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122 lines
4.0 KiB
C++
122 lines
4.0 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkPropPicker.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 vtkPropPicker
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* @brief pick an actor/prop using graphics hardware
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*
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* vtkPropPicker is used to pick an actor/prop given a selection
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* point (in display coordinates) and a renderer. This class uses
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* graphics hardware/rendering system to pick rapidly (as compared
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* to using ray casting as does vtkCellPicker and vtkPointPicker).
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* This class determines the actor/prop and pick position in world
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* coordinates; point and cell ids are not determined.
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*
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* @sa
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* vtkPicker vtkWorldPointPicker vtkCellPicker vtkPointPicker
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*/
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#ifndef vtkPropPicker_h
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#define vtkPropPicker_h
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#include "vtkAbstractPropPicker.h"
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#include "vtkRenderingCoreModule.h" // For export macro
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class vtkProp;
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class vtkWorldPointPicker;
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class VTKRENDERINGCORE_EXPORT vtkPropPicker : public vtkAbstractPropPicker
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{
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public:
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static vtkPropPicker* New();
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vtkTypeMacro(vtkPropPicker, vtkAbstractPropPicker);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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/**
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* Perform the pick and set the PickedProp ivar. If something is picked, a
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* 1 is returned, otherwise 0 is returned. Use the GetViewProp() method
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* to get the instance of vtkProp that was picked. Props are picked from
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* the renderers list of pickable Props.
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*/
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int PickProp(double selectionX, double selectionY, vtkRenderer* renderer);
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/**
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* Perform a pick from the user-provided list of vtkProps and not from the
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* list of vtkProps that the render maintains.
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*/
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int PickProp(
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double selectionX, double selectionY, vtkRenderer* renderer, vtkPropCollection* pickfrom);
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/**
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* override superclasses' Pick() method.
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*/
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int Pick(double selectionX, double selectionY, double selectionZ, vtkRenderer* renderer) override;
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int Pick(double selectionPt[3], vtkRenderer* renderer)
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{
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return this->Pick(selectionPt[0], selectionPt[1], selectionPt[2], renderer);
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}
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/**
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* Perform pick operation with selection point provided. The
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* selectionPt is in world coordinates.
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* Return non-zero if something was successfully picked.
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*/
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int Pick3DPoint(double selectionPt[3], vtkRenderer* ren) override;
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/**
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* Perform the pick and set the PickedProp ivar. If something is picked, a
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* 1 is returned, otherwise 0 is returned. Use the GetViewProp() method
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* to get the instance of vtkProp that was picked. Props are picked from
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* the renderers list of pickable Props.
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*/
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int PickProp3DPoint(double pos[3], vtkRenderer* renderer);
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/**
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* Perform a pick from the user-provided list of vtkProps and not from the
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* list of vtkProps that the render maintains.
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*/
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int PickProp3DPoint(double pos[3], vtkRenderer* renderer, vtkPropCollection* pickfrom);
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/**
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* Perform a pick from the user-provided list of vtkProps.
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*/
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virtual int PickProp3DRay(double selectionPt[3], double eventWorldOrientation[4],
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vtkRenderer* renderer, vtkPropCollection* pickfrom);
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/**
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* Perform pick operation with selection point provided. The
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* selectionPt is in world coordinates.
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* Return non-zero if something was successfully picked.
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*/
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int Pick3DRay(double selectionPt[3], double orient[4], vtkRenderer* ren) override;
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protected:
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vtkPropPicker();
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~vtkPropPicker() override;
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void Initialize() override;
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vtkPropCollection* PickFromProps;
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// Used to get x-y-z pick position
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vtkWorldPointPicker* WorldPointPicker;
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private:
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vtkPropPicker(const vtkPropPicker&) = delete;
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void operator=(const vtkPropPicker&) = delete;
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};
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#endif
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