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ROI -AND- operation when holding down shift and alt #115

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ROI -AND- operation when holding down shift and alt #115

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2ee381b
When drawing ROIs, alt and shift together now perform AND instead of …
aschain Mar 26, 2021
88d620c
Update Roi.java
aschain Mar 30, 2021
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5 changes: 3 additions & 2 deletions ij/gui/ImageCanvas.java
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Original file line number Diff line number Diff line change
Expand Up @@ -1447,9 +1447,10 @@ void setRoiModState(MouseEvent e, Roi roi, int handle) {
int tool = Toolbar.getToolId();
if (tool>Toolbar.FREEROI && tool!=Toolbar.WAND && tool!=Toolbar.POINT)
{roi.modState = Roi.NO_MODS; return;}
if (e.isShiftDown())
if (e.isShiftDown()){
roi.modState = Roi.ADD_TO_ROI;
else if (e.isAltDown())
if (e.isAltDown()) roi.modState = Roi.KEEP_WITHIN_ROI;
}else if (e.isAltDown())
roi.modState = Roi.SUBTRACT_FROM_ROI;
else
roi.modState = Roi.NO_MODS;
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9 changes: 6 additions & 3 deletions ij/gui/Roi.java
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Original file line number Diff line number Diff line change
Expand Up @@ -55,7 +55,7 @@ public class Roi extends Object implements Cloneable, java.io.Serializable, Iter
public static final int FERET_ARRAY_POINTOFFSET = 8; // Where point coordinates start in Feret array
private static final String NAMES_KEY = "group.names";

static final int NO_MODS=0, ADD_TO_ROI=1, SUBTRACT_FROM_ROI=2; // modification states
static final int NO_MODS=0, ADD_TO_ROI=1, SUBTRACT_FROM_ROI=2, KEEP_WITHIN_ROI=3; // modification states

int startX, startY, x, y, width, height;
double startXD, startYD;
Expand Down Expand Up @@ -1615,9 +1615,11 @@ void modifyRoi() {
s2 = (ShapeRoi)this;
else
s2 = new ShapeRoi(this);
if (previousRoi.modState==ADD_TO_ROI)
if (previousRoi.modState==ADD_TO_ROI) {
s1.or(s2);
else
}else if(previousRoi.modState==KEEP_WITHIN_ROI){
s1.and(s2);
}else
s1.not(s2);
previousRoi.modState = NO_MODS;
Roi roi2 = s1.trySimplify();
Expand Down Expand Up @@ -1658,6 +1660,7 @@ public void update(boolean add, boolean subtract) {
if (previousRoi==null) return;
if (add) {
previousRoi.modState = ADD_TO_ROI;
if(subtract) previousRoi.modState = KEEP_WITHIN_ROI;
modifyRoi();
} else if (subtract) {
previousRoi.modState = SUBTRACT_FROM_ROI;
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