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123 lines
4.4 KiB
123 lines
4.4 KiB
/*=========================================================================
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Program: Visualization Toolkit
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Module: $RCSfile: vtkSphereSource.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 vtkSphereSource - create a polygonal sphere centered at the origin
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// .SECTION Description
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// vtkSphereSource creates a sphere (represented by polygons) of specified
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// radius 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. It also is possible to create partial spheres by specifying
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// maximum phi and theta angles. By default, the surface tessellation of
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// the sphere uses triangles; however you can set LatLongTessellation to
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// produce a tessellation using quadrilaterals.
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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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// sphere. If you create partial spheres the number of latitude/longitude
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// lines may be off by one.
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#ifndef __vtkSphereSource_h
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#define __vtkSphereSource_h
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#include "vtkPolyDataAlgorithm.h"
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#define VTK_MAX_SPHERE_RESOLUTION 1024
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class VTK_GRAPHICS_EXPORT vtkSphereSource : public vtkPolyDataAlgorithm
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{
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public:
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vtkTypeRevisionMacro(vtkSphereSource,vtkPolyDataAlgorithm);
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void PrintSelf(ostream& os, vtkIndent indent);
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// Description:
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// Construct sphere with radius=0.5 and default resolution 8 in both Phi
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// and Theta directions. Theta ranges from (0,360) and phi (0,180) degrees.
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static vtkSphereSource *New();
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// Description:
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// Set radius of sphere. Default is .5.
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vtkSetClampMacro(Radius,double,0.0,VTK_DOUBLE_MAX);
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vtkGetMacro(Radius,double);
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// Description:
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// Set the center of the sphere. 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 number of points in the longitude direction (ranging from
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// StartTheta to EndTheta).
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vtkSetClampMacro(ThetaResolution,int,3,VTK_MAX_SPHERE_RESOLUTION);
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vtkGetMacro(ThetaResolution,int);
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// Description:
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// Set the number of points in the latitude direction (ranging
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// from StartPhi to EndPhi).
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vtkSetClampMacro(PhiResolution,int,3,VTK_MAX_SPHERE_RESOLUTION);
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vtkGetMacro(PhiResolution,int);
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// Description:
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// Set the starting longitude angle. By default StartTheta=0 degrees.
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vtkSetClampMacro(StartTheta,double,0.0,360.0);
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vtkGetMacro(StartTheta,double);
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// Description:
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// Set the ending longitude angle. By default EndTheta=360 degrees.
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vtkSetClampMacro(EndTheta,double,0.0,360.0);
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vtkGetMacro(EndTheta,double);
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// Description:
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// Set the starting latitude angle (0 is at north pole). By default
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// StartPhi=0 degrees.
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vtkSetClampMacro(StartPhi,double,0.0,360.0);
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vtkGetMacro(StartPhi,double);
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// Description:
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// Set the ending latitude angle. By default EndPhi=180 degrees.
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vtkSetClampMacro(EndPhi,double,0.0,360.0);
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vtkGetMacro(EndPhi,double);
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// Description:
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// Cause the sphere to be tessellated with edges along the latitude
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// and longitude lines. If off, triangles are generated at non-polar
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// regions, which results in edges that are not parallel to latitude and
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// longitude lines. If on, quadrilaterals are generated everywhere
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// except at the poles. This can be useful for generating a wireframe
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// sphere with natural latitude and longitude lines.
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vtkSetMacro(LatLongTessellation,int);
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vtkGetMacro(LatLongTessellation,int);
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vtkBooleanMacro(LatLongTessellation,int);
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protected:
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vtkSphereSource(int res=8);
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~vtkSphereSource() {}
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int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
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int RequestInformation(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
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double Radius;
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double Center[3];
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int ThetaResolution;
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int PhiResolution;
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double StartTheta;
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double EndTheta;
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double StartPhi;
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double EndPhi;
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int LatLongTessellation;
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private:
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vtkSphereSource(const vtkSphereSource&); // Not implemented.
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void operator=(const vtkSphereSource&); // Not implemented.
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};
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#endif
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