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 
26 #ifndef vtkPointsProjectedHull_h
27 #define vtkPointsProjectedHull_h
28 
29 #include "vtkCommonDataModelModule.h" // For export macro
30 #include "vtkPoints.h"
31 
32 VTK_ABI_NAMESPACE_BEGIN
33 class VTKCOMMONDATAMODEL_EXPORT vtkPointsProjectedHull : public vtkPoints
34 {
36 
37 public:
38  void PrintSelf(ostream& os, vtkIndent indent) override;
39 
41 
48 
54  int RectangleIntersectionX(float ymin, float ymax, float zmin, float zmax);
55  int RectangleIntersectionX(double ymin, double ymax, double zmin, double zmax);
56 
62 
68  int RectangleIntersectionY(float zmin, float zmax, float xmin, float xmax);
69  int RectangleIntersectionY(double zmin, double zmax, double xmin, double xmax);
70 
76 
82  int RectangleIntersectionZ(float xmin, float xmax, float ymin, float ymax);
83  int RectangleIntersectionZ(double xmin, double xmax, double ymin, double ymax);
84 
91  int GetCCWHullX(float* pts, int len);
92  int GetCCWHullX(double* pts, int len);
93 
100  int GetCCWHullY(float* pts, int len);
101  int GetCCWHullY(double* pts, int len);
102 
109  int GetCCWHullZ(float* pts, int len);
110  int GetCCWHullZ(double* pts, int len);
111 
118 
125 
132 
133  void Initialize() override;
134  void Reset() override { this->Initialize(); }
135 
141  void Update();
142 
143 protected:
146 
147 private:
148  int RectangleIntersection(double hmin, double hmax, double vmin, double vmax, int direction);
149  int GrahamScanAlgorithm(int direction);
150  void GetPoints();
151  int RectangleBoundingBoxIntersection(
152  double hmin, double hmax, double vmin, double vmax, int direction);
153  int RectangleOutside(double hmin, double hmax, double vmin, double vmax, int direction);
154 
155  int RectangleOutside1DPolygon(double hmin, double hmax, double vmin, double vmax, int dir);
156 
157  void InitFlags();
158  void ClearAllocations();
159 
160  static int RemoveExtras(double* pts, int n);
161  static double Distance(double* p1, double* p2);
162  static vtkIdType PositionInHull(double* base, double* top, double* pt);
163  static int OutsideLine(
164  double hmin, double hmax, double vmin, double vmax, double* p0, double* p1, double* insidePt);
165  static int OutsideHorizontalLine(
166  double vmin, double vmax, double* p0, double* p1, double* insidePt);
167  static int OutsideVerticalLine(
168  double hmin, double hmax, double* p0, double* p1, double* insidePt);
169 
170  double* Pts;
171  vtkIdType Npts;
172  vtkTimeStamp PtsTime;
173 
174  double* CCWHull[3];
175  float HullBBox[3][4];
176  int HullSize[3];
177  vtkTimeStamp HullTime[3];
178 
180  void operator=(const vtkPointsProjectedHull&) = delete;
181 };
182 VTK_ABI_NAMESPACE_END
183 #endif
a simple class to control print indentation
Definition: vtkIndent.h:38
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:38
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:34
@ top
Definition: vtkX3D.h:502
@ direction
Definition: vtkX3D.h:260
@ dir
Definition: vtkX3D.h:324
int vtkIdType
Definition: vtkType.h:315