@SuppressWarnings("unchecked")
@Override
public T interpretMouseDragging(double[] spt, double[] ept) {
T croi = null; // return null if not a valid event
switch (status) {
case RMOVE:
croi = (T) roi.copy();
ept[0] -= spt[0];
ept[1] -= spt[1];
croi.addPoint(ept);
break;
case NONE:
croi = (T) roi.copy();
// croi.setEndPoint(ept);
break;
case REORIENT:
croi = reorient(ept);
break;
case RESIZE:
croi = resize(spt, ept);
break;
case ROTATE:
// croi = (T) roi.copy();
// double ang = croi.getAngleRelativeToMidPoint(ept);
// double[] mpt = croi.getMidPoint();
// croi.setAngle(ang);
// croi.setMidPoint(mpt);
break;
case CMOVE:
break;
case CRMOVE:
break;
}
if (croi == null) {
throw new UnsupportedOperationException("Not implemented yet");
}
return croi;
}
/**
* @param spt starting point
* @param pt
* @return resized ROI
*/
@SuppressWarnings("unchecked")
public T resize(double[] spt, double[] pt) {
T rroi = null;
if (!closed && handle == 4) return rroi;
rroi = (T) roi.copy();
pt[0] -= spt[0];
pt[1] -= spt[1];
switch (handle) {
case -1: // new definition
rroi.setPoint(spt);
break;
case 0: // focus/centre
rroi.addPoint(pt);
break;
case 1: // periapsis
if (rroi instanceof CircularROI) {
if (pt[0] == 0) break;
CircularROI lroi = (CircularROI) rroi;
// work out perpendicular displacement
double r = lroi.getRadius();
r -= pt[0];
if (r < 0) r = 0;
lroi.setRadius(r);
} else if (rroi instanceof OrientableROIBase) {
// work out perpendicular displacement
double a = rroi.getAngle();
double d = pt[0] * Math.cos(a) + pt[1] * Math.sin(a);
if (d == 0) break;
if (rroi instanceof EllipticalROI) {
EllipticalROI lroi = (EllipticalROI) rroi;
double r = lroi.getSemiAxis(0) - d;
if (r < 0) r = 0;
lroi.setSemiAxis(0, r);
} else if (rroi instanceof ParabolicROI) {
ParabolicROI lroi = (ParabolicROI) rroi;
double p = lroi.getFocalParameter() - d;
if (p < 0) p = 0;
lroi.setFocalParameter(p);
} else if (rroi instanceof HyperbolicROI) {
HyperbolicROI lroi = (HyperbolicROI) rroi;
double l = lroi.getSemilatusRectum();
double e = lroi.getEccentricity();
double x = l / (1 + e) - d;
e = l / x - 1;
if (e < 1) e = 1;
lroi.setEccentricity(e);
}
}
break;
case 2:
if (rroi instanceof CircularROI) {
if (pt[1] == 0) break;
CircularROI lroi = (CircularROI) rroi;
double r = lroi.getRadius();
r += pt[1];
if (r < 0) r = 0;
lroi.setRadius(r);
} else if (rroi instanceof OrientableROIBase) {
// work out perpendicular displacement
double a = rroi.getAngle();
double d = -pt[0] * Math.sin(a) + pt[1] * Math.cos(a);
if (d == 0) break;
if (rroi instanceof EllipticalROI) {
EllipticalROI lroi = (EllipticalROI) rroi;
// work out perpendicular displacement
double r = lroi.getSemiAxis(1) + d;
if (r < 0) r = 0;
lroi.setSemiAxis(1, r);
} else if (rroi instanceof ParabolicROI) {
ParabolicROI lroi = (ParabolicROI) rroi;
double p = lroi.getFocalParameter() + 0.5 * d;
if (p < 0) p = 0;
lroi.setFocalParameter(p);
} else if (rroi instanceof HyperbolicROI) {
HyperbolicROI lroi = (HyperbolicROI) rroi;
double l = lroi.getSemilatusRectum() + d;
if (l < 0) l = 0;
lroi.setSemilatusRectum(l);
}
}
break;
case 3:
if (rroi instanceof CircularROI) {
if (pt[1] == 0) break;
CircularROI lroi = (CircularROI) rroi;
double r = lroi.getRadius();
r -= pt[1];
if (r < 0) r = 0;
lroi.setRadius(r);
} else if (rroi instanceof OrientableROIBase) {
// work out perpendicular displacement
double a = rroi.getAngle();
double d = -pt[0] * Math.sin(a) + pt[1] * Math.cos(a);
if (d == 0) break;
if (rroi instanceof EllipticalROI) {
EllipticalROI lroi = (EllipticalROI) rroi;
// work out perpendicular displacement
double r = lroi.getSemiAxis(1) - d;
if (r < 0) r = 0;
lroi.setSemiAxis(1, r);
} else if (rroi instanceof ParabolicROI) {
ParabolicROI lroi = (ParabolicROI) rroi;
double p = lroi.getFocalParameter() - 0.5 * d;
if (p < 0) p = 0;
lroi.setFocalParameter(p);
} else if (rroi instanceof HyperbolicROI) {
HyperbolicROI lroi = (HyperbolicROI) rroi;
double l = lroi.getSemilatusRectum() - d;
if (l < 0) l = 0;
lroi.setSemilatusRectum(l);
}
}
break;
case 4:
if (closed) {
if (rroi instanceof CircularROI) {
if (pt[0] == 0) break;
CircularROI lroi = (CircularROI) rroi;
double r = lroi.getRadius();
r += pt[0];
if (r < 0) r = 0;
lroi.setRadius(r);
} else if (rroi instanceof EllipticalROI) {
EllipticalROI lroi = (EllipticalROI) rroi;
// work out perpendicular displacement
double a = lroi.getAngle();
double d = pt[0] * Math.cos(a) + pt[1] * Math.sin(a);
if (d == 0) break;
double r = lroi.getSemiAxis(0) + d;
if (r < 0) r = 0;
lroi.setSemiAxis(0, r);
}
}
break;
default:
break;
}
return rroi;
}
