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 Post subject: Tips for 3D Heightmap Editing
PostPosted: Sat Oct 02, 2004 8:57 pm 
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Programmierdochfix
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Joined: Tue Apr 27, 2004 12:53 pm
Posts: 891
Location: Braunschweig
How to shape the terrain in 3D

Switch to the Heightmap editing mode and raise/lower some heightmap elements as desired.
Afterwards switch to the Filtering edit mode and select the Flatten filter. Flatten an area around the previously raised/lowered heightmap element to an even height.
Now use the Average filter to make the borders of the flattened plateau smoother. Use a large Filter mask size (for example 8) to get very smooth transitions or a small Filter mask size (for example 3) for steeper slopes.


Natural deviations

Most likely some areas of your terrain will have a very even surface. To give these areas a more interesting and natural shape you can use noise functions (the Guassian noise filter PlugIn) to alter the height of the heightmap elements randomly.
  • Use a small Half value width (30 for example) to roughen large even areas.
  • Use a larger Half value width (>100 for example) at the base of slopes to create a more natural transition between even and aslope areas.

Efficient heightmap editing

Filters can help you creating terrains more time efficient than editing every heightmap element directly. With filters you can make your terrain smoother (Average filter) or rougher (Gaussian noise filter). You can even raise or lower it to shape small ridges or rifts (Raise/Drop filter). You can create plateaus (Flatten filter) to achieve an even ground in order to place some objects on it for example.

  • Use the accelerator keys to switch between Heightmap Editing and Filtering edit mode. <Alt> + <F> for filtering and <Alt> + <H> for heightmap editing.
  • Use filter functions whenever it is possible, as you can edit a larger terrain area with them in a shorter time.
  • Use the accelerator keys (<Alt> + <1> ... <Alt> + <6>) to switch very fast between the available filter PlugIns.


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 Post subject:
PostPosted: Mon Oct 04, 2004 9:00 pm 
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Programmierdochfix
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Joined: Tue Apr 27, 2004 12:53 pm
Posts: 891
Location: Braunschweig
Tips for the Heightmap Editing Mode
  • You don't need to hit a heightmap element directly with the mouse cursor. When you press the mouse button over the terrain the cursor will be positioned directly over the nearest heightmap element.
  • You can achieve the best and most natural results by using a tool size of 4 or above. Smaller tool sizes will create very spherical hills.
  • Use the right mouse button to alter one single heightmap element without affecting the surrounding ones to model the final terrain details.


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