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139 lines
4.8 KiB
C++
139 lines
4.8 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkVertex.h
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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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/**
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* @class vtkVertex
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* @brief a cell that represents a 3D point
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*
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* vtkVertex is a concrete implementation of vtkCell to represent a 3D point.
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*/
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#ifndef vtkVertex_h
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#define vtkVertex_h
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#include "vtkCell.h"
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#include "vtkCommonDataModelModule.h" // For export macro
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class vtkIncrementalPointLocator;
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class VTKCOMMONDATAMODEL_EXPORT vtkVertex : public vtkCell
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{
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public:
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static vtkVertex* New();
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vtkTypeMacro(vtkVertex, vtkCell);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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/**
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* Make a new vtkVertex object with the same information as this object.
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*/
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//@{
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/**
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* See the vtkCell API for descriptions of these methods.
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*/
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int GetCellType() override { return VTK_VERTEX; }
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int GetCellDimension() override { return 0; }
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int GetNumberOfEdges() override { return 0; }
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int GetNumberOfFaces() override { return 0; }
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vtkCell* GetEdge(int) override { return nullptr; }
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vtkCell* GetFace(int) override { return nullptr; }
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void Clip(double value, vtkDataArray* cellScalars, vtkIncrementalPointLocator* locator,
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vtkCellArray* pts, vtkPointData* inPd, vtkPointData* outPd, vtkCellData* inCd, vtkIdType cellId,
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vtkCellData* outCd, int insideOut) override;
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int EvaluatePosition(const double x[3], double closestPoint[3], int& subId, double pcoords[3],
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double& dist2, double weights[]) override;
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void EvaluateLocation(int& subId, const double pcoords[3], double x[3], double* weights) override;
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double* GetParametricCoords() override;
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//@}
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/**
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* Given parametric coordinates of a point, return the closest cell
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* boundary, and whether the point is inside or outside of the cell. The
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* cell boundary is defined by a list of points (pts) that specify a vertex
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* (1D cell). If the return value of the method is != 0, then the point is
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* inside the cell.
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*/
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int CellBoundary(int subId, const double pcoords[3], vtkIdList* pts) override;
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/**
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* Generate contouring primitives. The scalar list cellScalars are
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* scalar values at each cell point. The point locator is essentially a
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* points list that merges points as they are inserted (i.e., prevents
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* duplicates).
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*/
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void Contour(double value, vtkDataArray* cellScalars, vtkIncrementalPointLocator* locator,
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vtkCellArray* verts1, vtkCellArray* lines, vtkCellArray* verts2, vtkPointData* inPd,
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vtkPointData* outPd, vtkCellData* inCd, vtkIdType cellId, vtkCellData* outCd) override;
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/**
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* Return the center of the triangle in parametric coordinates.
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*/
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int GetParametricCenter(double pcoords[3]) override;
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/**
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* Intersect with a ray. Return parametric coordinates (both line and cell)
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* and global intersection coordinates, given ray definition and tolerance.
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* The method returns non-zero value if intersection occurs.
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*/
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int IntersectWithLine(const double p1[3], const double p2[3], double tol, double& t, double x[3],
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double pcoords[3], int& subId) override;
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/**
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* Triangulate the vertex. This method fills pts and ptIds with information
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* from the only point in the vertex.
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*/
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int Triangulate(int index, vtkIdList* ptIds, vtkPoints* pts) override;
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/**
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* Get the derivative of the vertex. Returns (0.0, 0.0, 0.0) for all
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* dimensions.
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*/
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void Derivatives(
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int subId, const double pcoords[3], const double* values, int dim, double* derivs) override;
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static void InterpolationFunctions(const double pcoords[3], double weights[1]);
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static void InterpolationDerivs(const double pcoords[3], double derivs[3]);
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//@{
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/**
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* Compute the interpolation functions/derivatives
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* (aka shape functions/derivatives)
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*/
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void InterpolateFunctions(const double pcoords[3], double weights[1]) override
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{
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vtkVertex::InterpolationFunctions(pcoords, weights);
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}
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void InterpolateDerivs(const double pcoords[3], double derivs[3]) override
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{
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vtkVertex::InterpolationDerivs(pcoords, derivs);
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}
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//@}
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protected:
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vtkVertex();
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~vtkVertex() override {}
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private:
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vtkVertex(const vtkVertex&) = delete;
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void operator=(const vtkVertex&) = delete;
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};
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//----------------------------------------------------------------------------
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inline int vtkVertex::GetParametricCenter(double pcoords[3])
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{
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pcoords[0] = pcoords[1] = pcoords[2] = 0.0;
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return 0;
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}
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#endif
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