1 #ifndef IMAGE_H_

2 #define IMAGE_H_

3

4 class Image {

5 private:

6 mutable int tex_width, tex_height;

7 mutable unsigned int tex;

8 mutable bool tex_valid;

9

10 public:

11 int width, height;

12 unsigned char *pixels;

13

14 Image();

15 ~Image();

16

17 Image(const Image &img);

18 Image &operator =(const Image &img);

19

20 bool create(int width, int height, unsigned char *pixels = 0);

21 void destroy();

22

23 bool load(const char *fname);

24 bool save(const char *fname) const;

25

26 unsigned int texture() const;

27 int texture_width() const;

28 int texture_height() const;

29

30 void invalidate_texture();

31 };

32

33 void clear_image(Image *img);

34 void clear_image(Image *img, float r, float g, float b, float a = 255);

35 void clear_image_alpha(Image *img, float a);

36

37 enum ImgCombine {

38 IMG_OP_ADD,

39 IMG_OP_SUB,

40 IMG_OP_MUL,

41 IMG_OP_LERP

42 };

43

44 bool combine_image(Image *dest, const Image *aimg, const Image *bimg, ImgCombine op = IMG_OP_LERP, float t = 0.5);

45

46 void convolve_horiz_image(Image *dest, float *kern, int ksz, float scale = 0.0);

47 void convolve_vert_image(Image *dest, float *kern, int ksz, float scale = 0.0);

48

49 #endif // IMAGE_H_