public void setStepScale(Vector3f stepScale) {
        this.stepScale = stepScale;
    }
Sets the step scale of this terrain patch's height map. Note that this
does <b>NOT </b> rebuild the terrain at all. This is mostly used for
outside constructors of terrain patches.

@param stepScale
           The new step scale.
jme3-terrain/src/main/java/com/jme3/terrain/geomipmap/TerrainPatch.java