QGIS API Documentation  3.14.0-Pi (9f7028fd23)
NormVecDecorator.h
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1 /***************************************************************************
2  NormVecDecorator.h - description
3  -------------------
4  copyright : (C) 2004 by Marco Hugentobler
5  email : [email protected]
6  ***************************************************************************/
7
8 /***************************************************************************
9  * *
10  * This program is free software; you can redistribute it and/or modify *
12  * the Free Software Foundation; either version 2 of the License, or *
13  * (at your option) any later version. *
14  * *
15  ***************************************************************************/
16
17 #ifndef NORMVECDECORATOR_H
18 #define NORMVECDECORATOR_H
19
20 #include "TriDecorator.h"
21 #include "qgis_sip.h"
22 #include "TriangleInterpolator.h"
23 #include "MathUtils.h"
24 #include "qgslogger.h"
25 #include "qgis_analysis.h"
26
27 #define SIP_NO_FILE
28
29 class QgsFeedback;
30
36 class ANALYSIS_EXPORT NormVecDecorator: public TriDecorator
37 {
38  public:
40  enum PointState {Normal, BreakLine, EndPoint};
43  ~NormVecDecorator() override;
44  int addPoint( const QgsPoint &p ) override;
46  bool calcNormal( double x, double y, Vector3D *result SIP_OUT ) override;
48  bool calcNormalForPoint( double x, double y, int point, Vector3D *result SIP_OUT );
49  bool calcPoint( double x, double y, QgsPoint &result SIP_OUT ) override;
51  void eliminateHorizontalTriangles() override;
53  bool estimateFirstDerivative( int pointno );
55  bool estimateFirstDerivatives( QgsFeedback *feedback = nullptr );
57  Vector3D *getNormal( int n ) const;
59  bool getTriangle( double x, double y, QgsPoint &p1 SIP_OUT, Vector3D *v1 SIP_OUT, QgsPoint &p2 SIP_OUT, Vector3D *v2 SIP_OUT, QgsPoint &p3 SIP_OUT, Vector3D *v3 SIP_OUT ) SIP_PYNAME( getTriangleVertices );
61  bool getTriangle( double x, double y, QgsPoint &p1 SIP_OUT, int &ptn1 SIP_OUT, Vector3D *v1 SIP_OUT, PointState *state1 SIP_OUT, QgsPoint &p2 SIP_OUT, int &ptn2 SIP_OUT, Vector3D *v2 SIP_OUT, PointState *state2 SIP_OUT, QgsPoint &p3 SIP_OUT, int &ptn3 SIP_OUT, Vector3D *v3 SIP_OUT, PointState *state3 SIP_OUT );
63  PointState getState( int pointno ) const;
65  void setTriangleInterpolator( TriangleInterpolator *inter ) override;
67  bool swapEdge( double x, double y ) override;
68
69  bool saveTriangulation( QgsFeatureSink *sink, QgsFeedback *feedback = nullptr ) const override;
70
71  protected:
74  static const unsigned int DEFAULT_STORAGE_FOR_NORMALS = 100000;
76  TriangleInterpolator *mInterpolator = nullptr;
78  QVector<Vector3D *> *mNormVec;
80  QVector<PointState> *mPointState;
82  void setState( int pointno, PointState s );
83
84  private:
85  NormVecDecorator( const NormVecDecorator & ) = delete;
86  NormVecDecorator &operator=( const NormVecDecorator & ) = delete;
87 };
88
89 #ifndef SIP_RUN
90
92  : mNormVec( new QVector<Vector3D*>( DEFAULT_STORAGE_FOR_NORMALS ) )
93  , mPointState( new QVector<PointState>( DEFAULT_STORAGE_FOR_NORMALS ) )
94 {
96 }
97
99  : TriDecorator( tin )
100  , mNormVec( new QVector<Vector3D*>( DEFAULT_STORAGE_FOR_NORMALS ) )
101  , mPointState( new QVector<PointState>( DEFAULT_STORAGE_FOR_NORMALS ) )
102 {
104 }
105
107 {
108  mInterpolator = inter;
109 }
110
111 inline Vector3D *NormVecDecorator::getNormal( int n ) const
112 {
113  if ( mNormVec )
114  {
115  return mNormVec->at( n );
116  }
117  else
118  {
119  QgsDebugMsg( QStringLiteral( "warning, null pointer" ) );
120  return nullptr;
121  }
122 }
123
124 #endif
125
126 #endif
Triangulation::saveTriangulation
virtual bool saveTriangulation(QgsFeatureSink *sink, QgsFeedback *feedback=nullptr) const =0
Saves the triangulation features to a feature sink.
SIP_PYNAME
#define SIP_PYNAME(name)
Definition: qgis_sip.h:81
TriDecorator::eliminateHorizontalTriangles
void eliminateHorizontalTriangles() override
Eliminates the horizontal triangles by swapping.
Definition: TriDecorator.cpp:282
TriDecorator
Definition: TriDecorator.h:31
Is true, if the normals already have been estimated.
Definition: NormVecDecorator.h:73
MathUtils.h
QgsPoint
Point geometry type, with support for z-dimension and m-values.
Definition: qgspoint.h:37
SIP_OUT
#define SIP_OUT
Definition: qgis_sip.h:58
Triangulation
Definition: Triangulation.h:38
Adds a point to the triangulation.
Definition: TriDecorator.cpp:32
QgsDebugMsg
#define QgsDebugMsg(str)
Definition: qgslogger.h:38
NormVecDecorator::getNormal
Vector3D * getNormal(int n) const
Returns a pointer to the normal vector for the point with the number n.
Definition: NormVecDecorator.h:111
NormVecDecorator::NormVecDecorator
NormVecDecorator()
Definition: NormVecDecorator.h:91
NormVecDecorator::mPointState
QVector< PointState > * mPointState
Vector who stores, it a point is not on a breakline, if it is a normal point of the breakline or if i...
Definition: NormVecDecorator.h:80
QgsFeedback
Definition: qgsfeedback.h:43
qgis_sip.h
TriDecorator::setTriangleInterpolator
void setTriangleInterpolator(TriangleInterpolator *interpolator) override
Sets an interpolator object.
Definition: TriDecorator.cpp:270
TriDecorator::calcPoint
bool calcPoint(double x, double y, QgsPoint &result) override
Calculates x-, y and z-value of the point on the surface and assigns it to 'result'.
Definition: TriDecorator.cpp:72
TriDecorator::swapEdge
bool swapEdge(double x, double y) override
Reads the content of a taff-file.
Definition: TriDecorator.cpp:320
NormVecDecorator::mNormVec
QVector< Vector3D * > * mNormVec
Vector that stores the normals for the points. If 'estimateFirstDerivatives()' was called and there i...
Definition: NormVecDecorator.h:78
NormVecDecorator::mInterpolator
TriangleInterpolator * mInterpolator
Association with an interpolator object.
Definition: NormVecDecorator.h:76
TriangleInterpolator.h
NormVecDecorator::setTriangleInterpolator
void setTriangleInterpolator(TriangleInterpolator *inter) override
Sets an interpolator.
Definition: NormVecDecorator.h:106
qgslogger.h
Vector3D
Definition: Vector3D.h:33
TriDecorator::getTriangle
bool getTriangle(double x, double y, QgsPoint &p1, int &n1, QgsPoint &p2, int &n2, QgsPoint &p3, int &n3) override
Finds out in which triangle the point with coordinates x and y is and assigns the numbers of the vert...
Definition: TriDecorator.cpp:100
TriDecorator.h
NormVecDecorator::PointState
PointState
Enumeration for the state of a point. Normal means, that the point is not on a BreakLine,...
Definition: NormVecDecorator.h:40
TriDecorator::calcNormal
bool calcNormal(double x, double y, Vector3D *result) override
Calculates the normal at a point on the surface and assigns it to 'result'.
Definition: TriDecorator.cpp:58
QgsFeatureSink
Definition: qgsfeaturesink.h:33
NormVecDecorator
Definition: NormVecDecorator.h:36
TriangleInterpolator
Definition: TriangleInterpolator.h:34