C++ (Cpp) Ray::transform Examples

Example #1

File: actor.cpp Project: Nitrus/residualvm

bool VisualActor::intersectRay(const Math::Ray &ray, const Math::Vector3d position, float direction) {
	Math::Matrix4 inverseModelMatrix = getModelMatrix(position, direction);
	inverseModelMatrix.inverse();

	// Build an object local ray from the world ray
	Math::Ray localRay = ray;
	localRay.transform(inverseModelMatrix);

	return _model->intersectRay(localRay);
}

Example #2

File: Planet.cpp Project: MrBr3/Space-Deminer

  bool Planet::get_color(ColorRGBA& resulting_color, const Vector2& screen, Math::Ray ray, gfloat& distance)const
  {
    if(sphere.radius<=0.f)
      return false;

    ray.transform(sphere.inv_transformation);
    if(!sphere.intersects_local(ray, distance))
      return false;

    Vector3 p = ray.origin + ray.dir*distance;
    p.normalize();
    p *= sphere.radius;

    Vector3 normal = p;
    normal *= 1.f/sphere.radius;

    if(Manager::get_settings().get_dbg_normal())
    {
      resulting_color.set_direction(normal);
    }else
    {
      Vector2 uv;

      vec_to_uv(uv, normal);

      if(Manager::get_settings().get_dbg_uv())
      {
        resulting_color.set(uv.x, uv.y, 0.f, 1.f);
      }else
      {
        shader(resulting_color, screen, uv, normal, ray);
      }
    }

    return true;
  }