TurbulenceEffect Class |
Namespace: Microsoft.Graphics.Canvas.Effects
public sealed class TurbulenceEffect : ICanvasEffect, IGraphicsEffect, IGraphicsEffectSource, ICanvasImage, IDisposable
The TurbulenceEffect type exposes the following members.
Name | Description | |
---|---|---|
TurbulenceEffect | Initializes a new instance of the TurbulenceEffect class. |
Name | Description | |
---|---|---|
BufferPrecision | Specifies what precision to use for intermediate buffers when drawing this effect. | |
CacheOutput | Enables caching the output from drawing this effect. | |
Frequency | Base frequencies in the X and Y direction. Units are specified in 1/DIPs.
Default value (0.01, 0.01). | |
Name | Attaches a user-defined name string to the effect. | |
Noise | The turbulence noise mode.
Default value FractalSum. | |
Octaves | Number of octaves for the noise function. Default value 1. | |
Offset | Offsets the coordinates where the turbulence output is generated. Default value (0,0). | |
Seed | The seed for the pseudo random generator. Default value 0. | |
Size | Specifies the size of image to generate. Default value (512, 512). | |
Tileable | Turns stitching on or off. If set, the base frequency is adjusted so the
output bitmap can be tiled. Default value false. |
Name | Description | |
---|---|---|
Dispose | Releases all resources used by the effect. | |
GetBounds(ICanvasResourceCreator) | Retrieves the bounds of this TurbulenceEffect. | |
GetBounds(ICanvasResourceCreator, Matrix3x2) | Retrieves the bounds of this TurbulenceEffect. | |
GetInvalidRectangles | Queries what regions of the effect output have changed since it was last drawn. | |
GetRequiredSourceRectangle | Queries what part of an effect source image is needed to draw an output region. | |
GetRequiredSourceRectangles | Queries what parts of the effect source images are needed to draw an output region. | |
InvalidateSourceRectangle | Notifies the effect that one of its source images has changed. |
Supported by Win2D but not Windows.UI.Composition.
The Turbulence effect computes the sum of one or more octaves of the Perlin noise function. Perlin noise is a pseudo-random function whose value depends on the frequency, position, and seed value. This effect outputs pixel values in premultiplied alpha.
This Windows Runtime type corresponds to the D2D Turbulence effect.