Function vtkSetClampMacro

Common/DataModel/vtkPolygon.h:264–334

@{ * Specify an internal tolerance for operations requiring polygon * triangulation. (For example, clipping and contouring operations proceed * by first triangulating the polygon, and then clipping/contouring the * resulting triangles.) This is a normalized tolerance value multiplied * by the diagonal length of the polygon bounding box. Is it used to * determine whether potential

   * determine whether potential triangulation edges intersect one another.
   */
  vtkSetClampMacro(Tolerance, double, 0.0, 1.0);
  vtkGetMacro(Tolerance, double);
  ///@}

protected:
  vtkPolygon();
  ~vtkPolygon() override;

  // Compute the interpolation functions using Mean Value Coordinate.
  void InterpolateFunctionsUsingMVC(const double x[3], double* weights);

  // variables used by instances of this class
  double Tolerance;        // Intersection tolerance set by public API
  double Tol;              // Internal tolerance set by ComputeBounds()
  void ComputeTolerance(); // Compute the internal tolerance Tol

  int SuccessfulTriangulation; // Stops recursive triangulation if necessary
  vtkIdList* Tris;             // Output triangulation placed here

  // These are used for internal computation.
  vtkTriangle* Triangle;
  vtkQuad* Quad;
  vtkDoubleArray* TriScalars;
  vtkLine* Line;

  // Parameter indicating whether to use Mean Value Coordinate algorithm
  // for interpolation. The parameter is false by default.
  bool UseMVCInterpolation;

  // Helper methods for triangulation------------------------------
  // Made public for external access
public:
  // Ear cut triangulation options. The order in which vertices are
  // removed are controlled by different measures. Changing this can
  // make subtle differences in some cases. Historically the
  // PERIMETER2_TO_AREA_RATIO has been used.
  enum EarCutMeasureTypes
  {
    PERIMETER2_TO_AREA_RATIO = 0,
    DOT_PRODUCT = 1,
    BEST_QUALITY = 2
  };

  ///@{
  /**
   * A fast triangulation method. Uses recursive divide and
   * conquer based on plane splitting to reduce loop into triangles.
   * The cell (e.g., triangle) is presumed properly initialized (i.e.,
   * Points and PointIds). Ears can be removed using different measures
   * (the measures indicate convexity plus characterize the local
   * geometry around each vertex).
   */
  int EarCutTriangulation(int measure = PERIMETER2_TO_AREA_RATIO);
  int EarCutTriangulation(vtkIdList* outTris, int measure = PERIMETER2_TO_AREA_RATIO);
  ///@}

  ///@{
  /**