VTK
vtkPointsProjectedHull.h
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1 /*=========================================================================
2 
3  Program: Visualization Toolkit
4  Module: vtkPointsProjectedHull.h
5 
6  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
7  All rights reserved.
8  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
9 
10  This software is distributed WITHOUT ANY WARRANTY; without even
11  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
12  PURPOSE. See the above copyright notice for more information.
13 
14 =========================================================================*/
15 /*----------------------------------------------------------------------------
16  Copyright (c) Sandia Corporation
17  See Copyright.txt or http://www.paraview.org/HTML/Copyright.html for details.
18 ----------------------------------------------------------------------------*/
19 
32 #ifndef vtkPointsProjectedHull_h
33 #define vtkPointsProjectedHull_h
34 
35 #include "vtkCommonDataModelModule.h" // For export macro
36 #include "vtkPoints.h"
37 
38 class VTKCOMMONDATAMODEL_EXPORT vtkPointsProjectedHull : public vtkPoints
39 {
40  vtkTypeMacro(vtkPointsProjectedHull, vtkPoints);
41 
42 public:
43  void PrintSelf(ostream& os, vtkIndent indent) override;
44 
45  static vtkPointsProjectedHull *New();
46 
52  int RectangleIntersectionX(vtkPoints *R);
53 
59  int RectangleIntersectionX(float ymin, float ymax, float zmin, float zmax);
60  int RectangleIntersectionX(double ymin, double ymax, double zmin, double zmax);
61 
66  int RectangleIntersectionY(vtkPoints *R);
67 
73  int RectangleIntersectionY(float zmin, float zmax, float xmin, float xmax);
74  int RectangleIntersectionY(double zmin, double zmax, double xmin, double xmax);
75 
80  int RectangleIntersectionZ(vtkPoints *R);
81 
87  int RectangleIntersectionZ(float xmin, float xmax, float ymin, float ymax);
88  int RectangleIntersectionZ(double xmin, double xmax, double ymin, double ymax);
89 
96  int GetCCWHullX(float *pts, int len);
97  int GetCCWHullX(double *pts, int len);
98 
105  int GetCCWHullY(float *pts, int len);
106  int GetCCWHullY(double *pts, int len);
107 
114  int GetCCWHullZ(float *pts, int len);
115  int GetCCWHullZ(double *pts, int len);
116 
122  int GetSizeCCWHullX();
123 
129  int GetSizeCCWHullY();
130 
136  int GetSizeCCWHullZ();
137 
138  void Initialize() override;
139  void Reset() override {this->Initialize();}
140 
146  void Update();
147 
148 protected:
149 
151  ~vtkPointsProjectedHull() override;
152 
153 private:
154 
155  int RectangleIntersection(double hmin, double hmax,
156  double vmin, double vmax, int direction);
157  int GrahamScanAlgorithm(int direction);
158  void GetPoints();
159  int RectangleBoundingBoxIntersection(double hmin, double hmax,
160  double vmin, double vmax, int direction);
161  int RectangleOutside(double hmin, double hmax,
162  double vmin, double vmax, int direction);
163 
164  int RectangleOutside1DPolygon(double hmin, double hmax,
165  double vmin, double vmax, int dir);
166 
167  void InitFlags();
168  void ClearAllocations();
169 
170 
171  static int RemoveExtras(double *pts, int n);
172  static double Distance(double *p1, double *p2);
173  static vtkIdType PositionInHull(double *base, double *top, double *pt);
174  static int OutsideLine(double hmin, double hmax,
175  double vmin, double vmax, double *p0, double *p1, double *insidePt);
176  static int OutsideHorizontalLine(double vmin, double vmax,
177  double *p0, double *p1, double *insidePt);
178  static int OutsideVerticalLine(double hmin, double hmax, double *p0,
179  double *p1, double *insidePt);
180 
181  double *Pts;
182  vtkIdType Npts;
183  vtkTimeStamp PtsTime;
184 
185  double *CCWHull[3];
186  float HullBBox[3][4];
187  int HullSize[3];
188  vtkTimeStamp HullTime[3];
189 
191  void operator=(const vtkPointsProjectedHull&) = delete;
192 };
193 #endif
194 
195 
vtkPoints
represent and manipulate 3D points
Definition: vtkPoints.h:39
vtkIdType
int vtkIdType
Definition: vtkType.h:349
vtkX3D::direction
Definition: vtkX3D.h:260
vtkPointsProjectedHull::Reset
void Reset() override
Make object look empty but do not delete memory.
Definition: vtkPointsProjectedHull.h:139
vtkTimeStamp
record modification and/or execution time
Definition: vtkTimeStamp.h:35
vtkPoints.h
vtkX3D::dir
Definition: vtkX3D.h:324
vtkX3D::top
Definition: vtkX3D.h:502
vtkPointsProjectedHull
the convex hull of the orthogonal projection of the vtkPoints in the 3 coordinate directions
Definition: vtkPointsProjectedHull.h:38
vtkIndent
a simple class to control print indentation
Definition: vtkIndent.h:39
vtkPoints::New
static vtkPoints * New()
vtkPoints::GetPoints
void GetPoints(vtkIdList *ptId, vtkPoints *fp)
Given a list of pt ids, return an array of points.
vtkPoints::PrintSelf
void PrintSelf(ostream &os, vtkIndent indent) override
Methods invoked by print to print information about the object including superclasses.
vtkPoints::Initialize
virtual void Initialize()
Return object to instantiated state.