Decorator class for Triangulations (s. More...

#include <TriDecorator.h>

Inheritance diagram for TriDecorator:

Collaboration diagram for TriDecorator:

Public Member Functions
	TriDecorator ()
	TriDecorator (Triangulation *t)
virtual	~TriDecorator ()
virtual void	addLine (Line3D *line, bool breakline)
	Adds a line (e.g.
virtual int	addPoint (Point3D *p)
	Adds a point to the triangulation.
virtual void	addTriangulation (Triangulation *t)
	Adds an association to a triangulation.
virtual void	performConsistencyTest ()
	Performs a consistency check, remove this later.
virtual bool	calcNormal (double x, double y, Vector3D *result)
	Calculates the normal at a point on the surface and assigns it to 'result'.
virtual bool	calcPoint (double x, double y, Point3D *result)
	Calculates x-, y and z-value of the point on the surface and assigns it to 'result'.
virtual Point3D *	getPoint (unsigned int i) const
	Returns a pointer to the point with number i.
virtual int	getNumberOfPoints () const
	Returns the number of points.
bool	getTriangle (double x, double y, Point3D p1, int n1, Point3D p2, int n2, Point3D p3, int n3)
bool	getTriangle (double x, double y, Point3D p1, Point3D p2, Point3D *p3)
	Finds out, in which triangle the point with coordinates x and y is and assigns the points at the vertices to 'p1', 'p2' and 'p3.
virtual int	getOppositePoint (int p1, int p2)
	Returns the number of the point opposite to the triangle points p1, p2 (which have to be on a halfedge)
virtual QList< int > *	getSurroundingTriangles (int pointno)
	Returns a pointer to a value list with the information of the triangles surrounding (counterclockwise) a point.
virtual double	getXMax () const
	Returns the largest x-coordinate value of the bounding box.
virtual double	getXMin () const
	Returns the smallest x-coordinate value of the bounding box.
virtual double	getYMax () const
	Returns the largest y-coordinate value of the bounding box.
virtual double	getYMin () const
	Returns the smallest x-coordinate value of the bounding box.
virtual void	setForcedCrossBehaviour (Triangulation::forcedCrossBehaviour b)
	draws the points, edges and the forced lines
virtual void	setEdgeColor (int r, int g, int b)
	Sets the color of the normal edges.
virtual void	setForcedEdgeColor (int r, int g, int b)
	Sets the color of the forced edges.
virtual void	setBreakEdgeColor (int r, int g, int b)
	Sets the color of the breaklines.
virtual void	setTriangleInterpolator (TriangleInterpolator *interpolator)
	Sets an interpolator object.
virtual void	eliminateHorizontalTriangles ()
	Eliminates the horizontal triangles by swapping.
virtual void	ruppertRefinement ()
	Adds points to make the triangles better shaped (algorithm of ruppert)
virtual bool	pointInside (double x, double y)
	Returns true, if the point with coordinates x and y is inside the convex hull and false otherwise.
virtual bool	swapEdge (double x, double y)
	Reads the content of a taff-file.
virtual QList< int > *	getPointsAroundEdge (double x, double y)
	Returns a value list with the numbers of the four points, which would be affected by an edge swap.
Public Member Functions inherited from Triangulation
virtual	~Triangulation ()
virtual bool	saveAsShapefile (const QString &fileName) const =0
	Saves the triangulation as a (line) shapefile.

Protected Attributes
Triangulation *	mTIN
	Association with a Triangulation object.

Additional Inherited Members
Public Types inherited from Triangulation
enum	forcedCrossBehaviour { SnappingType_VERTICE, DELETE_FIRST, INSERT_VERTICE }
	Enumeration describing the behaviour, if two forced lines cross. More...

Detailed Description

Decorator class for Triangulations (s.

Decorator pattern in Gamma et al.)

Definition at line 23 of file TriDecorator.h.

Constructor & Destructor Documentation

TriDecorator::TriDecorator ( )

inline

Definition at line 63 of file TriDecorator.h.

TriDecorator::TriDecorator ( Triangulation * t )

inline

Definition at line 68 of file TriDecorator.h.

TriDecorator::~TriDecorator ( )

inlinevirtual

Definition at line 73 of file TriDecorator.h.

Member Function Documentation

virtual void TriDecorator::addLine	(	Line3D *	line,
		bool	breakline
	)

virtual

Adds a line (e.g.

a break-, structure- or an isoline) to the triangulation. The class takes ownership of the line object and its points

Implements Triangulation.

virtual int TriDecorator::addPoint ( Point3D * p )

virtual

Adds a point to the triangulation.

Implements Triangulation.

Reimplemented in NormVecDecorator.

void TriDecorator::addTriangulation ( Triangulation * t )

inlinevirtual

Adds an association to a triangulation.

Definition at line 78 of file TriDecorator.h.

References mTIN.

Referenced by QgsTINInterpolator::initialize().

virtual bool TriDecorator::calcNormal	(	double	x,
		double	y,
		Vector3D *	result
	)

virtual

Calculates the normal at a point on the surface and assigns it to 'result'.

Returns true in case of success and flase in case of failure

Implements Triangulation.

Reimplemented in NormVecDecorator.

virtual bool TriDecorator::calcPoint	(	double	x,
		double	y,
		Point3D *	result
	)

virtual

Calculates x-, y and z-value of the point on the surface and assigns it to 'result'.

Returns true in case of success and flase in case of failure

Implements Triangulation.

Reimplemented in NormVecDecorator.

virtual void TriDecorator::eliminateHorizontalTriangles ( )

virtual

Eliminates the horizontal triangles by swapping.

Implements Triangulation.

Reimplemented in NormVecDecorator.

virtual int TriDecorator::getNumberOfPoints ( ) const

virtual

Returns the number of points.

Implements Triangulation.

virtual int TriDecorator::getOppositePoint	(	int	p1,
		int	p2
	)

virtual

Returns the number of the point opposite to the triangle points p1, p2 (which have to be on a halfedge)

Implements Triangulation.

virtual Point3D* TriDecorator::getPoint ( unsigned int i ) const

virtual

Returns a pointer to the point with number i.

Any virtual points must have the number -1

Implements Triangulation.

virtual QList<int>* TriDecorator::getPointsAroundEdge	(	double	x,
		double	y
	)

virtual

Returns a value list with the numbers of the four points, which would be affected by an edge swap.

This function is e.g. needed by NormVecDecorator to know the points, for which the normals have to be recalculated. The list has to be deleted by the code which calls this method

Implements Triangulation.

virtual QList<int>* TriDecorator::getSurroundingTriangles ( int pointno )

virtual

Returns a pointer to a value list with the information of the triangles surrounding (counterclockwise) a point.

Four integer values describe a triangle, the first three are the number of the half edges of the triangle and the fourth is -10, if the third (and most counterclockwise) edge is a breakline, and -20 otherwise. The value list has to be deleted by the code which called the method. Any virtual point needs to have the number -1

Implements Triangulation.