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 colors for this image.

  PaletteSize: PtrUInt;

PaletteSize - pointer to the size of the palette.

  procedure Init;

Init - initiator for the object. Don't use a constructor 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 the data.

  procedure ExtractRect();

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

  function GetLineStart();

Gets a pointer to the byte position at the beginning of the specified scanline.

  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 Red, Green, Blue and Alpha channel values at a given position in pixel data.

  procedure ReadMask();

Reads the Mask value at the given position in the image data.

  procedure WriteBits();

Writes ABits into Data at the given position.

  procedure WriteChannels();

WriteChannels - writes the specified channel values at the nominated position.

  procedure WriteMask();

Writes the mask for the raw image when assigned and given a valid bit depth in the image description.

  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).