Class ZonePlatePixelSource

A sample IPixelSource implementation. Creates a test pattern that resembles an inverted Fresnel zone plate.

Inheritance
System.Object
ZonePlatePixelSource
Implements
Namespace: PhotoSauce.MagicScaler
Assembly: PhotoSauce.MagicScaler.dll
Syntax
public sealed class ZonePlatePixelSource : Object, IPixelSource
Remarks

This pixel source produces a complex pattern that is useful for detecting subtle errors in processing. It is minimally optimized in order to emulate an expensive decoder.

Constructors

ZonePlatePixelSource(Int32, Int32, Guid, Double)

Constructs a new ZonePlatePixelSource using the specified settings.

Declaration
public ZonePlatePixelSource(int width, int height, Guid pixelFormat, double scale = 1)
Parameters
Type Name Description
System.Int32 width

The image width in pixels. This value should be odd to allow the pattern to be perfectly centered.
System.Int32 height

The image height in pixels. This value should be odd to allow the pattern to be perfectly centered.
System.Guid pixelFormat

The pixel format of the image. Must be a member of PixelFormats.
System.Double scale

Determines the diameter of the pattern. A value of 1.0 scales the pattern to fill to the edges of the image's smaller dimension.
Remarks

width and height values up to 65535 are allowed, although not all encoders support imgages of that size.

Properties

Format

The binary representation of the pixel data. Must be one of the values from PixelFormats.

Declaration
public Guid Format { get; }
Property Value
Type Description
System.Guid

Height

The height of the image in pixels

Declaration
public int Height { get; }
Property Value
Type Description
System.Int32

Width

The width of the image in pixels

Declaration
public int Width { get; }
Property Value
Type Description
System.Int32

Methods

CopyPixels(Rectangle, Int32, Span<Byte>)

Copies the image pixels bounded by sourceArea to the provided buffer.

Declaration
public void CopyPixels(Rectangle sourceArea, int cbStride, Span<byte> buffer)
Parameters
Type Name Description
System.Drawing.Rectangle sourceArea

A System.Drawing.Rectangle that bounds the area of interest.
System.Int32 cbStride

The number of bytes between pixels in the same image column within the buffer.
System.Span<System.Byte> buffer

A target memory buffer that will receive the pixel data.

ToString()

Returns a string that represents the current object.

Declaration
public override string ToString()
Returns
Type Description
System.String

A string that represents the current object.

Implements