Maxscript - Finding NURBSCVSurface sub-object world position coordinates

[michael.driscoll]

I'm trying to access the world position coordinates of the control vertices in a NURBSCVSurface sub object.

The position is always returned as a value relative to the centre of the sub object rather than relative to the world coordinates.

I don't know how to access the pivot point coordinates of the NURBSCVSurface sub object.

If I did, I would just add these to the relative coordinates to get my answer.

I've included a v. simple script below to see what I mean.

To test it, create a simple CV Surf (Create-->Geometry-->NURBS Surfaces-->CV Surf) that isn't centered around the origin (I couldn't attach files for some reason).

objNode = $Surface001
objNode.pos
classof(objNode)

getset = getNURBSSet objNode #relational 

-- Get the first NURBSCVSurface sub-object:
obj = getObject getset 1

-- Output name of the sub object to listener:
obj.name

-- Output position of the first control vertex to listener
position = (in coordsys local getCV getSet[1] 1 1).pos

-- Apply transform to convert to world coordinates (doesn't work):
trnsform = obj.transform
worldPosition = (position*trnsform)	

[Steve_Curley]

Most app-specific filetypes will not attach directly - Zip (not .rar or .7z or anything else, just zip) the file and it should attach, provided it does not exceed the permitted file size (5MB).

[michael.driscoll]

Files attached as zip file. 🙂

[Swordslayer · Accepted solution]

Well, I didn't actually open the file and only guess, but what about

getPointPos objNode 1

[michael.driscoll]

Thanks Swordslayer!
It worked a treat. 🙂