CharacterControl - getViewDirection/setViewDirection

Troubleshooting graphics
1

Hello,



I took the hellocollision code and have been trying to play with CharacterControl. Could anyone please tell me how to rotate the character here? I think what I am trying to do is try to do the same thing as the default mappings for up/down/right/left buttons.

I tried using getViewDirection and setView Direction but haven’t been able to get the desired results. This is how my code looks for now:

[java]



Vector3f vectorA=player.getViewDirection();

Quaternion roll= new Quaternion();

roll.fromAngleAxis(-FastMath.QUARTER_PI, Vector3f.UNIT_Y);

Vector3f vectorB=roll.mult(vectorA);

player.setViewDirection(vectorB);



…

…

[/java]



Could anyone please help me here?

2

I think fromAngleAxis returns a new quaternion.

So you should do:

[java]Quaternion roll= new Quaternion().fromAngleAxis(-FastMath.QUARTER_PI, Vector3f.UNIT_Y);[/java]

instead of

[java]Quaternion roll= new Quaternion();

roll.fromAngleAxis(-FastMath.QUARTER_PI, Vector3f.UNIT_Y);

[/java]

3

Check the code/javadoc:



[java]

/**

  • <code>fromAngleAxis</code> sets this quaternion to the values specified
  • by an angle and an axis of rotation. This method creates an object, so
  • use fromAngleNormalAxis if your axis is already normalized.

    *
  • @param angle
  •        the angle to rotate (in radians).<br />
  • @param axis
  •        the axis of rotation.<br />
  • @return this quaternion

    */

    public Quaternion fromAngleAxis(float angle, Vector3f axis) {

    Vector3f normAxis = axis.normalize();

    fromAngleNormalAxis(angle, normAxis);

    return this;

    }

    [/java]



    It quite clearly doesn’t return a new Quaternion…