How to use

getWorldRotation

method

in

com.jme3.effect.ParticleEmitter

/**
 * Callback from Control.render(), do not use.
 *
 * @param rm
 * @param vp
 */
private void renderFromControl(RenderManager rm, ViewPort vp) {
  Camera cam = vp.getCamera();
  if (meshType == ParticleMesh.Type.Point) {
    float C = cam.getProjectionMatrix().m00;
    C *= cam.getWidth() * 0.5f;
    // send attenuation params
    this.getMaterial().setFloat("Quadratic", C);
  }
  Matrix3f inverseRotation = Matrix3f.IDENTITY;
  TempVars vars = null;
  if (!worldSpace) {
    vars = TempVars.get();
    inverseRotation = this.getWorldRotation().toRotationMatrix(vars.tempMat3).invertLocal();
  }
  particleMesh.updateParticleData(particles, cam, inverseRotation);
  if (!worldSpace) {
    vars.release();
  }
}

/**
 * Callback from Control.render(), do not use.
 *
 * @param rm
 * @param vp
 */
private void renderFromControl(RenderManager rm, ViewPort vp) {
  Camera cam = vp.getCamera();
  if (meshType == ParticleMesh.Type.Point) {
    float C = cam.getProjectionMatrix().m00;
    C *= cam.getWidth() * 0.5f;
    // send attenuation params
    this.getMaterial().setFloat("Quadratic", C);
  }
  Matrix3f inverseRotation = Matrix3f.IDENTITY;
  TempVars vars = null;
  if (!worldSpace) {
    vars = TempVars.get();
    inverseRotation = this.getWorldRotation().toRotationMatrix(vars.tempMat3).invertLocal();
  }
  particleMesh.updateParticleData(particles, cam, inverseRotation);
  if (!worldSpace) {
    vars.release();
  }
}

/**
 * Callback from Control.render(), do not use.
 * 
 * @param rm
 * @param vp 
 */
private void renderFromControl(RenderManager rm, ViewPort vp) {
  Camera cam = vp.getCamera();
  if (meshType == ParticleMesh.Type.Point) {
    float C = cam.getProjectionMatrix().m00;
    C *= cam.getWidth() * 0.5f;
    // send attenuation params
    this.getMaterial().setFloat("Quadratic", C);
  }
  Matrix3f inverseRotation = Matrix3f.IDENTITY;
  TempVars vars = null;
  if (!worldSpace) {
    vars = TempVars.get();
    inverseRotation = this.getWorldRotation().toRotationMatrix(vars.tempMat3).invertLocal();
  }
  particleMesh.updateParticleData(particles, cam, inverseRotation);
  if (!worldSpace) {
    vars.release();
  }
}