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/*=========================================================================
Program: Visualization Toolkit
Module: vtkDistanceToCamera.h
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.
=========================================================================*/
/*-------------------------------------------------------------------------
Copyright 2008 Sandia Corporation.
Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
the U.S. Government retains certain rights in this software.
-------------------------------------------------------------------------*/
/**
* @class vtkDistanceToCamera
* @brief calculates distance from points to the camera.
*
*
* This filter adds a double array containing the distance from each point
* to the camera. If Scaling is on, it will use the values in the input
* array to process in order to scale the size of the points. ScreenSize
* sets the size in screen pixels that you would want a rendered rectangle
* at that point to be, if it was scaled by the output array.
*/
#ifndef vtkDistanceToCamera_h
#define vtkDistanceToCamera_h
#include "vtkRenderingCoreModule.h" // For export macro
#include "vtkPolyDataAlgorithm.h"
class vtkRenderer;
class VTKRENDERINGCORE_EXPORT vtkDistanceToCamera : public vtkPolyDataAlgorithm
{
public:
static vtkDistanceToCamera *New();
vtkTypeMacro(vtkDistanceToCamera,vtkPolyDataAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent);
//@{
/**
* The renderer which will ultimately render these points.
*/
void SetRenderer(vtkRenderer* ren);
vtkGetObjectMacro(Renderer, vtkRenderer);
//@}
//@{
/**
* The desired screen size obtained by scaling glyphs by the distance
* array. It assumes the glyph at each point will be unit size.
*/
vtkSetMacro(ScreenSize, double);
vtkGetMacro(ScreenSize, double);
//@}
//@{
/**
* Whether to scale the distance by the input array to process.
*/
vtkSetMacro(Scaling, bool);
vtkGetMacro(Scaling, bool);
vtkBooleanMacro(Scaling, bool);
//@}
/**
* The modified time of this filter.
*/
virtual vtkMTimeType GetMTime();
protected:
vtkDistanceToCamera();
~vtkDistanceToCamera();
int RequestData(
vtkInformation *,
vtkInformationVector **,
vtkInformationVector *);
vtkRenderer* Renderer;
double ScreenSize;
bool Scaling;
int LastRendererSize[2];
double LastCameraPosition[3];
double LastCameraFocalPoint[3];
double LastCameraViewUp[3];
double LastCameraParallelScale;
private:
vtkDistanceToCamera(const vtkDistanceToCamera&) VTK_DELETE_FUNCTION;
void operator=(const vtkDistanceToCamera&) VTK_DELETE_FUNCTION;
};
#endif
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