Xpresso - scaling a polygon

[Srek]

Hi,
the polygon node will give you the points that define it. By modfiying those points you can change the polygon to your likeing.
Cheers
Björn

[pgrooff]

Ok, but how to scale points?
A polygon is easy to scale, but points?

[Srek]

You can't scale a single point, it has no dimensions, it is only a position information. Scaling a group of points works just like scaling a polygon.
Cheers
Björn

[pgrooff]

So how should I scale a number of points (= polygon) then ?
I know how to get one point, but not how to get a number of points and then scale them.

Glædelig Jul / Merry Xmas

[Srek]

That should be done in coffee. Get the coordinates, calculate a center or set it by hand and make the coordinates local to that center (just subtract the center coordinates for all point coordinates). Now you only have to scale those position vectors by a common factor. After this retransform those local coordinates to the normal coordinates (add back the center position)
Cheers
Björn

[pgrooff]

Thanks for the explanation.
Coffee is not in my 'sight' (yet), so I try something else.

[CGTalk Moderation]

This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.