func (this *HeightMap) Bump(center mgl.Vec2, height float32) {
minX := mathint.Max(math32.RoundInt(center[0])-5, 0)
maxX := mathint.Min(math32.RoundInt(center[0])+5, this.W)
minY := mathint.Max(math32.RoundInt(center[1])-5, 0)
maxY := mathint.Min(math32.RoundInt(center[1])+5, this.H)
for x := minX; x < maxX; x++ {
for y := minY; y < maxY; y++ {
v := mgl.Vec2{float32(x), float32(y)}
v = v.Sub(center)
bump := math32.Gauss(v.Len())
h := this.Get(x, y)
this.Set(x, y, h+bump)
}
}
this.HasChanges = true
}
func Gauss2fv(v mgl.Vec2) float32 {
return math32.Gauss(v.Len())
}