VTK  9.3.0
vtkPointsProjectedHull.h
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1 // SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
2 // SPDX-FileCopyrightText: Copyright (c) Sandia Corporation
3 // SPDX-License-Identifier: BSD-3-Clause
4 
17 #ifndef vtkPointsProjectedHull_h
18 #define vtkPointsProjectedHull_h
19 
20 #include "vtkCommonDataModelModule.h" // For export macro
21 #include "vtkPoints.h"
22 
23 VTK_ABI_NAMESPACE_BEGIN
24 class VTKCOMMONDATAMODEL_EXPORT vtkPointsProjectedHull : public vtkPoints
25 {
27 
28 public:
29  void PrintSelf(ostream& os, vtkIndent indent) override;
30 
32 
39 
45  int RectangleIntersectionX(float ymin, float ymax, float zmin, float zmax);
46  int RectangleIntersectionX(double ymin, double ymax, double zmin, double zmax);
47 
53 
59  int RectangleIntersectionY(float zmin, float zmax, float xmin, float xmax);
60  int RectangleIntersectionY(double zmin, double zmax, double xmin, double xmax);
61 
67 
73  int RectangleIntersectionZ(float xmin, float xmax, float ymin, float ymax);
74  int RectangleIntersectionZ(double xmin, double xmax, double ymin, double ymax);
75 
82  int GetCCWHullX(float* pts, int len);
83  int GetCCWHullX(double* pts, int len);
84 
91  int GetCCWHullY(float* pts, int len);
92  int GetCCWHullY(double* pts, int len);
93 
100  int GetCCWHullZ(float* pts, int len);
101  int GetCCWHullZ(double* pts, int len);
102 
109 
116 
123 
124  void Initialize() override;
125  void Reset() override { this->Initialize(); }
126 
132  void Update();
133 
134 protected:
137 
138 private:
139  int RectangleIntersection(double hmin, double hmax, double vmin, double vmax, int direction);
140  int GrahamScanAlgorithm(int direction);
141  void GetPoints();
142  int RectangleBoundingBoxIntersection(
143  double hmin, double hmax, double vmin, double vmax, int direction);
144  int RectangleOutside(double hmin, double hmax, double vmin, double vmax, int direction);
145 
146  int RectangleOutside1DPolygon(double hmin, double hmax, double vmin, double vmax, int dir);
147 
148  void InitFlags();
149  void ClearAllocations();
150 
151  static int RemoveExtras(double* pts, int n);
152  static double Distance(double* p1, double* p2);
153  static vtkIdType PositionInHull(double* base, double* top, double* pt);
154  static int OutsideLine(
155  double hmin, double hmax, double vmin, double vmax, double* p0, double* p1, double* insidePt);
156  static int OutsideHorizontalLine(
157  double vmin, double vmax, double* p0, double* p1, double* insidePt);
158  static int OutsideVerticalLine(
159  double hmin, double hmax, double* p0, double* p1, double* insidePt);
160 
161  double* Pts;
162  vtkIdType Npts;
163  vtkTimeStamp PtsTime;
164 
165  double* CCWHull[3];
166  float HullBBox[3][4];
167  int HullSize[3];
168  vtkTimeStamp HullTime[3];
169 
171  void operator=(const vtkPointsProjectedHull&) = delete;
172 };
173 VTK_ABI_NAMESPACE_END
174 #endif
a simple class to control print indentation
Definition: vtkIndent.h:29
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:29
void GetPoints(vtkIdList *ptId, vtkPoints *outPoints)
Given a list of pt ids, return an array of points.
virtual void Initialize()
Return object to instantiated state.
record modification and/or execution time
Definition: vtkTimeStamp.h:25
@ top
Definition: vtkX3D.h:502
@ direction
Definition: vtkX3D.h:260
@ dir
Definition: vtkX3D.h:324
int vtkIdType
Definition: vtkType.h:315