Geometry Nodes: Fields version of attribute proximity node

Add a fields-aware implementation of the attribute proximity node.
The Source position is an implicit position field, but can be
connected with a position input node with alterations before use.
The target input and mode function the same as the original node.

Patch by Johnny Matthews with edits from Hans Goudey (@HooglyBoogly).

Differential Revision: https://developer.blender.org/D12635

1 files changed, 11 insertions, 0 deletions

diff --git a/source/blender/makesdna/DNA_node_types.h b/source/blender/makesdna/DNA_node_types.h
index 538a80ce3e1..ffa6cb307b8 100644
--- a/source/blender/makesdna/DNA_node_types.h
+++ b/source/blender/makesdna/DNA_node_types.h
@@ -1362,6 +1362,11 @@ typedef struct NodeGeometryAttributeProximity {
   uint8_t target_geometry_element;
 } NodeGeometryAttributeProximity;
 
+typedef struct NodeGeometryProximity {
+  /* GeometryNodeProximityTargetType. */
+  uint8_t target_element;
+} NodeGeometryProximity;
+
 typedef struct NodeGeometryVolumeToMesh {
   /* VolumeToMeshResolutionMode */
   uint8_t resolution_mode;
@@ -1946,6 +1951,12 @@ typedef enum GeometryNodeAttributeProximityTargetType {
   GEO_NODE_PROXIMITY_TARGET_FACES = 2,
 } GeometryNodeAttributeProximityTargetType;
 
+typedef enum GeometryNodeProximityTargetType {
+  GEO_NODE_PROX_TARGET_POINTS = 0,
+  GEO_NODE_PROX_TARGET_EDGES = 1,
+  GEO_NODE_PROX_TARGET_FACES = 2,
+} GeometryNodeProximityTargetType;
+
 typedef enum GeometryNodeBooleanOperation {
   GEO_NODE_BOOLEAN_INTERSECT = 0,
   GEO_NODE_BOOLEAN_UNION = 1,