Easy setup VJ mapping system

vvvv beta question
1

I want build a system where I can put some random screens in a space (all different sizes) and in vvvv quickly map size of each surface then with this mapping project vj sequences over these random surfaces…

I know this difficult…
but what is the best way to do this?

2

if your just trying to project on a flat surface the homography node is your friend. See my attachment for a very crude method. (There are much nicer ways to do this such but this is easy to understand).

crudeMutliScreen.v4p (29.0 kB)

3

thanks for that nitro. what about creating an interface where I can control patterns and colors for each quad? To create a cool live 3d light show!

using quads also can only use squares… not triangles or polygonal shape.

4

you can make triangles by adjusting the homography to a triangle and you could do the polygonal shapes using gridEditor. Have you seen gridEditor?

5

Hey Kit :)
I really like homography. You can’t do everything with it, but it’s fine to use for loads of shapes. I generally use it for a bunch of little circle screens I made. Just grab the transform out from it and feed to whatever. When you are doing the mapping it can be useful to still have some half alpha quads on as a guide, you can think of them as picture frames or clamps which can hold other things.

If you are mapping more tricky stuff, B-Spline (3d Surface) is also worth a look.