Break wire off geometry if at certain angle

[Mala]

Hi, 

 

I'm trying to create an expression in Houdini's Hscript to break the wires off the surface off an object when they reach a certain angle.

 

so far I have this

 

for i=0 to $P step 2

 

    set even = "$i"

    set odd = "$even+1"

    

    while ($F == 0)

    set vec_normal = "odd.$P - even.$P " # find vector at frame 0

        # echo vec_normal

    end

 

    while ($F > 0)    

    set vec_moving = "odd.$P - even.$P" # find vector at other frames

        # echo vec_moving

    end

    

    if (vangle(vec_normal,vec_moving) > 40)

        echo null

    else

        echo even

    endif

    

end

 

but it doesn't work...

 

I was wondering if anyone could help me with this?

 

Thanks in advance!

[schiho]

You should provide a hip file, and why are u using hscript?