VTK  9.3.20240328
vtkSphere.h
Go to the documentation of this file.
1 // SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
2 // SPDX-License-Identifier: BSD-3-Clause
125 #ifndef vtkSphere_h
126 #define vtkSphere_h
127 
128 #include "vtkCommonDataModelModule.h" // For export macro
129 #include "vtkImplicitFunction.h"
130 
131 VTK_ABI_NAMESPACE_BEGIN
132 class VTKCOMMONDATAMODEL_EXPORT vtkSphere : public vtkImplicitFunction
133 {
134 public:
136  void PrintSelf(ostream& os, vtkIndent indent) override;
137 
141  static vtkSphere* New();
142 
144 
148  double EvaluateFunction(double x[3]) override;
150 
154  void EvaluateGradient(double x[3], double n[3]) override;
155 
157 
160  vtkSetMacro(Radius, double);
161  vtkGetMacro(Radius, double);
163 
165 
168  vtkSetVector3Macro(Center, double);
169  vtkGetVectorMacro(Center, double, 3);
171 
175  static double Evaluate(double center[3], double R, double x[3])
176  {
177  return (x[0] - center[0]) * (x[0] - center[0]) + (x[1] - center[1]) * (x[1] - center[1]) +
178  (x[2] - center[2]) * (x[2] - center[2]) - R * R;
179  }
180 
182 
191  float* pts, vtkIdType numPts, float sphere[4], vtkIdType hints[2]);
193  double* pts, vtkIdType numPts, double sphere[4], vtkIdType hints[2]);
195 
197 
206  float** spheres, vtkIdType numSpheres, float sphere[4], vtkIdType hints[2]);
208  double** spheres, vtkIdType numSpheres, double sphere[4], vtkIdType hints[2]);
210 
211 protected:
213  ~vtkSphere() override = default;
214 
215  double Radius;
216  double Center[3];
217 
218 private:
219  vtkSphere(const vtkSphere&) = delete;
220  void operator=(const vtkSphere&) = delete;
221 };
222 
223 VTK_ABI_NAMESPACE_END
224 #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:108
implicit function for a sphere
Definition: vtkSphere.h:133
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:175
double Radius
Definition: vtkSphere.h:215
~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