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main.cpp
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160 lines (124 loc) · 5 KB
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//python3 module for tinyobjloader
//
//usage:
// import tinyobjloader as tol
// model = tol.LoadObj(name)
// print(model["shapes"])
// print(model["materials"]
#include <Python.h>
#include <vector>
#include "../tiny_obj_loader.h"
typedef std::vector<double> vectd;
PyObject*
pyTupleFromfloat3 (float array[3])
{
int i;
PyObject* tuple = PyTuple_New(3);
for(i=0; i<=2 ; i++){
PyTuple_SetItem(tuple, i, PyFloat_FromDouble(array[i]));
}
return tuple;
}
extern "C"
{
static PyObject*
pyLoadObj(PyObject* self, PyObject* args)
{
PyObject *rtndict, *pyshapes, *pymaterials,
*current, *meshobj;
char const* filename;
char *current_name;
vectd vect;
std::vector<tinyobj::shape_t> shapes;
std::vector<tinyobj::material_t> materials;
if(!PyArg_ParseTuple(args, "s", &filename))
return NULL;
std::string err;
tinyobj::LoadObj(shapes, materials, err, filename);
pyshapes = PyDict_New();
pymaterials = PyDict_New();
rtndict = PyDict_New();
for (std::vector<tinyobj::shape_t>::iterator shape = shapes.begin() ;
shape != shapes.end(); shape++)
{
meshobj = PyDict_New();
tinyobj::mesh_t cm = (*shape).mesh;
for (int i = 0; i <= 4; i++ )
{
current = PyList_New(0);
switch(i) {
case 0:
current_name = "positions";
vect = vectd(cm.positions.begin(), cm.positions.end()); break;
case 1:
current_name = "normals";
vect = vectd(cm.normals.begin(), cm.normals.end()); break;
case 2:
current_name = "texcoords";
vect = vectd(cm.texcoords.begin(), cm.texcoords.end()); break;
case 3:
current_name = "indicies";
vect = vectd(cm.indices.begin(), cm.indices.end()); break;
case 4:
current_name = "material_ids";
vect = vectd(cm.material_ids.begin(), cm.material_ids.end()); break;
}
for (vectd::iterator it = vect.begin() ;
it != vect.end(); it++)
{
PyList_Insert(current, it - vect.begin(), PyFloat_FromDouble(*it));
}
PyDict_SetItemString(meshobj, current_name, current);
}
PyDict_SetItemString(pyshapes, (*shape).name.c_str(), meshobj);
}
for (std::vector<tinyobj::material_t>::iterator mat = materials.begin() ;
mat != materials.end(); mat++)
{
PyObject *matobj = PyDict_New();
PyObject *unknown_parameter = PyDict_New();
for (std::map<std::string, std::string>::iterator p = (*mat).unknown_parameter.begin() ;
p != (*mat).unknown_parameter.end(); ++p)
{
PyDict_SetItemString(unknown_parameter, p->first.c_str(), PyUnicode_FromString(p->second.c_str()));
}
PyDict_SetItemString(matobj, "shininess", PyFloat_FromDouble((*mat).shininess));
PyDict_SetItemString(matobj, "ior", PyFloat_FromDouble((*mat).ior));
PyDict_SetItemString(matobj, "dissolve", PyFloat_FromDouble((*mat).dissolve));
PyDict_SetItemString(matobj, "illum", PyLong_FromLong((*mat).illum));
PyDict_SetItemString(matobj, "ambient_texname", PyUnicode_FromString((*mat).ambient_texname.c_str()));
PyDict_SetItemString(matobj, "diffuse_texname", PyUnicode_FromString((*mat).diffuse_texname.c_str()));
PyDict_SetItemString(matobj, "specular_texname", PyUnicode_FromString((*mat).specular_texname.c_str()));
PyDict_SetItemString(matobj, "specular_highlight_texname", PyUnicode_FromString((*mat).specular_highlight_texname.c_str()));
PyDict_SetItemString(matobj, "bump_texname", PyUnicode_FromString((*mat).bump_texname.c_str()));
PyDict_SetItemString(matobj, "displacement_texname", PyUnicode_FromString((*mat).displacement_texname.c_str()));
PyDict_SetItemString(matobj, "alpha_texname", PyUnicode_FromString((*mat).alpha_texname.c_str()));
PyDict_SetItemString(matobj, "ambient", pyTupleFromfloat3((*mat).ambient));
PyDict_SetItemString(matobj, "diffuse", pyTupleFromfloat3((*mat).diffuse));
PyDict_SetItemString(matobj, "specular", pyTupleFromfloat3((*mat).specular));
PyDict_SetItemString(matobj, "transmittance", pyTupleFromfloat3((*mat).transmittance));
PyDict_SetItemString(matobj, "emission", pyTupleFromfloat3((*mat).emission));
PyDict_SetItemString(matobj, "unknown_parameter", unknown_parameter);
PyDict_SetItemString(pymaterials, (*mat).name.c_str(), matobj);
}
PyDict_SetItemString(rtndict, "shapes", pyshapes);
PyDict_SetItemString(rtndict, "materials", pymaterials);
return rtndict;
}
static PyMethodDef mMethods[] = {
{"LoadObj", pyLoadObj, METH_VARARGS},
{NULL, NULL, 0, NULL}
};
static struct PyModuleDef moduledef = {
PyModuleDef_HEAD_INIT,
"tinyobjloader",
NULL,
-1,
mMethods
};
PyMODINIT_FUNC
PyInit_tinyobjloader(void)
{
return PyModule_Create(&moduledef);
}
}