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147 lines
4.3 KiB
C++
147 lines
4.3 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkSuperquadric.h
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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/**
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* @class vtkSuperquadric
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* @brief implicit function for a Superquadric
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*
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* vtkSuperquadric computes the implicit function and function gradient
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* for a superquadric. vtkSuperquadric is a concrete implementation of
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* vtkImplicitFunction. The superquadric is centered at Center and axes
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* of rotation is along the y-axis. (Use the superclass'
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* vtkImplicitFunction transformation matrix if necessary to reposition.)
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* Roundness parameters (PhiRoundness and ThetaRoundness) control
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* the shape of the superquadric. The Toroidal boolean controls whether
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* a toroidal superquadric is produced. If so, the Thickness parameter
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* controls the thickness of the toroid: 0 is the thinnest allowable
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* toroid, and 1 has a minimum sized hole. The Scale parameters allow
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* the superquadric to be scaled in x, y, and z (normal vectors are correctly
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* generated in any case). The Size parameter controls size of the
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* superquadric.
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*
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* This code is based on "Rigid physically based superquadrics", A. H. Barr,
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* in "Graphics Gems III", David Kirk, ed., Academic Press, 1992.
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*
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* @warning
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* The Size and Thickness parameters control coefficients of superquadric
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* generation, and may do not exactly describe the size of the superquadric.
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*
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*/
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#ifndef vtkSuperquadric_h
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#define vtkSuperquadric_h
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#include "vtkCommonDataModelModule.h" // For export macro
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#include "vtkImplicitFunction.h"
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#define VTK_MIN_SUPERQUADRIC_THICKNESS 1e-4
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class VTKCOMMONDATAMODEL_EXPORT vtkSuperquadric : public vtkImplicitFunction
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{
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public:
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/**
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* Construct with superquadric radius of 0.5, toroidal off, center at 0.0,
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* scale (1,1,1), size 0.5, phi roundness 1.0, and theta roundness 0.0.
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*/
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static vtkSuperquadric *New();
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vtkTypeMacro(vtkSuperquadric,vtkImplicitFunction);
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void PrintSelf(ostream& os, vtkIndent indent) VTK_OVERRIDE;
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// ImplicitFunction interface
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double EvaluateFunction(double x[3]) VTK_OVERRIDE;
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double EvaluateFunction(double x, double y, double z)
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{return this->vtkImplicitFunction::EvaluateFunction(x, y, z); } ;
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void EvaluateGradient(double x[3], double g[3]) VTK_OVERRIDE;
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//@{
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/**
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* Set the center of the superquadric. Default is 0,0,0.
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*/
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vtkSetVector3Macro(Center,double);
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vtkGetVectorMacro(Center,double,3);
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//@}
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//@{
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/**
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* Set the scale factors of the superquadric. Default is 1,1,1.
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*/
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vtkSetVector3Macro(Scale,double);
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vtkGetVectorMacro(Scale,double,3);
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//@}
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//@{
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/**
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* Set/Get Superquadric ring thickness (toroids only).
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* Changing thickness maintains the outside diameter of the toroid.
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*/
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vtkGetMacro(Thickness,double);
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vtkSetClampMacro(Thickness,double,VTK_MIN_SUPERQUADRIC_THICKNESS,1.0);
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//@}
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//@{
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/**
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* Set/Get Superquadric north/south roundness.
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* Values range from 0 (rectangular) to 1 (circular) to higher orders.
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*/
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vtkGetMacro(PhiRoundness,double);
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void SetPhiRoundness(double e);
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//@}
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//@{
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/**
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* Set/Get Superquadric east/west roundness.
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* Values range from 0 (rectangular) to 1 (circular) to higher orders.
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*/
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vtkGetMacro(ThetaRoundness,double);
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void SetThetaRoundness(double e);
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//@}
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//@{
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/**
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* Set/Get Superquadric isotropic size.
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*/
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vtkSetMacro(Size,double);
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vtkGetMacro(Size,double);
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//@}
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//@{
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/**
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* Set/Get whether or not the superquadric is toroidal (1) or ellipsoidal (0).
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*/
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vtkBooleanMacro(Toroidal,int);
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vtkGetMacro(Toroidal,int);
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vtkSetMacro(Toroidal,int);
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//@}
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protected:
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vtkSuperquadric();
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~vtkSuperquadric() VTK_OVERRIDE {}
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int Toroidal;
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double Thickness;
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double Size;
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double PhiRoundness;
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double ThetaRoundness;
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double Center[3];
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double Scale[3];
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private:
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vtkSuperquadric(const vtkSuperquadric&) VTK_DELETE_FUNCTION;
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void operator=(const vtkSuperquadric&) VTK_DELETE_FUNCTION;
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};
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#endif
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