Well, I'm not sure which aspect of this to look into. The goal is to tie a glyph into the coordinate space of a transformed object (Rotated Sphere), with the stiff requirement thta the glyph not to be zoomed in when the object is zoomed. Is this possible ? Sounds like a screen object just plain won't work. Is it the characteristic of being a screen object which makes the glyph not zoomable ?
Greg once explained to me (correct me if I misremembered, Greg) that screen objects are treated as if they were objects right on the camera lens, so correct, you can't zoom them with the Camera; they are always at the same focal length. I also don't believe there's any way in the DX interface/net flow to convert an object to /from screen to "regular": you can only do this by importing a DX file that declares a screen object.
I take it you aren't using Glyph per se, but you've manufactured an object that's imported and realized by simply rendering it, right? I'd bypass Glyph since you can't get its internal scale value (an addition someone should add someday).
So if I were scaling up the Sphere, I could always translate the "glyph" to the origin, use an inverse scale, then retransform it to the surface of the Sphere (calculate the scaled distance vector). But if you are zooming the camera, the problem is trickier as we've said before.
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