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API > API/Runtime > API/Runtime/Core > API/Runtime/Core/Math
References
| Module | Core |
| Header | /Engine/Source/Runtime/Core/Public/Math/Sobol.h |
| Include | #include "Math/Sobol.h" |
Syntax
class FSobol
Remarks
Support for Sobol quasi-random numbers
Functions
| Type | Name | Description | |
|---|---|---|---|
  |
uint16 | ComputeGPUSpatialSeed
(
int32 x, |
Return value for GSystemTextures.SobolSampling |
  |
float | Evaluate
(
int32 Index, |
Evaluate Sobol number from one of the traditional Sobol dimensions at the given index |
  |
FVector2D | Evaluate
(
int32 Index, |
Evaluate Sobol number from within a 2D cell at given index |
  |
FVector | Evaluate
(
int32 Index, |
Evaluate Sobol number from within a 3D cell at given index |
  |
float | Next
(
int32 Index, |
Evaluate next Sobol number from one of the traditional Sobol dimensions |
  |
FVector2D | Next
(
int32 Index, |
Evaluate next Sobol number from within a 2D cell |
  |
FVector | Next
(
int32 Index, |
Evaluate next Sobol number from within a 3D cell |
Constants
| Name | Description |
|---|---|
| Cell2DDirectionNumbers | 24-bit Sobol direction numbers per cell |
| Cell2DGrayNumbers | 24-bit Sobol direction numbers per cell in Gray-code order |
| Cell3DDirectionNumbers | 24-bit Sobol direction numbers per cell |
| Cell3DGrayNumbers | 24-bit Sobol direction numbers per cell in Gray-code order |
| DirectionNumbers | 24-bit Sobol direction numbers for 32-bit index |
| GrayNumbers | 24-bit Sobol direction numbers for Gray code order |
| MaxCell2DBits | Maximum number of bits in a 2D cell coordinate allows cell grids from 1x1 to 2^MaxCell2DBits x 2^MaxCell2DBits |
| MaxCell3DBits | Maximum number of bits in a 3D cell coordinate allows cell grids from 1x1x1 to 2^MaxCell3DBits x 2^MaxCell3DBits x 2^MaxCell3DBits |
| MaxDimension | Number of Sobol dimensions in DirectionNumbers and GrayNumbers tables (full Joe and Kuo table is 21201) |