I'm not sure, but i think you can't control the way to stretch. You can control the way to merge with pre-existent image, by TCanvas.CopyMode.
Maybe you can do what you want by using Graphics32 libray [i knew about it some days ago, but i saw it's very popular]. There are many way to interpolate for stretching [TBitmap32.StretchFilter]. http://graphics32.org/wiki7 ----- Original Message ----- From: "quickjoe2005" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Saturday, April 16, 2005 3:12 PM Subject: [delphi-en] Re: Draw transparent image > > > Hello, > > I am sorry I didn't make myself clearer. I am > trying to do something like this: > > var > R: TRect; > begin > DstImg.Canvas.StretchDraw(R, SrcImg) > ... > end; > > SrcImg has a transparent color and R is chosen > such that it is *not* the same as the dimensions > of SrcImg. What seems to happen is that behind > the scene, pixels are sampled and the colors > (including the transparent color) are averaged > such that the contours of the image seem > "tainted" with the transparent color. > > Note that when R equals the dimensions of the > source image, there is no smudging effect. > > Maybe it is not possible to get rid of this? > Did I forget something? > > Thanks anyway. > > Eric > > --- In [email protected], "Mauro Russo" <[EMAIL PROTECTED]> wrote: > > Check TImage.Transparent [<=> TImage.Picture.Bitmap.Transparent], > > TBitmap.TransparentColor > > TBitmap.TransparentMode. > > > > Really, i didn't understand what do you mean > > by smudging the result. > > > > ----- Original Message ----- > > From: "quickjoe2005" <[EMAIL PROTECTED]> > > To: <[email protected]> > > Sent: Saturday, April 16, 2005 10:21 AM > > Subject: [delphi-en] Re: Draw transparent image > > > > > > > > > > > > > Hello, > > > > > > Does anyone know how to draw a transparent > > > image on the canvas of another one after > > > reducing its size without smudging the > > > result with the transparent color? > > > > > > Thanks > > > > > > Eric L > > > > > > > > ----------------------------------------------------- > Home page: http://groups.yahoo.com/group/delphi-en/ > To unsubscribe: [EMAIL PROTECTED] > Yahoo! Groups Links > > > > > > > > ----------------------------------------------------- Home page: http://groups.yahoo.com/group/delphi-en/ To unsubscribe: [EMAIL PROTECTED] Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/delphi-en/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
