if (edgeClass.isEnabled() && vizConfig.isShowArrows() && dataBridge.isDirected()) {
gl.glBegin(GL2.GL_TRIANGLES);
for (Iterator<EdgeModel> itr = octree.getEdgeIterator(); itr.hasNext();) {
EdgeModel obj = itr.next();
if (obj.getEdge().isDirected() && obj.markTime != markTime) {
obj.displayArrow(gl, glu, vizModel);
obj.markTime = markTime;
}
}
gl.glEnd();
}