touk

I'have a matrix for example a dim 3*3 to generate a mesh using tri_grid as draw_mode

-----------------------js ---------------------

    for(var j = 0; j< m.dim[1]; j++){

        myarray.push(m.getcell([i,j]))

Now i want to get a new array with index of faces wich must be like :

i tried but i can't see how to process, if someone could point me on the good direction....

i keep datas in js :
-----------------------js ---------------------
for(var i = 0; i< m.dim[0]; i++){
	for(var j = 0; j< m.dim[1]; j++){
		myarray.push(m.getcell([i,j]))
	}
}
-----------------------js ---------------------

Now i want to get a new array with index of faces wich must be like :
F1   0,1,3
F2   1,3,4
F3   1,2,4
F4   2,4,5
F5   3,4,6
F6   4,6,7
F7   4,5,7
F8   5,7,8

i tried but i can't see how to process, if someone could point me on the good direction....


jit.gl.Mesh how to retrieve index of face ?