mirror of https://github.com/axmolengine/axmol.git
96 lines
3.2 KiB
C++
96 lines
3.2 KiB
C++
//
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// Copyright 2012-2015, Syoyo Fujita.
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//
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// Licensed under 2-clause BSD liecense.
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//
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//https://github.com/syoyo/tinyobjloader
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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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namespace tinyobj {
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typedef struct {
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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 ior; // index of refraction
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float dissolve; // 1 == opaque; 0 == fully transparent
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// illumination model (see http://www.fileformat.info/format/material/)
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int illum;
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std::string ambient_texname;
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std::string diffuse_texname;
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std::string specular_texname;
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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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typedef struct {
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std::vector<float> positions;
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std::vector<float> normals;
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std::vector<float> texcoords;
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std::vector<unsigned short> indices;
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std::vector<int> material_ids; // per-mesh material ID
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} mesh_t;
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typedef struct {
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std::string name;
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mesh_t mesh;
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} shape_t;
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class MaterialReader {
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public:
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MaterialReader() {}
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virtual ~MaterialReader() {}
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virtual std::string operator()(const std::string &matId,
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std::vector<material_t> &materials,
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std::map<std::string, int> &matMap) = 0;
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};
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class MaterialFileReader : public MaterialReader {
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public:
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MaterialFileReader(const std::string &mtl_basepath)
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: m_mtlBasePath(mtl_basepath) {}
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virtual ~MaterialFileReader() {}
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virtual std::string operator()(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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private:
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std::string m_mtlBasePath;
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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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std::string LoadObj(std::vector<shape_t> &shapes, // [output]
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std::vector<material_t> &materials, // [output]
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const char *filename, const char *mtl_basepath = NULL);
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/// Loads object from a std::istream, uses GetMtlIStreamFn to retrieve
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/// std::istream for materials.
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/// Returns empty string when loading .obj success.
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std::string LoadObj(std::vector<shape_t> &shapes, // [output]
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std::vector<material_t> &materials, // [output]
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std::istream &inStream, MaterialReader &readMatFn);
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/// Loads materials into std::map
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/// Returns an empty string if successful
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std::string LoadMtl(std::map<std::string, int> &material_map,
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std::vector<material_t> &materials, std::istream &inStream);
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}
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#endif // _TINY_OBJ_LOADER_H
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