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Re: mosaic two images in direct graphics [message #44371 is a reply to message #44370]

Thu, 09 June 2005 13:13

Sebastian
Messages: 5
Registered: June 2005

Junior Member

Thanks for your reply. I don't have access to the book. My problem is to
draw the images, but not to draw a specific color (black in my case). The
images are generated using MAP_PATCH (there is no other way, like
MAP_IMAGE, which would leed to a mask -- AFAIK), so there is plenty of
black surrounding the orbit strips of the satellite.

The only application of the Z buffer that i can imagine in this case would
be to draw the images in Z buffer, read them back in an array of images
(or a structure), and then add and scale them before displaying again.
This would lead to some kind of transparency (but would even "merge" the
overlapping images together). Isn't there a more direct way just for not
drawing black?

Any help is greatly appreciated.
sebastian

On Thu, 9 Jun 2005, Chi-Kuei Wang wrote:

> It seems to me that you need to draw in Z buffer (in order to use
> transparency) and copy the resultant image to the display window. If you have
> a hold of David Fanning's book, there is a similar example to follow.

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[Message index]

		Re: mosaic two images in direct graphics By: Chris Lee on Fri, 10 June 2005 06:28
		Re: mosaic two images in direct graphics By: Sebastian on Fri, 10 June 2005 05:35
		Re: mosaic two images in direct graphics By: David Fanning on Thu, 09 June 2005 13:35
		Re: mosaic two images in direct graphics By: Sebastian on Thu, 09 June 2005 13:13
		Re: mosaic two images in direct graphics By: Chi-Kuei Wang on Thu, 09 June 2005 09:15
		Re: mosaic two images in direct graphics By: Sebastian on Mon, 13 June 2005 09:16

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