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package ij.plugin.filter;
import ij.*;
import ij.gui.*;
import ij.process.*;
import java.awt.*;
import java.awt.geom.*;
/** This plugin implements the Image/Translate command. */
public class Translator implements ExtendedPlugInFilter, DialogListener {
private int flags = DOES_ALL|PARALLELIZE_STACKS;
private static double xOffset = 15;
private static double yOffset = 15;
private ImagePlus imp;
private GenericDialog gd;
private PlugInFilterRunner pfr;
private static int interpolationMethod = ImageProcessor.NONE;
private String[] methods = ImageProcessor.getInterpolationMethods();
private boolean previewing;
private Overlay origOverlay;
private boolean overlayOnly;
public int setup(String arg, ImagePlus imp) {
this.imp = imp;
if (imp!=null) {
origOverlay = imp.getOverlay();
Undo.saveOverlay(imp);
}
return flags;
}
public void run(ImageProcessor ip) {
ip.setInterpolationMethod(interpolationMethod);
if (!overlayOnly || origOverlay==null)
ip.translate(xOffset, yOffset);
if (origOverlay!=null) {
Overlay overlay = origOverlay.duplicate();
overlay.translate(xOffset, yOffset);
imp.setOverlay(overlay);
}
}
public int showDialog(ImagePlus imp, String command, PlugInFilterRunner pfr) {
this.pfr = pfr;
int digits = xOffset==(int)xOffset&&yOffset==(int)yOffset?1:3;
if (IJ.isMacro())
interpolationMethod = ImageProcessor.NONE;
gd = new GenericDialog("Translate");
gd.addSlider("X offset:", -100, 100, xOffset, 0.1);
gd.addSlider("Y offset:", -100, 100, xOffset, 0.1);
gd.addChoice("Interpolation:", methods, methods[interpolationMethod]);
if (origOverlay!=null)
gd.addCheckbox("Overlay only", false);
gd.addPreviewCheckbox(pfr);
gd.addDialogListener(this);
previewing = true;
gd.showDialog();
if (gd.wasCanceled()) {
imp.setOverlay(origOverlay);
return DONE;
}
previewing = false;
return IJ.setupDialog(imp, flags);
}
public boolean dialogItemChanged(GenericDialog gd, AWTEvent e) {
xOffset = gd.getNextNumber();
yOffset = gd.getNextNumber();
interpolationMethod = gd.getNextChoiceIndex();
if (origOverlay!=null)
overlayOnly = gd.getNextBoolean();
if (gd.invalidNumber()) {
if (gd.wasOKed()) IJ.error("Offset is invalid.");
return false;
}
return true;
}
public void setNPasses(int nPasses) {
}
}
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