[This tutorial is for people who have some knowledge of photo editing programs such as Photoshop & Paint Shop Pro and the MCM 2 Track Editor "Armadillo".]
Pure white colors yield high probability of a tree going there. Black
yields zero probability a tree will go there. 128,128,128 grey = 50%
probability and so on. It works just like a displacement, only brightness
equates to higher probability of tree placement rather than terrain
1. Make 4 480x480 24-bit tga images - 2 solid black, 2 solid white.
2. Put the black images in your "TextureMaps/Ontrack" and "TextureMaps/Edgetrack"
3. Put the white images in your "TextureMaps/Offtrack" and "TextureMaps/Edgetrack"
Start up Armadillo and open the track you want to make a probability
map for, click the "Texture Maps" tab.
In the "Ontrack" dropdown box, select "Black".
In the "Offtrack" dropdown box, select "White".
In the "Edgetrack" dropdown box, select "White".
Reduce the "Number Ruts" to "0".
Reduce the "Feather Distance" to "0".
[NOTE: You can also
make the "Egdetrack" black if you don't want vegetation close to the
edge of your track path.]
You can get rid of the shadows, rendered by the directional lighting,
by clicking the "Environment Options" tab
and changing the "Heading" to "0", then clicking "Generate Trees"
- do this before you click "Apply" under the "Texture Maps" tab.]
6. Click "Apply" - your track path should be black and everything else should be white.
7. Click the "Export" button, located near the bottom of the "Edit Textures"
panel, give it a name - (yourtrack)_prob - and export it a folder you
can find easily.
8. Now exit the editor WITHOUT saving. Doing this will leave your track as it was before you opened it.
9. Open a photo editing program - such as Photoshop or Paint Shop Pro - and
import it. The size will be 960x960 so you'll need to resize it to
256x256. You also need to "rotate" it 90 degrees counter clockwise
10. Create a 24-bit .TGA at 1280x1280 resolution that is pure black.
11. Copy & Paste the 256x256 image into the "center" of the 1280x1280 image.
Here's a way to center it:
Shrink your 1280x1280 by "Zooming Out" (under the "View" tab) and move it to the bottom right of your photo editor.
When clicking "Paste", DO NOT move your mouse and "left click" twice.
It will paste it perfectly into the center of the 1280x1280, if you haven't moved it.
You will now be able to customize your prob map by adding different
shades of white or grey to the "ontrack" area or the surrounding area of the
track where you want vegetation to go. Also, paint your prob
maps black everywhere you place 3D models and DO NOT want trees to
show up sticking up through the object.]
it as a 24-bit tga image. Make sure you name your prob map: (yourtrackname)_prob.tga
Put it in the folder where your track is located - usually your