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Model and world

The types component logic works with: the nodes of your model, rigid bodies, sensors, displays and wires, and the value types Vector2, Vector3, Vector4 and Color. CRUMB generates a member for each node you mark, such as Rendering.Wheel or Interactivity.Button, so you rarely name these types yourself.

Type What it is
Color An RGBA colour of four float channels, each normally 0 to 1; the struct does not clamp them.
ComponentLightWrapper Component-logic handle on a ComponentLight, exposed as Rendering..
DisplaySurface A writable pixel surface on a mesh’s material, the render half of a display component (an SPI TFT, an LED matrix, a character LCD), reached as Rendering..Display.
FieldEmitterWrapper Component-logic handle on a FieldEmitter marker, exposed as Rendering..
FieldReceiverWrapper Component-logic handle on a FieldReceiver marker, exposed as Rendering..
GeometryNodeWrapper Handle on a mesh in the part’s Rendering tree, exposed as Rendering.: everything a TransformNodeWrapper does, and the generated handle adds Material (the values of the mesh’s first material),…
ImageSensorWrapper Component-logic handle on an ImageSensor marker, exposed as Rendering..
InteractivityZoneWrapper Component-logic accessor over an InteractivityZone, exposed as Interactivity..
PointerHandler Handler for an interactivity-zone pointer event.
RenderingNodeWrapper The base of the handles on a part’s rendering and connection nodes.
RigidbodyWrapper Component-logic accessor over a physics BODY, exposed as Rendering..Rigidbody on a part whose mesh carries a part-body marker.
SpatialHit The result of one spatial cast from a rendering node (TransformNodeWrapper.Cast, TransformNodeWrapper.CastTo).
TextDecalSurface The writable text of an author-placed decal: a chip’s part number, a capacitor’s value, a range legend on a switch.
TransformNodeWrapper Handle on a node in the part’s Rendering tree, exposed as Rendering..
Vector2 A 2D vector of two floats.
Vector3 A 3D vector of three floats: a rendering node’s position, rotation or scale, a physics force, torque or velocity, a cast hit, or a shader vec3 uniform.
Vector4 A vector of four floats, used for a shader vec4 uniform that is not a colour.
WireConnectionWrapper The visual properties of one of the part’s wires, exposed to component logic as Connections..

Generated from the CRUMB source, commit fcec660d, 2026-10-29.