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Topic: Defloating objects
posted by Flipside
archived on 22.5.2003
In interiors renderings I get the object like floating on the floor in indirect illumination side of the room!!
Follow-ups
A: Lower the color an nrm tresholds to get more detailed irradiance map. But also make sure your object has a fillet or something, so that it is possible for a shadow to cast underneath the fillet. If you would place a cube exactly on a groundplane, it will also look more like flaoting than when you fillet the cubes edges.
image 1: direct light only
left block is lifted a bit above the groundplane, block middle is lined up with the groundplane and block right is also aligned, but filetted.
See for yourself which one is floating the most:
image2: same blocks, GI skylight only, low settings
now they all float...
image3: same blocks, GI skylight with good settings for irradiance map (-3,0 - clr=0.3, nrm=0.3)
judge again which one floats the most:
This doesn't mean vray can't render shadows ok on non filetted blocks, this is just a real life fact. No object is perfectly a cube, has perfect sharp edges and no object can lie on the ground perfectly (read no two objects can have a surface in the exact same location) This is why in real life there is always a very thin border of shadow visible. So it has nothing to do with vray.
hope this helps
flipside
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