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119 lines
3.8 KiB
C++
119 lines
3.8 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkFixedSizeHandleRepresentation.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 vtkFixedSizeHandleRepresentation
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* @brief A marker that has the same size in pixels.
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*
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*
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* This class is a concrete implementation of vtkHandleRepresentation. It is
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* meant to be used as a representation for vtkHandleWidget. Unlike the other
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* represenations, this can maintain a constant size in pixels, regardless of
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* the camera zoom parameters. The size in pixels may be set via
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* SetHandleSizeInPixels. This representation renders the markers as spherical
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* blobs in 3D space with the width as specified above, defaults to 10 pixels.
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* The handles will have the same size in pixels, give or take a certain
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* tolerance, as specified by SetHandleSizeToleranceInPixels. The tolerance
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* defaults to half a pixel. PointPlacers may be used to specify constraints on
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* the placement of markers. For instance a vtkPolygonalSurfacePointPlacer
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* will constrain placement of these spherical handles to a surface mesh.
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*
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* @sa
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* vtkHandleRepresentation vtkHandleWidget
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*/
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#ifndef vtkFixedSizeHandleRepresentation3D_h
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#define vtkFixedSizeHandleRepresentation3D_h
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#include "vtkInteractionWidgetsModule.h" // For export macro
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#include "vtkPolygonalHandleRepresentation3D.h"
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class vtkSphereSource;
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class VTKINTERACTIONWIDGETS_EXPORT vtkFixedSizeHandleRepresentation3D : public vtkPolygonalHandleRepresentation3D
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{
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public:
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/**
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* Instantiate this class.
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*/
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static vtkFixedSizeHandleRepresentation3D *New();
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//@{
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/**
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* Standard vtk methods
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*/
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vtkTypeMacro(vtkFixedSizeHandleRepresentation3D,
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vtkPolygonalHandleRepresentation3D);
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void PrintSelf(ostream& os, vtkIndent indent);
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//@}
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//@{
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/**
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* Get the object used to render the spherical handle marker
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*/
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vtkGetObjectMacro( SphereSource, vtkSphereSource );
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//@}
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//@{
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/**
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* Set/Get the required handle size in pixels. Defaults to a width of
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* 10 pixels.
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*/
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vtkSetMacro( HandleSizeInPixels, double );
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vtkGetMacro( HandleSizeInPixels, double );
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//@}
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//@{
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/**
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* Specify the acceptable handle size tolerance. During each render, the
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* handle 3D source will be updated to automatically match a display size
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* as specified by HandleSizeInPixels. This update will be done if the
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* handle size is larger than a tolerance. Default value of this
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* tolerance is half a pixel.
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*/
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vtkSetMacro( HandleSizeToleranceInPixels, double );
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vtkGetMacro( HandleSizeToleranceInPixels, double );
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//@}
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protected:
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vtkFixedSizeHandleRepresentation3D();
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~vtkFixedSizeHandleRepresentation3D();
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/**
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* Recomputes the handle world size based on the set display size.
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*/
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virtual void BuildRepresentation();
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/**
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* Convenience method to convert from world to display
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*/
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void WorldToDisplay( double w[4], double d[4] );
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/**
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* Convenience method to convert from display to world
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*/
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void DisplayToWorld( double d[4], double w[4] );
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vtkSphereSource * SphereSource;
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double HandleSizeInPixels;
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double HandleSizeToleranceInPixels;
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private:
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vtkFixedSizeHandleRepresentation3D(const vtkFixedSizeHandleRepresentation3D&) VTK_DELETE_FUNCTION;
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void operator=(const vtkFixedSizeHandleRepresentation3D&) VTK_DELETE_FUNCTION;
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};
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#endif
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