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