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alin_edric · Joined: 06 Oct 2008 Posts: 3

Hi,

I need to determine wich object are visible in a pdf page. for example I can have 2 images in the same location. how can i know wich one is visible ? and which one is hidden?

thank you.

alin iacob

Thomas Hoevel · Joined: 16 Oct 2006 Posts: 387 Location: Cologne, Germany

Hi!

I don't know.
But since every pixel can have it's own opacity it's even possible that both images are visible - even at the same place.
So with transparency this is really difficult.

Without transparency, you should be able to solve this by comparing the rectangles of the pictures.
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Regards
Thomas Hoevel
PDFsharp Team