[osg-users] Visualization of billboards depending on pre-conditions

[Hartwig Wiesmann]

Hi,

I would like to show a complete billboard when a certain part of the billboard is visible. Although other parts may be (partially) hidden by other items.

Example: assume that the billboard is a sign consisting out of a foot, pole and the sign itself. Whenever the foot is visible (depth test passes for the whole foot) I would like to show the complete sign. Even if the depth test for the sign fails for certain parts of the sign (but not for the foot).

Does anybody have any ideas how to set up such a test and following visualisation efficiently?

Thank you!

Cheers,
Hartwig

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