add unmodified version of TinyRenderer, a 500 line software renderer with vertex and pixel shaders, texture mapping and Wavefront .obj support.

examples/TinyRenderer/model.h

@@ -0,0 +1,33 @@
+#ifndef __MODEL_H__
+#define __MODEL_H__
+#include <vector>
+#include <string>
+#include "geometry.h"
+#include "tgaimage.h"
+
+class Model {
+private:
+    std::vector<Vec3f> verts_;
+    std::vector<std::vector<Vec3i> > faces_; // attention, this Vec3i means vertex/uv/normal
+    std::vector<Vec3f> norms_;
+    std::vector<Vec2f> uv_;
+    TGAImage diffusemap_;
+    TGAImage normalmap_;
+    TGAImage specularmap_;
+    void load_texture(std::string filename, const char *suffix, TGAImage &img);
+public:
+    Model(const char *filename);
+    ~Model();
+    int nverts();
+    int nfaces();
+    Vec3f normal(int iface, int nthvert);
+    Vec3f normal(Vec2f uv);
+    Vec3f vert(int i);
+    Vec3f vert(int iface, int nthvert);
+    Vec2f uv(int iface, int nthvert);
+    TGAColor diffuse(Vec2f uv);
+    float specular(Vec2f uv);
+    std::vector<int> face(int idx);
+};
+#endif //__MODEL_H__
+