1 #ifndef VOLUME_H_

2 #define VOLUME_H_

3

4 #include <vector>

5 #include "image.h"

6

7 #define HIST_SIZE 256

8

9 class Mesh;

10

11 class Volume {

12 private:

13 std::vector<Image> slices;

14

15 int width;

16 int height;

17 float zaspect;

18 float x_rot;

19

20 unsigned int vol_tex;

21 mutable bool vol_tex_valid;

22

23 void create_vol_tex() const;

24

25 public:

26 int histogram[HIST_SIZE];

27 int max_histogram_value;

28

29 public:

30 Volume();

31 ~Volume();

32

33 bool load(const char *fname);

34

35 bool push_slice(Image &&slice);

36 const Image *get_slice(int num_slice) const;

37

38 // z must be in [0, 1]

39 const Image *get_slice_by_z(float z) const;

40

41 int get_slice_count() const;

42

43 // z must be in [0, 1]

44 int get_slice_idx_by_z(float z) const;

45

46 unsigned int get_texture() const;

47

48 float get_volume_rotation() const;

49

50 void create_mesh(Mesh *mesh, float tmin, float tmax, int xres, int yres, int zres);

51

52 void create_histogram();

53 void draw() const;

54 };

55

56 float transfer_function(float x, float low_thres, float high_thres);

57

58 #endif // VOLUME_H_