1 /*

2 Stereoscopic tunnel for iOS.

3 Copyright (C) 2011 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

19 #ifndef CAM_H_

20 #define CAM_H_

21

22 enum {

23 CAM_CENTER,

24 CAM_LEFT,

25 CAM_RIGHT

26 };

27

28 /* reset to the initial state */

29 void cam_reset(void); /* all */

30 void cam_reset_view(void); /* view parameters */

31 void cam_reset_proj(void); /* projection parameters */

32 void cam_reset_stereo(void); /* stereo parameters */

33

34 /* camera viewing parameters */

35 void cam_pan(int dx, int dy); /* pan across X/Z plane */

36 void cam_height(int dh); /* move verticaly */

37 void cam_rotate(int dx, int dy); /* rotate around local Y and X axis */

38 void cam_zoom(int dz); /* dolly the camera fwd/back */

39

40 /* camera projection parameters */

41 void cam_clip(float n, float f); /* set clipping planes */

42 void cam_fov(float f); /* vertical field of view in degrees */

43 void cam_aspect(float a); /* aspect ratio (width / height) */

44

45 /* stereo parameters */

46 void cam_separation(float s);

47 void cam_focus_dist(float d);

48

49 /* multiply the camera view matrix on top of the current matrix stack

50 * (which should be GL_MODELVIEW)

51 */

52 void cam_view_matrix(void);

53 void cam_stereo_view_matrix(int eye);

54

55 /* multiply the camera projection matrix on top of the current matrix stack

56 * (which should be GL_PROJECTION)

57 */

58 void cam_proj_matrix(void);

59 void cam_stereo_proj_matrix(int eye);

60

61 #endif /* CAM_H_ */