protected void moveHandle(int sx, int sy) {
double asp;
if (clipboard != null) return;
int ox = ic.offScreenX(sx);
int oy = ic.offScreenY(sy);
// IJ.log("moveHandle: "+activeHandle+" "+ox+" "+oy);
int x1 = x, y1 = y, x2 = x + width, y2 = y + height, xc = x + width / 2, yc = y + height / 2;
int w2 = (int) (0.14645 * width);
int h2 = (int) (0.14645 * height);
if (width > 7 && height > 7) {
asp = (double) width / (double) height;
asp_bk = asp;
} else {
asp = asp_bk;
}
switch (activeHandle) {
case 0:
x = ox - w2;
y = oy - h2;
break;
case 1:
y = oy;
break;
case 2:
x2 = ox + w2;
y = oy - h2;
break;
case 3:
x2 = ox;
break;
case 4:
x2 = ox + w2;
y2 = oy + h2;
break;
case 5:
y2 = oy;
break;
case 6:
x = ox - w2;
y2 = oy + h2;
break;
case 7:
x = ox;
break;
}
// if (x<0) x=0; if (y<0) y=0;
if (x < x2) width = x2 - x;
else {
width = 1;
x = x2;
}
if (y < y2) height = y2 - y;
else {
height = 1;
y = y2;
}
if (center) {
switch (activeHandle) {
case 0:
width = (xc - x) * 2;
height = (yc - y) * 2;
break;
case 1:
height = (yc - y) * 2;
break;
case 2:
width = (x2 - xc) * 2;
x = x2 - width;
height = (yc - y) * 2;
break;
case 3:
width = (x2 - xc) * 2;
x = x2 - width;
break;
case 4:
width = (x2 - xc) * 2;
x = x2 - width;
height = (y2 - yc) * 2;
y = y2 - height;
break;
case 5:
height = (y2 - yc) * 2;
y = y2 - height;
break;
case 6:
width = (xc - x) * 2;
height = (y2 - yc) * 2;
y = y2 - height;
break;
case 7:
width = (xc - x) * 2;
break;
}
if (x >= x2) {
width = 1;
x = x2 = xc;
}
if (y >= y2) {
height = 1;
y = y2 = yc;
}
}
if (constrain) {
if (activeHandle == 1 || activeHandle == 5) width = height;
else height = width;
if (x >= x2) {
width = 1;
x = x2 = xc;
}
if (y >= y2) {
height = 1;
y = y2 = yc;
}
switch (activeHandle) {
case 0:
x = x2 - width;
y = y2 - height;
break;
case 1:
x = xc - width / 2;
y = y2 - height;
break;
case 2:
y = y2 - height;
break;
case 3:
y = yc - height / 2;
break;
case 5:
x = xc - width / 2;
break;
case 6:
x = x2 - width;
break;
case 7:
y = yc - height / 2;
x = x2 - width;
break;
}
if (center) {
x = xc - width / 2;
y = yc - height / 2;
}
}
if (aspect && !constrain) {
if (activeHandle == 1 || activeHandle == 5) width = (int) Math.rint((double) height * asp);
else height = (int) Math.rint((double) width / asp);
switch (activeHandle) {
case 0:
x = x2 - width;
y = y2 - height;
break;
case 1:
x = xc - width / 2;
y = y2 - height;
break;
case 2:
y = y2 - height;
break;
case 3:
y = yc - height / 2;
break;
case 5:
x = xc - width / 2;
break;
case 6:
x = x2 - width;
break;
case 7:
y = yc - height / 2;
x = x2 - width;
break;
}
if (center) {
x = xc - width / 2;
y = yc - height / 2;
}
// Attempt to preserve aspect ratio when roi very small:
if (width < 8) {
if (width < 1) width = 1;
height = (int) Math.rint((double) width / asp_bk);
}
if (height < 8) {
if (height < 1) height = 1;
width = (int) Math.rint((double) height * asp_bk);
}
}
updateClipRect();
imp.draw(clipX, clipY, clipWidth, clipHeight);
oldX = x;
oldY = y;
oldWidth = width;
oldHeight = height;
cachedMask = null;
}
