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Author Topic: populate forest over specific material id only  (Read 2115 times)

CO2263

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populate forest over specific material id only
« on: October 09, 2013, 04:01:03 PM »
Hi
Is there any way to populate forest over specific material id (lets say matID=4)?
I have lots of geometry and unfortunately its not instances...  so I need to detach every single polygon, then join, then use as surface to scatter forest (stones in this case)

hope there is a solution

iToo

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Re: populate forest over specific material id only
« Reply #1 on: October 09, 2013, 04:23:10 PM »
No, sorry. There is not an option to scatter by material ID. You must prepare the surfaces manually.
Carlos Quintero
iToo Software

CO2263

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Re: populate forest over specific material id only
« Reply #2 on: October 09, 2013, 04:37:01 PM »
thx for reply
any chance to have this option in the future?

iToo

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Re: populate forest over specific material id only
« Reply #3 on: October 09, 2013, 05:18:15 PM »
If i remember well, we tried it some time ago but there was some technical limitation. I'll take a look to it again.
Carlos Quintero
iToo Software

CO2263

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Re: populate forest over specific material id only
« Reply #4 on: October 10, 2013, 08:20:22 AM »
would be nice
thank you

CO2263

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Re: populate forest over specific material id only
« Reply #5 on: October 10, 2013, 09:25:22 AM »
hi
I have some other issue, could you please help me to isolate the problem
I joined all geometry manually into one polygon (stone_surf)
but stones never grow on it
I made new plane and it works fine over plane. Tried to attach stone_surf to plane - still no luck. Stones don't want to scatter over small polygons (((

pls guide me how to fix it
Thanks

iToo

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Re: populate forest over specific material id only
« Reply #6 on: October 10, 2013, 09:50:26 AM »
Please, check the normals of those polygons. They must be facing up.
Carlos Quintero
iToo Software

CO2263

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Re: populate forest over specific material id only
« Reply #7 on: October 10, 2013, 10:00:18 AM »
yes, that was the first think I checked
extrude polygon goes up
still no luck

iToo

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Re: populate forest over specific material id only
« Reply #8 on: October 10, 2013, 10:10:14 AM »
Please, post a test scene. I will check it.
Carlos Quintero
iToo Software

CO2263

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Re: populate forest over specific material id only
« Reply #9 on: October 10, 2013, 10:15:35 AM »
here it is

my walkoround for now - big plane and spline area instead

iToo

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Re: populate forest over specific material id only
« Reply #10 on: October 10, 2013, 11:39:49 AM »
It was a normals issue after all. Applying a Normal modifier solves the problem.
Carlos Quintero
iToo Software

CO2263

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Re: populate forest over specific material id only
« Reply #11 on: October 10, 2013, 12:41:49 PM »
hm...
I tried 'normal' modifier before and it didnt work
will try again
thank you

PS. any chance to force forest to grow up ignoring normals?

iToo

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Re: populate forest over specific material id only
« Reply #12 on: October 10, 2013, 01:07:49 PM »
Quote
PS. any chance to force forest to grow up ignoring normals?

It would generate strange results with the "Direction" parameter, besides other features that use the surface normal.
Carlos Quintero
iToo Software