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A Little Offset When Rendering Curved Surfaces


Mike Allen

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So this may be elementary to a lot of you, but I'm hoping it may make someone say "AHA!"

 

If you have two curved surfaces that are supposed to be touching in the real world, but they don't seem to render right, a small offset for the sake of the rendering can really be beneficial.

 

Here's a rendering of a glass of wine, with both the glass and wine made from spin shapes. The cross section of the wine was created from a projected edge of the inside of the glass (I made a copy of the glass & then split it in the middle.)

wine_bad.jpg

 

Then, I edited the cross section of the wine and offset the curved edge by .01.

wine_cross_section.gif

 

This small change removed the interference problem caused by the facets of the two objects & vastly improved the quality of the rendering.

wine_good.jpg

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