concepts::QuadSubdiv4 Class Reference

#include <quadsubdiv.hh>

Inheritance diagram for concepts::QuadSubdiv4:

Public Member Functions
virtual void	createChildren (Quad &q) const
virtual void	removeChildren (Quad &q) const
virtual Edge *	newEdge (const Quad &q, uint i) const
virtual Vertex *	newVertex (const Quad &q, uint i) const

Static Public Member Functions
static const QuadSubdiv4 *	instance ()

Protected Member Functions
virtual std::ostream &	info (std::ostream &os) const
	Returns information in an output stream.

Detailed Description

Subdivision strategy for quadrilaterals which generates four children. This is the default subdivision strategy.

The children are generated by subdividing the four edges and introducing four new edges meeting in the middle of the parent quad.

Author

Philipp Frauenfelder, 2002

Definition at line 73 of file quadsubdiv.hh.

Member Function Documentation

createChildren()

virtual void concepts::QuadSubdiv4::createChildren ( Quad &  q ) const

virtual

If no children of q exist, they are created.

Implements concepts::QuadSubdivision.

info()

virtual std::ostream & concepts::QuadSubdiv4::info ( std::ostream &  os ) const

protectedvirtual

Returns information in an output stream.

Reimplemented from concepts::OutputOperator.

newEdge()

virtual Edge * concepts::QuadSubdiv4::newEdge ( const Quad &  q, uint  i  ) const

virtual

Returns the ith edge which has been newly created by the subdivision. An edge which is the result of a refinement is not newly created.

Parameters

q	Quad which has been refined
i	Index of the new edge

Returns

0 if the new edge with the index i does not exist

Implements concepts::QuadSubdivision.

newVertex()

virtual Vertex * concepts::QuadSubdiv4::newVertex ( const Quad &  q, uint  i  ) const

virtual

Return the ith vertex which has been newly created by the subdivision. An vertex which is the result of a refinement (ie. of an edge) is not newly created.

Parameters

q	Quad which has been refined
i	Index of the new vertex

Returns

0 if the new vertex with the index i does not exist

Implements concepts::QuadSubdivision.

removeChildren()

virtual void concepts::QuadSubdiv4::removeChildren ( Quad &  q ) const

virtual

If there are children, they are removed. The additional edges and vertices are removed as well.

Implements concepts::QuadSubdivision.

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The documentation for this class was generated from the following file:

• geometry/quadsubdiv.hh