drawables
Class DrawableLine

java.lang.Object
  |
  +--drawables.Drawable
        |
        +--drawables.DrawableLine

All Implemented Interfaces:

EntryReadable, java.io.Serializable

public class DrawableLine

extends Drawable

Drawable class for line segments.

See Also:

Serialized Form

Field Summary

static int	BACKWARDS in Rückrichtung.
static int	BOTHDIRECTIONS in beide Richtungen.
static int	FORWARDS in Hinrichtung.
static int	NORMALTYPE normaler Linientyp.
static int	SPLITTED gesplittete Linie.
static int	UNDIRECTED ungerichtet.

Fields inherited from class drawables.Drawable

AREALAYER, BITMAPLAYER, container, DEFMAXSCALE, DEFMINSCALE, layer, LINELAYER, maxScale, mbr, minScale, nextOfLayer, obj, POINTLAYER, pres, selected, TEXTLAYER

Constructor Summary

protected	DrawableLine() Konstruktor.
	DrawableLine(int px1, int py1, int px2, int py2) Konstruktor.
	DrawableLine(int px1, int py1, int px2, int py2, java.lang.String presName) Konstruktor.
	DrawableLine(int px1, int py1, int px2, int py2, java.lang.String presName, int pMinScale, int pMaxScale) Konstruktor.

Method Summary

void	changePoint1(int x, int y) Changes the first point of the line.
void	changePoint2(int x, int y) Changes the second point of the line.
void	deselect(int direction) Deselektiert die Linie richtungsbezogen.
static void	drawProtected(java.awt.Graphics g, DrawablePresentation ap, java.awt.Color forwardsColor, java.awt.Color backwardsColor, int cx1, int cy1, int cx2, int cy2) Zeichnet die Linie im Graphic Context g,
protected void	drawProtected(java.awt.Graphics g, int scale, int mode, int value) Zeichnet die Linie im Graphic Context g,
int	getX1() Returns the x-coordinate of the first point.
int	getX2() Returns the x-coordinate of the second point.
int	getY1() Returns the y-coordinate of the first point.
int	getY2() Returns the y-coordinate of the second point.
boolean	interacts(int x, int y, int scale) Tests whether the primitive is selected by a given point or not.
static boolean	interacts(int x, int y, int x1, int y1, int x2, int y2, int mx1, int my1, int mx2, int my2, int scale)
java.awt.Point	intersects(DrawableLine line) Tests if the lines intersect.
boolean	isSelected() Gibt zurück, ob die Linie selektiert ist.
boolean	isSelected(int direction) Gibt zurück, ob die Linie richtungsbezogen selektiert ist.
EntryReadable	read(EntryInput r) Liest die Linie vom Entry-Input ein.
void	select(int direction) Selektiert die Linie richtungsbezogen.
void	setSelection(boolean on) (De-)Selektiert die Linie.
java.awt.Point	touches(int x, int y, int tolerance) Testet, ob der angegebene Punkt mit einer Toleranz auf der Linie liegt.
void	writeGML(EntryWriter out) Writes the primitive as GML tag.
protected void	writeProtected(EntryWriter out, int type) Writes the line.

Methods inherited from class drawables.Drawable

computeDistance, computeDistanceTo, contains, draw, draw, draw, draw, getContainer, getId, getLayer, getMaxScale, getMBR, getMinScale, getNextOfLayer, getObject, getPresentation, getPresentation, getType, intersects, intersects, intersects, isContainedBy, isVisible, readCoord, readCoord, readDrawable, readDrawable, setContainer, setLayer, setMaxScale, setMBR, setMinScale, setNextOfLayer, setObject, setPresentation, toString, write, writeCoord, writeCoord

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

UNDIRECTED

public static final int UNDIRECTED

ungerichtet.

See Also:

Constant Field Values

FORWARDS

public static final int FORWARDS

in Hinrichtung.

See Also:

Constant Field Values

BACKWARDS

public static final int BACKWARDS

in Rückrichtung.

See Also:

Constant Field Values

BOTHDIRECTIONS

public static final int BOTHDIRECTIONS

in beide Richtungen.

See Also:

Constant Field Values

NORMALTYPE

public static final int NORMALTYPE

normaler Linientyp.

See Also:

Constant Field Values

SPLITTED

public static final int SPLITTED

gesplittete Linie.

See Also:

Constant Field Values

Constructor Detail

DrawableLine

protected DrawableLine()

Konstruktor.

DrawableLine

public DrawableLine(int px1,
                    int py1,
                    int px2,
                    int py2)

Konstruktor.

Parameters:

px1 - x-Koordinate des Startpunkts

py1 - y-Koordinate des Startpunkts

px2 - x-Koordinate des Endpunkts

py2 - y-Koordinate des Endpunkts

DrawableLine

public DrawableLine(int px1,
                    int py1,
                    int px2,
                    int py2,
                    java.lang.String presName)

Konstruktor.

Parameters:

px1 - x-Koordinate des Startpunkts

py1 - y-Koordinate des Startpunkts

px2 - x-Koordinate des Endpunkts

py2 - y-Koordinate des Endpunkts

presName - Name des Darstellungsobjekts

DrawableLine

public DrawableLine(int px1,
                    int py1,
                    int px2,
                    int py2,
                    java.lang.String presName,
                    int pMinScale,
                    int pMaxScale)

Konstruktor.

Parameters:

px1 - x-Koordinate des Startpunkts

py1 - y-Koordinate des Startpunkts

px2 - x-Koordinate des Endpunkts

py2 - y-Koordinate des Endpunkts

presName - Name des Darstellungsobjekts

pMinScale - Mindest-Maßstab zum Zeichnen

pMaxScale - Maximal-Maßstab zum Zeichnen

Method Detail

changePoint1

public void changePoint1(int x,
                         int y)

Changes the first point of the line.

Parameters:

x - x-coordinate

y - y-coordinate

changePoint2

public void changePoint2(int x,
                         int y)

Changes the second point of the line.

Parameters:

x - x-coordinate

y - y-coordinate

deselect

public void deselect(int direction)

Deselektiert die Linie richtungsbezogen.

drawProtected

protected void drawProtected(java.awt.Graphics g,
                             int scale,
                             int mode,
                             int value)

Zeichnet die Linie im Graphic Context g,

Specified by:

drawProtected in class Drawable

Parameters:

g - aktueller Graphic Context

scale - aktueller Maßstab

mode - aktueller Darstellungsmodus

value - Darstellungswert

drawProtected

public static void drawProtected(java.awt.Graphics g,
                                 DrawablePresentation ap,
                                 java.awt.Color forwardsColor,
                                 java.awt.Color backwardsColor,
                                 int cx1,
                                 int cy1,
                                 int cx2,
                                 int cy2)

Zeichnet die Linie im Graphic Context g,

Parameters:

g - aktueller Graphic Context

ap - aktuelle Darstellungseigenschaften

cx1 - 1. x-Pixel-Koordinate

cy1 - 1. y-Pixel-Koordinate

cx2 - 2. x-Pixel-Koordinate

cy2 - 2. y-Pixel-Koordinate

getX1

public int getX1()

Returns the x-coordinate of the first point.

Returns:

x-coordinate

getX2

public int getX2()

Returns the x-coordinate of the second point.

Returns:

x-coordinate

getY1

public int getY1()

Returns the y-coordinate of the first point.

Returns:

y-coordinate

getY2

public int getY2()

Returns the y-coordinate of the second point.

Returns:

y-coordinate

interacts

public boolean interacts(int x,
                         int y,
                         int scale)

Description copied from class: Drawable

Tests whether the primitive is selected by a given point or not. The default implementation is based on the mbr of the primitive.

Overrides:

interacts in class Drawable

Parameters:

x - x-coordinate of the point

y - y-coordinate of the point

scale - actuals scale

Returns:

selected?

interacts

public static boolean interacts(int x,
                                int y,
                                int x1,
                                int y1,
                                int x2,
                                int y2,
                                int mx1,
                                int my1,
                                int mx2,
                                int my2,
                                int scale)

intersects

public java.awt.Point intersects(DrawableLine line)

Tests if the lines intersect. If they intersect, the intersection point is returned, otherwise null.

Parameters:

line - line to be tested

Returns:

intersection point (or null)

isSelected

public boolean isSelected()

Gibt zurück, ob die Linie selektiert ist.

Returns:

Linie selektiert?

isSelected

public boolean isSelected(int direction)

Gibt zurück, ob die Linie richtungsbezogen selektiert ist.

Returns:

Linie selektiert?

read

public EntryReadable read(EntryInput r)

Liest die Linie vom Entry-Input ein. Erster Eintrag "type".
type == 0: x1,y1,x2,y2
type == 1: presName
type == 2: minScale,maxScale

Parameters:

r - this

Returns:

die Linie

select

public void select(int direction)

Selektiert die Linie richtungsbezogen.

setSelection

public void setSelection(boolean on)

(De-)Selektiert die Linie.

Overrides:

setSelection in class Drawable

Parameters:

on - selektieren?

touches

public java.awt.Point touches(int x,
                              int y,
                              int tolerance)

Testet, ob der angegebene Punkt mit einer Toleranz auf der Linie liegt.

Parameters:

x - x-Koordinate

y - y-Koordinate

tolerance - Toleranzwert

Returns:

Berechneter Lagepunkt; null, falls keine Deckung

writeGML

public void writeGML(EntryWriter out)

Writes the primitive as GML tag.

Overrides:

writeGML in class Drawable

Parameters:

out - entry writer

writeProtected

protected void writeProtected(EntryWriter out,
                              int type)

Writes the line.

Specified by:

writeProtected in class Drawable

Parameters:

out - entry writer

type - type of the output; meaning see read