1 /*

2 glviewvol is an OpenGL 3D volume data viewer

3 Copyright (C) 2014 John Tsiombikas <nuclear@member.fsf.org>

4

5 This program is free software: you can redistribute it and/or modify

6 it under the terms of the GNU General Public License as published by

7 the Free Software Foundation, either version 3 of the License, or

8 (at your option) any later version.

9

10 This program is distributed in the hope that it will be useful,

11 but WITHOUT ANY WARRANTY; without even the implied warranty of

12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

13 GNU General Public License for more details.

14

15 You should have received a copy of the GNU General Public License

16 along with this program. If not, see <http://www.gnu.org/licenses/>.

17 */

18 #ifndef RENDERER_H_

19 #define RENDERER_H_

20

21 #include "volume.h"

22 #include "xfermap.h"

23

24 #define MAX_CLIP_PLANES 4

25

26 class Renderer {

27 protected:

28 int view_width, view_height;

29 Volume *vol;

30

31 float clip_plane[MAX_CLIP_PLANES][4]; // nx,ny,nz,dist

32

33 TransferFunc *xfer;

34 float zscale;

35

36 public:

37 Renderer();

38 virtual ~Renderer();

39

40 virtual bool init();

41 virtual void destroy();

42

43 virtual void set_volume(Volume *vol);

44 virtual Volume *get_volume() const;

45

46 virtual void set_zscale(float zs);

47 virtual float get_zscale() const;

48

49 virtual void set_transfer_function(TransferFunc *xfer);

50 virtual TransferFunc *get_transfer_function() const;

51

52 virtual void set_clipping_plane(int idx, float nx, float ny, float nz, float dist);

53 virtual void disable_clipping_plane(int idx);

54

55 virtual void reshape(int x, int y);

56

57 virtual void update(unsigned int msec);

58 virtual void render() const = 0;

59 };

60

61 #endif // RENDERER_H_