Raycast geometry node.

The //Raycast// node intersects rays from one geometry onto another.
It computes hit points on the target mesh and returns normals, distances
and any surface attribute specified by the user.

A ray starts on each point of the input //Geometry//. Rays continue
in the //Ray Direction// until they either hit the //Target Geometry//
or reach the //Ray Length// limit. If the target is hit, the value of the
//Is Hit// attribute in the output mesh will be true. //Hit Position//,
//Hit Normal//, //Hit Distance// and //Hit Index// are the properties of the
target mesh at the intersection point. In addition, a //Target Attribute//
can be specified that is interpolated at the hit point and the result
stored in //Hit Attribute//.

Docs: D11620

Reviewed By: HooglyBoogly

Differential Revision: https://developer.blender.org/D11619

1 files changed, 14 insertions, 0 deletions

diff --git a/source/blender/makesdna/DNA_node_types.h b/source/blender/makesdna/DNA_node_types.h
index 2a5b59f03b1..12625d3408d 100644
--- a/source/blender/makesdna/DNA_node_types.h
+++ b/source/blender/makesdna/DNA_node_types.h
@@ -1379,6 +1379,15 @@ typedef struct NodeGeometryAttributeTransfer {
   uint8_t mapping;
 } NodeGeometryAttributeTransfer;
 
+typedef struct NodeGeometryRaycast {
+  /* GeometryNodeRaycastMapMode. */
+  uint8_t mapping;
+
+  uint8_t input_type_ray_direction;
+  uint8_t input_type_ray_length;
+  char _pad[1];
+} NodeGeometryRaycast;
+
 /* script node mode */
 #define NODE_SCRIPT_INTERNAL 0
 #define NODE_SCRIPT_EXTERNAL 1
@@ -1891,6 +1900,11 @@ typedef enum GeometryNodeAttributeTransferMapMode {
   GEO_NODE_ATTRIBUTE_TRANSFER_NEAREST = 1,
 } GeometryNodeAttributeTransferMapMode;
 
+typedef enum GeometryNodeRaycastMapMode {
+  GEO_NODE_RAYCAST_INTERPOLATED = 0,
+  GEO_NODE_RAYCAST_NEAREST = 1,
+} GeometryNodeRaycastMapMode;
+
 #ifdef __cplusplus
 }
 #endif