P A U L Posted March 24, 2014 Report Share Posted March 24, 2014 Does anyone know the formula to convert omega and phi angles to an xyz coordinate? or to vector normal? Link to comment Share on other sites More sharing options...
cdschroer Posted March 24, 2014 Report Share Posted March 24, 2014 Paul - I moved this out of the "announcements" forum, because that is the only moderated forum here, and is really for announcements rather than questions. I admit your question doesn't neatly fit in the other categories. I'm not sure what you are asking. omega and phi angles from what type of data? If it's useful there is a detailed description of the surface normals and how they are represented in this post: http://forums.culturalheritageimaging.org/index.php?/topic/302-geeky-details-about-the-normals-visualization-available-in-the-new-viewer/ The normals for RTI files are calculated from a set of input images with light positions using a couple of different available algorithms. I'm pretty sure that's not what you want to know, but maybe you could elaborate a bit. Carla Link to comment Share on other sites More sharing options...
Taylor Posted May 9, 2014 Report Share Posted May 9, 2014 I think you're asking how to convert from spherical to cartesian coordinates and unit vectors--sorry this didn't occur to me sooner: http://mathworld.wolfram.com/SphericalCoordinates.html Link to comment Share on other sites More sharing options...
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