Crater diamete

Hello, i deform terrain(dig a crater) use option BrushSize,but i found that the real diameter of this crater is not the value of the BrushSize, how could i get the real size of the crater? Any help is appreciated!

BrushSize is the radius, no ?

Anyway, you can/should set scene manager option BrushArray, BrushArrayHeight, BrushArrayWidth so that you can handle your own "deforming" array.