casa::DSPolyLine Class Reference

Implementation of a polyline. More...

#include <DSPolyLine.h>

Inheritance diagram for casa::DSPolyLine:

List of all members.

Public Member Functions
	DSPolyLine ()
	Constructors and Destructors.
	DSPolyLine (const DSPolyLine &other)
	DSPolyLine (const Matrix< Float > &points, const Bool &handles, const Bool &drawHandles)
virtual	~DSPolyLine ()
virtual void	draw (PixelCanvas *pc)
	General DisplayShape functions.
virtual Bool	inObject (const Float &xPos, const Float &yPos)
	Is the supplied point within the DisplayShape?
virtual void	move (const Float &dX, const Float &dY)
virtual Vector< Float >	getCenter ()
	Returns the center of the DisplayShape (x,y).
virtual void	setCenter (const Float &xPos, const Float &yPos)
	Sets the center of the DisplayShape.
virtual void	scale (const Float &scaleFactor)
	Scale the shape about its center by the scaleFactor.
virtual void	rotate (const Float &angle)
	Rotate the shape about its center by a set angle (angle in degrees).
virtual void	rotateAbout (const Float &angle, const Float &aboutX, const Float &aboutY)
virtual void	changePoint (const Vector< Float > &pos)
	Point manipulation functions.
virtual void	changePoint (const Vector< Float > &pos, const Int n)
	Changes the nth point making up the DisplayShape ot the specified location.
virtual void	addPoint (const Vector< Float > &newPos)
	If applicable, this function will add a point to the shape in the most meaningful location.
virtual void	setPoints (const Matrix< Float > &points)
virtual uInt	nPoints ()
	Return the number of points.
virtual Bool	setOptions (const Record &newSettings)
	Get and set this shapes options.
virtual Record	getOptions ()
	Settings.
Protected Member Functions
virtual Matrix< Float >	getPoints ()
Private Member Functions
virtual void	setDefaultOptions ()
	Used when default constructor called.
Private Attributes
Matrix< Float >	itsPoints
Vector< Float >	itsCenter
Bool	itsValidCenter

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Detailed Description

Implementation of a polyline.

Prerequisite

• DisplayShape

Etymology

DSPolyLine is a method of managing the drawing of a polyline onto a PixelCanvas.

Synopsis

DSPolyLine manages a collection of points, which when called it draws. It also manages actions like the addition and removal of points from/to the line.

There are generally two ways to make DisplayShape(s); To create them in "one hit" by providing arguments to the constructor, or by using the default constructor and then the "setOptions" method. A simple interface for all classes inheriting from the DisplayShape class is provided by DisplayShapeInterface .

Motivation

The need to draw, move and manipulate a polyline.

Example

Definition at line 76 of file DSPolyLine.h.

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Constructor & Destructor Documentation

casa::DSPolyLine::DSPolyLine

(

)

Constructors and Destructors.

casa::DSPolyLine::DSPolyLine

(

const DSPolyLine &

other

)

casa::DSPolyLine::DSPolyLine	(	const Matrix< Float > &	points,
		const Bool &	handles,
		const Bool &	drawHandles
	)

virtual casa::DSPolyLine::~DSPolyLine

(

)

[virtual]

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Member Function Documentation

virtual void casa::DSPolyLine::addPoint

(

const Vector< Float > &

)

[virtual]

If applicable, this function will add a point to the shape in the most meaningful location.

Reimplemented from casa::DisplayShape.

Reimplemented in casa::DSScreenPolyLine, and casa::DSWorldPolyLine.

virtual void casa::DSPolyLine::changePoint

(

const Vector< Float > &

pos

)

[virtual]

Point manipulation functions.

The changePoint with only one argument moves the closest point to the location specified.

Implements casa::DisplayShape.

Reimplemented in casa::DSArrow, casa::DSWorldPolyLine, casa::DSScreenArrow, casa::DSWorldArrow, and casa::DSScreenPolyLine.

virtual void casa::DSPolyLine::changePoint	(	const Vector< Float > &	newPoint,
		const Int	nPoint
	)		[virtual]

Changes the nth point making up the DisplayShape ot the specified location.

Implements casa::DisplayShape.

Reimplemented in casa::DSArrow, casa::DSWorldPolyLine, casa::DSScreenArrow, casa::DSWorldArrow, and casa::DSScreenPolyLine.

virtual void casa::DSPolyLine::draw

(

PixelCanvas *

pc

)

[virtual]

General DisplayShape functions.

Reimplemented from casa::DSBasic.

Reimplemented in casa::DSArrow, casa::DSWorldPolyLine, and casa::DSWorldArrow.

virtual Vector<Float> casa::DSPolyLine::getCenter

(

)

[virtual]

Returns the center of the DisplayShape (x,y).

Implements casa::DisplayShape.

virtual Record casa::DSPolyLine::getOptions

(

)

[virtual]

Settings.

Reimplemented from casa::DSBasic.

Reimplemented in casa::DSArrow, casa::DSLine, casa::DSWorldPolyLine, casa::DSScreenArrow, casa::DSWorldArrow, casa::DSScreenPolyLine, casa::DSPixelArrow, and casa::DSPixelPolyLine.

virtual Matrix<Float> casa::DSPolyLine::getPoints

(

)

[protected, virtual]

Return all my points.

virtual Bool casa::DSPolyLine::inObject	(	const Float &	xPos,
		const Float &	yPos
	)		[virtual]

Is the supplied point within the DisplayShape?

Implements casa::DisplayShape.

virtual void casa::DSPolyLine::move	(	const Float &	dX,
		const Float &	dY
	)		[virtual]

Reimplemented from casa::DSBasic.

Reimplemented in casa::DSArrow, casa::DSScreenArrow, casa::DSWorldPolyLine, casa::DSScreenPolyLine, and casa::DSWorldArrow.

virtual uInt casa::DSPolyLine::nPoints

(

)

[virtual]

Return the number of points.

virtual void casa::DSPolyLine::rotate

(

const Float &

angle

)

[virtual]

Rotate the shape about its center by a set angle (angle in degrees).

Implements casa::DisplayShape.

Reimplemented in casa::DSArrow, casa::DSScreenArrow, casa::DSWorldPolyLine, casa::DSScreenPolyLine, and casa::DSWorldArrow.

virtual void casa::DSPolyLine::rotateAbout	(	const Float &	angle,
		const Float &	aboutX,
		const Float &	aboutY
	)		[virtual]

Reimplemented from casa::DSBasic.

Reimplemented in casa::DSArrow.

virtual void casa::DSPolyLine::scale

(

const Float &

scaleFactor

)

[virtual]

Scale the shape about its center by the scaleFactor.

Implements casa::DisplayShape.

Reimplemented in casa::DSArrow, casa::DSScreenArrow, casa::DSWorldPolyLine, casa::DSWorldArrow, and casa::DSScreenPolyLine.

virtual void casa::DSPolyLine::setCenter	(	const Float &	xPos,
		const Float &	yPos
	)		[virtual]

Sets the center of the DisplayShape.

Implements casa::DisplayShape.

Reimplemented in casa::DSArrow, casa::DSLine, casa::DSScreenArrow, casa::DSWorldPolyLine, casa::DSWorldArrow, and casa::DSScreenPolyLine.

virtual void casa::DSPolyLine::setDefaultOptions

(

)

[private, virtual]

Used when default constructor called.

Reimplemented from casa::DisplayShape.

Reimplemented in casa::DSArrow.

virtual Bool casa::DSPolyLine::setOptions

(

const Record &

newSettings

)

[virtual]

Get and set this shapes options.

Reimplemented from casa::DSBasic.

Reimplemented in casa::DSArrow, casa::DSLine, casa::DSWorldPolyLine, casa::DSScreenArrow, casa::DSWorldArrow, casa::DSScreenPolyLine, casa::DSPixelArrow, and casa::DSPixelPolyLine.

virtual void casa::DSPolyLine::setPoints

(

const Matrix< Float > &

points

)

[virtual]

Reimplemented in casa::DSScreenPolyLine, and casa::DSWorldPolyLine.

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Member Data Documentation

Vector<Float> casa::DSPolyLine::itsCenter [private]

Definition at line 126 of file DSPolyLine.h.

Matrix<Float> casa::DSPolyLine::itsPoints [private]

Definition at line 125 of file DSPolyLine.h.

Bool casa::DSPolyLine::itsValidCenter [private]

Definition at line 127 of file DSPolyLine.h.

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

• code/display/DisplayShapes/DSPolyLine.h