You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
88 lines
2.6 KiB
88 lines
2.6 KiB
2 years ago
|
/*=========================================================================
|
||
|
|
|
||
|
|
Program: Visualization Toolkit
|
||
|
|
Module: $RCSfile: vtkParametricTorus.cxx,v $
|
||
|
|
|
||
|
|
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
|
||
|
|
All rights reserved.
|
||
|
|
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
|
||
|
|
|
||
|
|
This software is distributed WITHOUT ANY WARRANTY; without even
|
||
|
|
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
||
|
|
PURPOSE. See the above copyright notice for more information.
|
||
|
|
|
||
|
|
=========================================================================*/
|
||
|
|
#include "vtkParametricTorus.h"
|
||
|
|
#include "vtkObjectFactory.h"
|
||
|
|
#include "vtkMath.h"
|
||
|
|
|
||
|
|
vtkCxxRevisionMacro(vtkParametricTorus, "$Revision: 1.3 $");
|
||
|
|
vtkStandardNewMacro(vtkParametricTorus);
|
||
|
|
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
vtkParametricTorus::vtkParametricTorus() :
|
||
|
|
RingRadius(1.0), CrossSectionRadius(0.5)
|
||
|
|
{
|
||
|
|
this->MinimumU = 0;
|
||
|
|
this->MinimumV = 0;
|
||
|
|
this->MaximumU = 2 * vtkMath::Pi();
|
||
|
|
this->MaximumV = 2 * vtkMath::Pi();
|
||
|
|
|
||
|
|
this->JoinU = 1;
|
||
|
|
this->JoinV = 1;
|
||
|
|
this->TwistU = 0;
|
||
|
|
this->TwistV = 0;
|
||
|
|
this->ClockwiseOrdering = 1;
|
||
|
|
this->DerivativesAvailable = 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
vtkParametricTorus::~vtkParametricTorus()
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
void vtkParametricTorus::Evaluate(double uvw[3], double Pt[3], double Duvw[9])
|
||
|
|
{
|
||
|
|
double u = uvw[0];
|
||
|
|
double v = uvw[1];
|
||
|
|
double *Du = Duvw;
|
||
|
|
double *Dv = Duvw + 3;
|
||
|
|
|
||
|
|
double cu = cos(u);
|
||
|
|
double su = sin(u);
|
||
|
|
double cv = cos(v);
|
||
|
|
double sv = sin(v);
|
||
|
|
double t = this->RingRadius + this->CrossSectionRadius * cv;
|
||
|
|
|
||
|
|
// The point
|
||
|
|
Pt[0] = t * cu;
|
||
|
|
Pt[1] = t * su;
|
||
|
|
Pt[2] = this->CrossSectionRadius * sv;
|
||
|
|
|
||
|
|
//The derivatives are:
|
||
|
|
Du[0] = -t * su;
|
||
|
|
Du[1] = t * cu;
|
||
|
|
Du[2] = 0;
|
||
|
|
Dv[0] = -this->CrossSectionRadius * sv * cu;
|
||
|
|
Dv[1] = -this->CrossSectionRadius * sv * su;
|
||
|
|
Dv[2] = this->CrossSectionRadius * cv;
|
||
|
|
}
|
||
|
|
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
double vtkParametricTorus::EvaluateScalar(double* vtkNotUsed(uv[3]),
|
||
|
|
double* vtkNotUsed(Pt[3]),
|
||
|
|
double* vtkNotUsed(Duv[9]))
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
void vtkParametricTorus::PrintSelf(ostream& os, vtkIndent indent)
|
||
|
|
{
|
||
|
|
this->Superclass::PrintSelf(os,indent);
|
||
|
|
|
||
|
|
os << indent << "Ring Radius: " << this->RingRadius << "\n";
|
||
|
|
os << indent << "Cross-Sectional Radius: " << this->CrossSectionRadius << "\n";
|
||
|
|
}
|