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Heightmap

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leszekd25 edited this page Sep 1, 2019 · 2 revisions

Heightmap editor mode

Terrain is built from a heightmap. This editor mode allows you to edit the heightmap and see the effects on terrain immediately.

User interface

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  1. Sculpt brush
  2. Sculpt mode
  3. Brush strength/value

Sculpt brush

You use brush to paint on terrain - whether it's height paint, texture paint, or anything else.

Size

Radius of the brush. The larger the size, the bigger the area affected by brush.

Shape

Currently, brush supports 3 shapes: Square, Circle, Diamond. Circle is the default shape, and is usually enough for most cases.

Interpolation mode

There are 4 interpolation modes for painting brush, all of which affect relative strength of the brush in the painting area: Constant, Linear, Square, Sinusoidal.

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Draw mode

Heightmap editor has 5 sculpt modes available to shape the terrain.

Add, Subtract

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Add mode simply adds height to existing terrain. Subtract mode takes that height away. Strength denotes the height displacement at the center of brush on a single stroke.

Set

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Set mode sets height at a desired value. Interpolation mode does not apply. Value denotes the height the terrain will be set to.

Smooth

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Smooth mode smooths out terrain, diminishing irregularities. Value denotes how much the terrain will be smoothed out in a single stroke, and should be a value between 0 and 100.

Rough

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Rough mode roughs up the terrain, attenuating irregularities. Value denotes how much the terrain will be roughed up in a single stroke, and should be a value between 0 and 100.

3D display controls

You can use Left Mouse Button or Right Mouse Button to modify terrain.

  • Add mode: LMB to add terrain, RMB to subtract terrain
  • Subtract mode: LMB to subtract terrain, RMB to add terrain
  • Set mode: LMB to set terrain, RMB to probe terrain (get height value)
  • Smooth mode: LMB to smooth out terrain, RMB to rough it up
  • Rough mode: LMB to rough up terrain, RMB to smooth it out

Additional information

Editor Status shows terrain height at the 3D cursor position while you're in Heightmap editor mode.

Terrain height can't be lower than 0 or higher than 65535. Terrain with height 0 denotes area submerged in ocean and is impassable.

You can't modify terrain under a lake.

Written with StackEdit.

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