Tween camera.lookAt?

[Petermm]

Is there a way to read the three rotation-values that the
camera.lookAt-function calculates? I would like to tween the camera to
a new lookAt position, instead of suddenly setting it to that
orientation.

[richardolsson]

The best way of doing that, I reckon, is to tween the values of a
position vector, and for every frame (or other interval) invoke lookAt
().

This would be one way of doing it using Tweener:

var myTargetPos:Number3D = new Number3D;
Tweener.addTween(myTargetPos, { x: 100, y: 100, z: 100, time: 1,
onUpdate: function() {
myCamera.lookAt(myTargetPos);
} });

The above code may contain errors, but I hope that you are able to
understand the concept of it.


Regards
/R

[Petermm]

I do. Thanks, i hadn't thought of something like that. I use TweenLite
and i can use an onUpdate-function there as well.

[richardolsson]

Great! An onUpdate function may or may not be the preferred way,
depending on how often it fires. It is unnecessary to invoke the lookAt
() method at a higher frequence than the stage redraws, so if onUpdate
fires between screen redraws (for example on a timer) you are probably
better off calling lookAt() from your render loop.


Good luck!

/R

[Jensa]

Another and much simpler trick is of course to use a TargetCam on a
cube that you don't add to the scene? Just tell the camera to look at
it and tween it to where you want the camera to look? That way you can
also turn it on/off for debugging.

J