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The terrain includes first off all the geometry of the land but I also want to include the placement of the vegetation. </strong></td></tr> <tr><td colspan="2">&#160;</td><td class="diff-lineheader">+</td><td class="diff-addedline"><strong class="diff-mark"> </strong></td></tr> <tr><td colspan="2">&#160;</td><td class="diff-lineheader">+</td><td class="diff-addedline"><strong class="diff-mark">Making a realistic terrain we first of all need to start from something basic this is [documentation:terrain:procedural_terraingeneration:noise|perlin noise]]. This create a very charp and random terrain. </strong></td></tr> <tr><td colspan="2">&#160;</td><td class="diff-lineheader">+</td><td class="diff-addedline"><strong class="diff-mark"> </strong></td></tr> <tr><td colspan="2">&#160;</td><td class="diff-lineheader">+</td><td class="diff-addedline"><strong class="diff-mark">The next stap is to smooth it out in several I&#039;m currently working on 2 ways to do this First of all Thermal errosion this is a more general smooth function in which high placedground is being moved to lower places. </strong></td></tr> <tr><td colspan="2">&#160;</td><td class="diff-lineheader">+</td><td class="diff-addedline"><strong class="diff-mark">The second type of errosion is [[documentation:terrain:hydrolic_errosion_and_river_creation|Hydrolic errosion]] this moves the sediment to lower place according to water flow. 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