QGIS API Documentation  2.99.0-Master (f867b65)
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1 /***************************************************************************
2  NormVecDecorator.h - description
3  -------------------
4  copyright : (C) 2004 by Marco Hugentobler
5  email : [email protected]
6  ***************************************************************************/
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  ***************************************************************************/
20 #include "TriDecorator.h"
21 #include "qgis_sip.h"
22 #include "qgis.h"
23 #include <TriangleInterpolator.h>
24 #include <MathUtils.h>
25 #include "qgslogger.h"
26 #include "qgis_analysis.h"
28 class QgsFeedback;
32 class ANALYSIS_EXPORT NormVecDecorator: public TriDecorator
33 {
34  public:
36  enum PointState {Normal, BreakLine, EndPoint};
39  virtual ~NormVecDecorator();
41  int addPoint( QgsPoint *p ) override;
43  bool calcNormal( double x, double y, Vector3D *result SIP_OUT ) override;
45  bool calcNormalForPoint( double x, double y, int point, Vector3D *result SIP_OUT );
47  bool calcPoint( double x, double y, QgsPoint *result SIP_OUT ) override;
49  virtual void eliminateHorizontalTriangles() override;
51  bool estimateFirstDerivative( int pointno );
53  bool estimateFirstDerivatives( QgsFeedback *feedback = nullptr );
55  Vector3D *getNormal( int n ) const;
57  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 );
59  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 );
61  PointState getState( int pointno ) const;
63  void setTriangleInterpolator( TriangleInterpolator *inter ) override;
65  virtual bool swapEdge( double x, double y ) override;
69  virtual bool saveAsShapefile( const QString &fileName ) const override;
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 };
85 #ifndef SIP_RUN
87 inline NormVecDecorator::NormVecDecorator(): TriDecorator(), mInterpolator( nullptr ), mNormVec( new QVector<Vector3D*>( DEFAULT_STORAGE_FOR_NORMALS ) ), mPointState( new QVector<PointState>( DEFAULT_STORAGE_FOR_NORMALS ) )
88 {
89  alreadyestimated = false;
90 }
93 {
94  alreadyestimated = false;
95 }
98 {
99  mInterpolator = inter;
100 }
102 inline Vector3D *NormVecDecorator::getNormal( int n ) const
103 {
104  if ( mNormVec )
105  {
106  return mNormVec->at( n );
107  }
108  else
109  {
110  QgsDebugMsg( "warning, null pointer" );
111  return nullptr;
112  }
113 }
115 #endif
117 #endif
TriangleInterpolator * mInterpolator
Association with an interpolator object.
Decorator class which adds the functionality of estimating normals at the data points.
virtual void setTriangleInterpolator(TriangleInterpolator *interpolator) override
Sets an interpolator object.
#define QgsDebugMsg(str)
Definition: qgslogger.h:37
virtual bool saveAsShapefile(const QString &fileName) const =0
Saves the triangulation as a (line) shapefile.
virtual bool swapEdge(double x, double y) override
Reads the content of a taff-file.
virtual void eliminateHorizontalTriangles() override
Eliminates the horizontal triangles by swapping.
virtual int addPoint(QgsPoint *p) override
Adds a point to the triangulation Ownership is transferred to this class.
Definition: TriDecorator.cc:32
Base class for feedback objects to be used for cancelation of something running in a worker thread...
Definition: qgsfeedback.h:43
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...
Class Vector3D represents a 3D-Vector, capable to store x-,y- and z-coordinates in double values...
Definition: Vector3D.h:29
This is an interface for interpolator classes for triangulations.
QVector< Vector3D * > * mNormVec
Vector that stores the normals for the points. If &#39;estimateFirstDerivatives()&#39; was called and there i...
virtual bool calcNormal(double x, double y, Vector3D *result) override
Calculates the normal at a point on the surface and assigns it to &#39;result&#39;.
Definition: TriDecorator.cc:58
static const unsigned int DEFAULT_STORAGE_FOR_NORMALS
Interface for Triangulation classes.
Definition: Triangulation.h:30
void setTriangleInterpolator(TriangleInterpolator *inter) override
Sets an interpolator.
Point geometry type, with support for z-dimension and m-values.
Definition: qgspoint.h:36
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...
Enumeration for the state of a point. Normal means, that the point is not on a BreakLine, BreakLine means that the point is on a breakline (but not an end point of it) and EndPoint means, that it is an endpoint of a breakline.
Decorator class for Triangulations (s.
Definition: TriDecorator.h:26
bool alreadyestimated
Is true, if the normals already have been estimated.
#define SIP_OUT
Definition: qgis_sip.h:51
virtual 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 &#39;result&#39;.
Definition: TriDecorator.cc:72
#define SIP_PYNAME(name)
Definition: qgis_sip.h:74
Vector3D * getNormal(int n) const
Returns a pointer to the normal vector for the point with the number n.