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 Post subject: Displacement at Corners
PostPosted: Tue Jan 13, 2009 4:06 pm 

Joined: Thu Nov 13, 2008 2:52 am
Posts: 977
OK, so I'm working on some displacement brick textures. I've figured out that I need to subdivide my flat faces into a bunch of small squares for the displacement map to work properly. However, I'm having an issue now where the corners of the building are pulling apart from each other. What's the fix for this?

-Brodie


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 Post subject:
PostPosted: Wed Jan 14, 2009 1:56 pm 
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Joined: Mon Jan 10, 2005 11:53 am
Posts: 7607
Set polygon smoothing angle >=90 and Recalc. Turn on smoothing in displacement options. I hope that helps.

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 Post subject:
PostPosted: Wed Jan 21, 2009 9:07 pm 

Joined: Thu Nov 13, 2008 2:52 am
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cool, I'll give that a shot. Another displacement question. I've tried doing some displacement brick w/ horrible results. After doing some research I think I've found that you need to subdivide the surface into small squares. Is this correct? I don't suppose there's a way around this or anything as it takes awhile to subdivide a big wall w/ openings in it.

-Brodie


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 Post subject:
PostPosted: Wed Jan 21, 2009 11:42 pm 
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Joined: Wed Jan 26, 2005 8:30 pm
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Location: Uzbjeckiazutjenikitzistan
It's just better if the mesh is subdivided a bit instead of being one big polygon. If the mesh is subdivided a bit you can use a lower precision value for displacement and have faster render times.

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 Post subject: smoothing angle?
PostPosted: Thu Feb 12, 2009 6:55 pm 

Joined: Thu Nov 13, 2008 2:52 am
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Where do I set the Smoothing Angle?


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 Post subject:
PostPosted: Sat Feb 14, 2009 9:59 am 

Joined: Mon Apr 18, 2005 2:32 pm
Posts: 361
Smoothing angle applies to other applications - it is not available in SketchUp. The solution for SU (as Mihai suggested) is to subdivide the original polygons as SU tends to create big polygons which can cause problems for displacement.

Pavol

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 Post subject:
PostPosted: Sat Feb 14, 2009 12:23 pm 

Joined: Mon Apr 11, 2005 10:47 am
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Location: Germany
pelias wrote:
Smoothing angle applies to other applications - it is not available in SketchUp.

so the angle i can set in skp is not the same like smoothing angle? and is not used by mxw?


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 Post subject:
PostPosted: Sun Feb 15, 2009 5:23 pm 

Joined: Mon Apr 18, 2005 2:32 pm
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numerobis wrote:
so the angle i can set in skp is not the same like smoothing angle? and is not used by mxw?
I am not sure what you are referring to in this case - I am not aware of smoothing angle setting in SU. What I am missing?

Pavol

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 Post subject:
PostPosted: Tue Feb 17, 2009 2:37 pm 
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Joined: Mon Apr 11, 2005 9:24 am
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Location: Sydney, Aust
pelias wrote:
numerobis wrote:
so the angle i can set in skp is not the same like smoothing angle? and is not used by mxw?
I am not sure what you are referring to in this case - I am not aware of smoothing angle setting in SU. What I am missing?

Pavol


Pavol the smoothing angle in SU can be set via the Soften Edges dialogue panel.

Window > Soften Edges

As suggested abouve would this effect the edges of displaced faces?

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 Post subject:
PostPosted: Wed Feb 18, 2009 10:00 pm 

Joined: Mon Apr 18, 2005 2:32 pm
Posts: 361
Ooops - I wasn't aware of that. Man learns every day :-)

Yes - it should have the desired effect as explained above.

Pavol

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 Post subject:
PostPosted: Thu Feb 19, 2009 12:31 am 
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Joined: Sat Apr 09, 2005 12:07 pm
Posts: 249
Location: New York, USA
pelias wrote:
Ooops - I wasn't aware of that. Man learns every day :-)

Yes - it should have the desired effect as explained above.

Pavol


I was always asking myself why we had to "recalc" and why Studio couldn't grab the smoothness from SU... :oops:

Ciao, Gio


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