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/*
* This plugin implements the "Selection Rotator" tool, which
* can be used to interactively rotate selections.
*
* @author: Peter Haub, Oct. 2015, phaub@dipsystems.de
*/
package ij.plugin.tool;
import ij.*;
import ij.gui.*;
import ij.plugin.RoiRotator;
import ij.plugin.tool.PlugInTool;
import ij.plugin.frame.Recorder;
import java.awt.*;
import java.awt.event.*;
public class RoiRotationTool extends PlugInTool {
ImageCanvas ic = null;
int startX=0, startY=0;
Roi roi, newRoi;
int centerX, centerY, xNew, yNew, dx1, dy1, dx2, dy2;
double l, l1, l2, dx, dy, phi, phi1, phi2;
boolean isImageRoi;
Rectangle bounds;
ImagePlus imp2;
static final int UPDOWNROTATION=0, CIRCULARROTATION=1;
int defaultRotationMode = CIRCULARROTATION;
public void mousePressed(ImagePlus imp, MouseEvent e) {
if (imp == null) return;
imp2 = imp;
ic = imp.getCanvas();
if (ic == null) return;
roi = imp.getRoi();
if (roi==null) {
IJ.beep();
IJ.showStatus("No selection");
return;
}
startX = ic.offScreenX(e.getX());
startY = ic.offScreenY(e.getY());
if (defaultRotationMode == UPDOWNROTATION){
centerX = imp.getWidth()/2;
centerY = imp.getHeight()/2;
} else {
double[] centroid = roi.getContourCentroid();
centerX = (int)Math.round(centroid[0]);
centerY = (int)Math.round(centroid[1]);
}
}
public void mouseDragged(ImagePlus imp, MouseEvent e) {
if (imp == null || ic == null) return;
roi = imp.getRoi();
if (roi == null) return;
isImageRoi = roi instanceof ImageRoi;
if (isImageRoi)
((ImageRoi)roi).setZeroTransparent(true);
if ( e.isAltDown() || e.isShiftDown() )
moveRoi(e.getX(), e.getY());
else
rotateRoi(e.getX(), e.getY());
}
public void mouseReleased(ImagePlus imp, MouseEvent e) {
if (Recorder.record) {
Roi roi = imp.getRoi();
int n = roi.getPolygon().npoints;
if (n<=20 && roi.getType()!=Roi.LINE)
Recorder.recordRoi(roi);
else if (n>20)
Recorder.recordString("// Selection has "+n+" points, too many to record.\n");
}
}
public void showOptionsDialog() {
IJ.log("PlugInTool MouseRoiRotator Peter Haub dipsystems.de 10'2015");
}
public String getToolName() {
return "Selection Rotator (press alt or shift to move)";
}
public String getToolIcon() {
return "C037D06D15D16D24D25D26D27D28D29D2aD33D34D35D36D37D3bD3cD42D43D44D45D46D47D48D4cD4dDb1Db2Db6Db7Db8Db9DbaDbbDbcDc2Dc3Dc7Dc8Dc9DcaDcbDd4Dd5Dd6Dd7Dd8Dd9DdaDe8De9Df8CabcD05D14D17D18D19D1aD23D2bD2cD32D3dD41D51D52D53D54D55D56D57D58Da6Da7Da8Da9DaaDabDacDadDbdDc1DccDd2Dd3DdbDe4De5De6De7DeaDf9";
}
void rotateRoi(int sx, int sy){
xNew = ic.offScreenX(sx);
yNew = ic.offScreenY(sy);
dx1 = centerX - xNew;
dy1 = centerY - yNew;
dx2 = centerX - startX;
dy2 = centerY - startY;
if (defaultRotationMode == UPDOWNROTATION){
l1 = Math.sqrt(dx1*dx1 + dy1*dy1);
l2 = Math.sqrt(dx2*dx2 + dy2*dy2);
l = (l1 + l2)/2.0;
dy = yNew - startY;
if (l==0 || dy==0) return;
phi = Math.atan2(dy, l);
}
else{
phi1 = Math.atan2(dy1, dx1);
phi2 = Math.atan2(dy2, dx2);
phi = phi1 - phi2;
if (phi == 0 || phi == Double.NaN) return;
}
startX = xNew;
startY = yNew;
newRoi = RoiRotator.rotate(roi, phi*180/Math.PI);
if (isImageRoi)
imp2.draw();
else
imp2.setRoi(newRoi);
}
void moveRoi(int sx, int sy){
xNew = ic.offScreenX(sx);
yNew = ic.offScreenY(sy);
dx1 = xNew - startX;
dy1 = yNew - startY;
if (dx1==0 && dy2==0) return;
startX = xNew;
startY = yNew;
dx = roi.getXBase() + dx1;
dy = roi.getYBase() + dy1;
roi.setLocation(dx, dy);
imp2.draw();
}
}
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