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

Rotate Node

Description

Rotates value of input UV around a reference point defined by input Center by the amount of input Rotation. The unit for rotation angle can be selected by the parameter Unit.

Ports

Name	Direction	Type	Binding	Description
UV	Input	Vector 2	UV	Input UV value
Center	Input	Vector 2	None	Center point to rotate around
Rotation	Input	Vector 1	None	Amount of rotation to apply
Out	Output	Vector 2	None	Output UV value

Controls

Name	Type	Options	Description
Unit	Dropdown	Radians, Degrees	Switches the unit for input Rotation

Generated Code Example

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

Radians

void Unity_Rotate_Radians_float(float2 UV, float2 Center, float Rotation, out float2 Out)
{
    UV -= Center;
    float s = sin(Rotation);
    float c = cos(Rotation);
    float2x2 rMatrix = float2x2(c, -s, s, c);
    rMatrix *= 0.5;
    rMatrix += 0.5;
    rMatrix = rMatrix * 2 - 1;
    UV.xy = mul(UV.xy, rMatrix);
    UV += Center;
    Out = UV;
}

Degrees

void Unity_Rotate_Degrees_float(float2 UV, float2 Center, float Rotation, out float2 Out)
{
    Rotation = Rotation * (3.1415926f/180.0f);
    UV -= Center;
    float s = sin(Rotation);
    float c = cos(Rotation);
    float2x2 rMatrix = float2x2(c, -s, s, c);
    rMatrix *= 0.5;
    rMatrix += 0.5;
    rMatrix = rMatrix * 2 - 1;
    UV.xy = mul(UV.xy, rMatrix);
    UV += Center;
    Out = UV;
}