Re: RE : Re: RE : RE : Re: Rotation around Arbitrary axis addition to DisplayObject3D

calculateMultiply is part of your Mesh3D class. You should already have it. Make sure that its in your Matrix3D class, and also make sure that your DisplayObject3D class is importing the Mesh3D class. It might help if you grab the most recent SVN.

Also, i havent tried it with a collada file with more than 1 object in it yet. (Moon, can you send me your collada file so i can test that out? I dont have any that act as you describe).

In the example i gave, the camera rotates around the earth object like you said. I dont see why it wouldnt work if you tell it to rotate around the nested object.
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From the way it sounds.. you want to rotate the object around a central point, but the central point isnt an object?  I overlooked this in my code, but the way you can do it is fairly simple.

Modify the rotationArbitrary method in your DisplayObject3D class to be

rotateArbitrary( angle:Number, axis:Number3D = null, targetObject:* = null)

now... instead of sending the object, or not sending anything at all as your targetObject, you'll need to send the Number3D representing the center of your object...

once you change that... try these:

rootNode.rotationArbitrary(.05, new Number3D(0,1,0), new Number3D(x,y,z));

x being the X coordinate that you want to be the new center.
y being the Y coordinate of your new center.
z being the Z coordinate of your new center.

Note that rotations can be in any direction based on the first Number3D;
in this example its a rotation around the Y axis (0,1,0). You dont have to use integers. You can rotate it on any axis ( 2.1, 0.45, 5)  if you want.



========== everyone...
test this out and let me know if it works, i've tried a few tests, but I havent tried with multiple nested objects, and I havent been able to test it many times.

==========

I also want to add an offset value to the function, which would allow you to specify a rotation distance. Currently, it just rotates from where its placed in the file.




--
Dustin Sparks
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