/ OrbitControls.js
OrbitControls.js
1 ( function () { 2 3 // Unlike TrackballControls, it maintains the "up" direction object.up (+Y by default). 4 // 5 // Orbit - left mouse / touch: one-finger move 6 // Zoom - middle mouse, or mousewheel / touch: two-finger spread or squish 7 // Pan - right mouse, or left mouse + ctrl/meta/shiftKey, or arrow keys / touch: two-finger move 8 9 const _changeEvent = { 10 type: 'change' 11 }; 12 const _startEvent = { 13 type: 'start' 14 }; 15 const _endEvent = { 16 type: 'end' 17 }; 18 19 class OrbitControls extends THREE.EventDispatcher { 20 21 constructor( object, domElement ) { 22 23 super(); 24 if ( domElement === undefined ) console.warn( 'THREE.OrbitControls: The second parameter "domElement" is now mandatory.' ); 25 if ( domElement === document ) console.error( 'THREE.OrbitControls: "document" should not be used as the target "domElement". Please use "renderer.domElement" instead.' ); 26 this.object = object; 27 this.domElement = domElement; 28 this.domElement.style.touchAction = 'none'; // disable touch scroll 29 // Set to false to disable this control 30 31 this.enabled = true; // "target" sets the location of focus, where the object orbits around 32 33 this.target = new THREE.Vector3(); // How far you can dolly in and out ( PerspectiveCamera only ) 34 35 this.minDistance = 0; 36 this.maxDistance = Infinity; // How far you can zoom in and out ( OrthographicCamera only ) 37 38 this.minZoom = 0; 39 this.maxZoom = Infinity; // How far you can orbit vertically, upper and lower limits. 40 // Range is 0 to Math.PI radians. 41 42 this.minPolarAngle = 0; // radians 43 44 this.maxPolarAngle = Math.PI; // radians 45 // How far you can orbit horizontally, upper and lower limits. 46 // If set, the interval [ min, max ] must be a sub-interval of [ - 2 PI, 2 PI ], with ( max - min < 2 PI ) 47 48 this.minAzimuthAngle = - Infinity; // radians 49 50 this.maxAzimuthAngle = Infinity; // radians 51 // Set to true to enable damping (inertia) 52 // If damping is enabled, you must call controls.update() in your animation loop 53 54 this.enableDamping = false; 55 this.dampingFactor = 0.05; // This option actually enables dollying in and out; left as "zoom" for backwards compatibility. 56 // Set to false to disable zooming 57 58 this.enableZoom = true; 59 this.zoomSpeed = 1.0; // Set to false to disable rotating 60 61 this.enableRotate = true; 62 this.rotateSpeed = 1.0; // Set to false to disable panning 63 64 this.enablePan = true; 65 this.panSpeed = 1.0; 66 this.screenSpacePanning = true; // if false, pan orthogonal to world-space direction camera.up 67 68 this.keyPanSpeed = 7.0; // pixels moved per arrow key push 69 // Set to true to automatically rotate around the target 70 // If auto-rotate is enabled, you must call controls.update() in your animation loop 71 72 this.autoRotate = false; 73 this.autoRotateSpeed = 2.0; // 30 seconds per orbit when fps is 60 74 // The four arrow keys 75 76 this.keys = { 77 LEFT: 'ArrowLeft', 78 UP: 'ArrowUp', 79 RIGHT: 'ArrowRight', 80 BOTTOM: 'ArrowDown' 81 }; // Mouse buttons 82 83 this.mouseButtons = { 84 LEFT: THREE.MOUSE.ROTATE, 85 MIDDLE: THREE.MOUSE.DOLLY, 86 RIGHT: THREE.MOUSE.PAN 87 }; // Touch fingers 88 89 this.touches = { 90 ONE: THREE.TOUCH.ROTATE, 91 TWO: THREE.TOUCH.DOLLY_PAN 92 }; // for reset 93 94 this.target0 = this.target.clone(); 95 this.position0 = this.object.position.clone(); 96 this.zoom0 = this.object.zoom; // the target DOM element for key events 97 98 this._domElementKeyEvents = null; // 99 // public methods 100 // 101 102 this.getPolarAngle = function () { 103 104 return spherical.phi; 105 106 }; 107 108 this.getAzimuthalAngle = function () { 109 110 return spherical.theta; 111 112 }; 113 114 this.getDistance = function () { 115 116 return this.object.position.distanceTo( this.target ); 117 118 }; 119 120 this.listenToKeyEvents = function ( domElement ) { 121 122 domElement.addEventListener( 'keydown', onKeyDown ); 123 this._domElementKeyEvents = domElement; 124 125 }; 126 127 this.saveState = function () { 128 129 scope.target0.copy( scope.target ); 130 scope.position0.copy( scope.object.position ); 131 scope.zoom0 = scope.object.zoom; 132 133 }; 134 135 this.reset = function () { 136 137 scope.target.copy( scope.target0 ); 138 scope.object.position.copy( scope.position0 ); 139 scope.object.zoom = scope.zoom0; 140 scope.object.updateProjectionMatrix(); 141 scope.dispatchEvent( _changeEvent ); 142 scope.update(); 143 state = STATE.NONE; 144 145 }; // this method is exposed, but perhaps it would be better if we can make it private... 146 147 148 this.update = function () { 149 150 const offset = new THREE.Vector3(); // so camera.up is the orbit axis 151 152 const quat = new THREE.Quaternion().setFromUnitVectors( object.up, new THREE.Vector3( 0, 1, 0 ) ); 153 const quatInverse = quat.clone().invert(); 154 const lastPosition = new THREE.Vector3(); 155 const lastQuaternion = new THREE.Quaternion(); 156 const twoPI = 2 * Math.PI; 157 return function update() { 158 159 const position = scope.object.position; 160 offset.copy( position ).sub( scope.target ); // rotate offset to "y-axis-is-up" space 161 162 offset.applyQuaternion( quat ); // angle from z-axis around y-axis 163 164 spherical.setFromVector3( offset ); 165 166 if ( scope.autoRotate && state === STATE.NONE ) { 167 168 rotateLeft( getAutoRotationAngle() ); 169 170 } 171 172 if ( scope.enableDamping ) { 173 174 spherical.theta += sphericalDelta.theta * scope.dampingFactor; 175 spherical.phi += sphericalDelta.phi * scope.dampingFactor; 176 177 } else { 178 179 spherical.theta += sphericalDelta.theta; 180 spherical.phi += sphericalDelta.phi; 181 182 } // restrict theta to be between desired limits 183 184 185 let min = scope.minAzimuthAngle; 186 let max = scope.maxAzimuthAngle; 187 188 if ( isFinite( min ) && isFinite( max ) ) { 189 190 if ( min < - Math.PI ) min += twoPI; else if ( min > Math.PI ) min -= twoPI; 191 if ( max < - Math.PI ) max += twoPI; else if ( max > Math.PI ) max -= twoPI; 192 193 if ( min <= max ) { 194 195 spherical.theta = Math.max( min, Math.min( max, spherical.theta ) ); 196 197 } else { 198 199 spherical.theta = spherical.theta > ( min + max ) / 2 ? Math.max( min, spherical.theta ) : Math.min( max, spherical.theta ); 200 201 } 202 203 } // restrict phi to be between desired limits 204 205 206 spherical.phi = Math.max( scope.minPolarAngle, Math.min( scope.maxPolarAngle, spherical.phi ) ); 207 spherical.makeSafe(); 208 spherical.radius *= scale; // restrict radius to be between desired limits 209 210 spherical.radius = Math.max( scope.minDistance, Math.min( scope.maxDistance, spherical.radius ) ); // move target to panned location 211 212 if ( scope.enableDamping === true ) { 213 214 scope.target.addScaledVector( panOffset, scope.dampingFactor ); 215 216 } else { 217 218 scope.target.add( panOffset ); 219 220 } 221 222 offset.setFromSpherical( spherical ); // rotate offset back to "camera-up-vector-is-up" space 223 224 offset.applyQuaternion( quatInverse ); 225 position.copy( scope.target ).add( offset ); 226 scope.object.lookAt( scope.target ); 227 228 if ( scope.enableDamping === true ) { 229 230 sphericalDelta.theta *= 1 - scope.dampingFactor; 231 sphericalDelta.phi *= 1 - scope.dampingFactor; 232 panOffset.multiplyScalar( 1 - scope.dampingFactor ); 233 234 } else { 235 236 sphericalDelta.set( 0, 0, 0 ); 237 panOffset.set( 0, 0, 0 ); 238 239 } 240 241 scale = 1; // update condition is: 242 // min(camera displacement, camera rotation in radians)^2 > EPS 243 // using small-angle approximation cos(x/2) = 1 - x^2 / 8 244 245 if ( zoomChanged || lastPosition.distanceToSquared( scope.object.position ) > EPS || 8 * ( 1 - lastQuaternion.dot( scope.object.quaternion ) ) > EPS ) { 246 247 scope.dispatchEvent( _changeEvent ); 248 lastPosition.copy( scope.object.position ); 249 lastQuaternion.copy( scope.object.quaternion ); 250 zoomChanged = false; 251 return true; 252 253 } 254 255 return false; 256 257 }; 258 259 }(); 260 261 this.dispose = function () { 262 263 scope.domElement.removeEventListener( 'contextmenu', onContextMenu ); 264 scope.domElement.removeEventListener( 'pointerdown', onPointerDown ); 265 scope.domElement.removeEventListener( 'pointercancel', onPointerCancel ); 266 scope.domElement.removeEventListener( 'wheel', onMouseWheel ); 267 scope.domElement.removeEventListener( 'pointermove', onPointerMove ); 268 scope.domElement.removeEventListener( 'pointerup', onPointerUp ); 269 270 if ( scope._domElementKeyEvents !== null ) { 271 272 scope._domElementKeyEvents.removeEventListener( 'keydown', onKeyDown ); 273 274 } //scope.dispatchEvent( { type: 'dispose' } ); // should this be added here? 275 276 }; // 277 // internals 278 // 279 280 281 const scope = this; 282 const STATE = { 283 NONE: - 1, 284 ROTATE: 0, 285 DOLLY: 1, 286 PAN: 2, 287 TOUCH_ROTATE: 3, 288 TOUCH_PAN: 4, 289 TOUCH_DOLLY_PAN: 5, 290 TOUCH_DOLLY_ROTATE: 6 291 }; 292 let state = STATE.NONE; 293 const EPS = 0.000001; // current position in spherical coordinates 294 295 const spherical = new THREE.Spherical(); 296 const sphericalDelta = new THREE.Spherical(); 297 let scale = 1; 298 const panOffset = new THREE.Vector3(); 299 let zoomChanged = false; 300 const rotateStart = new THREE.Vector2(); 301 const rotateEnd = new THREE.Vector2(); 302 const rotateDelta = new THREE.Vector2(); 303 const panStart = new THREE.Vector2(); 304 const panEnd = new THREE.Vector2(); 305 const panDelta = new THREE.Vector2(); 306 const dollyStart = new THREE.Vector2(); 307 const dollyEnd = new THREE.Vector2(); 308 const dollyDelta = new THREE.Vector2(); 309 const pointers = []; 310 const pointerPositions = {}; 311 312 function getAutoRotationAngle() { 313 314 return 2 * Math.PI / 60 / 60 * scope.autoRotateSpeed; 315 316 } 317 318 function getZoomScale() { 319 320 return Math.pow( 0.95, scope.zoomSpeed ); 321 322 } 323 324 function rotateLeft( angle ) { 325 326 sphericalDelta.theta -= angle; 327 328 } 329 330 function rotateUp( angle ) { 331 332 sphericalDelta.phi -= angle; 333 334 } 335 336 const panLeft = function () { 337 338 const v = new THREE.Vector3(); 339 return function panLeft( distance, objectMatrix ) { 340 341 v.setFromMatrixColumn( objectMatrix, 0 ); // get X column of objectMatrix 342 343 v.multiplyScalar( - distance ); 344 panOffset.add( v ); 345 346 }; 347 348 }(); 349 350 const panUp = function () { 351 352 const v = new THREE.Vector3(); 353 return function panUp( distance, objectMatrix ) { 354 355 if ( scope.screenSpacePanning === true ) { 356 357 v.setFromMatrixColumn( objectMatrix, 1 ); 358 359 } else { 360 361 v.setFromMatrixColumn( objectMatrix, 0 ); 362 v.crossVectors( scope.object.up, v ); 363 364 } 365 366 v.multiplyScalar( distance ); 367 panOffset.add( v ); 368 369 }; 370 371 }(); // deltaX and deltaY are in pixels; right and down are positive 372 373 374 const pan = function () { 375 376 const offset = new THREE.Vector3(); 377 return function pan( deltaX, deltaY ) { 378 379 const element = scope.domElement; 380 381 if ( scope.object.isPerspectiveCamera ) { 382 383 // perspective 384 const position = scope.object.position; 385 offset.copy( position ).sub( scope.target ); 386 let targetDistance = offset.length(); // half of the fov is center to top of screen 387 388 targetDistance *= Math.tan( scope.object.fov / 2 * Math.PI / 180.0 ); // we use only clientHeight here so aspect ratio does not distort speed 389 390 panLeft( 2 * deltaX * targetDistance / element.clientHeight, scope.object.matrix ); 391 panUp( 2 * deltaY * targetDistance / element.clientHeight, scope.object.matrix ); 392 393 } else if ( scope.object.isOrthographicCamera ) { 394 395 // orthographic 396 panLeft( deltaX * ( scope.object.right - scope.object.left ) / scope.object.zoom / element.clientWidth, scope.object.matrix ); 397 panUp( deltaY * ( scope.object.top - scope.object.bottom ) / scope.object.zoom / element.clientHeight, scope.object.matrix ); 398 399 } else { 400 401 // camera neither orthographic nor perspective 402 console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - pan disabled.' ); 403 scope.enablePan = false; 404 405 } 406 407 }; 408 409 }(); 410 411 function dollyOut( dollyScale ) { 412 413 if ( scope.object.isPerspectiveCamera ) { 414 415 scale /= dollyScale; 416 417 } else if ( scope.object.isOrthographicCamera ) { 418 419 scope.object.zoom = Math.max( scope.minZoom, Math.min( scope.maxZoom, scope.object.zoom * dollyScale ) ); 420 scope.object.updateProjectionMatrix(); 421 zoomChanged = true; 422 423 } else { 424 425 console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' ); 426 scope.enableZoom = false; 427 428 } 429 430 } 431 432 function dollyIn( dollyScale ) { 433 434 if ( scope.object.isPerspectiveCamera ) { 435 436 scale *= dollyScale; 437 438 } else if ( scope.object.isOrthographicCamera ) { 439 440 scope.object.zoom = Math.max( scope.minZoom, Math.min( scope.maxZoom, scope.object.zoom / dollyScale ) ); 441 scope.object.updateProjectionMatrix(); 442 zoomChanged = true; 443 444 } else { 445 446 console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' ); 447 scope.enableZoom = false; 448 449 } 450 451 } // 452 // event callbacks - update the object state 453 // 454 455 456 function handleMouseDownRotate( event ) { 457 458 rotateStart.set( event.clientX, event.clientY ); 459 460 } 461 462 function handleMouseDownDolly( event ) { 463 464 dollyStart.set( event.clientX, event.clientY ); 465 466 } 467 468 function handleMouseDownPan( event ) { 469 470 panStart.set( event.clientX, event.clientY ); 471 472 } 473 474 function handleMouseMoveRotate( event ) { 475 476 rotateEnd.set( event.clientX, event.clientY ); 477 rotateDelta.subVectors( rotateEnd, rotateStart ).multiplyScalar( scope.rotateSpeed ); 478 const element = scope.domElement; 479 rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientHeight ); // yes, height 480 481 rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight ); 482 rotateStart.copy( rotateEnd ); 483 scope.update(); 484 485 } 486 487 function handleMouseMoveDolly( event ) { 488 489 dollyEnd.set( event.clientX, event.clientY ); 490 dollyDelta.subVectors( dollyEnd, dollyStart ); 491 492 if ( dollyDelta.y > 0 ) { 493 494 dollyOut( getZoomScale() ); 495 496 } else if ( dollyDelta.y < 0 ) { 497 498 dollyIn( getZoomScale() ); 499 500 } 501 502 dollyStart.copy( dollyEnd ); 503 scope.update(); 504 505 } 506 507 function handleMouseMovePan( event ) { 508 509 panEnd.set( event.clientX, event.clientY ); 510 panDelta.subVectors( panEnd, panStart ).multiplyScalar( scope.panSpeed ); 511 pan( panDelta.x, panDelta.y ); 512 panStart.copy( panEnd ); 513 scope.update(); 514 515 } 516 517 function handleMouseWheel( event ) { 518 519 if ( event.deltaY < 0 ) { 520 521 dollyIn( getZoomScale() ); 522 523 } else if ( event.deltaY > 0 ) { 524 525 dollyOut( getZoomScale() ); 526 527 } 528 529 scope.update(); 530 531 } 532 533 function handleKeyDown( event ) { 534 535 let needsUpdate = false; 536 537 switch ( event.code ) { 538 539 case scope.keys.UP: 540 pan( 0, scope.keyPanSpeed ); 541 needsUpdate = true; 542 break; 543 544 case scope.keys.BOTTOM: 545 pan( 0, - scope.keyPanSpeed ); 546 needsUpdate = true; 547 break; 548 549 case scope.keys.LEFT: 550 pan( scope.keyPanSpeed, 0 ); 551 needsUpdate = true; 552 break; 553 554 case scope.keys.RIGHT: 555 pan( - scope.keyPanSpeed, 0 ); 556 needsUpdate = true; 557 break; 558 559 } 560 561 if ( needsUpdate ) { 562 563 // prevent the browser from scrolling on cursor keys 564 event.preventDefault(); 565 scope.update(); 566 567 } 568 569 } 570 571 function handleTouchStartRotate() { 572 573 if ( pointers.length === 1 ) { 574 575 rotateStart.set( pointers[ 0 ].pageX, pointers[ 0 ].pageY ); 576 577 } else { 578 579 const x = 0.5 * ( pointers[ 0 ].pageX + pointers[ 1 ].pageX ); 580 const y = 0.5 * ( pointers[ 0 ].pageY + pointers[ 1 ].pageY ); 581 rotateStart.set( x, y ); 582 583 } 584 585 } 586 587 function handleTouchStartPan() { 588 589 if ( pointers.length === 1 ) { 590 591 panStart.set( pointers[ 0 ].pageX, pointers[ 0 ].pageY ); 592 593 } else { 594 595 const x = 0.5 * ( pointers[ 0 ].pageX + pointers[ 1 ].pageX ); 596 const y = 0.5 * ( pointers[ 0 ].pageY + pointers[ 1 ].pageY ); 597 panStart.set( x, y ); 598 599 } 600 601 } 602 603 function handleTouchStartDolly() { 604 605 const dx = pointers[ 0 ].pageX - pointers[ 1 ].pageX; 606 const dy = pointers[ 0 ].pageY - pointers[ 1 ].pageY; 607 const distance = Math.sqrt( dx * dx + dy * dy ); 608 dollyStart.set( 0, distance ); 609 610 } 611 612 function handleTouchStartDollyPan() { 613 614 if ( scope.enableZoom ) handleTouchStartDolly(); 615 if ( scope.enablePan ) handleTouchStartPan(); 616 617 } 618 619 function handleTouchStartDollyRotate() { 620 621 if ( scope.enableZoom ) handleTouchStartDolly(); 622 if ( scope.enableRotate ) handleTouchStartRotate(); 623 624 } 625 626 function handleTouchMoveRotate( event ) { 627 628 if ( pointers.length == 1 ) { 629 630 rotateEnd.set( event.pageX, event.pageY ); 631 632 } else { 633 634 const position = getSecondPointerPosition( event ); 635 const x = 0.5 * ( event.pageX + position.x ); 636 const y = 0.5 * ( event.pageY + position.y ); 637 rotateEnd.set( x, y ); 638 639 } 640 641 rotateDelta.subVectors( rotateEnd, rotateStart ).multiplyScalar( scope.rotateSpeed ); 642 const element = scope.domElement; 643 rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientHeight ); // yes, height 644 645 rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight ); 646 rotateStart.copy( rotateEnd ); 647 648 } 649 650 function handleTouchMovePan( event ) { 651 652 if ( pointers.length === 1 ) { 653 654 panEnd.set( event.pageX, event.pageY ); 655 656 } else { 657 658 const position = getSecondPointerPosition( event ); 659 const x = 0.5 * ( event.pageX + position.x ); 660 const y = 0.5 * ( event.pageY + position.y ); 661 panEnd.set( x, y ); 662 663 } 664 665 panDelta.subVectors( panEnd, panStart ).multiplyScalar( scope.panSpeed ); 666 pan( panDelta.x, panDelta.y ); 667 panStart.copy( panEnd ); 668 669 } 670 671 function handleTouchMoveDolly( event ) { 672 673 const position = getSecondPointerPosition( event ); 674 const dx = event.pageX - position.x; 675 const dy = event.pageY - position.y; 676 const distance = Math.sqrt( dx * dx + dy * dy ); 677 dollyEnd.set( 0, distance ); 678 dollyDelta.set( 0, Math.pow( dollyEnd.y / dollyStart.y, scope.zoomSpeed ) ); 679 dollyOut( dollyDelta.y ); 680 dollyStart.copy( dollyEnd ); 681 682 } 683 684 function handleTouchMoveDollyPan( event ) { 685 686 if ( scope.enableZoom ) handleTouchMoveDolly( event ); 687 if ( scope.enablePan ) handleTouchMovePan( event ); 688 689 } 690 691 function handleTouchMoveDollyRotate( event ) { 692 693 if ( scope.enableZoom ) handleTouchMoveDolly( event ); 694 if ( scope.enableRotate ) handleTouchMoveRotate( event ); 695 696 } // 697 // event handlers - FSM: listen for events and reset state 698 // 699 700 701 function onPointerDown( event ) { 702 703 if ( scope.enabled === false ) return; 704 705 if ( pointers.length === 0 ) { 706 707 scope.domElement.setPointerCapture( event.pointerId ); 708 scope.domElement.addEventListener( 'pointermove', onPointerMove ); 709 scope.domElement.addEventListener( 'pointerup', onPointerUp ); 710 711 } // 712 713 714 addPointer( event ); 715 716 if ( event.pointerType === 'touch' ) { 717 718 onTouchStart( event ); 719 720 } else { 721 722 onMouseDown( event ); 723 724 } 725 726 } 727 728 function onPointerMove( event ) { 729 730 if ( scope.enabled === false ) return; 731 732 if ( event.pointerType === 'touch' ) { 733 734 onTouchMove( event ); 735 736 } else { 737 738 onMouseMove( event ); 739 740 } 741 742 } 743 744 function onPointerUp( event ) { 745 746 removePointer( event ); 747 748 if ( pointers.length === 0 ) { 749 750 scope.domElement.releasePointerCapture( event.pointerId ); 751 scope.domElement.removeEventListener( 'pointermove', onPointerMove ); 752 scope.domElement.removeEventListener( 'pointerup', onPointerUp ); 753 754 } 755 756 scope.dispatchEvent( _endEvent ); 757 state = STATE.NONE; 758 759 } 760 761 function onPointerCancel( event ) { 762 763 removePointer( event ); 764 765 } 766 767 function onMouseDown( event ) { 768 769 let mouseAction; 770 771 switch ( event.button ) { 772 773 case 0: 774 mouseAction = scope.mouseButtons.LEFT; 775 break; 776 777 case 1: 778 mouseAction = scope.mouseButtons.MIDDLE; 779 break; 780 781 case 2: 782 mouseAction = scope.mouseButtons.RIGHT; 783 break; 784 785 default: 786 mouseAction = - 1; 787 788 } 789 790 switch ( mouseAction ) { 791 792 case THREE.MOUSE.DOLLY: 793 if ( scope.enableZoom === false ) return; 794 handleMouseDownDolly( event ); 795 state = STATE.DOLLY; 796 break; 797 798 case THREE.MOUSE.ROTATE: 799 if ( event.ctrlKey || event.metaKey || event.shiftKey ) { 800 801 if ( scope.enablePan === false ) return; 802 handleMouseDownPan( event ); 803 state = STATE.PAN; 804 805 } else { 806 807 if ( scope.enableRotate === false ) return; 808 handleMouseDownRotate( event ); 809 state = STATE.ROTATE; 810 811 } 812 813 break; 814 815 case THREE.MOUSE.PAN: 816 if ( event.ctrlKey || event.metaKey || event.shiftKey ) { 817 818 if ( scope.enableRotate === false ) return; 819 handleMouseDownRotate( event ); 820 state = STATE.ROTATE; 821 822 } else { 823 824 if ( scope.enablePan === false ) return; 825 handleMouseDownPan( event ); 826 state = STATE.PAN; 827 828 } 829 830 break; 831 832 default: 833 state = STATE.NONE; 834 835 } 836 837 if ( state !== STATE.NONE ) { 838 839 scope.dispatchEvent( _startEvent ); 840 841 } 842 843 } 844 845 function onMouseMove( event ) { 846 847 if ( scope.enabled === false ) return; 848 849 switch ( state ) { 850 851 case STATE.ROTATE: 852 if ( scope.enableRotate === false ) return; 853 handleMouseMoveRotate( event ); 854 break; 855 856 case STATE.DOLLY: 857 if ( scope.enableZoom === false ) return; 858 handleMouseMoveDolly( event ); 859 break; 860 861 case STATE.PAN: 862 if ( scope.enablePan === false ) return; 863 handleMouseMovePan( event ); 864 break; 865 866 } 867 868 } 869 870 function onMouseWheel( event ) { 871 872 if ( scope.enabled === false || scope.enableZoom === false || state !== STATE.NONE ) return; 873 event.preventDefault(); 874 scope.dispatchEvent( _startEvent ); 875 handleMouseWheel( event ); 876 scope.dispatchEvent( _endEvent ); 877 878 } 879 880 function onKeyDown( event ) { 881 882 if ( scope.enabled === false || scope.enablePan === false ) return; 883 handleKeyDown( event ); 884 885 } 886 887 function onTouchStart( event ) { 888 889 trackPointer( event ); 890 891 switch ( pointers.length ) { 892 893 case 1: 894 switch ( scope.touches.ONE ) { 895 896 case THREE.TOUCH.ROTATE: 897 if ( scope.enableRotate === false ) return; 898 handleTouchStartRotate(); 899 state = STATE.TOUCH_ROTATE; 900 break; 901 902 case THREE.TOUCH.PAN: 903 if ( scope.enablePan === false ) return; 904 handleTouchStartPan(); 905 state = STATE.TOUCH_PAN; 906 break; 907 908 default: 909 state = STATE.NONE; 910 911 } 912 913 break; 914 915 case 2: 916 switch ( scope.touches.TWO ) { 917 918 case THREE.TOUCH.DOLLY_PAN: 919 if ( scope.enableZoom === false && scope.enablePan === false ) return; 920 handleTouchStartDollyPan(); 921 state = STATE.TOUCH_DOLLY_PAN; 922 break; 923 924 case THREE.TOUCH.DOLLY_ROTATE: 925 if ( scope.enableZoom === false && scope.enableRotate === false ) return; 926 handleTouchStartDollyRotate(); 927 state = STATE.TOUCH_DOLLY_ROTATE; 928 break; 929 930 default: 931 state = STATE.NONE; 932 933 } 934 935 break; 936 937 default: 938 state = STATE.NONE; 939 940 } 941 942 if ( state !== STATE.NONE ) { 943 944 scope.dispatchEvent( _startEvent ); 945 946 } 947 948 } 949 950 function onTouchMove( event ) { 951 952 trackPointer( event ); 953 954 switch ( state ) { 955 956 case STATE.TOUCH_ROTATE: 957 if ( scope.enableRotate === false ) return; 958 handleTouchMoveRotate( event ); 959 scope.update(); 960 break; 961 962 case STATE.TOUCH_PAN: 963 if ( scope.enablePan === false ) return; 964 handleTouchMovePan( event ); 965 scope.update(); 966 break; 967 968 case STATE.TOUCH_DOLLY_PAN: 969 if ( scope.enableZoom === false && scope.enablePan === false ) return; 970 handleTouchMoveDollyPan( event ); 971 scope.update(); 972 break; 973 974 case STATE.TOUCH_DOLLY_ROTATE: 975 if ( scope.enableZoom === false && scope.enableRotate === false ) return; 976 handleTouchMoveDollyRotate( event ); 977 scope.update(); 978 break; 979 980 default: 981 state = STATE.NONE; 982 983 } 984 985 } 986 987 function onContextMenu( event ) { 988 989 if ( scope.enabled === false ) return; 990 event.preventDefault(); 991 992 } 993 994 function addPointer( event ) { 995 996 pointers.push( event ); 997 998 } 999 1000 function removePointer( event ) { 1001 1002 delete pointerPositions[ event.pointerId ]; 1003 1004 for ( let i = 0; i < pointers.length; i ++ ) { 1005 1006 if ( pointers[ i ].pointerId == event.pointerId ) { 1007 1008 pointers.splice( i, 1 ); 1009 return; 1010 1011 } 1012 1013 } 1014 1015 } 1016 1017 function trackPointer( event ) { 1018 1019 let position = pointerPositions[ event.pointerId ]; 1020 1021 if ( position === undefined ) { 1022 1023 position = new THREE.Vector2(); 1024 pointerPositions[ event.pointerId ] = position; 1025 1026 } 1027 1028 position.set( event.pageX, event.pageY ); 1029 1030 } 1031 1032 function getSecondPointerPosition( event ) { 1033 1034 const pointer = event.pointerId === pointers[ 0 ].pointerId ? pointers[ 1 ] : pointers[ 0 ]; 1035 return pointerPositions[ pointer.pointerId ]; 1036 1037 } // 1038 1039 1040 scope.domElement.addEventListener( 'contextmenu', onContextMenu ); 1041 scope.domElement.addEventListener( 'pointerdown', onPointerDown ); 1042 scope.domElement.addEventListener( 'pointercancel', onPointerCancel ); 1043 scope.domElement.addEventListener( 'wheel', onMouseWheel, { 1044 passive: false 1045 } ); // force an update at start 1046 1047 this.update(); 1048 1049 } 1050 1051 } // This set of controls performs orbiting, dollying (zooming), and panning. 1052 // Unlike TrackballControls, it maintains the "up" direction object.up (+Y by default). 1053 // This is very similar to OrbitControls, another set of touch behavior 1054 // 1055 // Orbit - right mouse, or left mouse + ctrl/meta/shiftKey / touch: two-finger rotate 1056 // Zoom - middle mouse, or mousewheel / touch: two-finger spread or squish 1057 // Pan - left mouse, or arrow keys / touch: one-finger move 1058 1059 1060 class MapControls extends OrbitControls { 1061 1062 constructor( object, domElement ) { 1063 1064 super( object, domElement ); 1065 this.screenSpacePanning = false; // pan orthogonal to world-space direction camera.up 1066 1067 this.mouseButtons.LEFT = THREE.MOUSE.PAN; 1068 this.mouseButtons.RIGHT = THREE.MOUSE.ROTATE; 1069 this.touches.ONE = THREE.TOUCH.PAN; 1070 this.touches.TWO = THREE.TOUCH.DOLLY_ROTATE; 1071 1072 } 1073 1074 } 1075 1076 THREE.MapControls = MapControls; 1077 THREE.OrbitControls = OrbitControls; 1078 1079 } )();