[X3D-Public] camera, random path on a sphere around the center

[Bederov, Sergey]

Hello John,

Obviously no interpolator can produce anything random. A couple of ideas:

  -  Generate a reasonably long interpolator using many random numbers and save it to the X3D file;

  -  Create a script which employs a random-number generator to move the camera in real time;

  -  Create several simple interpolators and apply them to nested Transforms the innermost of which contains the camera; if you guess good relationship of rotation axes and speeds, the motion will appear random.

To rotate the camera in a sphere while pointing to the center, I would recommend putting the camera into a Transform and rotate the Transform around the sphere center. This is simpler than separately moving and rotating the camera and will allow to avoid some motion artifacts.


                                           Sergey Bederov



> -----Original Message-----
> From: x3d-public-bounces at web3d.org [mailto:x3d-public-bounces at web3d.org] On
> Behalf Of John Carlson
> Sent: Thursday, November 03, 2011 8:51 AM
> To: x3d-public at web3d.org
> Subject: [X3D-Public] camera, random path on a sphere around the center
> 
> I'd like to take the camera, put it on an invisible sphere, and have it take
> a random path on the sphere while the camera is focused on the center
> (0,0,0) of the scene.  Is there an Interpolator that will do this?  I'd like
> to do this in X3DOM (preferred) or JavaScript (okay).
> 
> John
> _______________________________________________
> X3D-Public mailing list
> X3D-Public at web3d.org
> http://web3d.org/mailman/listinfo/x3d-public_web3d.org