330.0 247.0
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v 423.0 0.0 247.0
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f -4 -3 -2 -1
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‎premake4.lua‎

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lib_sources = {
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"tiny_obj_loader.cc"
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}
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sources = {
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"test.cc",
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}
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-- premake4.lua
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solution "TinyObjLoaderSolution"
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configurations { "Release", "Debug" }
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if (os.is("windows")) then
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platforms { "x32", "x64" }
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else
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platforms { "native", "x32", "x64" }
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end
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-- A project defines one build target
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project "tinyobjloader"
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kind "ConsoleApp"
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language "C++"
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files { lib_sources, sources }
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configuration "Debug"
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defines { "DEBUG" } -- -DDEBUG
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flags { "Symbols" }
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targetname "test_tinyobjloader_debug"
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configuration "Release"
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-- defines { "NDEBUG" } -- -NDEBUG
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flags { "Symbols", "Optimize" }
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targetname "test_tinyobjloader"

‎test.cc‎

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#include "tiny_obj_loader.h"
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#include <cassert>
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#include <iostream>
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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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std::string inputfile = "cornell_box.obj";
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std::vector<tinyobj::shape_t> shapes;
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if (argc > 1) {
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inputfile = std::string(argv[1]);
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}
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std::string err = tinyobj::LoadObj(shapes, inputfile.c_str());
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if (!err.empty()) {
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std::cerr << err << std::endl;
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}
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std::cout << "# of shapes : " << shapes.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("shape[%ld].indices: %ld\n", i, shapes[i].mesh.indices.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(); 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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}
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return 0;
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}

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