Raycaster

Functionality

Functionality is almost completely analogous to the two built-in blender operators bpy.context.scene.ray_cast and object.ray_cast. Ray is casted from “start” vector to “end” vector and can hit polygons of input objects.

see docs: bpy.types.Object.ray_cast and bpy.types.Scene.ray_cast

Input sockets

• Verts - Vectors of objects receiving rays

• Faces - Faces of objects receiving rays

• Start - Start position of raytracing

• Direction - Direction of raytracing

Output sockets

socket name	description
Location	Hit location for every raycast
Normal	Normal of hit polygon
Index	index of hit polygon
Distance	Distance between start point and hit location
Success	True or False if ray doesn’t hit any polygon.

Advanced parameters (N-Panel)

• All Triangles: Enable if all the incoming faces are triangles to improve the performance of the algorithm

• Safe Check: Checks the mesh for unreferenced polygons (slows the node but prevents some Blender crashes)

Usage

• Generator-> Sphere

• Number-> Number Range

• Vector-> Vector Polar Input

• SUB: Vector-> Vector Math

• Viz-> Viewer Draw

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calculating shadow.blend.zip

Replay with new nodes

• Generator-> Plane

• Transform-> Matrix Apply (verts)

• Analyzers-> Distance Point Plane

• Analyzers-> Origins

• CAD-> Intersect Edges

• CAD-> Planar Edgenet to Faces

• Analyzer-> Mesh Filter

• Modifiers->Modifier Change-> Delete Loose

• Analyzers-> Distance Point Plane

• Viz-> Viewer Draw

• SUB, NEG: Vector-> Vector Math

• Matrix-> Matrix In

• Matrix-> Matrix Out

• Scene-> Objects In Lite

• Scene-> Get Objects Data