BLI_matrix space_transform: Add a 'local-invariant' setter.

`BLI_space_transform_from_matrices()` defines a 'global-invariant' transform
(same point in global space, two different coordinates in local and target spaces).

New `BLI_space_transform_global_from_matrices()` is kind of opposite, it defines
a 'local-invariant' transform (two different points in global space, same coordinates in local and target spaces).

Useful to 'match' meshes.

1 files changed, 1 insertions, 0 deletions

diff --git a/source/blender/blenlib/BLI_math_matrix.h b/source/blender/blenlib/BLI_math_matrix.h
index f7eeb1ec7a1..d7a309e0835 100644
--- a/source/blender/blenlib/BLI_math_matrix.h
+++ b/source/blender/blenlib/BLI_math_matrix.h
@@ -241,6 +241,7 @@ typedef struct SpaceTransform {
 } SpaceTransform;
 
 void BLI_space_transform_from_matrices(struct SpaceTransform *data, float local[4][4], float target[4][4]);
+void BLI_space_transform_global_from_matrices(struct SpaceTransform *data, float local[4][4], float target[4][4]);
 void BLI_space_transform_apply(const struct SpaceTransform *data, float co[3]);
 void BLI_space_transform_invert(const struct SpaceTransform *data, float co[3]);
 void BLI_space_transform_apply_normal(const struct SpaceTransform *data, float no[3]);