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By: Earl F. Glynn
Abstract: This article demonstrates how to merge a foreground and background image by fading from one image to the other, but only along a transition edge drawn with a simple drawing tool.
The Image Feathering Lab Report is part
Find this Lab Report mirrored on the Borland site:
or on the original site
Keywords: feathering, vignette, foreground image, background image, bitmap
tiling, BMP, JPG, GIF, TGIFImage, TPicture, JPG to BMP conversion, BMP to JPG
conversion, JPEG Quality, KeyPreview, rubber band line, MouseDown, MouseMove,
MouseUp, object translation, ClientToScreen, ScreenToClient, Simple Drawing
Tool, TList, TVectorGraphicsList, TVectorGraphicsNode, TRectangleNode,
TRoundRectangleNode, TEllipseNode, TDrawingTool, TDrawingHandle, object
"handles", RestrictCursorToDrawingArea, Windows.ClipCursor,
SquareContainsPoint, Windows.PtInRect, Marching Ants, LineDDA, TPenStyle,
TLogBrush, Geometric Pens, ExtCreatePen, PS_GEOMETRIC, PS_ENDCAP_SQUARE,
TCombBox, OnDrawItem, Scanline, TRGBTripleArray, blur, invert, Clipboard,
CF_BITMAP, Clipboard.HasFormat, TControlCanvas, cropping, flip, reverse, Delphi 5
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