You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
128 lines
4.9 KiB
128 lines
4.9 KiB
/*=========================================================================
|
|
|
|
Program: Visualization Toolkit
|
|
Module: $RCSfile: vtkLinearExtrusionFilter.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 vtkLinearExtrusionFilter - sweep polygonal data creating a "skirt" from free edges and lines, and lines from vertices
|
|
// .SECTION Description
|
|
// vtkLinearExtrusionFilter is a modeling filter. It takes polygonal data as
|
|
// input and generates polygonal data on output. The input dataset is swept
|
|
// according to some extrusion function and creates new polygonal primitives.
|
|
// These primitives form a "skirt" or swept surface. For example, sweeping a
|
|
// line results in a quadrilateral, and sweeping a triangle creates a "wedge".
|
|
//
|
|
// There are a number of control parameters for this filter. You can
|
|
// control whether the sweep of a 2D object (i.e., polygon or triangle strip)
|
|
// is capped with the generating geometry via the "Capping" ivar. Also, you
|
|
// can extrude in the direction of a user specified vector, towards a point,
|
|
// or in the direction of vertex normals (normals must be provided - use
|
|
// vtkPolyDataNormals if necessary). The amount of extrusion is controlled by
|
|
// the "ScaleFactor" instance variable.
|
|
//
|
|
// The skirt is generated by locating certain topological features. Free
|
|
// edges (edges of polygons or triangle strips only used by one polygon or
|
|
// triangle strips) generate surfaces. This is true also of lines or
|
|
// polylines. Vertices generate lines.
|
|
//
|
|
// This filter can be used to create 3D fonts, 3D irregular bar charts,
|
|
// or to model 2 1/2D objects like punched plates. It also can be used to
|
|
// create solid objects from 2D polygonal meshes.
|
|
|
|
// .SECTION Caveats
|
|
// Some polygonal objects have no free edges (e.g., sphere). When swept,
|
|
// this will result in two separate surfaces if capping is on, or no surface
|
|
// if capping is off.
|
|
|
|
// .SECTION See Also
|
|
// vtkRotationalExtrusionFilter
|
|
|
|
#ifndef __vtkLinearExtrusionFilter_h
|
|
#define __vtkLinearExtrusionFilter_h
|
|
|
|
#include "vtkPolyDataAlgorithm.h"
|
|
|
|
class vtkDataArray;
|
|
|
|
#define VTK_VECTOR_EXTRUSION 1
|
|
#define VTK_NORMAL_EXTRUSION 2
|
|
#define VTK_POINT_EXTRUSION 3
|
|
|
|
class VTK_GRAPHICS_EXPORT vtkLinearExtrusionFilter : public vtkPolyDataAlgorithm
|
|
{
|
|
public:
|
|
vtkTypeRevisionMacro(vtkLinearExtrusionFilter,vtkPolyDataAlgorithm);
|
|
void PrintSelf(ostream& os, vtkIndent indent);
|
|
|
|
// Description:
|
|
// Create object with normal extrusion type, capping on, scale factor=1.0,
|
|
// vector (0,0,1), and extrusion point (0,0,0).
|
|
static vtkLinearExtrusionFilter *New();
|
|
|
|
// Description:
|
|
// Set/Get the type of extrusion.
|
|
vtkSetClampMacro(ExtrusionType,int,VTK_VECTOR_EXTRUSION,VTK_POINT_EXTRUSION);
|
|
vtkGetMacro(ExtrusionType,int);
|
|
void SetExtrusionTypeToVectorExtrusion()
|
|
{this->SetExtrusionType(VTK_VECTOR_EXTRUSION);};
|
|
void SetExtrusionTypeToNormalExtrusion()
|
|
{this->SetExtrusionType(VTK_NORMAL_EXTRUSION);};
|
|
void SetExtrusionTypeToPointExtrusion()
|
|
{this->SetExtrusionType(VTK_POINT_EXTRUSION);};
|
|
|
|
// Description:
|
|
// Turn on/off the capping of the skirt.
|
|
vtkSetMacro(Capping,int);
|
|
vtkGetMacro(Capping,int);
|
|
vtkBooleanMacro(Capping,int);
|
|
|
|
// Description:
|
|
// Set/Get extrusion scale factor,
|
|
vtkSetMacro(ScaleFactor,double);
|
|
vtkGetMacro(ScaleFactor,double);
|
|
|
|
// Description:
|
|
// Set/Get extrusion vector. Only needs to be set if VectorExtrusion is
|
|
// turned on.
|
|
vtkSetVector3Macro(Vector,double);
|
|
vtkGetVectorMacro(Vector,double,3);
|
|
|
|
// Description:
|
|
// Set/Get extrusion point. Only needs to be set if PointExtrusion is
|
|
// turned on. This is the point towards which extrusion occurs.
|
|
vtkSetVector3Macro(ExtrusionPoint,double);
|
|
vtkGetVectorMacro(ExtrusionPoint,double,3);
|
|
|
|
protected:
|
|
vtkLinearExtrusionFilter();
|
|
~vtkLinearExtrusionFilter() {};
|
|
|
|
virtual int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
|
|
int ExtrusionType;
|
|
int Capping;
|
|
double ScaleFactor;
|
|
double Vector[3];
|
|
double ExtrusionPoint[3];
|
|
|
|
//BTX
|
|
double *(vtkLinearExtrusionFilter::*ExtrudePoint)(double x[3], vtkIdType id,
|
|
vtkDataArray *normals);
|
|
double *ViaNormal(double x[3], vtkIdType id, vtkDataArray *normals);
|
|
double *ViaVector(double x[3], vtkIdType id, vtkDataArray *normals=0);
|
|
double *ViaPoint(double x[3], vtkIdType id, vtkDataArray *normals=0);
|
|
//ETX
|
|
|
|
private:
|
|
vtkLinearExtrusionFilter(const vtkLinearExtrusionFilter&); // Not implemented.
|
|
void operator=(const vtkLinearExtrusionFilter&); // Not implemented.
|
|
};
|
|
|
|
#endif
|
|
|