erebus
diff liberebus/src/texture.h @ 0:4abdce1361b9
initial commit
author | John Tsiombikas <nuclear@member.fsf.org> |
---|---|
date | Sun, 27 Apr 2014 16:02:47 +0300 |
parents | |
children | 474a0244f57d |
line diff
1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 1.2 +++ b/liberebus/src/texture.h Sun Apr 27 16:02:47 2014 +0300 1.3 @@ -0,0 +1,30 @@ 1.4 +#ifndef TEXTURE_H_ 1.5 +#define TEXTURE_H_ 1.6 + 1.7 +#include "image.h" 1.8 +#include "color.h" 1.9 + 1.10 +class Texture { 1.11 +public: 1.12 + Image<float> img; 1.13 + 1.14 + inline Color lookup(float u, float v) const; 1.15 + 1.16 + bool load(const char *fname) { return img.load(fname); } 1.17 +}; 1.18 + 1.19 + 1.20 +inline Color Texture::lookup(float u, float v) const 1.21 +{ 1.22 + int xsz = img.get_width(); 1.23 + int ysz = img.get_height(); 1.24 + 1.25 + int x = (float)u / (float)xsz; 1.26 + int y = (float)v / (float)ysz; 1.27 + 1.28 + float *pix = img.get_pixels() + ((y % ysz) * xsz + (x % xsz)) * 4; 1.29 + return Color(pix[0], pix[1], pix[2]); 1.30 +} 1.31 + 1.32 + 1.33 +#endif // TEXTURE_H_ 1.34 \ No newline at end of file