Geometry Nodes: Add Nodes to Get/Set Built-in Attributes

This commit implements T91780, adding nodes to get and set builtin
attributes. Individual set nodes are used so that the values can be
exposed for direct editing, which is useful for attributes like shade
smooth and spline resolution. Individual input nodes are used to allow
reusing nodes for multiple components, and to allow grouping multiple
outputs conceptually in the same node in the future.

Input Nodes
 - Radius
 - Curve Tilt
 - Curve Handle Positions
 - Is Shade Smooth
 - Spline Resolution
 - Is Spline Cyclic

'Set' Nodes
 - Curve Radius
 - Point Radius
 - Curve Tilt
 - Curve Handle Positions
 - Is Shade Smooth
 - Spline Resolution
 - Is Spline Cyclic

Using hardcoded categories is necessary to add separators to the node
menu.

Differential Revision: https://developer.blender.org/D12687

1 files changed, 5 insertions, 0 deletions

diff --git a/source/blender/makesdna/DNA_node_types.h b/source/blender/makesdna/DNA_node_types.h
index 52a3755a959..05adcc3b922 100644
--- a/source/blender/makesdna/DNA_node_types.h
+++ b/source/blender/makesdna/DNA_node_types.h
@@ -1432,6 +1432,11 @@ typedef struct NodeGeometryCurveSplineType {
   uint8_t spline_type;
 } NodeGeometryCurveSplineType;
 
+typedef struct NodeGeometrySetCurveHandlePositions {
+  /* GeometryNodeCurveHandleMode. */
+  uint8_t mode;
+} NodeGeometrySetCurveHandlePositions;
+
 typedef struct NodeGeometryCurveSetHandles {
   /* GeometryNodeCurveHandleType. */
   uint8_t handle_type;