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Unit BGRADithering

📄 Source code

Description
Uses
Structures
Functions and Procedures
Types
Constants
Variables

Description

Implements the dithering algorithms

Uses

Overview

Structures

Name Description
Class TDitheringTask Abstract dithering task
Class TDitheringToIndexedImage Handles dithering of an image
Class TFloydSteinbergDitheringTask Task for Floyd-Steinberg dithering
Class TNearestColorTask Task for trivial dithering consisting in finding the nearest color

Functions and Procedures

function CreateDitheringTask(AAlgorithm: TDitheringAlgorithm; ASource: IBGRAScanner; ADestination: TBGRACustomBitmap; ABounds: TRect): TDitheringTask; overload;
function CreateDitheringTask(AAlgorithm: TDitheringAlgorithm; ASource: IBGRAScanner; ADestination: TBGRACustomBitmap; APalette: TBGRACustomApproxPalette; AIgnoreAlpha: boolean; ABounds: TRect): TDitheringTask; overload;
function CreateDitheringTask(AAlgorithm: TDitheringAlgorithm; ABitmap: TBGRACustomBitmap; APalette: TBGRACustomApproxPalette; AIgnoreAlpha: boolean): TDitheringTask; overload;
function CreateDitheringTask(AAlgorithm: TDitheringAlgorithm; ABitmap: TBGRACustomBitmap; APalette: TBGRACustomApproxPalette; AIgnoreAlpha: boolean; ABounds: TRect): TDitheringTask; overload;
procedure DitheredFillRect(ABitmap: TBGRACustomBitmap; x, y, x2, y2: integer; texture: IBGRAScanner; mode: TDrawMode; AScanOffset: TPoint; ditheringAlgorithm: TDitheringAlgorithm);
function DitherImageTo16Bit(AAlgorithm: TDitheringAlgorithm; ABitmap: TBGRACustomBitmap): TBGRACustomBitmap;

Types

TOutputPixelProc = procedure(X,Y: Int32or64; AColorIndex: Int32or64; AColor: TBGRAPixel) of object;

Description

Functions and Procedures

function CreateDitheringTask(AAlgorithm: TDitheringAlgorithm; ASource: IBGRAScanner; ADestination: TBGRACustomBitmap; ABounds: TRect): TDitheringTask; overload;

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function CreateDitheringTask(AAlgorithm: TDitheringAlgorithm; ASource: IBGRAScanner; ADestination: TBGRACustomBitmap; APalette: TBGRACustomApproxPalette; AIgnoreAlpha: boolean; ABounds: TRect): TDitheringTask; overload;

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function CreateDitheringTask(AAlgorithm: TDitheringAlgorithm; ABitmap: TBGRACustomBitmap; APalette: TBGRACustomApproxPalette; AIgnoreAlpha: boolean): TDitheringTask; overload;

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function CreateDitheringTask(AAlgorithm: TDitheringAlgorithm; ABitmap: TBGRACustomBitmap; APalette: TBGRACustomApproxPalette; AIgnoreAlpha: boolean; ABounds: TRect): TDitheringTask; overload;

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procedure DitheredFillRect(ABitmap: TBGRACustomBitmap; x, y, x2, y2: integer; texture: IBGRAScanner; mode: TDrawMode; AScanOffset: TPoint; ditheringAlgorithm: TDitheringAlgorithm);

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function DitherImageTo16Bit(AAlgorithm: TDitheringAlgorithm; ABitmap: TBGRACustomBitmap): TBGRACustomBitmap;

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Types

TOutputPixelProc = procedure(X,Y: Int32or64; AColorIndex: Int32or64; AColor: TBGRAPixel) of object;

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