1 #ifndef VR_H_

2 #define VR_H_

3

4 /* VR mode init options */

5 enum vr_init_mode {

6 VR_INIT_NONE,

7 VR_INIT_OCULUS,

8 VR_INIT_STEREO

9 };

10

11 /* possible eye values */

12 enum {

13 VR_EYE_CENTER,

14 VR_EYE_LEFT,

15 VR_EYE_RIGHT

16 };

17

18 #ifdef __cplusplus

19 extern "C" {

20 #endif

21

22 int vr_init(enum vr_init_mode mode);

23 void vr_shutdown(void);

24

25 const char *vr_get_display_name(void);

26 void vr_get_display_pos(int *xptr, int *yptr);

27

28 int vr_get_width(void);

29 int vr_get_height(void);

30

31 float vr_get_fov(void);

32 float vr_get_aspect(void);

33

34 void vr_set_eyedist(float ipd);

35 float vr_get_eyedist(void);

36

37 /* expects an array of 4 barrel distortion coefficients:

38 * polar scale: k_0 + k_1 r^2 + k_2 r^4 + k_3 r^6

39 */

40 void vr_set_distort(const float *coef);

41 void vr_get_distort(float *coef);

42

43 void vr_set_prediction_sec(float dt);

44 float vr_get_prediction_sec(void);

45

46 void vr_get_view_matrix(float *res, int eye);

47 void vr_get_proj_matrix(float *res, int eye);

48

49 /* expects an array of at least 3 floats (x, y, z, offset). */

50 void vr_get_translation(float *offs);

51 /* expects an array of at least 4 floats (x, y, z, w, quaternion). */

52 void vr_get_rotation(float *quat);

53 /* expects an array of at least 3 floats (pitch, yaw, roll, angles). */

54 void vr_get_rotation_euler(float *euler);

55

56 /* OpenGL stuff */

57 void vr_draw_eye(int eye, unsigned int tex, float tex_scale_x, float tex_scale_y);

58

59 #ifdef __cplusplus

60 }

61 #endif

62

63 #endif /* VR_H_ */