ij.process
Class FloatPolygon

java.lang.Object
  ij.process.FloatPolygon

public class FloatPolygon
extends Object

Used by the Roi classes to return float coordinate arrays and to determine if a point is inside or outside of spline fitted selections.

Field Summary

int	npoints The number of points.
float[]	xpoints
float[]	ypoints

Constructor Summary

FloatPolygon()
Constructs an empty FloatPolygon.

FloatPolygon(float[] xpoints, float[] ypoints)
Constructs a FloatPolygon from x and y arrays.

FloatPolygon(float[] xpoints, float[] ypoints, int npoints)
Constructs a FloatPolygon from x and y arrays.

Method Summary

void	addPoint(double x, double y)
void	addPoint(float x, float y)
boolean	contains(float x, float y) Returns 'true' if the point (x,y) is inside this polygon.
FloatPolygon	duplicate()
Rectangle	getBounds()
Rectangle2D.Double	getFloatBounds()
double	getLength(boolean isLine)

Methods inherited from class java.lang.Object

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

Field Detail

npoints

public int npoints

The number of points.

xpoints

public float[] xpoints

ypoints

public float[] ypoints

Constructor Detail

FloatPolygon

public FloatPolygon()

Constructs an empty FloatPolygon.

FloatPolygon

public FloatPolygon(float[] xpoints,
                    float[] ypoints)

Constructs a FloatPolygon from x and y arrays.

FloatPolygon

public FloatPolygon(float[] xpoints,
                    float[] ypoints,
                    int npoints)

Constructs a FloatPolygon from x and y arrays.

Method Detail

contains

public boolean contains(float x,
                        float y)

Returns 'true' if the point (x,y) is inside this polygon. This is a Java version of the remarkably small C program by W. Randolph Franklin at http://www.ecse.rpi.edu/Homepages/wrf/Research/Short_Notes/pnpoly.html#The%20C%20Code

getBounds

public Rectangle getBounds()

getFloatBounds

public Rectangle2D.Double getFloatBounds()

addPoint

public void addPoint(float x,
                     float y)

addPoint

public void addPoint(double x,
                     double y)

duplicate

public FloatPolygon duplicate()

getLength

public double getLength(boolean isLine)