You'll have to adjust for the shift from the camera center. Instead of using the camera-to-object distance as your multiplier, you should use (I haven't tried it, so hopefully the math is right):
(cosine alpha) * (distance camera-to-object) alpha is the angle between your "camera-to-object-vector" and your "camera-to-camerainterest-vector" On Wed, Sep 4, 2013 at 5:25 PM, Ponthieux, Joseph G. (LARC-E1A)[LITES] < j.ponthi...@nasa.gov> wrote: > Hello,**** > > ** ** > > I have a situation where I would like an object to remain the same size > relative to the camera. Think in terms of “pixel width” for example. I > managed to accomplish this through ICE by using the distance between the > camera and the object to manage the scale for the object. **** > > ** ** > > The problem is this. If the object is in the center of the viewport and I > move the camera towards or away from the object, its perfect. The scale > remains constant relative to the viewport. But if the object is on the > periphery of the viewport, it is slightly larger than in the center of the > viewport. The object scale still remains relative if the camera moves, the > problem is that the scale is different than in the center. I assume this > has something to do with forced perspective having an affect on the scaling? > **** > > ** ** > > Has anyone tried this before? I haven’t a clue how to correct this at the > moment. Any ideas would be appreciated.**** > > ** ** > > --**** > > Joey Ponthieux**** > > LaRC Information Technology Enhanced Services (LITES)**** > > Mymic Technical Services**** > > NASA Langley Research Center**** > > __________________________________________________**** > > Opinions stated here-in are strictly those of the author and do not **** > > represent the opinions of NASA or any other party.**** > > ** ** >
