distancePointPlane

Determine the signed distance of the given point <code>(pointX, pointY, pointZ)</code> to the plane specified via its general plane equation <i>a*x + b*y + c*z + d = 0</i>.

@param pointX the x coordinate of the point @param pointY the y coordinate of the point @param pointZ the z coordinate of the point @param a the x factor in the plane equation @param b the y factor in the plane equation @param c the z factor in the plane equation @param d the constant in the plane equation @return the distance between the point and the plane