Pointing Normals

[aracid]

Hey all

Could someone explain how i could point the Point normals of one surface -B- to another surfaces Points (of the same point count) -A-

ie

I know the point sop is probibly the first solution, but if the explanation could be done using a custom sop, it would be great.

Thanks in Advance

aracid

[old school]

I just built a tool that takes two inputs and aims the first ponts at the secon points: The first is the aim points and the second input is the target points. It is interactive and commented. It is fully interactive in the 3D viewport as well. You can do crazy stuff like orient points at other points on the same geometry using the native sort order.

I wanted to bash this one out for a long time and it is pretty simple.

I will have this posted up on the exchange very soon.

-jeff

[sibarrick]

The point sop solution is pretty easy. Assuming the same number of points and point ordering. Just pump the points you want to look at into the second input and then in the add normals field put

$TX2-$TX $TY2-$TY $TZ2-$TZ

then follow this up with a facet sop, with make normals unit length turned on.

[aracid]

hey hey

thanks for the reply guys

old school --> would like to try out ur gadget once u done :-)

sibarrick, thanks for the facet sop tip, i had the equation, butthe facet sop is what i needed to add

how in vex can i use, say the Position of a point from the second input?

basically, how do i read the second input in vex ?

thanks in advance

all the best

aracid

[deecue]

can't help you out vex wise, but look into the point() function to obtain point position..

[sibarrick]

In vex use the import function, this lets you specify which input to use

so

int test = import("P", myP, 1, ptnum) ;

will bring in the position of point ptnum from input 1. Input numbering starts at 0.

Edited December 1, 2004 by sibarrick

[aracid]

THREE WORDS ---> FAN-TAS-TIC!

thanks sibarrick

and thanks deecue for the advice.

all the best

aracid