On Jan 17, 2008, at 7:47 PM, C. Michael Neely wrote:
Is there a way to get screen coordinates from a billboard patch as opposed to simply seeing the local coordinates?
I'm not sure what you mean about getting coordinates from a billboard patch, but in order to convert from pixels to QC units you will need to use the Resolution port on the Rendering Destination Dimensions patch. The units on that port are (pixels/QC unit) so you can convert to and from pixels if you need to. The billboard itself only accepts the QC units, so if you use pixels a lot you may want to consider creating a Clip containing the billboard and conversion math.
Remember that since pixels are dependent on the composition's dimensions, you should probably construct your composition at the resolution you intend to display it at.
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