QGIS API Documentation  2.99.0-Master (e077efd)
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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 <TriangleInterpolator.h>
22 #include <MathUtils.h>
23 #include "qgslogger.h"
25 class QProgressDialog;
29 class ANALYSIS_EXPORT NormVecDecorator: public TriDecorator
30 {
31  public:
33  enum pointState {NORMAL, BREAKLINE, ENDPOINT};
36  virtual ~NormVecDecorator();
38  int addPoint( Point3D* p ) override;
40  bool calcNormal( double x, double y, Vector3D* result ) override;
42  bool calcNormalForPoint( double x, double y, int point, Vector3D* result );
44  bool calcPoint( double x, double y, Point3D* result ) override;
46  virtual void eliminateHorizontalTriangles() override;
48  bool estimateFirstDerivative( int pointno );
50  bool estimateFirstDerivatives( QProgressDialog* d = nullptr );
52  Vector3D* getNormal( int n ) const;
54  bool getTriangle( double x, double y, Point3D* p1, Vector3D* v1, Point3D* p2, Vector3D* v2, Point3D* p3, Vector3D* v3 );
59  bool getTriangle( double x, double y, Point3D* p1, int* ptn1, Vector3D* v1, pointState* state1, Point3D* p2, int* ptn2, Vector3D* v2, pointState* state2, Point3D* p3, int* ptn3, Vector3D* v3, pointState* state3 );
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  const static unsigned int mDefaultStorageForNormals = 100000;
78  QVector<Vector3D*>* mNormVec;
80  QVector<pointState>* mPointState;
82  void setState( int pointno, pointState s );
83 };
85 inline NormVecDecorator::NormVecDecorator(): TriDecorator(), mInterpolator( nullptr ), mNormVec( new QVector<Vector3D*>( mDefaultStorageForNormals ) ), mPointState( new QVector<pointState>( mDefaultStorageForNormals ) )
86 {
87  alreadyestimated = false;
88 }
91 {
92  alreadyestimated = false;
93 }
96 {
97  mInterpolator = inter;
98 }
100 inline Vector3D* NormVecDecorator::getNormal( int n ) const
101 {
102  if ( mNormVec )
103  {
104  return mNormVec->at( n );
105  }
106  else
107  {
108  QgsDebugMsg( "warning, null pointer" );
109  return nullptr;
110  }
111 }
113 #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:33
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.
static const unsigned int mDefaultStorageForNormals
virtual void eliminateHorizontalTriangles() override
Eliminates the horizontal triangles by swapping.
QVector< Vector3D * > * mNormVec
Vector that stores the normals for the points. If &#39;estimateFirstDerivatives()&#39; was called and there i...
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...
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 &#39;result&#39;.
Definition: TriDecorator.cc:72
Point3D is a class to represent a three dimensional point.
Definition: Point3D.h:24
Class Vector3D represents a 3D-Vector, capable to store x-,y- and z-coordinates in double values...
Definition: Vector3D.h:28
This is an interface for interpolator classes for triangulations.
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
Interface for Triangulation classes.
Definition: Triangulation.h:28
void setTriangleInterpolator(TriangleInterpolator *inter) override
Sets an interpolator.
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 endpoint of it) and ENDPOINT means, that it is an endpoint of a breakline.
Decorator class for Triangulations (s.
Definition: TriDecorator.h:24
bool alreadyestimated
Is true, if the normals already have been estimated.
virtual int addPoint(Point3D *p) override
Adds a point to the triangulation Ownership is transferred to this class.
Definition: TriDecorator.cc:32
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 vert...
Vector3D * getNormal(int n) const
Returns a pointer to the normal vector for the point with the number n.