VTK  9.0.3
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 {
41 
42 public:
43  void PrintSelf(ostream& os, vtkIndent indent) override;
44 
46 
53 
59  int RectangleIntersectionX(float ymin, float ymax, float zmin, float zmax);
60  int RectangleIntersectionX(double ymin, double ymax, double zmin, double zmax);
61 
67 
73  int RectangleIntersectionY(float zmin, float zmax, float xmin, float xmax);
74  int RectangleIntersectionY(double zmin, double zmax, double xmin, double xmax);
75 
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 
123 
130 
137 
138  void Initialize() override;
139  void Reset() override { this->Initialize(); }
140 
146  void Update();
147 
148 protected:
151 
152 private:
153  int RectangleIntersection(double hmin, double hmax, double vmin, double vmax, int direction);
154  int GrahamScanAlgorithm(int direction);
155  void GetPoints();
156  int RectangleBoundingBoxIntersection(
157  double hmin, double hmax, double vmin, double vmax, int direction);
158  int RectangleOutside(double hmin, double hmax, double vmin, double vmax, int direction);
159 
160  int RectangleOutside1DPolygon(double hmin, double hmax, double vmin, double vmax, int dir);
161 
162  void InitFlags();
163  void ClearAllocations();
164 
165  static int RemoveExtras(double* pts, int n);
166  static double Distance(double* p1, double* p2);
167  static vtkIdType PositionInHull(double* base, double* top, double* pt);
168  static int OutsideLine(
169  double hmin, double hmax, double vmin, double vmax, double* p0, double* p1, double* insidePt);
170  static int OutsideHorizontalLine(
171  double vmin, double vmax, double* p0, double* p1, double* insidePt);
172  static int OutsideVerticalLine(
173  double hmin, double hmax, double* p0, double* p1, double* insidePt);
174 
175  double* Pts;
176  vtkIdType Npts;
177  vtkTimeStamp PtsTime;
178 
179  double* CCWHull[3];
180  float HullBBox[3][4];
181  int HullSize[3];
182  vtkTimeStamp HullTime[3];
183 
185  void operator=(const vtkPointsProjectedHull&) = delete;
186 };
187 #endif
a simple class to control print indentation
Definition: vtkIndent.h:34
the convex hull of the orthogonal projection of the vtkPoints in the 3 coordinate directions
int GetSizeCCWHullY()
Returns the number of points in the convex hull of the projection of the points down the positive y-a...
int GetCCWHullY(double *pts, int len)
int GetCCWHullZ(double *pts, int len)
static vtkPointsProjectedHull * New()
int RectangleIntersectionY(vtkPoints *R)
of the parallel projection along the Y axis of the points
int GetSizeCCWHullX()
Returns the number of points in the convex hull of the projection of the points down the positive x-a...
int RectangleIntersectionX(vtkPoints *R)
determine whether the resulting rectangle intersects the convex hull of the projection of the points ...
~vtkPointsProjectedHull() override
int RectangleIntersectionX(float ymin, float ymax, float zmin, float zmax)
the convex hull of the projection of the points along the positive X-axis.
int GetCCWHullZ(float *pts, int len)
Returns the coordinates (x, y) of the points in the convex hull of the projection of the points down ...
int GetCCWHullX(float *pts, int len)
Returns the coordinates (y,z) of the points in the convex hull of the projection of the points down t...
int RectangleIntersectionZ(double xmin, double xmax, double ymin, double ymax)
int RectangleIntersectionX(double ymin, double ymax, double zmin, double zmax)
void Update()
Forces recalculation of convex hulls, use this if you delete/add points.
int GetCCWHullY(float *pts, int len)
Returns the coordinates (z, x) of the points in the convex hull of the projection of the points down ...
int RectangleIntersectionY(float zmin, float zmax, float xmin, float xmax)
the convex hull of the projection of the points along the positive Y-axis.
int GetSizeCCWHullZ()
Returns the number of points in the convex hull of the projection of the points down the positive z-a...
int RectangleIntersectionZ(float xmin, float xmax, float ymin, float ymax)
the convex hull of the projection of the points along the positive Z-axis.
void Reset() override
Make object look empty but do not delete memory.
int GetCCWHullX(double *pts, int len)
int RectangleIntersectionZ(vtkPoints *R)
of the parallel projection along the Z axis of the points
void PrintSelf(ostream &os, vtkIndent indent) override
Methods invoked by print to print information about the object including superclasses.
void Initialize() override
Return object to instantiated state.
int RectangleIntersectionY(double zmin, double zmax, double xmin, double xmax)
represent and manipulate 3D points
Definition: vtkPoints.h:34
virtual void Initialize()
Return object to instantiated state.
void GetPoints(vtkIdList *ptId, vtkPoints *fp)
Given a list of pt ids, return an array of points.
record modification and/or execution time
Definition: vtkTimeStamp.h:33
@ top
Definition: vtkX3D.h:508
@ direction
Definition: vtkX3D.h:266
@ dir
Definition: vtkX3D.h:330
int vtkIdType
Definition: vtkType.h:338