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Posted by Geoff Berrow on 01/18/07 14:06
Message-ID: <24f31$45af66b5$8259c69c$13052@news2.tudelft.nl> from Rik
contained the following:
>> Images are rectangular. To copy a polygon, you are only copying part
>> of the image. Lets say you have a black triangle on a white
>> background. The process would be something like:
>>
>> look at the first pixel of the source image.
>> if the pixel is white, move on to the next pixel
>> if the pixel is black, change the corresponding pixel in the
>> destination image to black
>> Move on to the next pixel
>>
>> Using a couple of loops you can selectively blend part of an image.
>
>Is it not simpler to make the backgroundcolor of the image that has to be
>pasted in transparant? Seems a lot less work....
It would be if that works. Never used the imagecopymerge function
--
Geoff Berrow 0110001001101100010000000110
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