58 lines
1.6 KiB
Markdown
58 lines
1.6 KiB
Markdown
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# Rotate Node
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## Description
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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**.
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## Ports
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| Name | Direction | Type | Binding | Description |
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|:------------ |:-------------|:-----|:---|:---|
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| UV | Input | Vector 2 | UV | Input UV value |
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| Center | Input | Vector 2 | None | Center point to rotate around |
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| Rotation | Input | Float | None | Amount of rotation to apply |
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| Out | Output | Vector 2 | None | Output UV value |
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## Controls
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| Name | Type | Options | Description |
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|:------------ |:-------------|:-----|:---|
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| Unit | Dropdown | Radians, Degrees | Switches the unit for input **Rotation** |
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## Generated Code Example
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The following example code represents one possible outcome of this node per **Unit** mode.
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**Radians**
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```
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void Unity_Rotate_Radians_float(float2 UV, float2 Center, float Rotation, out float2 Out)
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{
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UV -= Center;
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float s, c;
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sincos(Rotation, s, c);
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float3 r3 = float(-s, c, s);
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float2 r1;
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r1.y = dot(UV, r3.xy);
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r1.x = dot(UV, r3.yz);
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Out = r1 + Center;
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}
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```
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**Degrees**
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```
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void Unity_Rotate_Degrees_float(float2 UV, float2 Center, float Rotation, out float2 Out)
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{
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Rotation = Rotation * (3.1415926f/180.0f);
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UV -= Center;
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float s, c;
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sincos(Rotation, s, c);
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float3 r3 = float(-s, c, s);
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float2 r1;
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r1.y = dot(UV, r3.xy);
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r1.x = dot(UV, r3.yz);
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Out = r1 + Center;
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}
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```
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