[fluxus] Location in screen coordiantes WAS Re: a couple of questions

[Alex]

hmm, I'm still struggling with this, I want to be able to find the X
and Y position of an object relative to the screen, ie an object at
1,0,0 would have a greater X then something at 1,0,-10 because of
perspective.
also, if i move the view to the right with the middle mouse drag, i'd
like the X position to change because an object would move the the
right (ie. the center of the screen should be (0,0))

I'd also like to find the distance from the camera to an object.

is there any way to do this?

Basically, I want to be able to send this data with OSC to
supercollider, I want the user to be able to navigate in my "world"
and have items on the right side of the screen sound like they are
coming from the right, no matter how much the users twists around in
the world, zooms in or out.... if a users zooms out a lot the X values
will decrease so the sounds should move toward the center.

Thanks,
Alex Norman

On 3/10/06, Dave Griffiths <dave at pawfal.org> wrote:
> > On 10/03/06, Dave Griffiths <dave at pawfal.org> wrote:
> >>
> >> also, while I'm thinking about it, I'd also like to add the ability to
> >> add
> >> seperate camera and focus object attachments.
> >>
> >> do you think this object based approach is ok? the main reason for it
> >> rather than just setting a position vector was that you can have the
> >> camera attached to object in the physics system (for example) and not
> >> worry about having to update the camera every frame.
> >
> > i think the approach is Ok. Blender has nice object type for this kind
> > of things - "empty". it's basicly just a transform.
>
> yep - I'd probably call them locators (from maya) - they are on a todo
> list somewhere.
>
> > i'd extend the approach a bit: in default attach mode it would work
> > like you describe now, but you could also attach "lookat" to a
> > different object (so that the eye is on the original object and view
> > direction is towards the other one).
>
> good plan, this would also take over from the mouse control I think,
> otherwise it'll get a bit confusing
>
> cheers,
>
> dave
>
>
>