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| author | Tavian Barnes <tavianator@gmail.com> | 2011-09-14 18:56:08 -0400 |
|---|---|---|
| committer | Tavian Barnes <tavianator@gmail.com> | 2011-09-14 19:03:07 -0400 |
| commit | 1374b946398544a28ac989c75570d4b7c6937873 (patch) | |
| tree | d3f05e23b5c39201292bfaddaca23220de6652f7 /libdimension/geometry.c | |
| parent | 4bfa19e5a0b426ea6ec99dfebaeb35e507136b74 (diff) | |
| download | dimension-1374b946398544a28ac989c75570d4b7c6937873.tar.xz | |
Transform normals as pseudovectors, not vectors.
Also clarify the vector transformation API. Instead of
dmnsn_transform_vector(), we have:
- dmnsn_transform_point()
- dmnsn_transform_direction()
- dmnsn_transform_normal()
Diffstat (limited to 'libdimension/geometry.c')
| -rw-r--r-- | libdimension/geometry.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/libdimension/geometry.c b/libdimension/geometry.c index 83be0f9..c6a4da2 100644 --- a/libdimension/geometry.c +++ b/libdimension/geometry.c @@ -113,8 +113,8 @@ dmnsn_alignment_matrix(dmnsn_vector from, dmnsn_vector to, { double theta1 = dmnsn_axis_angle(from, to, axis1); dmnsn_matrix align1 = dmnsn_rotation_matrix(dmnsn_vector_mul(theta1, axis1)); - from = dmnsn_transform_vector(align1, from); - axis2 = dmnsn_transform_vector(align1, axis2); + from = dmnsn_transform_direction(align1, from); + axis2 = dmnsn_transform_direction(align1, axis2); double theta2 = dmnsn_axis_angle(from, to, axis2); dmnsn_matrix align2 = dmnsn_rotation_matrix(dmnsn_vector_mul(theta2, axis2)); @@ -381,41 +381,41 @@ dmnsn_transform_bounding_box(dmnsn_matrix trans, dmnsn_bounding_box box) dmnsn_vector corner; dmnsn_bounding_box ret; - ret.min = dmnsn_transform_vector(trans, box.min); + ret.min = dmnsn_transform_point(trans, box.min); ret.max = ret.min; corner = dmnsn_new_vector(box.min.x, box.min.y, box.max.z); - corner = dmnsn_transform_vector(trans, corner); + corner = dmnsn_transform_point(trans, corner); ret.min = dmnsn_vector_min(ret.min, corner); ret.max = dmnsn_vector_max(ret.max, corner); corner = dmnsn_new_vector(box.min.x, box.max.y, box.min.z); - corner = dmnsn_transform_vector(trans, corner); + corner = dmnsn_transform_point(trans, corner); ret.min = dmnsn_vector_min(ret.min, corner); ret.max = dmnsn_vector_max(ret.max, corner); corner = dmnsn_new_vector(box.min.x, box.max.y, box.max.z); - corner = dmnsn_transform_vector(trans, corner); + corner = dmnsn_transform_point(trans, corner); ret.min = dmnsn_vector_min(ret.min, corner); ret.max = dmnsn_vector_max(ret.max, corner); corner = dmnsn_new_vector(box.max.x, box.min.y, box.min.z); - corner = dmnsn_transform_vector(trans, corner); + corner = dmnsn_transform_point(trans, corner); ret.min = dmnsn_vector_min(ret.min, corner); ret.max = dmnsn_vector_max(ret.max, corner); corner = dmnsn_new_vector(box.max.x, box.min.y, box.max.z); - corner = dmnsn_transform_vector(trans, corner); + corner = dmnsn_transform_point(trans, corner); ret.min = dmnsn_vector_min(ret.min, corner); ret.max = dmnsn_vector_max(ret.max, corner); corner = dmnsn_new_vector(box.max.x, box.max.y, box.min.z); - corner = dmnsn_transform_vector(trans, corner); + corner = dmnsn_transform_point(trans, corner); ret.min = dmnsn_vector_min(ret.min, corner); ret.max = dmnsn_vector_max(ret.max, corner); corner = dmnsn_new_vector(box.max.x, box.max.y, box.max.z); - corner = dmnsn_transform_vector(trans, corner); + corner = dmnsn_transform_point(trans, corner); ret.min = dmnsn_vector_min(ret.min, corner); ret.max = dmnsn_vector_max(ret.max, corner); |