17 #ifndef DUALEDGETRIANGULATION_H 18 #define DUALEDGETRIANGULATION_H 28 #include <QTextStream> 29 #include <QMessageBox> 32 #include <QStringList> 34 #include "qgis_analysis.h" 66 double getXMax()
const override {
return xMax; }
68 double getXMin()
const override {
return xMin; }
70 double getYMax()
const override {
return yMax; }
72 double getYMin()
const override {
return yMin; }
96 bool swapEdge(
double x,
double y )
override;
112 static const unsigned int DEFAULT_STORAGE_FOR_POINTS = 100000;
116 static const unsigned int DEFAULT_STORAGE_FOR_HALF_EDGES = 300006;
132 unsigned int insertEdge(
int dual,
int next,
int point,
bool mbreak,
bool forced );
138 static const int MAX_BASE_ITERATIONS = 300000;
140 int baseEdgeOfPoint(
int point );
142 int baseEdgeOfTriangle(
const QgsPoint &point );
144 bool checkSwap(
unsigned int edge,
unsigned int recursiveDeep );
146 void doSwap(
unsigned int edge,
unsigned int recursiveDeep );
148 void doOnlySwap(
unsigned int edge );
150 unsigned int mEdgeInside = 0;
152 unsigned int mEdgeOutside = 0;
154 unsigned int mEdgeWithPoint = 0;
156 unsigned int mUnstableEdge = 0;
158 int mTwiceInsPoint = 0;
160 bool swapPossible(
unsigned int edge );
162 void triangulatePolygon( QList<int> *poly, QList<int> *free,
int mainedge );
164 bool halfEdgeBBoxTest(
int edge,
double xlowleft,
double ylowleft,
double xupright,
double yupright )
const;
166 double swapMinAngle(
int edge )
const;
168 int splitHalfEdge(
int edge,
float position );
170 bool edgeOnConvexHull(
int edge );
172 void evaluateInfluenceRegion(
QgsPoint *point,
int edge, QSet<int> &
set );
174 friend class TestQgsInterpolator;
180 : mEdgeColor( 0, 255, 0 )
181 , mForcedEdgeColor( 0, 0, 255 )
182 , mBreakEdgeColor( 100, 100, 0 )
Triangulation * mDecorator
Pointer to the decorator using this triangulation. It it is used directly, mDecorator equals this...
static const unsigned int DEFAULT_STORAGE_FOR_HALF_EDGES
Default value for the number of storable HalfEdges at the beginning.
virtual bool swapEdge(double x, double y)=0
Reads the content of a taff-file.
virtual void setBreakEdgeColor(int r, int g, int b)=0
Sets the color of the breaklines.
The status of the first inserted forced line is reset to that of a normal edge (so that the second in...
virtual void setEdgeColor(int r, int g, int b)=0
Sets the color of the normal edges.
An interface for objects which accept features via addFeature(s) methods.
QgsPoint * getPoint(int i) const override
Draws the points, edges and the forced lines.
bool halfEdgeBBoxTest(int edge, double xlowleft, double ylowleft, double xupright, double yupright) const
Tests, if the bounding box of the halfedge with index i intersects the specified bounding box...
int getNumberOfPoints() const override
Returns the number of points.
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)
SourceType
Describes the type of input data.
DualEdgeTriangulation is an implementation of a triangulation class based on the dual edge data struc...
QVector< HalfEdge * > mHalfEdge
Stores pointers to the HalfEdges.
Base class for feedback objects to be used for cancelation of something running in a worker thread...
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...
virtual QgsPoint * getPoint(int i) const =0
Returns a pointer to the point with number i. Any virtual points must have the number -1...
Class Vector3D represents a 3D-Vector, capable to store x-,y- and z-coordinates in double values...
virtual bool saveTriangulation(QgsFeatureSink *sink, QgsFeedback *feedback=nullptr) const =0
Saves the triangulation features to a feature sink.
This is an interface for interpolator classes for triangulations.
double getXMax() const override
Returns the largest x-coordinate value of the bounding box.
void setDecorator(Triangulation *d)
QColor mForcedEdgeColor
Color to paint the forced edges.
virtual int getNumberOfPoints() const =0
Returns the number of points.
virtual void setForcedEdgeColor(int r, int g, int b)=0
Sets the color of the forced edges.
virtual bool getTriangle(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...
Interface for Triangulation classes.
QColor mBreakEdgeColor
Color to paint the breaklines.
Point geometry type, with support for z-dimension and m-values.
double getXMin() const override
Returns the smallest x-coordinate value of the bounding box.
virtual int addPoint(const QgsPoint &point)=0
Adds a point to the triangulation.
virtual bool calcNormal(double x, double y, Vector3D *result)=0
Calculates the normal at a point on the surface and assigns it to 'result'.
virtual QList< int > getSurroundingTriangles(int pointno)=0
Returns a pointer to a value list with the information of the triangles surrounding (counterclockwise...
virtual QList< int > * getPointsAroundEdge(double x, double y)=0
Returns a value list with the numbers of the four points, which would be affected by an edge swap...
double getYMin() const override
Returns the smallest x-coordinate value of the bounding box.
virtual void setForcedCrossBehavior(Triangulation::ForcedCrossBehavior b)=0
Draws the points, edges and the forced lines.
QVector< QgsPoint * > mPointVector
Stores pointers to all points in the triangulations (including the points contained in the lines) ...
static const unsigned int DEFAULT_STORAGE_FOR_POINTS
Default value for the number of storable points at the beginning.
double getYMax() const override
Returns the largest y-coordinate value of the bounding box.
virtual void addLine(const QVector< QgsPoint > &points, QgsInterpolator::SourceType lineType)=0
Adds a line (e.g.
virtual void eliminateHorizontalTriangles()=0
Eliminates the horizontal triangles by swapping.
QColor mEdgeColor
Color to paint the normal edges.
virtual int getOppositePoint(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...
ForcedCrossBehavior
Enumeration describing the behavior, if two forced lines cross.
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 void setTriangleInterpolator(TriangleInterpolator *interpolator)=0
Sets an interpolator object.