QGIS API Documentation  2.99.0-Master (e077efd)
Public Member Functions | Protected Attributes | List of all members
TriDecorator Class Reference

Decorator class for Triangulations (s. More...

#include <TriDecorator.h>

Inheritance diagram for TriDecorator:
Inheritance graph
[legend]

Public Member Functions

 TriDecorator ()
 
 TriDecorator (Triangulation *t)
 
virtual ~TriDecorator ()
 
virtual void addLine (Line3D *line, bool breakline) override
 Adds a line (e.g. More...
 
virtual int addPoint (Point3D *p) override
 Adds a point to the triangulation Ownership is transferred to this class. More...
 
virtual void addTriangulation (Triangulation *t)
 Adds an association to a triangulation. More...
 
virtual bool calcNormal (double x, double y, Vector3D *result) override
 Calculates the normal at a point on the surface and assigns it to 'result'. More...
 
virtual bool calcPoint (double x, double y, Point3D *result) override
 Calculates x-, y and z-value of the point on the surface and assigns it to 'result'. More...
 
virtual void eliminateHorizontalTriangles () override
 Eliminates the horizontal triangles by swapping. More...
 
virtual int getNumberOfPoints () const override
 Returns the number of points. More...
 
virtual int getOppositePoint (int p1, int p2) override
 Returns the number of the point opposite to the triangle points p1, p2 (which have to be on a halfedge) More...
 
virtual Point3DgetPoint (unsigned int i) const override
 Returns a pointer to the point with number i. Any virtual points must have the number -1. More...
 
virtual QList< int > * getPointsAroundEdge (double x, double y) override
 Returns a value list with the numbers of the four points, which would be affected by an edge swap. More...
 
virtual QList< int > * getSurroundingTriangles (int pointno) override
 Returns a pointer to a value list with the information of the triangles surrounding (counterclockwise) a point. More...
 
bool getTriangle (double x, double y, Point3D *p1, int *n1, Point3D *p2, int *n2, Point3D *p3, int *n3) override
 Finds out in which triangle the point with coordinates x and y is and assigns the numbers of the vertices to 'n1', 'n2' and 'n3' and the vertices to 'p1', 'p2' and 'p3'. More...
 
bool getTriangle (double x, double y, Point3D *p1, Point3D *p2, Point3D *p3) override
 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. More...
 
virtual double getXMax () const override
 Returns the largest x-coordinate value of the bounding box. More...
 
virtual double getXMin () const override
 Returns the smallest x-coordinate value of the bounding box. More...
 
virtual double getYMax () const override
 Returns the largest y-coordinate value of the bounding box. More...
 
virtual double getYMin () const override
 Returns the smallest x-coordinate value of the bounding box. More...
 
virtual void performConsistencyTest () override
 Performs a consistency check, remove this later. More...
 
virtual bool pointInside (double x, double y) override
 Returns true, if the point with coordinates x and y is inside the convex hull and false otherwise. More...
 
virtual void ruppertRefinement () override
 Adds points to make the triangles better shaped (algorithm of ruppert) More...
 
virtual void setBreakEdgeColor (int r, int g, int b) override
 Sets the color of the breaklines. More...
 
virtual void setEdgeColor (int r, int g, int b) override
 Sets the color of the normal edges. More...
 
virtual void setForcedCrossBehaviour (Triangulation::forcedCrossBehaviour b) override
 Draws the points, edges and the forced lines. More...
 
virtual void setForcedEdgeColor (int r, int g, int b) override
 Sets the color of the forced edges. More...
 
virtual void setTriangleInterpolator (TriangleInterpolator *interpolator) override
 Sets an interpolator object. More...
 
virtual bool swapEdge (double x, double y) override
 Reads the content of a taff-file. More...
 
- Public Member Functions inherited from Triangulation
virtual ~Triangulation ()
 
virtual bool saveAsShapefile (const QString &fileName) const =0
 Saves the triangulation as a (line) shapefile. More...
 

Protected Attributes

TriangulationmTIN
 Association with a Triangulation object. More...
 

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 24 of file TriDecorator.h.

Constructor & Destructor Documentation

§ TriDecorator() [1/2]

TriDecorator::TriDecorator ( )
inline

Definition at line 63 of file TriDecorator.h.

§ TriDecorator() [2/2]

TriDecorator::TriDecorator ( Triangulation t)
inlineexplicit

Definition at line 68 of file TriDecorator.h.

§ ~TriDecorator()

TriDecorator::~TriDecorator ( )
inlinevirtual

Definition at line 73 of file TriDecorator.h.

Member Function Documentation

§ addLine()

void TriDecorator::addLine ( Line3D line,
bool  breakline 
)
overridevirtual

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.

Definition at line 20 of file TriDecorator.cc.

§ addPoint()

int TriDecorator::addPoint ( Point3D p)
overridevirtual

Adds a point to the triangulation Ownership is transferred to this class.

Implements Triangulation.

Reimplemented in NormVecDecorator.

Definition at line 32 of file TriDecorator.cc.

§ addTriangulation()

void TriDecorator::addTriangulation ( Triangulation t)
inlinevirtual

Adds an association to a triangulation.

Definition at line 78 of file TriDecorator.h.

§ calcNormal()

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

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

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

Implements Triangulation.

Reimplemented in NormVecDecorator.

Definition at line 58 of file TriDecorator.cc.

§ calcPoint()

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

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.

Definition at line 72 of file TriDecorator.cc.

§ eliminateHorizontalTriangles()

void TriDecorator::eliminateHorizontalTriangles ( )
overridevirtual

Eliminates the horizontal triangles by swapping.

Implements Triangulation.

Reimplemented in NormVecDecorator.

Definition at line 284 of file TriDecorator.cc.

§ getNumberOfPoints()

int TriDecorator::getNumberOfPoints ( ) const
overridevirtual

Returns the number of points.

Implements Triangulation.

Definition at line 128 of file TriDecorator.cc.

§ getOppositePoint()

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

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

Implements Triangulation.

Definition at line 141 of file TriDecorator.cc.

§ getPoint()

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

Returns a pointer to the point with number i. Any virtual points must have the number -1.

Implements Triangulation.

Definition at line 86 of file TriDecorator.cc.

§ getPointsAroundEdge()

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

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.

Definition at line 336 of file TriDecorator.cc.

§ getSurroundingTriangles()

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

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.

Definition at line 155 of file TriDecorator.cc.

§ getTriangle() [1/2]

bool TriDecorator::getTriangle ( double  x,
double  y,
Point3D p1,
int *  n1,
Point3D p2,
int *  n2,
Point3D p3,
int *  n3 
)
overridevirtual

Finds out in which triangle the point with coordinates x and y is and assigns the numbers of the vertices to 'n1', 'n2' and 'n3' and the vertices to 'p1', 'p2' and 'p3'.

Implements Triangulation.

Definition at line 100 of file TriDecorator.cc.

§ getTriangle() [2/2]

bool TriDecorator::getTriangle ( double  x,
double  y,
Point3D p1,
Point3D p2,
Point3D p3 
)
overridevirtual

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.

Implements Triangulation.

Definition at line 114 of file TriDecorator.cc.

§ getXMax()

double TriDecorator::getXMax ( ) const
overridevirtual

Returns the largest x-coordinate value of the bounding box.

Implements Triangulation.

Definition at line 169 of file TriDecorator.cc.

§ getXMin()

double TriDecorator::getXMin ( ) const
overridevirtual

Returns the smallest x-coordinate value of the bounding box.

Implements Triangulation.

Definition at line 183 of file TriDecorator.cc.

§ getYMax()

double TriDecorator::getYMax ( ) const
overridevirtual

Returns the largest y-coordinate value of the bounding box.

Implements Triangulation.

Definition at line 196 of file TriDecorator.cc.

§ getYMin()

double TriDecorator::getYMin ( ) const
overridevirtual

Returns the smallest x-coordinate value of the bounding box.

Implements Triangulation.

Definition at line 210 of file TriDecorator.cc.

§ performConsistencyTest()

void TriDecorator::performConsistencyTest ( )
overridevirtual

Performs a consistency check, remove this later.

Implements Triangulation.

Definition at line 46 of file TriDecorator.cc.

§ pointInside()

bool TriDecorator::pointInside ( double  x,
double  y 
)
overridevirtual

Returns true, if the point with coordinates x and y is inside the convex hull and false otherwise.

Implements Triangulation.

Definition at line 308 of file TriDecorator.cc.

§ ruppertRefinement()

void TriDecorator::ruppertRefinement ( )
overridevirtual

Adds points to make the triangles better shaped (algorithm of ruppert)

Implements Triangulation.

Definition at line 296 of file TriDecorator.cc.

§ setBreakEdgeColor()

void TriDecorator::setBreakEdgeColor ( int  r,
int  g,
int  b 
)
overridevirtual

Sets the color of the breaklines.

Implements Triangulation.

Definition at line 260 of file TriDecorator.cc.

§ setEdgeColor()

void TriDecorator::setEdgeColor ( int  r,
int  g,
int  b 
)
overridevirtual

Sets the color of the normal edges.

Implements Triangulation.

Definition at line 236 of file TriDecorator.cc.

§ setForcedCrossBehaviour()

void TriDecorator::setForcedCrossBehaviour ( Triangulation::forcedCrossBehaviour  b)
overridevirtual

Draws the points, edges and the forced lines.

Sets the behaviour of the triangulation in case of crossing forced lines

Implements Triangulation.

Definition at line 224 of file TriDecorator.cc.

§ setForcedEdgeColor()

void TriDecorator::setForcedEdgeColor ( int  r,
int  g,
int  b 
)
overridevirtual

Sets the color of the forced edges.

Implements Triangulation.

Definition at line 248 of file TriDecorator.cc.

§ setTriangleInterpolator()

void TriDecorator::setTriangleInterpolator ( TriangleInterpolator interpolator)
overridevirtual

Sets an interpolator object.

Implements Triangulation.

Reimplemented in NormVecDecorator.

Definition at line 272 of file TriDecorator.cc.

§ swapEdge()

bool TriDecorator::swapEdge ( double  x,
double  y 
)
overridevirtual

Reads the content of a taff-file.

Saves the content to a taff file Swaps the edge which is closest to the point with x and y coordinates (if this is possible)

Implements Triangulation.

Reimplemented in NormVecDecorator.

Definition at line 322 of file TriDecorator.cc.

Member Data Documentation

§ mTIN

Triangulation* TriDecorator::mTIN
protected

Association with a Triangulation object.

Definition at line 60 of file TriDecorator.h.


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