Godot-Shader-Lib/documentation/Nodes/UV/Swirl.md

Swirl node

Applies a swirl warping effect similar to a black hole to the value of input UV. Very similar to Twirl node, key difference is it uses the inverse of vector length (One minus).

Default value for uv input will be vec2(0, 0) for shader modes PARTICLES, SKY and FOG to avoid errors becouse UV variable is not available for these modes.

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Inputs

Name	Type	Binding	Description
uv	vec2	UV	Input UV value
center	vec2	none	Center reference point
strength	float	none	Strength of the effect
offset	vec2	none	Individual channel offsets

Outputs

Name	Type	Binding	Description
uv	vec2	None	Output UV value

ShaderInc location
res://addons/ShaderLib/UV/SwirlUV.gdshaderinc

Method signature
vec2 swirl_uv(vec2 uv, vec2 center, float strength, vec2 offset)

Parameters

Name	Type	Description
uv	vec2	Input uv
center	vec2	Center reference point
strength	float	Strength of the effect
offset	vec2	Individual channel offsets

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