Method transform

tutorials/common/scenegraph/lights.h:102–104

        : Light(LIGHT_SPOT), P(P), D(D), I(I), angleMin(angleMin), angleMax(angleMax) {}

      SpotLight transform(const AffineSpace3fa& space) const {
        return SpotLight(xfmPoint(space,P),xfmVector(space,D),I,angleMin,angleMax);
      }

      static SpotLight lerp(const SpotLight& light0, const SpotLight& light1, const float f)
      {