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How must Alpha be managed ?? [message #38508]

Fri, 21 December 2012 00:16

Didier is currently offline

Didier
Messages: 726
Registered: November 2008
Location: France

Contributor

Hi all,

I am currently trying to draw buttons that are transparent but they have special shapes.

For rectangles: it is easy, all I have to do is draw a small img in iml designer, set the RGBA values for all points and then use this image to draw in the dest rectangle.

For other shapes (circles for ex), I try to use ImageDraw and Alpha() method and it works ...

Question:
In the iml designer: all points are set to : RGBA(46,46,46,51)
Using Image Draw, I draw a circle with Color(46,46,46) and apply GreyColor(51)
... expecting to get RGBA(46,46,46,51)
But the result is not the same at all !! Sad

Sad

Which is the way to go ?? (the color obtained with src image gives me the result expected by client )

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[Message index]

		How must Alpha be managed ?? By: Didier on Fri, 21 December 2012 00:16
		Re: How must Alpha be managed ?? By: forlano on Fri, 21 December 2012 09:49
		Re: How must Alpha be managed ?? By: omari on Fri, 21 December 2012 10:31
		Re: How must Alpha be managed ?? By: Didier on Fri, 21 December 2012 14:47
		Re: How must Alpha be managed ?? By: Didier on Fri, 21 December 2012 16:24
		Re: How must Alpha be managed ?? By: omari on Fri, 21 December 2012 21:53
		Re: How must Alpha be managed ?? By: Didier on Fri, 21 December 2012 22:31
		Re: How must Alpha be managed ?? By: mirek on Sun, 23 December 2012 10:03
		Re: How must Alpha be managed ?? By: Didier on Sun, 23 December 2012 13:10
		Re: How must Alpha be managed ?? By: mirek on Sun, 23 December 2012 13:27
		Re: How must Alpha be managed ?? By: Didier on Sun, 23 December 2012 21:20

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