Class TGrayscaleAlphaFloatImage

Unit

CastleImages

Declaration

type TGrayscaleAlphaFloatImage = class(TCastleImage)

Description

Image with each pixel represented as 2 floating-point numbers (Single): grayscale (luminance) and alpha (opacity).

Compared to TGrayscaleAlphaImage, each pixel is a floating-point number, which means it is more precise and can also be above 1.0 value.

Hierarchy

• TObject
• TEncodedImage
• TCastleImage
• TGrayscaleAlphaFloatImage

Overview

Methods

	function GetColors(const X, Y, Z: Integer): TCastleColor; override;
	procedure SetColors(const X, Y, Z: Integer; const C: TCastleColor); override;
	class function PixelSize: Cardinal; override;
	class function ColorComponentsCount: Cardinal; override;
	procedure Assign(const Source: TCastleImage); override;
	procedure InvertColors; override;
	class procedure MixColors(const OutputColor: Pointer; const Weights: TVector4; const AColors: TVector4Pointer); override;
	function PixelPtr(const X, Y: Cardinal; const Z: Cardinal = 0): PVector2;
	function RowPtr(const Y: Cardinal; const Z: Cardinal = 0): PVector2Array;

Properties

	property Pixels: PVector2 read GetPixels;
	property PixelsArray: PVector2Array read GetPixelsArray;

Description

Methods

	function GetColors(const X, Y, Z: Integer): TCastleColor; override;

	procedure SetColors(const X, Y, Z: Integer; const C: TCastleColor); override;

	class function PixelSize: Cardinal; override;

	class function ColorComponentsCount: Cardinal; override;

	procedure Assign(const Source: TCastleImage); override;

	procedure InvertColors; override;

	class procedure MixColors(const OutputColor: Pointer; const Weights: TVector4; const AColors: TVector4Pointer); override;

	function PixelPtr(const X, Y: Cardinal; const Z: Cardinal = 0): PVector2;
Pointer to given pixel.

	function RowPtr(const Y: Cardinal; const Z: Cardinal = 0): PVector2Array;
Pointer to given row.

Properties

	property Pixels: PVector2 read GetPixels;
Pointer to pixels. Same as RawPixels, only typecasted to PVector2.

	property PixelsArray: PVector2Array read GetPixelsArray;
Pointer to pixels. Same as RawPixels, only typecasted to PVector2Array.

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