mirror of
https://github.com/bulletphysics/bullet3
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100 lines
2.1 KiB
C++
100 lines
2.1 KiB
C++
//
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// Copyright 2012-2013, Syoyo Fujita.
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//
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// Licensed under 2-clause BSD liecense.
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//
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#ifndef _TINY_OBJ_LOADER_H
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#define _TINY_OBJ_LOADER_H
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#include <string>
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#include <vector>
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#include <map>
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struct CommonFileIOInterface;
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namespace tinyobj
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{
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struct vertex_index_t
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{
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int v_idx, vt_idx, vn_idx;
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vertex_index_t() : v_idx(-1), vt_idx(-1), vn_idx(-1) {}
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explicit vertex_index_t(int idx) : v_idx(idx), vt_idx(idx), vn_idx(idx) {}
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vertex_index_t(int vidx, int vtidx, int vnidx)
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: v_idx(vidx), vt_idx(vtidx), vn_idx(vnidx) {}
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};
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typedef std::vector<vertex_index_t> face_t;
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typedef struct
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{
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std::string name;
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float ambient[3];
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float diffuse[3];
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float specular[3];
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float transmittance[3];
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float emission[3];
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float shininess;
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float transparency; // 1 == opaque; 0 == fully transparent
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std::string ambient_texname; // map_Ka
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std::string diffuse_texname; // map_Kd
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std::string specular_texname; // map_Ks
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std::string normal_texname;
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std::map<std::string, std::string> unknown_parameter;
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} material_t;
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// Index struct to support different indices for vtx/normal/texcoord.
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// -1 means not used.
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typedef struct
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{
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int vertex_index;
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int normal_index;
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int texcoord_index;
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} index_t;
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typedef struct
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{
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std::vector<index_t> indices;
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} mesh_t;
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typedef struct
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{
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std::string name;
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material_t material;
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mesh_t mesh;
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} shape_t;
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// Vertex attributes
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struct attrib_t
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{
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std::vector<float> vertices; // 'v'(xyz)
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std::vector<float> normals; // 'vn'
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std::vector<float> texcoords; // 'vt'(uv)
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attrib_t() {}
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};
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/// Loads .obj from a file.
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/// 'shapes' will be filled with parsed shape data
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/// The function returns error string.
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/// Returns empty string when loading .obj success.
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/// 'mtl_basepath' is optional, and used for base path for .mtl file.
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#ifdef USE_STREAM
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std::string LoadObj(
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attrib_t& attrib,
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std::vector<shape_t>& shapes, // [output]
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const char* filename,
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const char* mtl_basepath = NULL);
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#else
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std::string
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LoadObj(
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attrib_t& attrib,
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std::vector<shape_t>& shapes,
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const char* filename,
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const char* mtl_basepath,
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CommonFileIOInterface* fileIO);
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#endif
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}; // namespace tinyobj
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#endif // _TINY_OBJ_LOADER_H
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