Accumulate rotation

Troubleshooting graphics
1

Hi all i trying to accumulate rotation something like this



First rotate 90 degree (Y axis)

Segond, after the object was affected by the first rotation, i want rotate the same object 37 degree in difierent axis



now i using object.setLocalRotation() and quaternions, but when i use again object.setLocalRotation() i didn't get the expected result, any clue on  how to do that ?

2

use something like this:

float[] angles = {.65f,1.57f, 0}; // {x-axis rotation, y rotation, z rotation} (in radians)
object.getLocalRotation().fromAngles(angles);

3

hi all here is the new code, but i don get the spected result




 Quaternion q1 = new Quaternion();
 q1.fromAngleAxis(this.getRotationSpin(), new Vector3f(0,1,0));

 obj.setLocalRotation(q1);

  q1.fromAngleAxis(-90, new Vector3f(1,0,0));

  obj.getLocalRotation().multLocal(q1);




any clue of why my object ratate wired
thanks in advance for yout help!
4

setLocalRotation() will overwrite the currently set rotation, i think you need to multiply the current with the rotation you want to add.



try: object.getLocalRotation().multLocal(rotationQuaternion)

5

Well, actually I don't know the the result of getRotationSpin() but fromAngleAxis

expects radians not degree. That means you have to convert your 90

6

In Zathras Beginners FAQ theres some nice predefined Quaternions (scroll down to about middle of page). Maybe these can be helpful?

7

Hi all here is the code working your information was so helpful , thanks to all!!!




    Quaternion q1 = new Quaternion();
    Quaternion q2 = new Quaternion();
      
         q1.fromAngleAxis(this.getRotationSpin(), new Vector3f(0,1,0));
        
         planetShape.setLocalRotation(q1);
         q2.fromAngleAxis(-90*FastMath.DEG_TO_RAD, new Vector3f(1,0,0));
         planetShape.getLocalRotation().multLocal(q2);