VTK  9.3.0
vtkSphere.h
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1 // SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
2 // SPDX-License-Identifier: BSD-3-Clause
25 #ifndef vtkSphere_h
26 #define vtkSphere_h
27 
28 #include "vtkCommonDataModelModule.h" // For export macro
29 #include "vtkImplicitFunction.h"
30 
31 VTK_ABI_NAMESPACE_BEGIN
32 class VTKCOMMONDATAMODEL_EXPORT vtkSphere : public vtkImplicitFunction
33 {
34 public:
36  void PrintSelf(ostream& os, vtkIndent indent) override;
37 
41  static vtkSphere* New();
42 
44 
48  double EvaluateFunction(double x[3]) override;
50 
54  void EvaluateGradient(double x[3], double n[3]) override;
55 
57 
60  vtkSetMacro(Radius, double);
61  vtkGetMacro(Radius, double);
63 
65 
68  vtkSetVector3Macro(Center, double);
69  vtkGetVectorMacro(Center, double, 3);
71 
75  static double Evaluate(double center[3], double R, double x[3])
76  {
77  return (x[0] - center[0]) * (x[0] - center[0]) + (x[1] - center[1]) * (x[1] - center[1]) +
78  (x[2] - center[2]) * (x[2] - center[2]) - R * R;
79  }
80 
82 
90  static void ComputeBoundingSphere(
91  float* pts, vtkIdType numPts, float sphere[4], vtkIdType hints[2]);
92  static void ComputeBoundingSphere(
93  double* pts, vtkIdType numPts, double sphere[4], vtkIdType hints[2]);
95 
97 
106  float** spheres, vtkIdType numSpheres, float sphere[4], vtkIdType hints[2]);
108  double** spheres, vtkIdType numSpheres, double sphere[4], vtkIdType hints[2]);
110 
111 protected:
113  ~vtkSphere() override = default;
114 
115  double Radius;
116  double Center[3];
117 
118 private:
119  vtkSphere(const vtkSphere&) = delete;
120  void operator=(const vtkSphere&) = delete;
121 };
122 
123 VTK_ABI_NAMESPACE_END
124 #endif
abstract interface for implicit functions
virtual double EvaluateFunction(double x[3])=0
Evaluate function at position x-y-z and return value.
a simple class to control print indentation
Definition: vtkIndent.h:38
implicit function for a sphere
Definition: vtkSphere.h:33
void EvaluateGradient(double x[3], double n[3]) override
Evaluate sphere gradient.
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:75
double Radius
Definition: vtkSphere.h:115
~vtkSphere() override=default
static void ComputeBoundingSphere(double **spheres, vtkIdType numSpheres, double sphere[4], vtkIdType hints[2])
Create a bounding sphere from a set of spheres.
static void ComputeBoundingSphere(double *pts, vtkIdType numPts, double sphere[4], vtkIdType hints[2])
Create a bounding sphere from a set of points.
double EvaluateFunction(double x[3]) override
Evaluate sphere equation ((x-x0)^2 + (y-y0)^2 + (z-z0)^2) - R^2.
void PrintSelf(ostream &os, vtkIndent indent) override
Methods invoked by print to print information about the object including superclasses.
static vtkSphere * New()
Construct sphere with center at (0,0,0) and radius=0.5.
static void ComputeBoundingSphere(float *pts, vtkIdType numPts, float sphere[4], vtkIdType hints[2])
Create a bounding sphere from a set of points.
static void ComputeBoundingSphere(float **spheres, vtkIdType numSpheres, float sphere[4], vtkIdType hints[2])
Create a bounding sphere from a set of spheres.
@ center
Definition: vtkX3D.h:230
int vtkIdType
Definition: vtkType.h:315