Cleanup: deduplicate generating transform matrices in curves brushes

1 files changed, 14 insertions, 0 deletions

diff --git a/source/blender/editors/sculpt_paint/curves_sculpt_brush.cc b/source/blender/editors/sculpt_paint/curves_sculpt_brush.cc
index 2dd0da9d21a..5955c349eae 100644
--- a/source/blender/editors/sculpt_paint/curves_sculpt_brush.cc
+++ b/source/blender/editors/sculpt_paint/curves_sculpt_brush.cc
@@ -324,4 +324,18 @@ CurvesSculptCommonContext::CurvesSculptCommonContext(const bContext &C)
   this->rv3d = CTX_wm_region_view3d(&C);
 }
 
+CurvesSculptTransforms::CurvesSculptTransforms(const Object &curves_ob, const Object *surface_ob)
+{
+  this->curves_to_world = curves_ob.obmat;
+  this->world_to_curves = this->curves_to_world.inverted();
+
+  if (surface_ob != nullptr) {
+    this->surface_to_world = surface_ob->obmat;
+    this->world_to_surface = this->surface_to_world.inverted();
+    this->surface_to_curves = this->world_to_curves * this->surface_to_world;
+    this->curves_to_surface = this->world_to_surface * this->curves_to_world;
+    this->surface_to_curves_normal = this->surface_to_curves.inverted().transposed();
+  }
+}
+
 }  // namespace blender::ed::sculpt_paint