Scale parameter

Question

Hello everyone.
I m trying to create a parameter with 2 or 3 dimension.
Actually just like the scale parameter.
I tried to create it with
PF_ADD_POINT, but it does not work by default with 3 dimension.
How to specify that i want three dimensions? I did not fine any revelant field in paramDef.u.td...
the other problem is that i want to have %, can I specify % in the display parameter of point?
I also wold like to set the precision of my field.
I would like to be able to link my paremeter naturally to a transform scale. Wich succeed with a point parameter when we are in 2D, but fails when you swap to 3D layer...
any ideas?

Answer 1

as far as i know, there's no 3D parameter that looks like what you describe.
many effects that need to define a point in 3D use a point param for the x and y and an additional slider for z.
I totally agree with you that it's a pain in the behind.
having to tie the x and y separately for the z and defining which channel goes where... it's a repeating head ache.
I can think of three solutions for you:
1. create a custom parameter.
you draw the param yourself so you can make it whatever you want.
2. instead of having a parameter that describes a 3D attribute, use a layer selector and read that layer's scale (or position).
you can even have a button on your effect that creates a null object and selects it automatically.
3. use a color param, it can hold 3 or 4 parameters with one keyframe.
in fact, you can use a color param with a custom interface and just draw the data there. the problem with a color param is that it's limited in range. it can't go negative or past 100%.
in my opinion a custom param is the way to go.