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Old 11th January 2021, 12:00 PM   #1
Emanmaker
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Default Straighten the vertices

Hello.

This is my first time being here and thank you letting me join. I've been using AC3D for skinning sim aircraft and building railroad models.
I've started modeling a coal carrier and discovered the vertices are not straight with each other and are causing "webbing" on opposite ends of the car. It's been driving me a bit numb. Is there a tool or function I need to use or what might be causing this?
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Old 11th January 2021, 02:44 PM   #2
Andy
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Default Re: Straighten the vertices

It's difficult to tell what you need. You could try selecting those surfaces and using menu Surface->flatten?


If that's no good, you can attach the model to a message.
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Old 11th January 2021, 06:50 PM   #3
Emanmaker
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Default Re: Straighten the vertices

I'll explain it in another way: I'm building models for the model train simulator, "Rule the Rail!" The software requires the model to be inverted to align it in the environment. So before I invert the project, my model is straight and narrow like this....



However when I invert the model in while in AC3D, the vertices on each end of the model distort and "web" out like this....



I did try surface>flatten and no effect is there something else, or would someone take a look at what I'm missing or not hitting....?

Last edited by Emanmaker; 11th January 2021 at 07:19 PM.
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Old 12th January 2021, 07:20 AM   #4
Andy
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Default Re: Straighten the vertices

I'm not sure what you mean by "inverting" but if you are getting black parts of the surfaces, it could be that the normals are being calculated wrong. This is usually caused by a concave polygon starting with the wrong orientation. You may have vertices overlapping (in the same place) within a polygon. Try running Object->Optimize vertices.



Try triangulating the problem surfaces. Or you could use Surface->change-vertex-order to try and remove the black parts.


Also, check all the normals are facing outwards (press 'n'). A quick way to test this is to set the surfaces to 1-sided and if anything is not visible from the outside, those surfaces need flipping.
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Old 30th January 2021, 08:17 AM   #5
Emanmaker
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Default Re: Straighten the vertices

Well, I got the black shades out off the rail car here in "Rule the Rail" and everything is progressing....I'll clean up the objects that are not supposed to be visible. What I'm trying to figure out how to get rid of this "overhang" I got here on the green sides of the car.... Is this a vertex issue, or a texture issue?

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Old 30th January 2021, 12:10 PM   #6
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Default Re: Straighten the vertices

I'm not exactly sure which area you mean (can you supply a zoomed in image on the problem?) but the left truck needs the texture flipping left to right.
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Old 31st January 2021, 04:05 AM   #7
Emanmaker
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Default Re: Straighten the vertices

I'm talking about here with the shade....
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Old 31st January 2021, 07:24 AM   #8
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Default Re: Straighten the vertices

You may have an extra vertex or surface in there, or perhaps a convex polygon.


Try Object->Optimize-vertices. Have a look at that area an see if you can see any extra vertices. Triangulating that surface may help.
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Old 2nd February 2021, 04:07 AM   #9
Emanmaker
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Default Re: Straighten the vertices

Triangulating- That did the trick....Thanks Andy for your help....

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