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95 lines
3.6 KiB
95 lines
3.6 KiB
/*=========================================================================
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Program: Visualization Toolkit
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Module: $RCSfile: vtkTriangleStrip.h,v $
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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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// .NAME vtkTriangleStrip - a cell that represents a triangle strip
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// .SECTION Description
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// vtkTriangleStrip is a concrete implementation of vtkCell to represent a 2D
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// triangle strip. A triangle strip is a compact representation of triangles
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// connected edge to edge in strip fashion. The connectivity of a triangle
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// strip is three points defining an initial triangle, then for each
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// additional triangle, a single point that, combined with the previous two
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// points, defines the next triangle.
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#ifndef __vtkTriangleStrip_h
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#define __vtkTriangleStrip_h
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#include "vtkCell.h"
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class vtkLine;
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class vtkTriangle;
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class VTK_FILTERING_EXPORT vtkTriangleStrip : public vtkCell
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{
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public:
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static vtkTriangleStrip *New();
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vtkTypeRevisionMacro(vtkTriangleStrip,vtkCell);
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void PrintSelf(ostream& os, vtkIndent indent);
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// Description:
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// See the vtkCell API for descriptions of these methods.
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int GetCellType() {return VTK_TRIANGLE_STRIP;};
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int GetCellDimension() {return 2;};
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int GetNumberOfEdges() {return this->GetNumberOfPoints();};
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int GetNumberOfFaces() {return 0;};
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vtkCell *GetEdge(int edgeId);
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vtkCell *GetFace(int vtkNotUsed(faceId)) {return 0;};
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int CellBoundary(int subId, double pcoords[3], vtkIdList *pts);
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void Contour(double value, vtkDataArray *cellScalars,
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vtkPointLocator *locator, vtkCellArray *verts,
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vtkCellArray *lines, vtkCellArray *polys,
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vtkPointData *inPd, vtkPointData *outPd,
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vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd);
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void Clip(double value, vtkDataArray *cellScalars,
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vtkPointLocator *locator, vtkCellArray *polys,
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vtkPointData *inPd, vtkPointData *outPd,
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vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd,
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int insideOut);
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int EvaluatePosition(double x[3], double* closestPoint,
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int& subId, double pcoords[3],
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double& dist2, double *weights);
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void EvaluateLocation(int& subId, double pcoords[3], double x[3],
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double *weights);
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int IntersectWithLine(double p1[3], double p2[3], double tol, double& t,
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double x[3], double pcoords[3], int& subId);
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int Triangulate(int index, vtkIdList *ptIds, vtkPoints *pts);
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void Derivatives(int subId, double pcoords[3], double *values,
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int dim, double *derivs);
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int IsPrimaryCell() {return 0;}
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// Description:
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// Return the center of the point cloud in parametric coordinates.
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int GetParametricCenter(double pcoords[3]);
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// Description:
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// Given a triangle strip, decompose it into a list of (triangle)
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// polygons. The polygons are appended to the end of the list of triangles.
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static void DecomposeStrip(int npts, vtkIdType *pts, vtkCellArray *tris);
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protected:
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vtkTriangleStrip();
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~vtkTriangleStrip();
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vtkLine *Line;
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vtkTriangle *Triangle;
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private:
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vtkTriangleStrip(const vtkTriangleStrip&); // Not implemented.
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void operator=(const vtkTriangleStrip&); // Not implemented.
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};
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#endif
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