Geometry Nodes: Curve Fill Node

This node takes a curve geometry input and creates a filled mesh at Z=0
using a constrained Delaunay triangulation algorithm. Because of the
choice of algorithm, the results should be higher quality than the
filling for 2D curve objects.

This commit adds an initial fairly simple version of the node, but more
features may be added in the future, like transferring attributes when
necessary, or an index attribute input to break up the calculations
into smaller chunks to improve performance.

Differential Revision: https://developer.blender.org/D11846

2 files changed, 2 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_node.h b/source/blender/blenkernel/BKE_node.h
index 06528cd213c..379d4332473 100644
--- a/source/blender/blenkernel/BKE_node.h
+++ b/source/blender/blenkernel/BKE_node.h
@@ -1472,6 +1472,7 @@ int ntreeTexExecTree(struct bNodeTree *ntree,
 #define GEO_NODE_CURVE_SET_HANDLES 1072
 #define GEO_NODE_CURVE_SPLINE_TYPE 1073
 #define GEO_NODE_CURVE_SELECT_HANDLES 1074
+#define GEO_NODE_CURVE_FILL 1075
 
 /** \} */
 
diff --git a/source/blender/blenkernel/intern/node.cc b/source/blender/blenkernel/intern/node.cc
index 2a0e05a2616..fb43d1fc87f 100644
--- a/source/blender/blenkernel/intern/node.cc
+++ b/source/blender/blenkernel/intern/node.cc
@@ -5138,6 +5138,7 @@ static void registerGeometryNodes()
   register_node_type_geo_collection_info();
   register_node_type_geo_convex_hull();
   register_node_type_geo_curve_endpoints();
+  register_node_type_geo_curve_fill();
   register_node_type_geo_curve_length();
   register_node_type_geo_curve_primitive_bezier_segment();
   register_node_type_geo_curve_primitive_circle();