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/*=========================================================================
Program: Visualization Toolkit
Module: $RCSfile: vtkQuadric.h,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.
=========================================================================*/
// .NAME vtkQuadric - evaluate implicit quadric function
// .SECTION Description
// vtkQuadric evaluates the quadric function F(x,y,z) = a0*x^2 + a1*y^2 +
// a2*z^2 + a3*x*y + a4*y*z + a5*x*z + a6*x + a7*y + a8*z + a9. vtkQuadric is
// a concrete implementation of vtkImplicitFunction.
#ifndef __vtkQuadric_h
#define __vtkQuadric_h
#include "vtkImplicitFunction.h"
class VTK_COMMON_EXPORT vtkQuadric : public vtkImplicitFunction
{
public:
vtkTypeRevisionMacro(vtkQuadric,vtkImplicitFunction);
void PrintSelf(ostream& os, vtkIndent indent);
// Description
// Construct quadric with all coefficients = 1.
static vtkQuadric *New();
// Description
// Evaluate quadric equation.
double EvaluateFunction(double x[3]);
double EvaluateFunction(double x, double y, double z)
{return this->vtkImplicitFunction::EvaluateFunction(x, y, z); } ;
// Description
// Evaluate the gradient to the quadric equation.
void EvaluateGradient(double x[3], double g[3]);
// Description
// Set / get the 10 coefficients of the quadric equation.
void SetCoefficients(double a[10]);
void SetCoefficients(double a0, double a1, double a2, double a3, double a4,
double a5, double a6, double a7, double a8, double a9);
vtkGetVectorMacro(Coefficients,double,10);
protected:
vtkQuadric();
~vtkQuadric() {};
double Coefficients[10];
private:
vtkQuadric(const vtkQuadric&); // Not implemented.
void operator=(const vtkQuadric&); // Not implemented.
};
#endif
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