vtkEllipticalButtonSource.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkEllipticalButtonSource_h
#define vtkEllipticalButtonSource_h

#include "vtkButtonSource.h"
#include "vtkFiltersSourcesModule.h" // For export macro
#include "vtkWrappingHints.h"        // For VTK_MARSHALAUTO

VTK_ABI_NAMESPACE_BEGIN
class vtkCellArray;
class vtkFloatArray;
class vtkPoints;

class VTKFILTERSSOURCES_EXPORT VTK_MARSHALAUTO vtkEllipticalButtonSource : public vtkButtonSource
{
public:
  void PrintSelf(ostream& os, vtkIndent indent) override;
  vtkTypeMacro(vtkEllipticalButtonSource, vtkButtonSource);

  static vtkEllipticalButtonSource* New();


  vtkSetClampMacro(Width, double, 0.0, VTK_DOUBLE_MAX);
  vtkGetMacro(Width, double);


  vtkSetClampMacro(Height, double, 0.0, VTK_DOUBLE_MAX);
  vtkGetMacro(Height, double);


  vtkSetClampMacro(Depth, double, 0.0, VTK_DOUBLE_MAX);
  vtkGetMacro(Depth, double);


  vtkSetClampMacro(CircumferentialResolution, int, 4, VTK_INT_MAX);
  vtkGetMacro(CircumferentialResolution, int);


  vtkSetClampMacro(TextureResolution, int, 1, VTK_INT_MAX);
  vtkGetMacro(TextureResolution, int);


  vtkSetClampMacro(ShoulderResolution, int, 1, VTK_INT_MAX);
  vtkGetMacro(ShoulderResolution, int);


  vtkSetClampMacro(RadialRatio, double, 1.0, VTK_DOUBLE_MAX);
  vtkGetMacro(RadialRatio, double);


  vtkSetMacro(OutputPointsPrecision, int);
  vtkGetMacro(OutputPointsPrecision, int);

protected:
  vtkEllipticalButtonSource();
  ~vtkEllipticalButtonSource() override = default;

  int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;

  double Width;
  double Height;
  double Depth;
  int CircumferentialResolution;
  int TextureResolution;
  int ShoulderResolution;
  int OutputPointsPrecision;
  double RadialRatio;

private:
  // internal variable related to axes of ellipsoid
  double A;
  double A2;
  double B;
  double B2;
  double C;
  double C2;

  double ComputeDepth(int inTextureRegion, double x, double y, double n[3]);
  void InterpolateCurve(int inTextureRegion, vtkPoints* newPts, int numPts, vtkFloatArray* normals,
    vtkFloatArray* tcoords, int res, int c1StartPoint, int c1Incr, int c2StartPoint, int s2Incr,
    int startPoint, int incr);
  void CreatePolygons(vtkCellArray* newPolys, int num, int res, int startIdx);
  void IntersectEllipseWithLine(double a2, double b2, double dX, double dY, double& xe, double& ye);

  vtkEllipticalButtonSource(const vtkEllipticalButtonSource&) = delete;
  void operator=(const vtkEllipticalButtonSource&) = delete;
};

VTK_ABI_NAMESPACE_END
#endif