TRawImage

type TRawImage = object

  Description: TRawImageDescription;

Description record for the Raw Image

  Data: PByte;

Data - a pointer to the actual data of the image

  DataSize: PtrUInt;

DataSize - pointer to the size of the image

  Mask: PByte;

Mask - pointer to the Mask for use with the image

  MaskSize: PtrUInt;

MaskSize - pointer to the size of the mask

  Palette: PByte;

Palette - pointer to the palette of colours for this image

  PaletteSize: PtrUInt;

PaletteSize - pointer to the size of the palette

  procedure Init;

Init - initiator for the object. Don't use a contructor here, it will break compatibility with a record

  procedure CreateData();

CreateData - method to create the data for the record

  procedure FreeData;

Destroys the allocated Data, Mask and Palette arrays.

  procedure ReleaseData;

ReleaseData - frees the resources when finished with th edata

  procedure ExtractRect();

ExtractRect - find the position of the bounding rectangle from the raw data

  procedure PerformEffect();

PerformEffect - applies a specified special effect to the data of the Raw Image

  function ReadBits();

ReadBits - reads the bit values for the raw image data at a given position

  procedure ReadChannels();

Reads the R, G, B and Alpha channel values at a given position in pixel data.

  procedure ReadMask();

Read the Mask value at the given position in the image data. Returns AMask=True if the pixel is transparent.

  procedure WriteBits();

Writes ABits into Data at the given position.

  procedure WriteChannels();

WriteChannels - writes the specified channel values at the nominated position

  procedure WriteMask();

  function IsMasked();

IsMasked - returns True if the specified pixels are masked

  function IsTransparent();

IsTransparent - returns True if the specified pixels are transparent

  function IsEqual();

IsEqual - returns True if the current and specified images are equal

end;

TRawImage

An uncompressed graphics image (bitmap)