Пример #1
0
  private void manage(Entity e, float elapsedTime) {
    Model model = e.get(Model.class);
    if (!model.isCreated()) return;

    PlanarStance stance = e.get(PlanarStance.class);
    Spatial s = SpatialPool.models.get(e.getId());

    // translation
    s.setLocalTranslation(TranslateUtil.toVector3f(stance.getCoord().get3D(stance.getElevation())));

    // rotation
    Quaternion r = new Quaternion();
    Point3D pu = stance.getUpVector();
    Point3D pv = stance.getPlanarVector();
    Vector3f u = TranslateUtil.toVector3f(pu).normalize();
    Vector3f v = TranslateUtil.toVector3f(pv).normalize();
    r.lookAt(v, u);

    // we correct the pitch of the unit because the direction is always flatten
    // this is only to follow the terrain relief
    double angle = Math.acos(pu.getDotProduct(pv) / (pu.getNorm() * pv.getNorm()));
    r =
        r.mult(
            new Quaternion()
                .fromAngles(
                    (float) (-angle + AngleUtil.RIGHT + model.getPitchFix()),
                    (float) (model.getRollFix()),
                    (float) (model.getYawFix())));

    s.setLocalRotation(r);
  }
Пример #2
0
  @Override
  protected void onEntityEachTick(Entity e) {
    Spatial s = Pool.models.get(e.getId());
    if (s == null) return;

    PlanarStance stance = e.get(PlanarStance.class);

    // translation
    s.setLocalTranslation(TranslateUtil.toVector3f(stance.coord.get3D(stance.elevation)));
    // rotation
    Quaternion r = new Quaternion();
    Point3D pu = stance.upVector;
    Point3D pv = Point3D.UNIT_X.getRotationAroundZ(stance.orientation.getValue());
    Vector3f u = TranslateUtil.toVector3f(pu).normalize();
    Vector3f v = TranslateUtil.toVector3f(pv).normalize();
    r.lookAt(v, u);
    double angle = Math.acos(pu.getDotProduct(pv) / (pu.getNorm() * pv.getNorm()));
    r = r.mult(new Quaternion().fromAngles((float) (-angle), 0, 0));

    s.setLocalRotation(r);
  }