Line

Documentation of 'ij.gui.Line' Java class Line

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Summary:
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Field |
Constr |
Method

Detail:
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Method

java.lang.Object
- ij.gui.Roi
- - ij.gui.Line

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.lang.Iterable<java.awt.Point>

Direct Known Subclasses:

Arrow
```
public class Line
extends Roi
```
This class represents a straight line selection.

See Also:

Serialized Form

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

static class Line.PointIterator
Dedicated point iterator for thin lines.

Nested Classes
Modifier and Type	Class and Description
`static class`	`Line.PointIterator` Dedicated point iterator for thin lines.

Field Summary

Fields
Modifier and Type Field and Description

int x1

double x1d

int x2

double x2d

int y1

double y1d

int y2

double y2d
- Fields inherited from class ij.gui.Roi
  ANGLE, COMPOSITE, CONSTRUCTING, FREELINE, FREEROI, HANDLE_SIZE, LINE, MOVING, MOVING_HANDLE, NORMAL, NOT_PASTING, onePixelWide, OVAL, POINT, POLYGON, POLYLINE, previousRoi, RECTANGLE, RESIZING, TRACED_ROI

Fields
Modifier and Type	Field and Description
`int`	`x1`
`double`	`x1d`
`int`	`x2`
`double`	`x2d`
`int`	`y1`
`double`	`y1d`
`int`	`y2`
`double`	`y2d`

Constructor Summary

Constructors
Constructor and Description
`Line(double ox1, double oy1, double ox2, double oy2)` Creates a new straight line selection using the specified starting and ending offscreen double coordinates.
`Line(int sx, int sy, ImagePlus imp)` Starts the process of creating a new user-generated straight line selection.
`Line(int ox1, int oy1, int ox2, int oy2)` Creates a new straight line selection using the specified starting and ending offscreen integer coordinates.
`Line(int ox1, int oy1, int ox2, int oy2, ImagePlus imp)` Deprecated. replaced by Line(int, int, int, int)

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`boolean`	`contains(int x, int y)`
`void`	`draw(java.awt.Graphics g)` Draws this line on the image.
`void`	`drawPixels(ImageProcessor ip)` Draws the selection outline on the specified ImageProcessor.
`double`	`getAngle()` Overridden by PolygonRoi (angle between first two points), TextRoi (text angle) and Line (line angle).
`java.awt.Rectangle`	`getBounds()` Return the bounding rectangle of this line.
`boolean`	`getDrawOffset()` Returns true if this is a PolygonRoi that supports sub-pixel resolution and polygons are drawn on zoomed images offset down and to the right by 0.5 pixels..
`FloatPolygon`	`getFloatPoints()` Returns, as a FloatPolygon, the two points that define this line.
`FloatPolygon`	`getFloatPolygon()` If the width of this line is less than or equal to one, returns the starting and ending coordinates as a 2-point FloatPolygon, or, if the width is greater than one, returns an outline of the line as a 4-point FloatPolygon.
`double`	`getLength()` Returns the length of this line.
`double[]`	`getPixels()` Returns the pixel values along this line.
`java.awt.Polygon`	`getPoints()` Returns, as a Polygon, the two points that define this line.
`java.awt.Polygon`	`getPolygon()` If the width of this line is less than or equal to one, returns the starting and ending coordinates as a 2-point Polygon, or, if the width is greater than one, returns an outline of the line as a 4-point Polygon.
`double`	`getRawLength()` Returns the length of this line in pixels.
`FloatPolygon`	`getRotationCenter()`
`static int`	`getWidth()`
`int`	`isHandle(int sx, int sy)` Returns a handle number if the specified screen coordinates are inside or near a handle, otherwise returns -1.
`java.util.Iterator<java.awt.Point>`	`iterator()` Required by the `Iterable` interface.
`void`	`mouseMoved(java.awt.event.MouseEvent e)`
`void`	`nudgeCorner(int key)` Nudge end point of line by one pixel.
`void`	`setDrawOffset(boolean drawOffset)`
`void`	`setLocation(int x, int y)` Set the location of the ROI in image coordinates.
`void`	`setStrokeWidth(float width)` Sets the width of the line used to draw this ROI.
`static void`	`setWidth(int w)`
`boolean`	`subPixelResolution()` Always returns true.

Methods inherited from class ij.gui.Roi
abortPaste, addRoiListener, clone, copyAttributes, drawOverlay, drawPixels, enableSubPixelResolution, endPaste, equals, getAngle, getBoundingRect, getColor, getContainedFloatPoints, getContainedPoints, getContourCentroid, getConvexHull, getCornerDiameter, getCPosition, getCurrentPasteMode, getDebugInfo, getDefaultFillColor, getFeretsDiameter, getFeretValues, getFillColor, getFloatAngle, getFloatBounds, getFloatHeight, getFloatWidth, getHashCode, getImage, getImageID, getInterpolatedPolygon, getInterpolatedPolygon, getMask, getName, getPasteMode, getPosition, getProperties, getProperty, getPropertyCount, getPrototypeOverlay, getRoundRectArcSize, getState, getStatistics, getStroke, getStrokeColor, getStrokeWidth, getTPosition, getType, getTypeAsString, getXBase, getYBase, getZPosition, hasHyperStackPosition, isActiveOverlayRoi, isArea, isCursor, isDrawingTool, isLine, isVisible, lineCircleIntersection, mouseDragged, mouseReleased, notifyListeners, nudge, removeRoiListener, setColor, setCornerDiameter, setDefaultFillColor, setFillColor, setFlattenScale, setIgnoreClipRect, setImage, setInstanceColor, setIsCursor, setLineWidth, setLocation, setName, setNonScalable, setPasteMode, setPosition, setPosition, setPosition, setProperties, setProperty, setPrototypeOverlay, setRotationCenter, setRoundRectArcSize, setStroke, setStrokeColor, setStrokeWidth, startPaste, temporarilyHide, toFloat, toInt, toInt, toIntR, toString, update, updateWideLine

Methods inherited from class java.lang.Object
getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.lang.Iterable
forEach, spliterator

- Field Detail
  - x1
```
public int x1
```
  - y1
```
public int y1
```
  - x2
```
public int x2
```
  - y2
```
public int y2
```
  - x1d
```
public double x1d
```
  - y1d
```
public double y1d
```
  - x2d
```
public double x2d
```
  - y2d
```
public double y2d
```
- Constructor Detail
  - Line
```
public Line(int ox1,
            int oy1,
            int ox2,
            int oy2)
```
    Creates a new straight line selection using the specified starting and ending offscreen integer coordinates.
  - Line
```
public Line(double ox1,
            double oy1,
            double ox2,
            double oy2)
```
    Creates a new straight line selection using the specified starting and ending offscreen double coordinates.
  - Line
```
public Line(int sx,
            int sy,
            ImagePlus imp)
```
    Starts the process of creating a new user-generated straight line selection. 'sx' and 'sy' are screen coordinates that specify the start of the line. The user will determine the end of the line interactively using rubber banding.
  - Line
```
public Line(int ox1,
            int oy1,
            int ox2,
            int oy2,
            ImagePlus imp)
```
    Deprecated. replaced by Line(int, int, int, int)
- Method Detail
  - mouseMoved
```
public void mouseMoved(java.awt.event.MouseEvent e)
```
    Overrides:
    
    mouseMoved in class Roi
  - draw
```
public void draw(java.awt.Graphics g)
```
    Draws this line on the image.
    
    Overrides:
    
    draw in class Roi
  - getAngle
```
public double getAngle()
```
    Description copied from class: Roi
    
    Overridden by PolygonRoi (angle between first two points), TextRoi (text angle) and Line (line angle).
    
    Overrides:
    
    getAngle in class Roi
  - getLength
```
public double getLength()
```
    Returns the length of this line.
    
    Overrides:
    
    getLength in class Roi
  - getRawLength
```
public double getRawLength()
```
    Returns the length of this line in pixels.
  - getPixels
```
public double[] getPixels()
```
    Returns the pixel values along this line.
  - getPoints
```
public java.awt.Polygon getPoints()
```
    Returns, as a Polygon, the two points that define this line.
  - getFloatPoints
```
public FloatPolygon getFloatPoints()
```
    Returns, as a FloatPolygon, the two points that define this line.
  - getPolygon
```
public java.awt.Polygon getPolygon()
```
    If the width of this line is less than or equal to one, returns the starting and ending coordinates as a 2-point Polygon, or, if the width is greater than one, returns an outline of the line as a 4-point Polygon.
    
    Overrides:
    
    getPolygon in class Roi
    
    See Also:
    
    getFloatPolygon(), getPoints()
  - getFloatPolygon
```
public FloatPolygon getFloatPolygon()
```
    If the width of this line is less than or equal to one, returns the starting and ending coordinates as a 2-point FloatPolygon, or, if the width is greater than one, returns an outline of the line as a 4-point FloatPolygon.
    
    Overrides:
    
    getFloatPolygon in class Roi
    
    See Also:
    
    getFloatPoints()
  - drawPixels
```
public void drawPixels(ImageProcessor ip)
```
    Description copied from class: Roi
    
    Draws the selection outline on the specified ImageProcessor.
    
    Overrides:
    
    drawPixels in class Roi
    
    See Also:
    
    ImageProcessor.setColor(java.awt.Color), ImageProcessor.setLineWidth(int)
  - contains
```
public boolean contains(int x,
                        int y)
```
    Overrides:
    
    contains in class Roi
  - isHandle
```
public int isHandle(int sx,
                    int sy)
```
    Returns a handle number if the specified screen coordinates are inside or near a handle, otherwise returns -1.
    
    Overrides:
    
    isHandle in class Roi
  - getWidth
```
public static int getWidth()
```
  - setWidth
```
public static void setWidth(int w)
```
  - setStrokeWidth
```
public void setStrokeWidth(float width)
```
    Description copied from class: Roi
    
    Sets the width of the line used to draw this ROI. Set the width to 0.0 and the ROI will be drawn using a a 1 pixel stroke width regardless of the magnification.
    
    Overrides:
    
    setStrokeWidth in class Roi
    
    See Also:
    
    Roi.setStrokeColor(Color), ImagePlus.setOverlay(ij.gui.Overlay)
  - getBounds
```
public java.awt.Rectangle getBounds()
```
    Return the bounding rectangle of this line.
    
    Overrides:
    
    getBounds in class Roi
  - nudgeCorner
```
public void nudgeCorner(int key)
```
    Nudge end point of line by one pixel.
    
    Overrides:
    
    nudgeCorner in class Roi
  - getDrawOffset
```
public boolean getDrawOffset()
```
    Description copied from class: Roi
    
    Returns true if this is a PolygonRoi that supports sub-pixel resolution and polygons are drawn on zoomed images offset down and to the right by 0.5 pixels..
    
    Overrides:
    
    getDrawOffset in class Roi
  - setDrawOffset
```
public void setDrawOffset(boolean drawOffset)
```
    Overrides:
    
    setDrawOffset in class Roi
  - subPixelResolution
```
public boolean subPixelResolution()
```
    Always returns true.
    
    Overrides:
    
    subPixelResolution in class Roi
  - setLocation
```
public void setLocation(int x,
                        int y)
```
    Description copied from class: Roi
    
    Set the location of the ROI in image coordinates.
    
    Overrides:
    
    setLocation in class Roi
  - getRotationCenter
```
public FloatPolygon getRotationCenter()
```
    Overrides:
    
    getRotationCenter in class Roi
  - iterator
```
public java.util.Iterator<java.awt.Point> iterator()
```
    Description copied from class: Roi
    Required by the Iterable interface. Use to iterate over the contained coordinates. Usage example:
```
 for (Point p : roi) {
   // process p
 }
 
```
    Author: Wilhelm Burger
    Specified by:
    
    iterator in interface java.lang.Iterable<java.awt.Point>
    
    Overrides:
    
    iterator in class Roi
    
    See Also:
    
    Roi.getContainedPoints(), Roi.getContainedFloatPoints()

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Summary:
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Detail:
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Class Line

Nested Class Summary

Field Summary

Fields inherited from class ij.gui.Roi

Constructor Summary

Method Summary

Methods inherited from class ij.gui.Roi

Methods inherited from class java.lang.Object

Methods inherited from interface java.lang.Iterable

Field Detail

x1

y1

x2

y2

x1d

y1d

x2d

y2d

Constructor Detail

Line

Line

Line

Line

Method Detail

mouseMoved

draw

getAngle

getLength

getRawLength

getPixels

getPoints

getFloatPoints

getPolygon

getFloatPolygon

drawPixels

contains

isHandle

getWidth

setWidth

setStrokeWidth

getBounds

nudgeCorner

getDrawOffset

setDrawOffset

subPixelResolution

setLocation

getRotationCenter

iterator