Update rotation

[GoogleCodeExporter]

Example:
viewer.setParameter('SceneUrl', 'ex1.obj');
viewer.setParameter('InitRotationX', 45);
viewer.setParameter('InitRotationY', 45);
viewer.setParameter('InitRotationZ', 45);

then
viewer.replaceSceneFromUrl('ex2.obj');
viewer.update(true);

How to set new rotation x,y,z of ex2.obj?

Original issue reported on code.google.com by fabien...@gmail.com on 31 Jul 2014 at 9:48

[GoogleCodeExporter]

oh, I setParameter again then init & update. It's work

Original comment by fabien...@gmail.com on 31 Jul 2014 at 10:11

[GoogleCodeExporter]

Don't do that. A viewer instance should not be initialized a second time. The 
viewer.rotate() method 
http://jsc3d.googlecode.com/svn/trunk/jsc3d/docs/symbols/JSC3D.Viewer.html#rotat
e is provided for this purpose. Call viewer.rotate(), passing in the rotation 
angles and it will be ok.

Original comment by Humu2...@gmail.com on 31 Jul 2014 at 11:05

[GoogleCodeExporter]

I tried rotate but it not work 

var canvas = document.getElementById('cv');
var viewer = new JSC3D.Viewer(canvas);
viewer.setParameter('SceneUrl', 'bank/Western_Bank.obj');
viewer.setParameter('InitRotationX', 0);
viewer.setParameter('InitRotationY', 0);
viewer.setParameter('InitRotationZ', 0);
viewer.setParameter('ModelColor', '#CAA618');
viewer.setParameter('BackgroundColor1', '#E5D7BA');
viewer.setParameter('BackgroundColor2', '#383840');
viewer.setParameter('RenderMode', 'textureflat');
viewer.setParameter('MipMapping', 'on');
viewer.setParameter('Renderer', 'webgl');
viewer.init();
viewer.update();
$('#change-obj').click(function(){
    viewer.replaceSceneFromUrl('bank/Western_Bank_2.obj');
    viewer.rotate(45,45,45);
    viewer.update();
})

if no replaceSceneFromUrl => it work & each click obj model rotate 45 45 45.
I want new obj model (replaceSceneFromUrl) has rotate only 45 45 45. I try 
setParameter again then init & update. It's work

Original comment by fabien...@gmail.com on 1 Aug 2014 at 1:25

[GoogleCodeExporter]

viewer.rotate() makes incremental rotations. I guess you should save the 
current rotation angles before call of viewer.replaceSceneFromUrl() and then 
restore them using viewer.rotate().

Original comment by Humu2...@gmail.com on 1 Aug 2014 at 2:05

[GoogleCodeExporter]

I set:
viewer.setParameter('SceneUrl', 'bank/Western_Bank.obj');
viewer.setParameter('InitRotationX', 0);
viewer.setParameter('InitRotationY', 0);
viewer.setParameter('InitRotationZ', 0);
$('#change-obj').click(function(){
        var rotationAngles = viewer.getRotationAngles();

    viewer.replaceSceneFromUrl('bank/Western_Bank_2.obj');
    viewer.rotate(rotationAngles[0],rotationAngles[1],rotationAngles[2]);
    viewer.update();
})

but not work. Rotation is 0 0 0 although I rotation objModel to new rotation
I set:

$('#change-obj').click(function(){
        var rotationAngles = viewer.getRotationAngles();

    viewer.replaceSceneFromUrl('bank/Western_Bank_2.obj');
    viewer.setParameter('InitRotationX', rotationAngles[0]);
        viewer.setParameter('InitRotationY', rotationAngles[1]);
        viewer.setParameter('InitRotationZ', rotationAngles[2]);
        viewer.init();
        viewer.update(false);
})

It't work

Original comment by fabien...@gmail.com on 1 Aug 2014 at 2:15

[GoogleCodeExporter]

I'm afraid you forget the loading is asynchronous. When you call 
viewer.replaceSceneFromUrl(), it won't be done immediately. The correct method 
is to utilize the callback mechanism, overriding viewer.onloadingcomplete 
(http://jsc3d.googlecode.com/svn/trunk/jsc3d/docs/symbols/JSC3D.Viewer.html#onlo
adingcomplete) to defer the rotation until the new model is loaded suceessfully:

  viewer.replaceSceneFromUrl(...);
  viewer.onloadingcomplete = function() {
    viewer.rotate(...);
    viewer.update();
  };

That's it.

Original comment by Humu2...@gmail.com on 1 Aug 2014 at 3:19

[GoogleCodeExporter]

Yes. Thank you. Rotation it work. But each click, it makes INCREMENTAL 
rotations. 
How to reset this to 0 0 0 then resume rotate with rotation current?

Original comment by fabien...@gmail.com on 1 Aug 2014 at 3:28

[GoogleCodeExporter]

Because I set
viewer.setParameter('InitRotationX', 45);
viewer.setParameter('InitRotationY', 45);
viewer.setParameter('InitRotationZ', 30);
not 0 0 0 => each click, objModel will INCREMENTAL rotation, not resume

Original comment by fabien...@gmail.com on 1 Aug 2014 at 3:34

[GoogleCodeExporter]

[deleted comment]

[GoogleCodeExporter]

I see. Try to add this new function to jsc3d.js and use it instead of rotate() 
then:

  JSC3D.Viewer.prototype.setRotations = function(rotX, rotY, rotZ) {
    this.rotMatrix.identity();
    this.rotMatrix.rotateAboutXAxis(rotX);
    this.rotMatrix.rotateAboutYAxis(rotY);
    this.rotMatrix.rotateAboutZAxis(rotZ);
  };

It resets the rotation matrix and apply the given rotations on an identity one.

Original comment by Humu2...@gmail.com on 1 Aug 2014 at 9:55

[GoogleCodeExporter]

Thank you so much. It's work very well

Original comment by fabien...@gmail.com on 2 Aug 2014 at 4:55

[GoogleCodeExporter]

Hello,
I am new at jsc3d, can you show me how to set to the fixed position on click 
event, when the object is at any axis.
I mean to say, when click event is trigger it should bring to (0,0,0) with 
slight animated motion.

Please with some detailed example as I am in learning phase.

Thanks in advance

Original comment by ruchir.k...@gmail.com on 19 Feb 2015 at 7:20