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Help with pinching on curves.

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  • Ok so I upped the polygon count and tried to match my topology as close to your last example as I could @Rectro.  I've tried recreating this many times and I'm still getting pinching somewhere no matter what.  I'm quite baffled at how you were able to do it.

    Pinching6.PNG

    Pinching7.PNG

    Pinching2.c4d

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    Have a look at this, is this ok?  I did some very minor tweaking.  You have to take into account the poles, they cause issues on curved surfaces.  The way to almost eradicate them is to make sure the vert next to it have the same Y vertex position.  Pols either sink down or rise up above the position of the verts around it, this causes issues, although can be minor.

     

    https://www.dropbox.com/s/si6qx86ljy2d32s/Pinching2.1.c4d?dl=0

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  • Thank you! I'll compare this to mine tomorrow.

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  • Took me a bit longer to get back to this than I had hoped for... I think I've got things to a point that are alright for me, but I'm still finding these kind of features very awkward to go about making.

     

    Is this what you mean by next to each other for the vertices @Rectro ?  Thanks again for all the help on this one :compChat:

     

    Pinching8.thumb.PNG.fcc72af50deb346fc5cf483d25b7e710.PNG

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    Poles Issues

     

    The worse place for a pole is on a curved surface.  On planar surfaces you wont see any pinching caused by Pols because the pole is on the same plane as the adjacent verts.  To minimize the pole issues at render time all verts that are adjacent to the pole as much a possible should be closer to being on the same plane as the poles normal.  The verts adjacent to the pole are on the same Y Axis, so the pole is neither concaved or convexed.

     

    rN14HDa.png

     

    Creasing

     

    The closer edges are to each other the more of a tighter edge will show at render time. Selecting the verts as in the image below and using the Iron modeling tool you're see how it's trying to relax and evenly distribute the verts.  The further they are from each other the less of a crease your see because the connect edges being a component of a polygon are moved further away from each other.  Also is the case of evenly distributed distance will yield a smoother look.  Essentially what your trying to do is get the crease to fade out so you need to move the verts where the crease is an issue away from each other.

     

    As you can see in the image below, the bottom example shows nasty creases.  The edges are closer to each other and are closer to the pole which will increase the chances of the pole also adding to the issue if its even slightly concaved or convexed.

     

    kxAt1qr.png

     

     

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    Any reason we're leaving the 'e' off the word 'Pole' ? Normally I wouldn't correct anyone's spelling, but when it's the main thing we're talking about...

     

    CBR

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