VTK  9.3.1
vtkSphere.h
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1 // SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
2 // SPDX-License-Identifier: BSD-3-Clause
16 #ifndef vtkSphere_h
17 #define vtkSphere_h
18 
19 #include "vtkCommonDataModelModule.h" // For export macro
20 #include "vtkImplicitFunction.h"
21 
22 VTK_ABI_NAMESPACE_BEGIN
23 class VTKCOMMONDATAMODEL_EXPORT vtkSphere : public vtkImplicitFunction
24 {
25 public:
27  void PrintSelf(ostream& os, vtkIndent indent) override;
28 
32  static vtkSphere* New();
33 
35 
39  double EvaluateFunction(double x[3]) override;
41 
45  void EvaluateGradient(double x[3], double n[3]) override;
46 
48 
51  vtkSetMacro(Radius, double);
52  vtkGetMacro(Radius, double);
54 
56 
59  vtkSetVector3Macro(Center, double);
60  vtkGetVectorMacro(Center, double, 3);
62 
66  static double Evaluate(double center[3], double R, double x[3])
67  {
68  return (x[0] - center[0]) * (x[0] - center[0]) + (x[1] - center[1]) * (x[1] - center[1]) +
69  (x[2] - center[2]) * (x[2] - center[2]) - R * R;
70  }
71 
73 
81  static void ComputeBoundingSphere(
82  float* pts, vtkIdType numPts, float sphere[4], vtkIdType hints[2]);
83  static void ComputeBoundingSphere(
84  double* pts, vtkIdType numPts, double sphere[4], vtkIdType hints[2]);
86 
88 
96  static void ComputeBoundingSphere(
97  float** spheres, vtkIdType numSpheres, float sphere[4], vtkIdType hints[2]);
98  static void ComputeBoundingSphere(
99  double** spheres, vtkIdType numSpheres, double sphere[4], vtkIdType hints[2]);
101 
102 protected:
103  vtkSphere();
104  ~vtkSphere() override = default;
105 
106  double Radius;
107  double Center[3];
108 
109 private:
110  vtkSphere(const vtkSphere&) = delete;
111  void operator=(const vtkSphere&) = delete;
112 };
113 
114 VTK_ABI_NAMESPACE_END
115 #endif
abstract interface for implicit functions
virtual double EvaluateFunction(double x[3])=0
Evaluate function at position x-y-z and return value.
int vtkIdType
Definition: vtkType.h:315
virtual void EvaluateGradient(double x[3], double g[3])=0
Evaluate function gradient at position x-y-z and pass back vector.
implicit function for a sphere
Definition: vtkSphere.h:23
a simple class to control print indentation
Definition: vtkIndent.h:28
double Radius
Definition: vtkSphere.h:106
static double Evaluate(double center[3], double R, double x[3])
Quick evaluation of the sphere equation ((x-x0)^2 + (y-y0)^2 + (z-z0)^2) - R^2.
Definition: vtkSphere.h:66
static vtkObject * New()
Create an object with Debug turned off, modified time initialized to zero, and reference counting on...
void PrintSelf(ostream &os, vtkIndent indent) override
Methods invoked by print to print information about the object including superclasses.