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| author | Tavian Barnes <tavianator@gmail.com> | 2009-07-02 04:53:24 +0000 |
|---|---|---|
| committer | Tavian Barnes <tavianator@gmail.com> | 2009-07-02 04:53:24 +0000 |
| commit | 4d9f72b850c7a86af3a8fb36ff8d48220a6a0914 (patch) | |
| tree | 3be778378e13e36e4be218668613a3a60fdae5cf /libdimension | |
| parent | c1accd2356394e8c905cc7de2eb6b8c453157708 (diff) | |
| download | dimension-4d9f72b850c7a86af3a8fb36ff8d48220a6a0914.tar.xz | |
Provide interface to modify a perspective camera's transformation
matrix.
Diffstat (limited to 'libdimension')
| -rw-r--r-- | libdimension/cameras.c | 19 | ||||
| -rw-r--r-- | libdimension/dimension/cameras.h | 3 |
2 files changed, 21 insertions, 1 deletions
diff --git a/libdimension/cameras.c b/libdimension/cameras.c index c6dcf59..f346bbc 100644 --- a/libdimension/cameras.c +++ b/libdimension/cameras.c @@ -60,12 +60,29 @@ dmnsn_delete_perspective_camera(dmnsn_camera *camera) } } +/* Get the transformation matrix */ +dmnsn_matrix +dmnsn_get_perspective_camera_trans(const dmnsn_camera *camera) +{ + dmnsn_matrix *trans = camera->ptr; + return *trans; +} + +/* Set the transformation matrix */ +void +dmnsn_set_perspective_camera_trans(dmnsn_camera *camera, dmnsn_matrix T) +{ + dmnsn_matrix *trans = camera->ptr; + *trans = T; +} + +/* Perspective camera ray callback */ static dmnsn_line dmnsn_perspective_camera_ray_fn(const dmnsn_camera *camera, const dmnsn_canvas *canvas, unsigned int x, unsigned int y) { - dmnsn_matrix *trans = (dmnsn_matrix *)camera->ptr; + dmnsn_matrix *trans = camera->ptr; dmnsn_line l; /* Rays originate at the origin, oddly enough */ diff --git a/libdimension/dimension/cameras.h b/libdimension/dimension/cameras.h index bd9d162..a75e9b9 100644 --- a/libdimension/dimension/cameras.h +++ b/libdimension/dimension/cameras.h @@ -31,4 +31,7 @@ dmnsn_camera *dmnsn_new_perspective_camera(dmnsn_matrix trans); void dmnsn_delete_perspective_camera(dmnsn_camera *camera); +dmnsn_matrix dmnsn_get_perspective_camera_trans(const dmnsn_camera *camera); +void dmnsn_set_perspective_camera_trans(dmnsn_camera *camera, dmnsn_matrix T); + #endif /* DIMENSION_CAMERAS_H */ |