Splines: Function to copy spline settings without data

Often you need to copy a spline to do an operation, but don't want
to manually copy over all of the settings. I've already forgotten to
do it once anyway. These functions copy a spline's "settings" into a
new spline, but not the data. I tried to avoid duplicating any copying
so this is easier to extend in the future.

Differential Revision: https://developer.blender.org/D11463

1 files changed, 7 insertions, 0 deletions

diff --git a/source/blender/blenkernel/intern/spline_poly.cc b/source/blender/blenkernel/intern/spline_poly.cc
index 5c33b0052fc..5f8e81d5ad0 100644
--- a/source/blender/blenkernel/intern/spline_poly.cc
+++ b/source/blender/blenkernel/intern/spline_poly.cc
@@ -28,6 +28,13 @@ SplinePtr PolySpline::copy() const
   return std::make_unique<PolySpline>(*this);
 }
 
+SplinePtr PolySpline::copy_settings() const
+{
+  std::unique_ptr<PolySpline> copy = std::make_unique<PolySpline>();
+  copy_base_settings(*this, *copy);
+  return copy;
+}
+
 int PolySpline::size() const
 {
   const int size = positions_.size();