# calculate globalmatrix for GeRayCollider

On 17/03/2016 at 03:23, xxxxxxxx wrote:

how do i calculate the correct matrixes for a geraycollide to get the option to move the target and the source? all i see is that geraycollide works with local matrixes and i presume that i need to calculate a global matrix for it. but i don't know how

``````
import c4d
from c4d.modules import mograph as mo
from c4d.utils import GeRayCollider
#Welcome to the world of Python

def main() :

md = mo.GeGetMoData(op)
if md is None: return False

cnt = md.GetCount()
marr = md.GetArray(c4d.MODATA_MATRIX)
fall = md.GetFalloffs()
ray = GeRayCollider()
UsrDtColl = op[c4d.ID_USERDATA,1]
ray.Init(UsrDtColl, True)

ml = gen.GetMl()
mg = gen.GetMg()
img = ~mg

for i in reversed(xrange(0, cnt)) :

if ray.Intersect(marr[i].off+img.off,marr[i].off+img.off, 300) == True:
marr[i].off =  ray.GetNearestIntersection()["hitpos"]

md.SetArray(c4d.MODATA_MATRIX, marr, True)

return True

``````

On 17/03/2016 at 16:12, xxxxxxxx wrote:

status update:

now i can move the source point of the GeRayCollide, rotate won't work atm.
next step is to make the collider moveable too.

current file:

http://postwendend.com/frei/ray2.c4d

On 18/03/2016 at 03:16, xxxxxxxx wrote:

Hi,

The explanation and script source code in the following post should help you:
https://plugincafe.maxon.net/topic/8840/11677_problem-with-geraycollider-solved&PID=46053#46053