alice-teacher ALice 3 camera marker simultaneous movement

[Donald Slater]

I believe that Melanie’s suggestion is the best one. Markers, both camera and object, were not designed to be moveable during runtime, only in the Scene setup. The metaphor Alice is using is that of markers or “spikes’ used in theatrical productions, which once set, should not be moved during the show.  If a marker is needed at another location, create a new marker.

Melanie is suggesting the creation of a virtual “rig” that is attached the camera to the character or vehicle.

1. Position the camera in its relative position to the character.
2. Add the object that will serve as the “rig” to the Scene. (We have found that the axes, found in the Shapes Gallery works well for this purpose.)
3. Move and Orient the rig object to the camera.
4. Set the Vehicle property of the rig object to the character.
5. Set the Opacity property of the rig object to 0.0.

Let me know if you have any questions.

Don Slater


> On Apr 21, 2022, at 1:40 PM, Melanie Lam <melanielam at cmu.edu> wrote:
> 
> One suggestion (because camera markers don't operate exactly like objects) - you could have 3 'invisible objects - opacity 0' that are vehicled to the snowman. They always move with the snowman. and you 'move and orient the camera' to those invisible objects?
> 
> There's probably other ways - but that's what comes to mind.
> 
> best,
> -Melanie
> 
> 
> On Thu, Apr 21, 2022 at 10:32 AM Ziccardi, Adam <aziccardi at opschools.org <mailto:aziccardi at opschools.org>> wrote:
> Hi all,
> I seek any ideas/help so as to have three camera locations (overhead wide, third person , and 1st person) all move simultaneously as a snowman moves around a scene.
> When we move the snowman whichever camera location is the active one is moving with the snowman (as we vehicled the camera to the snowman).
> Toggling the camera to the other two view pioints, though, we are putting the camera where the camera marker was at the last point it was the one the camera was attached to.
> Problem is : how to keep all the camera markers moving (vehicled to the snowman) as any of the other ones are moving.
> If that makes sense...I will attach a file shortly,
> AZ
> 
> -- 
> Adam Ziccardi
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