Example: Object Hierarchy

• Suppose the current modelview matrix is M:WC->VC (ie, based on VRP, VPN,VUV).

• GObject *object; //pointer to graphics object

  • glMatrixModel(GL_MODELVIEW);
  • /*push and duplicate current matrix*/
  • glPushMatrix();
  • /*premultiply M by CTM*/
  • glMultMatrix(object->CTM);
  • /*now draw all faces in object*/
  • glPopMatrix(); //restore original M

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