Having a negative viewing plane doesn't really make sense, the viewing plane is representing your eyes essentially, a negative viewing plane would mean you are seeing things that are behind you at the same time as things that are infront of you; straight lines passing through z = 0 would not look like lines anymore; as things approach z = 0 the perspective transform moves things to infinity.
When you have things that are partially behind the camera, you have to clip the geometry to only render things that are infront of the camera plane
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#3luca-deltodesco
Posted 15 November 2012 - 05:55 AM
Having a negative viewing plane doesn't really make sense, the viewing plane is representing your eyes essentially, a negative viewing plane would mean you are seeing things that are behind you at the same time as things that are infront of you; straight lines passing through z = 0 would not look like lines anymore; as things approach z = 0 the perspective transform moves things to infinity.
When you have things that are partially behind the camera, you have to clip the geometry to only render things that are infront of the camera plane
When you have things that are partially behind the camera, you have to clip the geometry to only render things that are infront of the camera plane
#2luca-deltodesco
Posted 15 November 2012 - 05:55 AM
Having a negative viewing plane doesn't really make sense, the viewing plane is representing your eyes essentially, a negative viewing plane would mean you are seeing things that are behind you at the same time as things that are infront of you; straight lines passing through z = 0 would not look like lines anymore; as things approach z = 0 the perspective transform moves things to infinity.
When you have things that are partially behind the camera, you have to clip the geometry to only render things that are infront of the camera plane
When you have things that are partially behind the camera, you have to clip the geometry to only render things that are infront of the camera plane
#1luca-deltodesco
Posted 15 November 2012 - 05:54 AM
Having a negative viewing plane doesn't really make sense, the viewing plane is representing your eyes essentially, a negative viewing plane would mean you are seeing things that are behind you at the same time as things that are infront of you; straight lines passing through z = 0 would not look like lines anymore; as things approach z = 0 the perspective transform moves things to infinity