(dx0, dy0)
| 346 | } |
| 347 | |
| 348 | function zoomMove(dx0, dy0) { |
| 349 | if(gd._transitioningWithDuration) { |
| 350 | return false; |
| 351 | } |
| 352 | |
| 353 | var x1 = Math.max(0, Math.min(pw, scaleX * dx0 + x0)); |
| 354 | var y1 = Math.max(0, Math.min(ph, scaleY * dy0 + y0)); |
| 355 | var dx = Math.abs(x1 - x0); |
| 356 | var dy = Math.abs(y1 - y0); |
| 357 | |
| 358 | box.l = Math.min(x0, x1); |
| 359 | box.r = Math.max(x0, x1); |
| 360 | box.t = Math.min(y0, y1); |
| 361 | box.b = Math.max(y0, y1); |
| 362 | |
| 363 | function noZoom() { |
| 364 | zoomMode = ''; |
| 365 | box.r = box.l; |
| 366 | box.t = box.b; |
| 367 | corners.attr('d', 'M0,0Z'); |
| 368 | } |
| 369 | |
| 370 | if(links.isSubplotConstrained) { |
| 371 | if(dx > MINZOOM || dy > MINZOOM) { |
| 372 | zoomMode = 'xy'; |
| 373 | if(dx / pw > dy / ph) { |
| 374 | dy = dx * ph / pw; |
| 375 | if(y0 > y1) box.t = y0 - dy; |
| 376 | else box.b = y0 + dy; |
| 377 | } else { |
| 378 | dx = dy * pw / ph; |
| 379 | if(x0 > x1) box.l = x0 - dx; |
| 380 | else box.r = x0 + dx; |
| 381 | } |
| 382 | corners.attr('d', xyCorners(box)); |
| 383 | } else { |
| 384 | noZoom(); |
| 385 | } |
| 386 | } else if(matches.isSubplotConstrained) { |
| 387 | if(dx > MINZOOM || dy > MINZOOM) { |
| 388 | zoomMode = 'xy'; |
| 389 | |
| 390 | var r0 = Math.min(box.l / pw, (ph - box.b) / ph); |
| 391 | var r1 = Math.max(box.r / pw, (ph - box.t) / ph); |
| 392 | |
| 393 | box.l = r0 * pw; |
| 394 | box.r = r1 * pw; |
| 395 | box.b = (1 - r0) * ph; |
| 396 | box.t = (1 - r1) * ph; |
| 397 | corners.attr('d', xyCorners(box)); |
| 398 | } else { |
| 399 | noZoom(); |
| 400 | } |
| 401 | } else if(!yActive || dy < Math.min(Math.max(dx * 0.6, MINDRAG), MINZOOM)) { |
| 402 | // look for small drags in one direction or the other, |
| 403 | // and only drag the other axis |
| 404 | |
| 405 | if(dx < MINDRAG || !xActive) { |
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