LEGO Elements/Parts : 5973


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Subject:	Re: Overlapping primitives - a reason to Hold a part?
Newsgroups:	lugnet.cad.dat.parts
Date:	Sun, 16 Jul 2006 10:59:02 GMT
Viewed:	3008 times

In lugnet.cad.dat.parts, Travis Cobbs wrote:

In lugnet.cad.dat.parts, William Howard wrote:

What is the policy on overlapping primitives in a part? Is it OK? Is it frowned upon? Is it accepted as the norm? Is it only accepted under exceptional circumstances? It excessive over-lapping of primitives (or quads/tris) a reason to Hold a part? Is any over-lapping (beyond the exceptional) a reason to Hold the part?

I don’t know what the policy is (or if there is one), but I will point out that it will likely cause artifacts in any transparent parts in any viewer that supports blended transparency (such as LDView). The overlapping sections will get drawn twice, making them a noticeably different shade.

Here’s an example of a quad overlapping a disc drawn in transparent gray:

--Travis

Ahhh. Very good point. I think you’d get problems in povray too.

Tim

Message has 2 Replies:

		Re: Overlapping primitives - a reason to Hold a part?
(...) If you post a hold vote for all parts contain a overlaping between a primitive and a quad or triangle, you must post a hold vote for all parts with contain a stud (ex : all brick !!!). Because all studs are overlaping with quad or box. It is (...) (18 years ago, 16-Jul-06, to lugnet.cad.dat.parts, FTX)

		Re: Overlapping primitives - a reason to Hold a part?
(...) Actually, I believe it will look fine in POV-Ray (although I could be wrong). --Travis (18 years ago, 17-Jul-06, to lugnet.cad.dat.parts, FTX)

Message is in Reply To:

		Re: Overlapping primitives - a reason to Hold a part?
(...) I don't know what the policy is (or if there is one), but I will point out that it will likely cause artifacts in any transparent parts in any viewer that supports blended transparency (such as LDView). The overlapping sections will get drawn (...) (18 years ago, 16-Jul-06, to lugnet.cad.dat.parts, FTX)

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