docs: public void setFrustum(Matrix4f projMatrix)
      {
          if (projMatrix != null)
          {
              if (mProjMatrix == null)
              {
                  mProjMatrix = new float[16];
              }
              mProjMatrix = projMatrix.get(mProjMatrix, 0);
              mScene.setPickVisible(false);
              if (mCuller != null)
              {
                  mCuller.set(projMatrix);
              }
              else
              {
                  mCuller = new FrustumIntersection(projMatrix);
              }
          }
          mProjection = projMatrix;
      }