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Rev 62 Rev 104
Line 55... Line 55...
55 
		link(hno,ho->next);
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		link(hno,ho->next);
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		link(ho, hno);
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		link(ho, hno);
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		hno->vert = vo;
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		hno->vert = vo;
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		ho->vert = vn;
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		ho->vert = vn;
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- 
 
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		if(h->face != NULL_FACE_ITER)
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 		h->face->last = hn;
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				h->face->last = hn;
- 
 
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		if(ho->face != NULL_FACE_ITER)
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 		ho->face->last = ho;
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				ho->face->last = ho;
- 
 
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		hn->face = h->face;
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		hn->face = h->face;
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		hno->face = ho->face;
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		hno->face = ho->face;
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		check_boundary_consistency(vn);
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		check_boundary_consistency(vn);
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		check_boundary_consistency(v);
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		check_boundary_consistency(v);
Line 554... Line 557...
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		// after the operation which means it would be degenerate.
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		// after the operation which means it would be degenerate.
555 
		VertexIter va = h1->vert;
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		VertexIter va = h1->vert;
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		VertexIter vb = h2->vert;
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		VertexIter vb = h2->vert;
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		int vala = valency(va);
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		int vala = valency(va);
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		int valb = valency(vb);
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		int valb = valency(vb);
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		if((vala <= 3) || (valb <= 3))
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		if((vala <= 3 && !is_boundary(va)) ||
- 
 
 563 
			 (valb <= 3 && !is_boundary(vb)))
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			return false;
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			return false;
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		// If the two vertices being connected by the flip are already
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		// If the two vertices being connected by the flip are already
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		// connected, the mesh would become degenerate, so we disallow
 567 
		// connected, the mesh would become degenerate, so we disallow
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		// the operation.
 568 
		// the operation.