[Closed] Get Gravity-Point of 3D Node ?

What do you mean by gravity point? You mean the pivot?

selection[1].pivot

-Johan

Ok, I’m sorry… the gravity point is not the good word.
I want to say, “Mass Center(pivot)”. the pivot of object mass and not the 3ds pivot of node.

expression of Mass :
mass = density / volume

Sorry for may English !

in the utility panel, the ‘Measure’ tool, or:
in the mxs help, there is a topic called: how to calculate the volume of an object.

point pos:(
	local obj = snapshotAsMesh $
	local faceNum = obj.numfaces 
	local face,vx,vy,vz,dV
	local volume = Float 0
	local center = point3 0 0 0
	for i = 1 to faceNum do 
	( 
		face = getFace obj i 
		vz = getVert obj Face.z 
		vy = getVert obj Face.y 
		vx = getVert obj Face.x 
		dV = dot (cross (vy - vx) (vz - vx)) vx
		volume += dV 
		center += (vx + vy + vz) * dV
	)
	volume/=6
	center/=24
	center/=volume
	center
) wirecolor:yellow