213 lines
6.3 KiB
C++
213 lines
6.3 KiB
C++
#include "tiny_obj_loader.h"
|
|
|
|
#include <cstdio>
|
|
#include <cstdlib>
|
|
#include <cassert>
|
|
#include <iostream>
|
|
#include <sstream>
|
|
#include <fstream>
|
|
|
|
static void PrintInfo(const std::vector<tinyobj::shape_t>& shapes, const std::vector<tinyobj::material_t>& materials)
|
|
{
|
|
std::cout << "# of shapes : " << shapes.size() << std::endl;
|
|
std::cout << "# of materials : " << materials.size() << std::endl;
|
|
|
|
for (size_t i = 0; i < shapes.size(); i++) {
|
|
printf("shape[%ld].name = %s\n", i, shapes[i].name.c_str());
|
|
printf("Size of shape[%ld].indices: %ld\n", i, shapes[i].mesh.indices.size());
|
|
printf("Size of shape[%ld].material_ids: %ld\n", i, shapes[i].mesh.material_ids.size());
|
|
assert((shapes[i].mesh.indices.size() % 3) == 0);
|
|
for (size_t f = 0; f < shapes[i].mesh.indices.size() / 3; f++) {
|
|
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]);
|
|
}
|
|
|
|
printf("shape[%ld].vertices: %ld\n", i, shapes[i].mesh.positions.size());
|
|
assert((shapes[i].mesh.positions.size() % 3) == 0);
|
|
for (size_t v = 0; v < shapes[i].mesh.positions.size() / 3; v++) {
|
|
printf(" v[%ld] = (%f, %f, %f)\n", v,
|
|
shapes[i].mesh.positions[3*v+0],
|
|
shapes[i].mesh.positions[3*v+1],
|
|
shapes[i].mesh.positions[3*v+2]);
|
|
}
|
|
}
|
|
|
|
for (size_t i = 0; i < materials.size(); i++) {
|
|
printf("material[%ld].name = %s\n", i, materials[i].name.c_str());
|
|
printf(" material.Ka = (%f, %f ,%f)\n", materials[i].ambient[0], materials[i].ambient[1], materials[i].ambient[2]);
|
|
printf(" material.Kd = (%f, %f ,%f)\n", materials[i].diffuse[0], materials[i].diffuse[1], materials[i].diffuse[2]);
|
|
printf(" material.Ks = (%f, %f ,%f)\n", materials[i].specular[0], materials[i].specular[1], materials[i].specular[2]);
|
|
printf(" material.Tr = (%f, %f ,%f)\n", materials[i].transmittance[0], materials[i].transmittance[1], materials[i].transmittance[2]);
|
|
printf(" material.Ke = (%f, %f ,%f)\n", materials[i].emission[0], materials[i].emission[1], materials[i].emission[2]);
|
|
printf(" material.Ns = %f\n", materials[i].shininess);
|
|
printf(" material.Ni = %f\n", materials[i].ior);
|
|
printf(" material.dissolve = %f\n", materials[i].dissolve);
|
|
printf(" material.illum = %d\n", materials[i].illum);
|
|
printf(" material.map_Ka = %s\n", materials[i].ambient_texname.c_str());
|
|
printf(" material.map_Kd = %s\n", materials[i].diffuse_texname.c_str());
|
|
printf(" material.map_Ks = %s\n", materials[i].specular_texname.c_str());
|
|
printf(" material.map_Ns = %s\n", materials[i].specular_highlight_texname.c_str());
|
|
printf(" material.map_bump = %s\n", materials[i].bump_texname.c_str());
|
|
printf(" material.map_d = %s\n", materials[i].alpha_texname.c_str());
|
|
printf(" material.disp = %s\n", materials[i].displacement_texname.c_str());
|
|
std::map<std::string, std::string>::const_iterator it(materials[i].unknown_parameter.begin());
|
|
std::map<std::string, std::string>::const_iterator itEnd(materials[i].unknown_parameter.end());
|
|
for (; it != itEnd; it++) {
|
|
printf(" material.%s = %s\n", it->first.c_str(), it->second.c_str());
|
|
}
|
|
printf("\n");
|
|
}
|
|
}
|
|
|
|
static bool
|
|
TestLoadObj(
|
|
const char* filename,
|
|
const char* basepath = NULL)
|
|
{
|
|
std::cout << "Loading " << filename << std::endl;
|
|
|
|
std::vector<tinyobj::shape_t> shapes;
|
|
std::vector<tinyobj::material_t> materials;
|
|
|
|
std::string err;
|
|
bool ret = tinyobj::LoadObj(shapes, materials, err, filename, basepath);
|
|
|
|
if (!err.empty()) {
|
|
std::cerr << err << std::endl;
|
|
}
|
|
|
|
if (!ret) {
|
|
return false;
|
|
}
|
|
|
|
PrintInfo(shapes, materials);
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
static bool
|
|
TestStreamLoadObj()
|
|
{
|
|
std::cout << "Stream Loading " << std::endl;
|
|
|
|
std::stringstream objStream;
|
|
objStream
|
|
<< "mtllib cube.mtl\n"
|
|
"\n"
|
|
"v 0.000000 2.000000 2.000000\n"
|
|
"v 0.000000 0.000000 2.000000\n"
|
|
"v 2.000000 0.000000 2.000000\n"
|
|
"v 2.000000 2.000000 2.000000\n"
|
|
"v 0.000000 2.000000 0.000000\n"
|
|
"v 0.000000 0.000000 0.000000\n"
|
|
"v 2.000000 0.000000 0.000000\n"
|
|
"v 2.000000 2.000000 0.000000\n"
|
|
"# 8 vertices\n"
|
|
"\n"
|
|
"g front cube\n"
|
|
"usemtl white\n"
|
|
"f 1 2 3 4\n"
|
|
"g back cube\n"
|
|
"# expects white material\n"
|
|
"f 8 7 6 5\n"
|
|
"g right cube\n"
|
|
"usemtl red\n"
|
|
"f 4 3 7 8\n"
|
|
"g top cube\n"
|
|
"usemtl white\n"
|
|
"f 5 1 4 8\n"
|
|
"g left cube\n"
|
|
"usemtl green\n"
|
|
"f 5 6 2 1\n"
|
|
"g bottom cube\n"
|
|
"usemtl white\n"
|
|
"f 2 6 7 3\n"
|
|
"# 6 elements";
|
|
|
|
std::string matStream(
|
|
"newmtl white\n"
|
|
"Ka 0 0 0\n"
|
|
"Kd 1 1 1\n"
|
|
"Ks 0 0 0\n"
|
|
"\n"
|
|
"newmtl red\n"
|
|
"Ka 0 0 0\n"
|
|
"Kd 1 0 0\n"
|
|
"Ks 0 0 0\n"
|
|
"\n"
|
|
"newmtl green\n"
|
|
"Ka 0 0 0\n"
|
|
"Kd 0 1 0\n"
|
|
"Ks 0 0 0\n"
|
|
"\n"
|
|
"newmtl blue\n"
|
|
"Ka 0 0 0\n"
|
|
"Kd 0 0 1\n"
|
|
"Ks 0 0 0\n"
|
|
"\n"
|
|
"newmtl light\n"
|
|
"Ka 20 20 20\n"
|
|
"Kd 1 1 1\n"
|
|
"Ks 0 0 0");
|
|
|
|
using namespace tinyobj;
|
|
class MaterialStringStreamReader:
|
|
public MaterialReader
|
|
{
|
|
public:
|
|
MaterialStringStreamReader(const std::string& matSStream): m_matSStream(matSStream) {}
|
|
virtual ~MaterialStringStreamReader() {}
|
|
virtual bool operator() (
|
|
const std::string& matId,
|
|
std::vector<material_t>& materials,
|
|
std::map<std::string, int>& matMap,
|
|
std::string& err)
|
|
{
|
|
LoadMtl(matMap, materials, m_matSStream);
|
|
return true;
|
|
}
|
|
|
|
private:
|
|
std::stringstream m_matSStream;
|
|
};
|
|
|
|
MaterialStringStreamReader matSSReader(matStream);
|
|
std::vector<tinyobj::shape_t> shapes;
|
|
std::vector<tinyobj::material_t> materials;
|
|
std::string err;
|
|
bool ret = tinyobj::LoadObj(shapes, materials, err, objStream, matSSReader);
|
|
|
|
if (!err.empty()) {
|
|
std::cerr << err << std::endl;
|
|
}
|
|
|
|
if (!ret) {
|
|
return false;
|
|
}
|
|
|
|
PrintInfo(shapes, materials);
|
|
|
|
return true;
|
|
}
|
|
|
|
int
|
|
main(
|
|
int argc,
|
|
char **argv)
|
|
{
|
|
|
|
if (argc > 1) {
|
|
const char* basepath = NULL;
|
|
if (argc > 2) {
|
|
basepath = argv[2];
|
|
}
|
|
assert(true == TestLoadObj(argv[1], basepath));
|
|
} else {
|
|
//assert(true == TestLoadObj("cornell_box.obj"));
|
|
//assert(true == TestLoadObj("cube.obj"));
|
|
assert(true == TestStreamLoadObj());
|
|
}
|
|
|
|
return 0;
|
|
}
|