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Populate trees using image mask
Posted: 15 February 2013 11:59 AM   [ Ignore ]   [ # 16 ]
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Here it is. Thanks.

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DEM.jpg
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Posted: 16 February 2013 08:28 PM   [ Ignore ]   [ # 17 ]
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Sorry for the delay, I haven’t forgotten about this.
I downloaded the pic thanks and have put it together, it’s just a case of writing up the instructions.
I’ll try and do it tomorrow but I may not get time now until Monday.

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Posted: 17 February 2013 01:48 AM   [ Ignore ]   [ # 18 ]
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It’s not a problem. When you have time.
Thanks for your help.

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Posted: 27 February 2013 11:35 AM   [ Ignore ]   [ # 19 ]
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Hey TheSavage64,
Sorry to bother you.
Can you tell how I can do that?
Thabks

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Posted: 27 February 2013 10:03 PM   [ Ignore ]   [ # 20 ]
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Oh yeah sorry, my bad… got carried away with other stuff.
Here we go:

First in a photo editor make sure both the height map and forest area are the same size and directly overlay each other and save them as grey scale for the height map and forest area as bitmap.

Open Bryce and create a new terrain.
Click the Edit Terrain icon to take you to the Terrain Editor window.
Delete terrain that is displayed by clicking the ‘New’ button.

Pic 1:
A. In the ‘Editing Tools’ pane, click the ‘Picture’ tab.
B. Click ‘Load’ and navigate to the height map picture you’ve just saved and load it.
C. Click ‘Apply’

Click the tick to accept your changes and go to the main viewport and adjust the Y axis until the height looks correct.
Click the Attributes button (the little ‘A’ in the selected object’s floating sub menu) and change the name to ‘Height’.

Duplicate this terrain, don’t move it at all yet, but go to Attributes and change it’s name to ‘Forest’
Then with forest selected go to the Terrain Editor and follow the same procedure above to get the Forest Area picture loaded.

New we’re going to use the clipping filter to get rid of the top and bottom of the terrain so that hopefully what we are left with is just the area where the trees will be.

Pic 2:
D. Click on the very top of the bracket and drag it downward. you will see that above the bracket turns yellow and a corresponding area on the flat preview also turns yellow. You may not have to drag with down very far (if at all), it’s just to get rid of any peaks, but really for what we’re doing here, it’s not essential as you will see.
E. Click on the very bottom of the bracket and drag it upwards. You will see that below the bracket turns red and a corresponding area on the flat preview also turns red. This is the important one here as this is cutting off and therefore making invisible anything below the height you set.

It’s a bit tricky selecting the correct part of the bracket and if you don’t get it just right,and click on the greyscale strip it will simply drag the strip and do something completely different.

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Posted: 27 February 2013 10:19 PM   [ Ignore ]   [ # 21 ]
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So now go back to the main viewport and move the forest area up on it’s Y axis so it’s out of the way.

Select the terrain you named Height and again duplicate it,

Pic 3
in the attributes, change the duplicates name to ‘Canopy’ (these names aren’t important only it makes it easier to identify them later so call them what you want as long as you can remember which is which).
Also set it’s Boolean status to ‘Intersect’

Go to any of the side views and using the Y axis, move the Canopy terrain upward so that it is about the relative height of the forest away from the main Height terrain (working at the scale of this example it’s only a very small amount).

Now move your Forest terrain down so it’s base is at the same level as the base of the height map and stretch it’s Y axis so that the top extends beyond the highest part of the Canopy.

In the Forest terrain attributes, set it’s Boolean status to ‘Positive’.

Now select both the Forrest terrain and the Canopy terrain and group them together (use the little G in the selected item’s floating sub menu).

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Posted: 27 February 2013 10:24 PM   [ Ignore ]   [ # 22 ]
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So at the various stages, here’s what you should see.

Pic 4
Top Left: The Height Map
Top Right: The Forest Area
Bottom Left: The Forest area and the Canopy as a grouped Boolean
Bottom Right: All three terrains composed together.

Fine alterations can be made easily by selecting the Canopy or Forest terrain and adjusting them upwards or downwards.

It’s better to choose contrasting colours for this so you can see at a glance if there’s anything wrong.

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Posted: 27 February 2013 10:28 PM   [ Ignore ]   [ # 23 ]
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Then by choosing the height terrain and adding an appropriate texture and then selecting the grouped boolean of the forest and adding an appropriate texture, you’re done.

Hope this helps.

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Finished-Render.jpg
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Posted: 28 February 2013 03:41 AM   [ Ignore ]   [ # 24 ]
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Thanks a lot TheSavage64.
It helped me a lot. Much appreciated.

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