QGIS API Documentation  3.21.0-Master (5b68dc587e)
TriDecorator.h
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1 /***************************************************************************
2  TriDecorator.h - description
3  -------------------
4  copyright : (C) 2004 by Marco Hugentobler
5  email : [email protected].unizh.ch
6  ***************************************************************************/
7 
8 /***************************************************************************
9  * *
10  * This program is free software; you can redistribute it and/or modify *
11  * it under the terms of the GNU General Public License as published by *
12  * the Free Software Foundation; either version 2 of the License, or *
13  * (at your option) any later version. *
14  * *
15  ***************************************************************************/
16 
17 #ifndef TRIDECORATOR_H
18 #define TRIDECORATOR_H
19 
20 #include "qgstriangulation.h"
21 #include "qgis_sip.h"
22 #include "qgis_analysis.h"
23 
24 #define SIP_NO_FILE
25 
31 class ANALYSIS_EXPORT TriDecorator : public QgsTriangulation
32 {
33  public:
35  TriDecorator() = default;
37  explicit TriDecorator( QgsTriangulation *t );
38  void addLine( const QVector< QgsPoint> &points, QgsInterpolator::SourceType lineType ) override;
39  int addPoint( const QgsPoint &p ) override;
41  virtual void addTriangulation( QgsTriangulation *t );
43  void performConsistencyTest() override;
44  bool calcNormal( double x, double y, QgsPoint &result SIP_OUT ) override;
45  bool calcPoint( double x, double y, QgsPoint &result SIP_OUT ) override;
46  QgsPoint *point( int i ) const override;
47  int pointsCount() const override;
48  bool triangleVertices( double x, double y, QgsPoint &p1 SIP_OUT, int &n1 SIP_OUT, QgsPoint &p2 SIP_OUT, int &n2 SIP_OUT, QgsPoint &p3 SIP_OUT, int &n3 SIP_OUT ) override;
49  bool triangleVertices( double x, double y, QgsPoint &p1 SIP_OUT, QgsPoint &p2 SIP_OUT, QgsPoint &p3 SIP_OUT ) override;
50  int oppositePoint( int p1, int p2 ) override;
51  QList<int> surroundingTriangles( int pointno ) override;
52  double xMax() const override;
53  double xMin() const override;
54  double yMax() const override;
55  double yMin() const override;
57  void setTriangleInterpolator( TriangleInterpolator *interpolator ) override;
58  void eliminateHorizontalTriangles() override;
59  void ruppertRefinement() override;
60  bool pointInside( double x, double y ) override;
61  bool swapEdge( double x, double y ) override;
62  QList<int> pointsAroundEdge( double x, double y ) override;
63  protected:
65  QgsTriangulation *mTIN = nullptr;
66 };
67 
68 #ifndef SIP_RUN
69 
71  : mTIN( t )
72 {
73 
74 }
75 
77 {
78  mTIN = t;
79 }
80 
81 #endif
82 #endif
83 
SourceType
Describes the type of input data.
Point geometry type, with support for z-dimension and m-values.
Definition: qgspoint.h:49
Interface for Triangulation classes.
virtual QgsPoint * point(int i) const =0
Returns a pointer to the point with number i.
virtual bool calcNormal(double x, double y, QgsPoint &result)=0
Calculates the normal at a point on the surface and assigns it to 'result'.
virtual double yMax() const =0
Returns the largest y-coordinate value of the bounding box.
virtual void eliminateHorizontalTriangles()=0
Eliminates the horizontal triangles by swapping.
virtual void performConsistencyTest()=0
Performs a consistency check, remove this later.
virtual void ruppertRefinement()=0
Adds points to make the triangles better shaped (algorithm of ruppert)
virtual int pointsCount() const =0
Returns the number of points.
virtual double xMax() const =0
Returns the largest x-coordinate value of the bounding box.
virtual double yMin() const =0
Returns the smallest x-coordinate value of the bounding box.
virtual QList< int > surroundingTriangles(int pointno)=0
Returns a value list with the information of the triangles surrounding (counterclockwise) a point.
ForcedCrossBehavior
Enumeration describing the behavior, if two forced lines cross.
virtual void addLine(const QgsPointSequence &points, QgsInterpolator::SourceType lineType)=0
Adds a line (e.g.
virtual bool calcPoint(double x, double y, QgsPoint &result)=0
Calculates x-, y and z-value of the point on the surface and assigns it to 'result'.
virtual int oppositePoint(int p1, int p2)=0
Returns the number of the point opposite to the triangle points p1, p2 (which have to be on a halfedg...
virtual int addPoint(const QgsPoint &point)=0
Adds a point to the triangulation.
virtual bool swapEdge(double x, double y)=0
Reads the content of a taff-file.
virtual QList< int > pointsAroundEdge(double x, double y)=0
Returns a value list with the numbers of the four points, which would be affected by an edge swap.
virtual void setTriangleInterpolator(TriangleInterpolator *interpolator)=0
Sets an interpolator object.
virtual bool triangleVertices(double x, double y, QgsPoint &p1, int &n1, QgsPoint &p2, int &n2, QgsPoint &p3, int &n3)=0
Finds out in which triangle the point with coordinates x and y is and assigns the numbers of the vert...
virtual double xMin() const =0
Returns the smallest x-coordinate value of the bounding box.
virtual void setForcedCrossBehavior(QgsTriangulation::ForcedCrossBehavior b)=0
Draws the points, edges and the forced lines.
virtual bool pointInside(double x, double y)=0
Returns true, if the point with coordinates x and y is inside the convex hull and false otherwise.
Decorator class for Triangulations (s.
Definition: TriDecorator.h:32
virtual void addTriangulation(QgsTriangulation *t)
Adds an association to a triangulation.
Definition: TriDecorator.h:76
QgsTriangulation * mTIN
Association with a Triangulation object.
Definition: TriDecorator.h:65
TriDecorator()=default
Constructor for TriDecorator.
This is an interface for interpolator classes for triangulations.
#define SIP_OUT
Definition: qgis_sip.h:58