Geometry Noes: Curve Resample Node

This node generates a naturally parametarized (even length edge) poly
spline version of every spline in the input. There are two modes,
"Count", and "Length". These are similar to the same options for the
line primitive node in end points mode.

I implemented this instead of a "Sample Points" node, because for this
operation it's trivial to keep the result as a curve, which is nice
since it increases flexibility, and because it can make instancing
simpler, i.e. using the transforms of each evaluated point rather than
requiring the construction of a "rotation" attribute.

Differential Revision: https://developer.blender.org/D11173

1 files changed, 9 insertions, 0 deletions

diff --git a/source/blender/blenkernel/intern/spline_nurbs.cc b/source/blender/blenkernel/intern/spline_nurbs.cc
index 37d1232cfeb..2022b9fb85a 100644
--- a/source/blender/blenkernel/intern/spline_nurbs.cc
+++ b/source/blender/blenkernel/intern/spline_nurbs.cc
@@ -78,6 +78,15 @@ void NURBSpline::add_point(const float3 position,
   this->mark_cache_invalid();
 }
 
+void NURBSpline::resize(const int size)
+{
+  positions_.resize(size);
+  radii_.resize(size);
+  tilts_.resize(size);
+  weights_.resize(size);
+  this->mark_cache_invalid();
+}
+
 MutableSpan<float3> NURBSpline::positions()
 {
   return positions_;