3D prospective question
Blitz3D Forums/Blitz3D Beginners Area/3D prospective question
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| I have been trying to find the answer to this question for some time. If an object appears to be 1 meter wide at say 1 meter away, how far away would it have to be to appear 1/2 meter wide. Or 1/4 meter wide. At what rate does an object appear smaller as it moves farther away from the camera. I hope you understand my question. I need to know this so I can calculate the ideal distance from the camera a mesh can be used with half the poly count. And then 1/4 the poly count, etc.. |
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| I'm pretty sure that if you double the distance, you halve the size. So at 2 meters, it would be 1/2 meter wide, and at 4 meters, it would be 1/4 meter wide. In other words, size = 1 / distance, or in this case, distance = 1 / size. And it's perspective, not propsective. :-) |
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| It depends what FOV you have etc, so there is NO hard rules about LOD sizing... try FOV=1 deg and object is pretty much the same sized no matter how far it is. :) |
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| Thanks sswift. That seems to be the scale used by blitz3D too. From measureing objects on screen at different units away that's what I get. |
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