BoatAttack/Packages/com.unity.shadergraph/Documentation~/Ellipse-Node.md

Ellipse Node

Description

Generates an ellipse shape based on input UV at the size specified by inputs Width and Height. The generated shape can be offset or tiled by connecting a Tiling And Offset Node. Note that in order to preserve the ability to offset the shape within the UV space the shape will not automatically repeat if tiled. To achieve a repeating dot effect first connect your input through a Fraction Node.

NOTE: This Node can only be used in the Fragment Shader Stage.

Ports

Name	Direction	Type	Binding	Description
UV	Input	Vector 2	UV	Input UV value
Width	Input	Vector 1	None	Ellipse width
Height	Input	Vector 1	None	Ellipse height
Out	Output	Vector 1	None	Output value

Generated Code Example

The following example code represents one possible outcome of this node.

void Unity_Ellipse_float(float2 UV, float Width, float Height, out float4 Out)
{
    float d = length((UV * 2 - 1) / float2(Width, Height));
    Out = saturate((1 - d) / fwidth(d));
}