Bogus Exception wrote:
> OK...
>
> I thought I knew 3ds pretty good, and thought I could find an answer
> all on my own for a tutorial I'm writing for my blog, but I can't. I'm
> looking for help, ideas, suggestions.
>
> Quick version: Need to restrict the look at constraint to only 1 axis.
>
> That might not be enough, so let me give a better use case. When you
> buy certain collections of people, lets say, they come as an image
> with mask, not as an actual model. These are for large crowds that
> don't move, stills, or distance work. Either way, you want the planes
> (basically) to have their "content" side facing the camera at all
> times. The problem is that the look at constraint won't do this (as
> far as I can tell). It will present the object to the camera from any
> aspect you choose, but once selected, the object presents that same
> relation****p to the camera.
>
> So "Why is this a problem?" you ask? Well, as long as the camera
> stays, in this case, the same "height" above the object, and the same
> distance away from it, all is well. However when the camera (or other
> object(s) it is constrained to) moves closer or in the vertical
> directions, the constrained object (expectedly) keeps looking at the
> camera, which strays it from vertical.
>
> So if you had a person object with a look at constraint to a camera
> from any distance, the object would unrealistically lay flat on the
> ground as the camera passed overhead.
>
> Solution?
>
> There needs to be a way to tell a look at constrained object to look
> at the controller (camera, etc.) by only rotating in, say, the Z axis-
> no others.
>
> I've tried with dummy objects, but still can't find a way to give the
> camera complete freedom.
>
> Ideas?
>
> TIA!
>
> Bogus Exception
>
Restrict the object's axis'.
I'm on my Mac now so I can't just rev up max and do it. ...but I think
it's in the animation tab/rollout. In other words, forget about
adjusting the constraint itself and *select* the object doing the
"looking". You should see BOTH rotation and movement restraint check
boxes if you are in the right menu tab.
I hope I helped...
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