Getting a vertex point

[SuperTank]

Hello,
I am trying to deform a plane (lingo primitive). You see, I want the closest
vertex point at the location of a mouse click to jump down alittle in the world
space. However, this is where I'm having somewhat of a problem.

I want to avoid looping through each vector in the vertexList and by this way
getting the vertex closest to my mouseclick. It just seams to demanding by the
computer.

So I thought I'd first start figuring out what row and column of vertices the
clicked occured on, and using this information easily calculate the index to
use in the VertexList.

I thought I'd get the mouse's "impact" coordinates using ModelsUnderLoc() and
then use the isectPosition-property. And this seames to work, my plane is 50 in
length and isectPosition?s z-coordinate goes between -25 to +25. So I guess
I've put that aside (just incase you guys wanted to know).

I'd now thought I'd calculate the row by writing:


tisec = tr[1].isectPosition
_z = tisec.z

tTileLength = ( float( pLength ) / pLengthVertices )

row = ( _z / tTileLength )
row = integer( row )

But this doesnt give me the result I was hoping for.

Any ideas?

Thanks. :)

( more code can be obtained at [url]http://supertank.mine.nu/movie_help.dir[/url] )

[SuperTank]

umm, nevermind. Solved it myself. :)

there's only 3 squares in either direction and I had 4 into my calculation.

[SuperTank]

I will continue update the the link. So if anyone want's to follow the progress of my little game. Go ahead. :)