Terrain.heightmapPixelError Manual     Reference     Scripting  
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Terrain.heightmapPixelError

var heightmapPixelError : float

Description

An approximation of how many pixels the terrain will pop in the worst case when switching lod.

A higher value reduces the number of polygons drawn.

JavaScript 
function Start () {
    Terrain.activeTerrain.heightmapPixelError = 10;
}