IlvMakeFilledSplineInteractor Class Reference

Manager interactor class. More...

#include <ilviews/manager/mkpolyin.h>

Inheritance diagram for IlvMakeFilledSplineInteractor:

Public Member Functions
	IlvMakeFilledSplineInteractor (IlvManager *manager, IlvView *view)
	Constructor. More...
void	commit (IlBoolean removeExtraPoints)
virtual void	doIt (IlUInt count, IlvPoint *points)
	Finalizes the interaction by creating an IlvFilledSpline object. More...
virtual void	drawGhost ()
	Visual feedback during interaction. More...
void	react (IlvPoint &p, IlUShort modifier=0)
	Ensures the Bezier spline stays continuously derivable as new points are entered. More...
Public Member Functions inherited from IlvMakeSplineInteractor
	IlvMakeSplineInteractor (IlvManager *manager, IlvView *view)
	Constructor. More...
IlBoolean	accept (IlvPoint &p)
	Lets the interactor accept or refuse a new point location. More...
IlBoolean	displayIntermediatePoints ()
void	displayIntermediatePoints (IlBoolean d)
virtual void	drawHull ()
	draws the control points of the Bezier curve. More...
Public Member Functions inherited from IlvMakePolyPointsInteractor
	IlvMakePolyPointsInteractor (IlvManager *manager, IlvView *view)
	Constructor. More...
void	abort ()
	Aborts the interaction. More...
IlUInt	count ()
	Returns the number of elements in the current array of points. More...
IlUShort	getThreshold () const
	Returns the threshold. More...
virtual IlBoolean	handleEvent (IlvEvent &event)
	Handles events for the manager view. More...
void	init ()
	Initialization, when the interactor is attached to a view. More...
IlvPoint *	points ()
	Returns the current array of points. More...
void	setThreshold (IlUShort val)
	Sets the threshold. More...
Public Member Functions inherited from IlvManagerViewInteractor
	IlvManagerViewInteractor (IlvManager *manager, IlvView *view)
	Initializes a new IlvManagerViewInteractor. More...
virtual void	ensureVisible (const IlvPoint &point)
	Ensures the visibility of a given location. More...
IlvDisplay *	getDisplay () const
	Returns the display of the manager view. More...
IlvManager *	getManager () const
	Returns the manager. More...
IlvTransformer *	getTransformer () const
	Returns the transformer used with the manager view. More...
IlvView *	getView () const
	Returns the manager view. More...
virtual void	handleExpose (IlvRegion *clip=0)
	Called when the manager view receives an expose event. More...

Additional Inherited Members
Protected Member Functions inherited from IlvMakePolyPointsInteractor
IlvPoint *	transformPoints () const
	Returns the array of points in the coordinate system of the view. More...

Detailed Description

Manager interactor class.

Library: ilvmgr

Use this class to create IlvFilledSpline objects in a view controlled by a manager. The virtual member function handleEvent monitors mouse events. To draw a filled spline, the user:

1. Clicks and drag the left mouse button to add a point and set its tangents and tension.

2. Presses the return or space key, or double clicks to finish.

If the user presses the Control modifier while dragging the left mouse button, the left and right tangents at the current point are dissociated, letting the user create cusps on the Bezier spline.

See also

IlvFilledSpline, IlvPolySelectInteractor, IlvMakeClosedSplineInteractor.

Constructor & Destructor Documentation

IlvMakeFilledSplineInteractor()

IlvMakeFilledSplineInteractor::IlvMakeFilledSplineInteractor	(	IlvManager *	manager,
		IlvView *	view
	)

Constructor.

Initializes a new instance of the IlvMakeFilledSplineInteractor class.

Parameters

manager	The manager.
view	The manager view.

Member Function Documentation

commit()

void IlvMakeFilledSplineInteractor::commit ( IlBoolean  removeExtraPoints )

virtual

Called by handleEvent when the polypoint is terminated. This method should call doIt() and post an undoable command if need be.

Parameters

removeExtraPoints

When the curve entry is terminated by a double click, it may be desirable to remove the extra points that have been added in succession by the double click. This flag is set to tell the method that it should get rid of the extraneous points before calling doIt().

Reimplemented from IlvMakeSplineInteractor.

doIt()

virtual void IlvMakeFilledSplineInteractor::doIt ( IlUInt  count, IlvPoint *  points  )

virtual

Finalizes the interaction by creating an IlvFilledSpline object.

Creates an IlvFilledSpline in the manager from the array of points provided during the interaction.

Parameters

count	The number of points in the array.
points	The array of points, in the object coordinate system.

Reimplemented from IlvMakeSplineInteractor.

Reimplemented in IlvMakeClosedSplineInteractor.

drawGhost()

virtual void IlvMakeFilledSplineInteractor::drawGhost ( )

virtual

Visual feedback during interaction.

Draws a filled spline in XOR mode.

Reimplemented from IlvMakeSplineInteractor.

Reimplemented in IlvMakeClosedSplineInteractor.

react()

void IlvMakeFilledSplineInteractor::react ( IlvPoint &  p, IlUShort  modifier = 0  )

virtual

Ensures the Bezier spline stays continuously derivable as new points are entered.

When a new control point is added, the default implementation realigns the previous control points if needed, to ensure that the Bezier remains continuous at each control point, including the start and end points.

Reimplemented from IlvMakeSplineInteractor.