diff options
Diffstat (limited to 'libdimension')
| -rw-r--r-- | libdimension/perspective.c | 14 |
1 files changed, 5 insertions, 9 deletions
diff --git a/libdimension/perspective.c b/libdimension/perspective.c index aba3a97..02f6c7c 100644 --- a/libdimension/perspective.c +++ b/libdimension/perspective.c @@ -30,7 +30,7 @@ static dmnsn_line dmnsn_perspective_camera_ray_fn(const dmnsn_camera *camera, double x, double y); /* Create a new perspective camera. Rays are aimed from the origin to a screen - located on the z = 1 frame, from (-0.5, -0.5) to (0.5, 0.5). Rays are then + located on the z = 1 plane, from (-0.5, -0.5) to (0.5, 0.5). Rays are then transformed by the camera's transformation matrix. */ dmnsn_camera * dmnsn_new_perspective_camera() @@ -69,13 +69,9 @@ dmnsn_perspective_camera_ray_fn(const dmnsn_camera *camera, double x, double y) { dmnsn_matrix *trans = camera->ptr; - dmnsn_line l; - - /* Rays originate at the origin, oddly enough */ - l.x0 = dmnsn_new_vector(0.0, 0.0, 0.0); - - /* Aim at the z = 1 plane */ - l.n = dmnsn_new_vector(x - 0.5, y - 0.5, 1.0); - + dmnsn_line l = dmnsn_new_line( + dmnsn_zero, + dmnsn_new_vector(x - 0.5, y - 0.5, 1.0) + ); return dmnsn_transform_line(*trans, l); } |