VTK  9.3.0
vtkParametricRandomHills.h
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1 // SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
2 // SPDX-License-Identifier: BSD-3-Clause
35 #ifndef vtkParametricRandomHills_h
36 #define vtkParametricRandomHills_h
37 
38 #include "vtkCommonComputationalGeometryModule.h" // For export macro
39 #include "vtkParametricFunction.h"
40 
41 VTK_ABI_NAMESPACE_BEGIN
42 class vtkDoubleArray;
44 
45 class VTKCOMMONCOMPUTATIONALGEOMETRY_EXPORT vtkParametricRandomHills : public vtkParametricFunction
46 {
47 
48 public:
50  void PrintSelf(ostream& os, vtkIndent indent) override;
51 
55  int GetDimension() override { return 2; }
56 
74 
76 
80  vtkSetMacro(NumberOfHills, int);
81  vtkGetMacro(NumberOfHills, int);
83 
85 
89  vtkSetMacro(HillXVariance, double);
90  vtkGetMacro(HillXVariance, double);
92 
94 
98  vtkSetMacro(HillYVariance, double);
99  vtkGetMacro(HillYVariance, double);
101 
103 
107  vtkSetMacro(HillAmplitude, double);
108  vtkGetMacro(HillAmplitude, double);
110 
112 
118  vtkSetMacro(RandomSeed, int);
119  vtkGetMacro(RandomSeed, int);
121 
123 
136  vtkSetClampMacro(AllowRandomGeneration, vtkTypeBool, 0, 1);
137  vtkGetMacro(AllowRandomGeneration, vtkTypeBool);
138  vtkBooleanMacro(AllowRandomGeneration, vtkTypeBool);
140 
142 
146  vtkSetMacro(XVarianceScaleFactor, double);
147  vtkGetMacro(XVarianceScaleFactor, double);
149 
151 
155  vtkSetMacro(YVarianceScaleFactor, double);
156  vtkGetMacro(YVarianceScaleFactor, double);
158 
160 
164  vtkSetMacro(AmplitudeScaleFactor, double);
165  vtkGetMacro(AmplitudeScaleFactor, double);
167 
176  void Evaluate(double uvw[3], double Pt[3], double Duvw[9]) override;
177 
191  double EvaluateScalar(double uvw[3], double Pt[3], double Duvw[9]) override;
192 
193 protected:
196 
197  // Variables
207 
208  // These variables store the previous values of the above ones.
218 
219 private:
221  void operator=(const vtkParametricRandomHills&) = delete;
222 
226  void InitRNG(int RandomSeed);
227 
231  double Rand();
232 
236  vtkMinimalStandardRandomSequence* randomSequenceGenerator;
237 
244  void MakeTheHillData();
245 
249  bool ParametersChanged();
250 
254  void CopyParameters();
255 
257 
260  vtkDoubleArray* hillData;
262 };
263 
264 VTK_ABI_NAMESPACE_END
265 #endif
dynamic, self-adjusting array of double
a simple class to control print indentation
Definition: vtkIndent.h:38
Park and Miller Sequence of pseudo random numbers.
abstract interface for parametric functions
Generate a surface covered with randomly placed hills.
static vtkParametricRandomHills * New()
Construct a surface of random hills with the following parameters: MinimumU = -10,...
int GetDimension() override
Return the parametric dimension of the class.
double EvaluateScalar(double uvw[3], double Pt[3], double Duvw[9]) override
Calculate a user defined scalar using one or all of uvw, Pt, Duvw.
void PrintSelf(ostream &os, vtkIndent indent) override
Methods invoked by print to print information about the object including superclasses.
~vtkParametricRandomHills() override
void Evaluate(double uvw[3], double Pt[3], double Duvw[9]) override
Construct a terrain consisting of hills on a surface.
int vtkTypeBool
Definition: vtkABI.h:64