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PointRoi |
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package ij.gui;
import java.awt.*;
import java.awt.image.*;
import ij.*;
import ij.process.*;
import ij.measure.*;
import ij.plugin.filter.Analyzer;
import java.awt.event.KeyEvent;
/** This class represents a collection of points. */
public class PointRoi extends PolygonRoi {
static Font font;
/** Creates a new PointRoi using the specified arrays of offscreen coordinates. */
public PointRoi(int[] ox, int[] oy, int points) {
super(ox, oy, points, POINT);
width+=1; height+=1;
}
/** Creates a new PointRoi using the specified offscreen coordinates. */
public PointRoi(int ox, int oy) {
super(makeXArray(ox, null), makeYArray(oy, null), 1, POINT);
width=1; height=1;
}
/** Creates a new PointRoi using the specified screen coordinates. */
public PointRoi(int sx, int sy, ImagePlus imp) {
super(makeXArray(sx, imp), makeYArray(sy, imp), 1, POINT);
setImage(imp);
width=1; height=1;
if (imp!=null) imp.draw(x-5, y-5, width+10, height+10);
}
static int[] makeXArray(int value, ImagePlus imp) {
int[] array = new int[1];
array[0] = imp!=null?imp.getCanvas().offScreenX(value):value;
return array;
}
static int[] makeYArray(int value, ImagePlus imp) {
int[] array = new int[1];
array[0] = imp!=null?imp.getCanvas().offScreenY(value):value;
return array;
}
void handleMouseMove(int ox, int oy) {
//IJ.log("handleMouseMove");
}
protected void handleMouseUp(int sx, int sy) {
super.handleMouseUp(sx, sy);
modifyRoi(); //adds this point to previous points if shift key down
}
/** Draws the points on the image. */
public void draw(Graphics g) {
//IJ.log("draw: " + nPoints+" "+width+" "+height);
updatePolygon();
if (ic!=null) mag = ic.getMagnification();
int size2 = HANDLE_SIZE/2;
if (!Prefs.noPointLabels) {
if (font==null) font = new Font("SansSerif", Font.PLAIN, 9);
g.setFont(font);
}
for (int i=0; i<nPoints; i++)
drawPoint(g, xp2[i]-size2, yp2[i]-size2, i+1);
//showStatus();
if (updateFullWindow)
{updateFullWindow = false; imp.draw();}
}
void drawPoint(Graphics g, int x, int y, int n) {
g.setColor(Color.white);
g.drawLine(x-4, y+2, x+8, y+2);
g.drawLine(x+2, y-4, x+2, y+8);
g.setColor(instanceColor!=null?instanceColor:ROIColor);
g.fillRect(x+1,y+1,3,3);
if (!Prefs.noPointLabels && nPoints>1)
g.drawString(""+n, x+6, y+13);
g.setColor(Color.black);
g.drawRect(x, y, 4, 4);
}
public void drawPixels(ImageProcessor ip) {
ip.setLineWidth(Analyzer.markWidth);
for (int i=0; i<nPoints; i++) {
ip.moveTo(x+xp[i], y+yp[i]);
ip.lineTo(x+xp[i], y+yp[i]);
}
}
/** Adds a point to this selection and return the result. */
public PointRoi addPoint(int x, int y) {
Polygon poly = getPolygon();
poly.addPoint(x, y);
PointRoi p = new PointRoi(poly.xpoints, poly.ypoints, poly.npoints);
//IJ.log("addPoint: "+((PointRoi)p).getNCoordinates());
return p;
}
/** Subtract the points that intersect the specified ROI and return
the result. Returns null if there are no resulting points. */
public PointRoi subtractPoints(Roi roi) {
Polygon points = getPolygon();
Polygon poly = roi.getPolygon();
Polygon points2 = new Polygon();
for (int i=0; i<points.npoints; i++) {
if (!poly.contains(points.xpoints[i], points.ypoints[i]))
points2.addPoint(points.xpoints[i], points.ypoints[i]);
}
if (points2.npoints==0)
return null;
else
return new PointRoi(points2.xpoints, points2.ypoints, points2.npoints);
}
public ImageProcessor getMask() {
if (cachedMask!=null && cachedMask.getPixels()!=null)
return cachedMask;
ImageProcessor mask = new ByteProcessor(width, height);
for (int i=0; i<nPoints; i++) {
mask.putPixel(xp[i], yp[i], 255);
}
cachedMask = mask;
return mask;
}
/** Returns true if (x,y) is one of the points in this collection. */
public boolean contains(int x, int y) {
for (int i=0; i<nPoints; i++) {
if (x==this.x+xp[i] && y==this.y+yp[i]) return true;
}
return false;
}
}
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PointRoi |
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