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Michael Goldshteyn

Question about modeling cylinder caps

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I just saw a technique for converting the triangles of a  cylindrical caps to quads that I hadn't seen before. Specifically, the modeler used the technique pointed to by the red arrow in the image below to convert the central triangles into quads. He basically created a zig-zag starburst pattern, which cut the number of radial edges in half and created quads as a result.

quads-center.png

Usually, I see people creating quads by just removing every other edge from the radial edges that go to the central pole. The image above could be converted to this form by taking those points around the central point that are closest to it and pushing them away from the center until they are the same distance as the next farthest set of radial points, producing something along the lines of the image shown below.

quads-center-conventional.png

What are the pros and cons of these two modeling approaches with respect to each other - a starburst like pattern as in the top image vs a more conventional circular arrangement as shown in the bottom one.


 

 

 

 

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First of all the top of this cylinder is flat - fully planar, so it doesn't matter if there are triangles or complex poles, even under subdivision.

 

There is no functional difference between the 2 quad options you have shown - they are all kite quads at the centre, and either is an equally acceptable solution for quads on a planar surface.

 

However, both of these ways are rubbish under subdivision on a curved surface - in that case neither will do because you can't be having the complex pole that remains at the very centre, which will result in artefacting during render. In that case then this is the answer for quad solving - it can cope with curving in any direction, and has not a single complex pole anywhere ...

 

image.thumb.png.58e39c122922bacbdd29b24f023ca001.png

 

CBR

 

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Yea to be honest I wouldn't use either of the techniques you provided examples of above flat surface or not, mainly because they're ugly:) one would prefer a nice quad patch like the example @Cerbera provided:D

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Why doesnt C4D come with a quad capped cylinder as standard? This would be a monumental upgrade.

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1 hour ago, Freemorpheme said:

Why doesnt C4D come with a quad capped cylinder as standard? This would be a monumental upgrade.

Yes that would be nice, although it should have options for both standard and quad caps, as both are useful in certain contexts.

In the meantime we do find that gap in the toolset admirably covered by the HB Modelling bundle, which anyone serious about modelling in Cinema almost certainly will have...

 

CBR

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