onion

Keywords:

• hollow
• onion
• shell

definition_in

Thickness Field

Iterations Field

filter

onion

RayTK

v0.42

Converts a solid SDF to a thin shell of the surface.

The shell is created centered on the surface, with half of the Thickness going toward the outside and the other half on the inside. This has the effect of increasing the size of the outside of the shape.

Without somehow slicing through the shell, using things like knife or slice, you generally won’t be able to tell the difference between this and round, in that it will seem to just increase the size of the shape.

See https://www.shadertoy.com/view/MlcBDj

Parameters

Name	Description	Regular Handling	Read-Only Handling
Enable
Thickness	Thickness of the shell, centered on the input surface.	Runtime	Baked
Iterations		Runtime	Baked
Side		Runtime	Baked
Both: Inside: Outside:

Inputs

• definition_in: (required)
  • Coordinate Types: float vec2 vec3 vec4
  • Context Types: Context MaterialContext CameraContext LightContext RayContext ParticleContext VertexContext PixelContext
  • Return Types: float vec4 Sdf
• Thickness Field: (optional)
  • Coordinate Types: float vec2 vec3 vec4
  • Context Types: Context MaterialContext CameraContext LightContext RayContext ParticleContext VertexContext PixelContext
  • Return Types: float
  • Supports Variables From Inputs: inputOp1
• Iterations Field: (optional)
  • Coordinate Types: float vec2 vec3 vec4
  • Context Types: Context MaterialContext CameraContext LightContext RayContext ParticleContext VertexContext PixelContext
  • Return Types: float
  • Supports Variables From Inputs: inputOp1 thicknessField