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Program: Visualization Toolkit
Module: vtkParallelopipedRepresentation.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or for details.
This software is distributed WITHOUT ANY WARRANTY; without even
PURPOSE. See the above copyright notice for more information.
// .NAME vtkParallelopipedRepresentation - Default representation for vtkParallelopipedWidget
// .SECTION Description
// This class provides the default geometrical representation for
// vtkParallelopipedWidget. As a result of interactions of the widget, this
// representation can take on of the following shapes:
// <p>1) A parallelopiped. (8 handles, 6 faces)
// <p>2) Paralleopiped with a chair depression on any one handle. (A chair
// is a depression on one of the handles that carves inwards so as to allow
// the user to visualize cuts in the volume). (14 handles, 9 faces).
// .SECTION See Also
// vtkParallelopipedWidget
#ifndef __vtkParallelopipedRepresentation_h
#define __vtkParallelopipedRepresentation_h
#include "vtkWidgetRepresentation.h"
class vtkActor;
class vtkPlane;
class vtkPoints;
class vtkPolyData;
class vtkPolyDataMapper;
class vtkProperty;
class vtkCellArray;
class vtkTransform;
class vtkHandleRepresentation;
class vtkClosedSurfacePointPlacer;
class vtkPlaneCollection;
class vtkParallelopipedTopology;
class VTK_WIDGETS_EXPORT vtkParallelopipedRepresentation
: public vtkWidgetRepresentation
// Description:
// Instantiate the class.
static vtkParallelopipedRepresentation *New();
// Description:
// Standard methods for instances of this class.
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Methods to satisfy the superclass.
virtual void GetActors(vtkPropCollection *pc);
// Description:
// Place the widget in the scene. You can use either of the two APIs :
// 1) PlaceWidget( double bounds[6] )
// Creates a cuboid conforming to the said bounds.
// 2) PlaceWidget( double corners[8][3] )
// Creates a parallelopiped with corners specified. The order in
// which corners are specified must obey the following rule:
// Corner 0 - 1 - 2 - 3 - 0 forms a face
// Corner 4 - 5 - 6 - 7 - 4 forms a face
// Corner 0 - 4 - 5 - 1 - 0 forms a face
// Corner 1 - 5 - 6 - 2 - 1 forms a face
// Corner 2 - 6 - 7 - 3 - 2 forms a face
// Corner 3 - 7 - 4 - 0 - 3 forms a face
virtual void PlaceWidget(double corners[8][3]);
virtual void PlaceWidget(double bounds[6]);
// Description:
// The interaction state may be set from a widget (e.g., PointWidget)
// or other object. This controls how the interaction with the
// widget proceeds.
// Description:
// Get the bounding planes of the object. The first 6 planes will
// be bounding planes of the parallelopiped. If in chair mode, three
// additional planes will be present. The last three planes will be those
// of the chair. The normals of all the planes will point into the object.
void GetBoundingPlanes( vtkPlaneCollection *pc );
// Description:
// The parallelopiped polydata.
void GetPolyData(vtkPolyData *pd);
// Description:
// The parallelopiped polydata.
virtual double *GetBounds();
// Description:
// Set/Get the handle properties.
virtual void SetHandleProperty (vtkProperty *);
virtual void SetHoveredHandleProperty (vtkProperty *);
virtual void SetSelectedHandleProperty (vtkProperty *);
vtkGetObjectMacro(HandleProperty, vtkProperty );
vtkGetObjectMacro(HoveredHandleProperty, vtkProperty );
vtkGetObjectMacro(SelectedHandleProperty, vtkProperty );
void SetHandleRepresentation(vtkHandleRepresentation *handle);
vtkHandleRepresentation* GetHandleRepresentation(int index);
// Description:
// Turns the visibility of the handles on/off. Sometimes they may get in
// the way of visualization.
void HandlesOn();
void HandlesOff();
// Description:
// Get the face properties. When a face is being translated, the face gets
// highlighted with the SelectedFaceProperty.
// Description:
// Get the outline properties. These are the properties with which the
// parallelopiped wireframe is rendered.
// Description:
// This actually constructs the geometry of the widget from the various
// data parameters.
virtual void BuildRepresentation();
// Description:
// Methods required by vtkProp superclass.
virtual void ReleaseGraphicsResources(vtkWindow *w);
virtual int RenderOverlay(vtkViewport *viewport);
virtual int RenderOpaqueGeometry(vtkViewport *viewport);
// Description:
// Given and x-y display coordinate, compute the interaction state of
// the widget.
virtual int ComputeInteractionState(int X, int Y, int modify=0);
//BTX - manage the state of the widget
enum _InteractionState
Outside = 0,
// Methods to manipulate the piped.
virtual void Translate( double translation[3] );
virtual void Translate( int X, int Y );
virtual void Scale( int X, int Y );
// Description:
// Synchronize the parallelopiped handle positions with the
// Polygonal datastructure.
virtual void PositionHandles();
// Description:
// Minimum thickness for the parallelopiped. User interactions cannot make
// any individual axis of the parallopiped thinner than this value.
// Default is 0.05 expressed as a fraction of the diagonal of the bounding
// box used in the PlaceWidget() invocation.
vtkSetMacro( MinimumThickness, double );
vtkGetMacro( MinimumThickness, double );
// Description:
// Translate the nth PtId (0 <= n <= 15) by the specified amount.
void TranslatePoint( int n, const double motionVector[3] );
// Description:
// Set the highlight state of a handle.
// If handleIdx is -1, the property is applied to all handles.
void SetHandleHighlight( int handleIdx, vtkProperty *property );
// Description:
// Highlight face defined by the supplied ptids with the specified property.
void SetFaceHighlight( vtkCellArray * face, vtkProperty * );
void HighlightAllFaces();
void UnHighlightAllFaces();
// Node can be a value within [0,7]. This will create a chair one one of
// the handle corners. '0 < InitialChairDepth < 1' value dicates the starting
// depth of the cavity.
void UpdateChairAtNode( int node );
// Removes any existing chairs.
void RemoveExistingChairs();
// Convenience method to get just the planes that define the parallelopiped.
// If we aren't in chair mode, this will be the same as GetBoundingPlanes().
// If we are in chair mode, this will be the first 6 planes from amongst
// those returned by "GetBoundingPlanes".
// All planes have their normals pointing inwards.
void GetParallelopipedBoundingPlanes( vtkPlaneCollection * pc );
// Convenience method to edefine a plane passing through 3 points.
void DefinePlane( vtkPlane *, double p[3][3]);
// Convenience method to edefine a plane passing through 3 pointIds of the
// parallelopiped. The point Ids must like in the range [0,15], ie the
// 15 points comprising the parallelopiped and the chair (also modelled
// as a parallelopiped)
void DefinePlane( vtkPlane *, vtkIdType, vtkIdType, vtkIdType);
vtkActor * HexActor;
vtkPolyDataMapper * HexMapper;
vtkPolyData * HexPolyData;
vtkPoints * Points;
vtkActor * HexFaceActor;
vtkPolyDataMapper * HexFaceMapper;
vtkPolyData * HexFacePolyData;
double LastEventPosition[2];
// Cache the axis index used for face aligned resize.
int LastResizeAxisIdx;
vtkHandleRepresentation * HandleRepresentation;
vtkHandleRepresentation ** HandleRepresentations;
int CurrentHandleIdx;
int ChairHandleIdx;
// When a chair is carved out for the first time, this is the initial
// depth of the chair
double InitialChairDepth;
vtkProperty * HandleProperty;
vtkProperty * HoveredHandleProperty;
vtkProperty * FaceProperty;
vtkProperty * OutlineProperty;
vtkProperty * SelectedHandleProperty;
vtkProperty * SelectedFaceProperty;
vtkProperty * SelectedOutlineProperty;
vtkClosedSurfacePointPlacer * ChairPointPlacer;
vtkParallelopipedTopology * Topology;
double MinimumThickness;
double AbsoluteMinimumThickness;
vtkParallelopipedRepresentation(const vtkParallelopipedRepresentation&); //Not implemented
void operator=(const vtkParallelopipedRepresentation&); //Not implemented
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