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134 lines
4.7 KiB
134 lines
4.7 KiB
/*=========================================================================
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Program: Visualization Toolkit
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Module: $RCSfile: vtkSuperquadricSource.h,v $
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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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// .NAME vtkSuperquadricSource - create a polygonal superquadric centered
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// at the origin
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// .SECTION Description
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// vtkSuperquadricSource creates a superquadric (represented by polygons)
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// of specified
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// size centered at the origin. The resolution (polygonal discretization)
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// in both the latitude (phi) and longitude (theta) directions can be
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// specified. 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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// .SECTION Caveats
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// Resolution means the number of latitude or longitude lines for a complete
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// superquadric. The resolution parameters are rounded to the nearest 4
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// in phi and 8 in theta.
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//
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// Texture coordinates are not equally distributed around all superquadrics.
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//
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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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#ifndef __vtkSuperquadricSource_h
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#define __vtkSuperquadricSource_h
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#include "vtkPolyDataAlgorithm.h"
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#define VTK_MAX_SUPERQUADRIC_RESOLUTION 1024
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#define VTK_MIN_SUPERQUADRIC_THICKNESS 1e-4
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#define VTK_MIN_SUPERQUADRIC_ROUNDNESS 1e-24
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class VTK_GRAPHICS_EXPORT vtkSuperquadricSource : public vtkPolyDataAlgorithm
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{
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public:
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// Description:
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// Create a default superquadric with a radius of 0.5, non-toroidal,
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// spherical, and centered at the origin.
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static vtkSuperquadricSource *New();
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vtkTypeRevisionMacro(vtkSuperquadricSource,vtkPolyDataAlgorithm);
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void PrintSelf(ostream& os, vtkIndent indent);
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// Description:
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// Set the center of the superquadric. Default is 0,0,0.
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vtkSetVector3Macro(Center,double);
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vtkGetVectorMacro(Center,double,3);
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// Description:
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// Set the scale factors of the superquadric. Default is 1,1,1.
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vtkSetVector3Macro(Scale,double);
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vtkGetVectorMacro(Scale,double,3);
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// Description:
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// Set the number of points in the longitude direction.
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vtkGetMacro(ThetaResolution,int);
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void SetThetaResolution(int i);
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// Description:
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// Set the number of points in the latitude direction.
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vtkGetMacro(PhiResolution,int);
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void SetPhiResolution(int i);
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// Description:
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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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vtkGetMacro(Thickness,double);
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vtkSetClampMacro(Thickness,double,VTK_MIN_SUPERQUADRIC_THICKNESS,1.0);
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// Description:
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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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vtkGetMacro(PhiRoundness,double);
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void SetPhiRoundness(double e);
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// Description:
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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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vtkGetMacro(ThetaRoundness,double);
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void SetThetaRoundness(double e);
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// Description:
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// Set/Get Superquadric isotropic size.
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vtkSetMacro(Size,double);
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vtkGetMacro(Size,double);
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// Description:
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// Set/Get whether or not the superquadric is toroidal (1) or ellipsoidal (0).
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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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protected:
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vtkSuperquadricSource(int res=16);
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~vtkSuperquadricSource() {};
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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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int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
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double Center[3];
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double Scale[3];
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int ThetaResolution;
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int PhiResolution;
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private:
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vtkSuperquadricSource(const vtkSuperquadricSource&); // Not implemented.
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void operator=(const vtkSuperquadricSource&); // Not implemented.
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};
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#endif
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