SphericalHarmonicsL2
Spherical harmonics up to the second order (3 bands, 9 coefficients).
Read time 1 minuteLast updated 4 days ago
Definition
- Type: Struct
- Namespace: UnityEngine.Rendering
- Assembly: UnityEngine.CoreModule
- Implements: IEquatable<SphericalHarmonicsL2>
public struct SphericalHarmonicsL2 : IEquatable<SphericalHarmonicsL2>
Remarks
Spherical harmonics (SH) represent a function or signal over directions, and are commonly used in computer graphics to efficiently evaluate smooth lighting. Unity uses them for LightProbes and environment lighting.
L2 spherical harmonics is composed of 9 coefficients for each color channel.
Properties
Property | Description |
|---|---|
| this[] | Access individual SH coefficients. |
Methods
Method | Description |
|---|---|
| AddAmbientLight | Add an ambient light to the spherical harmonics. |
| AddDirectionalLight | Add a directional light to the spherical harmonics. |
| Clear | Clears the spherical harmonics coefficients to zero. |
| Evaluate | Evaluates the spherical harmonics for each given direction. The |
Operators
Operator | Description |
|---|---|
| operator + | Adds two spherical harmonics. |
| operator == | Returns true if the spherical harmonics are equal. |
| operator != | Returns true if the spherical harmonics are different. |
| operator * | Scales SH by a given factor. |