#include <linecrossing.h>

Inheritance diagram for canvascv::LineCrossing:

Public Member Functions
int	getDirection () const
	-1 or 1

const std::string &	getName () const
	gets the text from the attached TextBox

void	setName (const std::string &value) const
	sets the text in the attached TextBox

TextBox *	getTextBox ()
	getter to internal TextBox

Line *	getLine ()
	getter to internal Line

Arrow *	getArrow ()
	getter to internal Arrow

bool	wasCrossed (const Point &pt) const
	wasCrossed More...

int	isCrossedBySegment (const Point &lineStart, const Point &lineEnd) const
	isCrossedBy More...

virtual bool	isAtPos (const cv::Point &pos)
	returns true if shape is at pos, false otherwise

virtual std::list< Handle * >	getConnectionTargets ()
	getConnectionTargets More...

virtual const char *	getType () const
	getType is always implemented by derived to return the same static pointer per shape. More...

Public Member Functions inherited from canvascv::CompoundShape
virtual void	setOutlineColor (const cv::Scalar &value)
	set the outline color

virtual void	setFillColor (const cv::Scalar &value)
	set the fill color (fill color is not very useful for shapes right now)

virtual void	setThickness (int value)
	set line thickness to use when drawing

virtual void	setLineType (int value)
	set the line type (LINE_4, LINE_8, LINE_AA)

virtual void	setLocked (bool value)
	set the shape lock state (can/can't be moved/edited)

virtual void	setVisible (bool value)
	set the shape visible state

virtual std::shared_ptr< Shape >	getShape (int id)
	getShape More...

Public Member Functions inherited from canvascv::Shape
	Shape ()
	constructor

	Shape (const Shape &other)
	copy constructor

virtual	~Shape ()
	virtual destructor

void	notifyOnEvent (CBPerShape cb)
	used to register for notifications on shape More...

cv::Scalar	getOutlineColor () const
	get the outline color

cv::Scalar	getFillColor () const
	get the fill color (fill color is not very useful for shapes right now)

bool	getLocked () const
	is the shape locked (can't be moved/edited)

bool	getVisible () const
	is the shape visible

int	getThickness () const
	get line thickness to use when drawing

int	getLineType () const
	get the line type (LINE_4, LINE_8, LINE_AA)

int	getId ()
	return a unique id for this shape

Protected Member Functions
virtual void	draw (cv::Mat &canvas)
	draw shape on the canvas More...

virtual bool	mousePressed (const cv::Point &pos, bool onCreate=false)
	mousePressed More...

Protected Member Functions inherited from canvascv::CompoundShape
virtual bool	mouseMoved (const cv::Point &pos)
	mouseMoved More...

virtual bool	mouseReleased (const cv::Point &pos)
	mouseReleased More...

virtual bool	keyPressed (int &key)
	keyPressed will be called by Canvas for active shapes More...

virtual void	lostFocus ()
	lostFocus is called by Canvas if we're in it and just became non-active

Protected Member Functions inherited from canvascv::Shape
void	drawHelper (cv::Mat &canvas, Shape *other)
	helper method for non compund shapes to draw their members

Additional Inherited Members
Public Types inherited from canvascv::Shape
typedef std::function< void(Shape *, Event)>	CBPerShape
	signature of a callback which gets the Event

Detailed Description

Helps us know when something we tracked passed over a line.
We also need to know if it passed in one direction or another.

Examples:: example_linecrossing.cpp, and example_shapes_widgets.cpp.

Member Function Documentation

virtual void canvascv::LineCrossing::draw ( cv::Mat & canvas )

protectedvirtual

Parameters

canvas

Reimplemented from canvascv::CompoundShape.

virtual std::list<Handle *> canvascv::LineCrossing::getConnectionTargets ( )

virtual

Return a list of Handles this shape allows to connect to from other shapes (mainly for ShapesConnector)

Returns: list of Handle pointers we ShapesConnector can use to connect

Implements canvascv::Shape.

virtual const char* canvascv::LineCrossing::getType ( ) const

virtual

Returns: const char * pointer to string with shape type name

Implements canvascv::Shape.

int canvascv::LineCrossing::isCrossedBySegment	(	const Point &	lineStart,
		const Point &	lineEnd
	)		const

Use cross product and predefined direction to tell if a given line path, starting at lineStart and ending at lineEnd is crossing this specific line segment .

Parameters

lineStart	the start of the line to check against (path origin Point).
lineEnd	the end of the line to check against (path latest Point).

Returns

0 if the segments are not crossing
1 if the segment crossed according to direction
-1 if the segment crossed against the direction

Examples:: example_linecrossing.cpp.

virtual bool canvascv::LineCrossing::mousePressed	(	const cv::Point &	pos,
		bool	onCreate = `false`
	)

protectedvirtual

Parameters

pos
onCreate	is true if this is the mouse press which cerated this shape

Returns: true for keep in focus, false for leave focus

Reimplemented from canvascv::CompoundShape.

bool canvascv::LineCrossing::wasCrossed ( const Point & pt ) const

Use cross product and predefined direction to tell if a given point is accross the endless line represented by this segment.

Parameters

pt	is the point we're going to examine

Returns: bool if line is on the other side of the line according to the direction arrow

The documentation for this class was generated from the following file:

CanvasCV-doxygen/src/canvascv/shapes/linecrossing.h

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation