TIESlippyMap.Render

Declaration

procedure TIESlippyMap.Render(Container: TIEBitmap; DestWidth: integer; DestHeight: integer; DestScanlines: PPointerArray; DestX1, DestY1, DestX2, DestY2: integer; SrcCols, SrcRows: PInteger; Transparency: integer; RenderOperation: TIERenderOperation; Opacity: double);

Description

Implements the Render method of TIEVirtualBitmapProvider abstract parent class.
Applications should not use this method.

Opacity vs Transparency
Both the Opacity and Transparency parameters provide the same functionality. Transparency is the traditional ImageEn value, whereas Opacity provides easier PSD compatibility.
While they can be used in combination, generally only one will be used, i.e. leave Opacity=1 and make use of transparency, or alternatively, leave Transparency=255 and make use of Opacity. For example, for 50% opacity: Transparency = 255 and Opacity = 0.5, or Transparency = 128 and Opacity = 1.0

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