Wow...
Hmmm.
I guess it would need an
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image for the x-ray part, combining the mask and the x-rayed image.
The mask being 2 times the size of the image, full black, with a circle at full transparency in the middle.
Relying on
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the x-rayed image is shown in pos 0,0, while the mask is positioned for its center to match the position of the mouse.
Then this ATL image is used in another ATL image, that would be the final result.
Once again relying on
parallel, showing the normal image, in pos 0,0. As for the first ATL, it should probably be
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ed, once again accordingly the the mouse position, then past through
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in order to put all black pixels at full transparency.
It's also possible to do this with a
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, following more or less the same principle.
Firstly build the x-rayed part by bliting the mask on the x-rayed image, then turning every black pixels at full transparency, and bliting the result on top of the normal image.
The second method is probably the most reliable and, paradoxically, the easiest to implement.
