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-rw-r--r--libdimension/dimension/camera.h16
1 files changed, 11 insertions, 5 deletions
diff --git a/libdimension/dimension/camera.h b/libdimension/dimension/camera.h
index b1c4ebe..4ea1cbe 100644
--- a/libdimension/dimension/camera.h
+++ b/libdimension/dimension/camera.h
@@ -25,23 +25,29 @@
* A camera.
*/
-typedef dmnsn_line dmnsn_camera_ray_fn(const dmnsn_canvas *canvas,
+/* Forward-declare dmnsn_camera */
+typedef struct dmnsn_camera dmnsn_camera;
+
+/* Camera callback types */
+typedef dmnsn_line dmnsn_camera_ray_fn(const dmnsn_camera *camera,
+ const dmnsn_canvas *canvas,
unsigned int x, unsigned int y);
-typedef struct {
+struct dmnsn_camera {
/* Generic pointer for camera info */
void *ptr;
/* Callback function */
dmnsn_camera_ray_fn *ray_fn;
-} dmnsn_camera;
+};
dmnsn_camera *dmnsn_new_camera();
void dmnsn_delete_camera(dmnsn_camera *camera);
-/* A perspective camera, at the origin, looking at (0, 0, 1) */
+/* A perspective camera, at the origin, looking at (0, 0, 1). Rays are
+ transformed by the transformation matrix `trans'. */
-dmnsn_camera *dmnsn_new_perspective_camera();
+dmnsn_camera *dmnsn_new_perspective_camera(dmnsn_matrix trans);
void dmnsn_delete_perspective_camera(dmnsn_camera *camera);
#endif /* DIMENSION_CAMERA_H */