Problem with Flat Surfaces - Polyloop

Robertb · 16th January 2007, 14:01

Hi All

What is the best way to construction flat panels which have bevel edges. From my screen shot you can see a simple example, but you'll notice that the reflection in the flat side is wrong.

I have tried various way of building this and used the various triangulation tools but I always end up with similar problems.

In my previous modeller (nurbs base), it was something that you didn't worry about!

Any help would be appreciated

Robert

Patrick210 · 16th January 2007, 15:36

The problem is you have started with one big n-gon ( a facet with more than 4 sides ). You should create your initial shape using only tris or quads. n-gons do not render properly, which is what you are seeing even in the openGL preview. This is a simple shape and there are various ways to go about starting it.

Robertb · 16th January 2007, 16:12

Thank you for the advice.

I have had another go with this examble and I am getting a better surface. There are still reflections issues where the triangles are long and thin but it is better.

The problem is that it all seems to be a lot effort to get a simple extrude surface. Something that has been the basic building block for me in 3d for the last ten years! I guess it just me trying to get my head around this new way of modelling with sub-division.

Cheers

Robert

Patrick210 · 16th January 2007, 18:31

You need to think in simpler terms with this. Try to make the shapes with less complication. Here's how I would approach this.

Robertb · 17th January 2007, 13:18

Hi

Thanks again for the advice.

I guess I just need more practice - funny enough it is the simple things in Sub Divison modelling that give me the biggest headaches. I guess I have never had to think about how best to trangulate a shape before - it was always done for me!

Cheers

Robert

16th January 2007, 14:01	#1 (permalink)
Robertb Vertex Join Date: May 2006 Location: London, England Posts: 18	Problem with Flat Surfaces Hi All What is the best way to construction flat panels which have bevel edges. From my screen shot you can see a simple example, but you'll notice that the reflection in the flat side is wrong. I have tried various way of building this and used the various triangulation tools but I always end up with similar problems. In my previous modeller (nurbs base), it was something that you didn't worry about! Any help would be appreciated Robert Attached Thumbnails

16th January 2007, 16:12	#3 (permalink)
Robertb Vertex Join Date: May 2006 Location: London, England Posts: 18	Thank you for the advice. I have had another go with this examble and I am getting a better surface. There are still reflections issues where the triangles are long and thin but it is better. The problem is that it all seems to be a lot effort to get a simple extrude surface. Something that has been the basic building block for me in 3d for the last ten years! I guess it just me trying to get my head around this new way of modelling with sub-division. Cheers Robert Attached Thumbnails

16th January 2007, 18:31	#4 (permalink)
Patrick210 Pixar want to hire me! Join Date: Apr 2004 Location: Florida, USA Posts: 549	You need to think in simpler terms with this. Try to make the shapes with less complication. Here's how I would approach this. Attached Thumbnails

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16th January 2007, 15:36	#2 (permalink)
Patrick210 Pixar want to hire me! Join Date: Apr 2004 Location: Florida, USA Posts: 549	The problem is you have started with one big n-gon ( a facet with more than 4 sides ). You should create your initial shape using only tris or quads. n-gons do not render properly, which is what you are seeing even in the openGL preview. This is a simple shape and there are various ways to go about starting it.

17th January 2007, 13:18	#5 (permalink)
Robertb Vertex Join Date: May 2006 Location: London, England Posts: 18	Hi Thanks again for the advice. I guess I just need more practice - funny enough it is the simple things in Sub Divison modelling that give me the biggest headaches. I guess I have never had to think about how best to trangulate a shape before - it was always done for me! Cheers Robert