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Author Topic: Map Channels  (Read 1772 times)

Lehm

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Map Channels
« on: January 30, 2012, 04:00:28 AM »
I am using forest lite to fill in some grass.  I was hoping to vary the scale with a map except I can't figure out how the map channels work on it.  I was trying to using a noise map to do the scaling.  Changing the size parameter of the map didn't appear to have an effect.  You can select a map channel to use...but I didn't see I way to alter the parameters of a map channel...at least I don't see a way to a a uvw modifier.  Any help in properly sizing a noise map for scale appreciated.

iToo

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Re: Map Channels
« Reply #1 on: January 30, 2012, 09:48:10 AM »

The texture maps can use UVW or XYZ coordinates. When you use in Forest a map which requires UVW, the coordinates are taken from the Surface object. You must assign it in the Surface rollout, although in the case of Forest Lite it uses only flat terrains.

The Noise map is a bit special, because it can work both in XYZ or UVW mode (depending from the "Source" selector). So, it's possible to use a scale map without any Surface assigned, selecting the "Object XYZ" or "World XYZ" modes.

I have attached a sample scene.

Carlos Quintero
iToo Software

Lehm

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Re: Map Channels
« Reply #2 on: January 30, 2012, 02:52:57 PM »
Hmm.  Interesting.  I opened your file on my system and all the boxes were the same scale.  After a bit of experimentation I found the culprit.  You have the max size as 54.  I had to change it it down to about .3 to get a similar result.  It seems that its not taking into account the difference between english and meteric...at least that's what it seems.