* Adjustment: Update Bullet version to 3.24.

Engine/lib/bullet/examples/TinyRenderer/tgaimage.h

@@ -0,0 +1,112 @@
+#ifndef __IMAGE_H__
+#define __IMAGE_H__
+
+#include <fstream>
+
+#pragma pack(push, 1)
+struct TGA_Header
+{
+	char idlength;
+	char colormaptype;
+	char datatypecode;
+	short colormaporigin;
+	short colormaplength;
+	char colormapdepth;
+	short x_origin;
+	short y_origin;
+	short width;
+	short height;
+	char bitsperpixel;
+	char imagedescriptor;
+};
+#pragma pack(pop)
+
+struct TGAColor
+{
+	unsigned char bgra[4];
+	unsigned char bytespp;
+
+	TGAColor() : bytespp(1)
+	{
+		for (int i = 0; i < 4; i++)
+			bgra[i] = 0;
+	}
+
+	TGAColor(unsigned char R, unsigned char G, unsigned char B, unsigned char A = 255) : bytespp(4)
+	{
+		bgra[0] = B;
+		bgra[1] = G;
+		bgra[2] = R;
+		bgra[3] = A;
+	}
+
+	TGAColor(unsigned char v) : bytespp(1)
+	{
+		for (int i = 0; i < 4; i++) bgra[i] = 0;
+		bgra[0] = v;
+	}
+
+	TGAColor(const unsigned char *p, unsigned char bpp) : bytespp(bpp)
+	{
+		for (int i = 0; i < (int)bpp; i++)
+		{
+			bgra[i] = p[i];
+		}
+		for (int i = bpp; i < 4; i++)
+		{
+			bgra[i] = 0;
+		}
+	}
+
+	unsigned char &operator[](const int i) { return bgra[i]; }
+
+	TGAColor operator*(float intensity) const
+	{
+		TGAColor res = *this;
+		intensity = (intensity > 1.f ? 1.f : (intensity < 0.f ? 0.f : intensity));
+		for (int i = 0; i < 4; i++) res.bgra[i] = bgra[i] * intensity;
+		return res;
+	}
+};
+
+class TGAImage
+{
+protected:
+	unsigned char *data;
+	int width;
+	int height;
+	int bytespp;
+
+	bool load_rle_data(std::ifstream &in);
+	bool unload_rle_data(std::ofstream &out) const;
+
+public:
+	enum Format
+	{
+		GRAYSCALE = 1,
+		RGB = 3,
+		RGBA = 4
+	};
+
+	TGAImage();
+	TGAImage(int w, int h, int bpp);
+	TGAImage(const TGAImage &img);
+	bool read_tga_file(const char *filename);
+	bool write_tga_file(const char *filename, bool rle = true) const;
+	bool flip_horizontally();
+	bool flip_vertically();
+	bool scale(int w, int h);
+	TGAColor get(int x, int y) const;
+
+	bool set(int x, int y, TGAColor &c);
+	bool set(int x, int y, const TGAColor &c);
+	~TGAImage();
+	TGAImage &operator=(const TGAImage &img);
+	int get_width();
+	int get_height();
+	int get_bytespp();
+	unsigned char *buffer();
+	void clear();
+};
+
+#endif  //__IMAGE_H__