wc.w(1.0f);
wc.multSelf(1.0f / 3.0f);
Vector4 pc = prj.project(wc);
Vector4 pn = prj.project(wc.add(face.getNormal()));
g.setColor(Color.BLUE);
g.drawLine((int) pc.x(), (int) pc.y(), (int) pn.x(), (int) pn.y());
}
}
protected void drawEdge(Graphics2D g, PointData p1, PointData p2,
HullEdge edge, boolean visible) {