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vtkTerrainDataPointPlacer.h
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vtkTerrainDataPointPlacer.h
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/*=========================================================================
Program: Visualization Toolkit
Module: vtkTerrainDataPointPlacer.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.
=========================================================================*/
/**
* @class vtkTerrainDataPointPlacer
* @brief Place points on terrain data
*
*
* vtkTerrainDataPointPlacer dictates the placement of points on height field
* data. The class takes as input the list of props that represent the terrain
* in a rendered scene. A height offset can be specified to dicatate the
* placement of points at a certain height above the surface.
*
* @par Usage:
* A typical usage of this class is as follows:
* \code
* pointPlacer->AddProp(demActor); // the actor(s) containing the terrain.
* rep->SetPointPlacer(pointPlacer);
* pointPlacer->SetHeightOffset( 100 );
* \endcode
*
* @sa
* vtkPointPlacer vtkTerrainContourLineInterpolator
*/
#ifndef vtkTerrainDataPointPlacer_h
#define vtkTerrainDataPointPlacer_h
#include "vtkInteractionWidgetsModule.h" // For export macro
#include "vtkPointPlacer.h"
class vtkPropCollection;
class vtkProp;
class vtkPropPicker;
class VTKINTERACTIONWIDGETS_EXPORT vtkTerrainDataPointPlacer : public vtkPointPlacer
{
public:
/**
* Instantiate this class.
*/
static vtkTerrainDataPointPlacer *New();
//@{
/**
* Standard methods for instances of this class.
*/
vtkTypeMacro(vtkTerrainDataPointPlacer,vtkPointPlacer);
void PrintSelf(ostream& os, vtkIndent indent) override;
//@}
// Descuription:
// Add an actor (that represents a terrain in a rendererd scene) to the
// list. Only props in this list are considered by the PointPlacer
virtual void AddProp( vtkProp * );
virtual void RemoveAllProps();
//@{
/**
* This is the height above (or below) the terrain that the dictated
* point should be placed. Positive values indicate distances above the
* terrain; negative values indicate distances below the terrain. The
* default is 0.0.
*/
vtkSetMacro(HeightOffset,double);
vtkGetMacro(HeightOffset,double);
//@}
/**
* Given a renderer and a display position in pixel coordinates,
* compute the world position and orientation where this point
* will be placed. This method is typically used by the
* representation to place the point initially.
* For the Terrain point placer this computes world points that
* lie at the specified height above the terrain.
*/
int ComputeWorldPosition( vtkRenderer *ren,
double displayPos[2],
double worldPos[3],
double worldOrient[9] ) override;
/**
* Given a renderer, a display position, and a reference world
* position, compute the new world position and orientation
* of this point. This method is typically used by the
* representation to move the point.
*/
int ComputeWorldPosition( vtkRenderer *ren,
double displayPos[2],
double refWorldPos[3],
double worldPos[3],
double worldOrient[9] ) override;
/**
* Given a world position check the validity of this
* position according to the constraints of the placer
*/
int ValidateWorldPosition( double worldPos[3] ) override;
/**
* Given a display position, check the validity of this position.
*/
int ValidateDisplayPosition( vtkRenderer *, double displayPos[2] ) override;
/**
* Given a world position and a world orientation,
* validate it according to the constraints of the placer.
*/
int ValidateWorldPosition( double worldPos[3],
double worldOrient[9] ) override;
//@{
/**
* Get the Prop picker.
*/
vtkGetObjectMacro( PropPicker, vtkPropPicker );
//@}
protected:
vtkTerrainDataPointPlacer();
~vtkTerrainDataPointPlacer() override;
// The props that represents the terrain data (one or more) in a rendered
// scene
vtkPropCollection *TerrainProps;
vtkPropPicker *PropPicker;
double HeightOffset;
private:
vtkTerrainDataPointPlacer(const vtkTerrainDataPointPlacer&) = delete;
void operator=(const vtkTerrainDataPointPlacer&) = delete;
};
#endif