Table of Contents

Class PinchBlock

Namespace
VisioForge.Core.MediaBlocks.VideoProcessing
Assembly
VisioForge.Core.dll

Video pinch distortion effect block that creates inward or outward warping from a center point. This block applies a pinch or bulge distortion to video content, pulling pixels toward or pushing them away from a central point. Features configurable intensity for both positive (bulge) and negative (pinch) effects, creating lens-like distortions. Essential for creative effects, caricature-style distortions, fisheye corrections, and artistic video transformations requiring radial compression or expansion effects. Implements the VisioForge.Core.MediaBlocks.MediaBlock. Implements the VisioForge.Core.MediaBlocks.IMediaBlockInternals. Implements the IDisposable.

public class PinchBlock : MediaBlock, IMediaBlock, IDisposable, IMediaBlockInternals

Inheritance

Implements

Inherited Members

Extension Methods

Constructors

PinchBlock(double)

Initializes a new instance of the VisioForge.Core.MediaBlocks.VideoProcessing.PinchBlock class with the specified pinch intensity.

public PinchBlock(double intensity = 0.5)

Parameters

intensity double

The pinch intensity (-1.0 to 1.0, default: 0.5).

Properties

Input

Gets the input.

public override MediaBlockPad Input { get; }

Property Value

MediaBlockPad

Inputs

Gets the inputs.

public override MediaBlockPad[] Inputs { get; }

Property Value

MediaBlockPad[]

Intensity

Gets or sets the pinch intensity value. Positive values create a bulge effect (pushing pixels outward), negative values create a pinch effect (pulling pixels inward). Range typically from -1.0 to 1.0, with 0.0 being no effect.

public double Intensity { get; set; }

Property Value

double

Output

Gets the output.

public override MediaBlockPad Output { get; }

Property Value

MediaBlockPad

Outputs

Gets the outputs.

public override MediaBlockPad[] Outputs { get; }

Property Value

MediaBlockPad[]

Type

Gets the type.

public override MediaBlockType Type { get; }

Property Value

MediaBlockType

Methods

Build()

Constructs and initializes the pinch filter and its associated GStreamer elements. This method creates the filter with the specified intensity, establishes input and output pads, and prepares the block for applying radial pinch or bulge distortion effects.

public override bool Build()

Returns

bool

true if the filter was successfully built and configured; false if initialization failed.

CleanUp()

Releases all resources and performs cleanup operations for this pinch effect block. This method disposes of the GStreamer elements and resets the build state.

public void CleanUp()

Dispose(bool)

Releases unmanaged and - optionally - managed resources.

protected override void Dispose(bool disposing)

Parameters

disposing bool

true to release both managed and unmanaged resources; false to release only unmanaged resources.

GetCore()

Gets the core BaseElement wrapper that provides additional functionality around the GStreamer pinch filter element.

public BaseElement GetCore()

Returns

BaseElement

The BaseElement wrapper instance that encapsulates the GStreamer pinch filter.

GetElement()

Gets the underlying GStreamer element that performs the pinch distortion.

public Element GetElement()

Returns

Element

The GStreamer Element instance representing the pinch filter.

IsAvailable()

Determines whether this media block is available. Correct NuGet SDK redist should be included into your project.

public static bool IsAvailable()

Returns

bool

true if this media block is available; otherwise, false.

IMediaBlockInternals.SetContext(MediaBlocksPipeline)

Associates this pinch effect block with a pipeline and initializes its internal context. This method is called internally when the block is added to a pipeline.

void IMediaBlockInternals.SetContext(MediaBlocksPipeline pipeline)

Parameters

pipeline MediaBlocksPipeline

The MediaBlocksPipeline instance that will manage this block.

See Also