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Diffstat (limited to 'Keyboard V2 - Part 2 - PCB/pcb/OrbitControls.js')
| -rw-r--r-- | Keyboard V2 - Part 2 - PCB/pcb/OrbitControls.js | 1532 |
1 files changed, 1532 insertions, 0 deletions
diff --git a/Keyboard V2 - Part 2 - PCB/pcb/OrbitControls.js b/Keyboard V2 - Part 2 - PCB/pcb/OrbitControls.js new file mode 100644 index 0000000..d21c1eb --- /dev/null +++ b/Keyboard V2 - Part 2 - PCB/pcb/OrbitControls.js @@ -0,0 +1,1532 @@ +import { + EventDispatcher, + MOUSE, + Quaternion, + Spherical, + TOUCH, + Vector2, + Vector3, + Plane, + Ray, + MathUtils +} from 'three'; + +// OrbitControls performs orbiting, dollying (zooming), and panning. +// Unlike TrackballControls, it maintains the "up" direction object.up (+Y by default). +// +// Orbit - left mouse / touch: one-finger move +// Zoom - middle mouse, or mousewheel / touch: two-finger spread or squish +// Pan - right mouse, or left mouse + ctrl/meta/shiftKey, or arrow keys / touch: two-finger move + +const _changeEvent = { type: 'change' }; +const _startEvent = { type: 'start' }; +const _endEvent = { type: 'end' }; +const _ray = new Ray(); +const _plane = new Plane(); +const TILT_LIMIT = Math.cos( 70 * MathUtils.DEG2RAD ); + +class OrbitControls extends EventDispatcher { + + constructor( object, domElement ) { + + super(); + + this.object = object; + this.domElement = domElement; + this.domElement.style.touchAction = 'none'; // disable touch scroll + + // Set to false to disable this control + this.enabled = true; + + // "target" sets the location of focus, where the object orbits around + this.target = new Vector3(); + + // Sets the 3D cursor (similar to Blender), from which the maxTargetRadius takes effect + this.cursor = new Vector3(); + + // How far you can dolly in and out ( PerspectiveCamera only ) + this.minDistance = 0; + this.maxDistance = Infinity; + + // How far you can zoom in and out ( OrthographicCamera only ) + this.minZoom = 0; + this.maxZoom = Infinity; + + // Limit camera target within a spherical area around the cursor + this.minTargetRadius = 0; + this.maxTargetRadius = Infinity; + + // How far you can orbit vertically, upper and lower limits. + // Range is 0 to Math.PI radians. + this.minPolarAngle = 0; // radians + this.maxPolarAngle = Math.PI; // radians + + // How far you can orbit horizontally, upper and lower limits. + // If set, the interval [ min, max ] must be a sub-interval of [ - 2 PI, 2 PI ], with ( max - min < 2 PI ) + this.minAzimuthAngle = - Infinity; // radians + this.maxAzimuthAngle = Infinity; // radians + + // Set to true to enable damping (inertia) + // If damping is enabled, you must call controls.update() in your animation loop + this.enableDamping = false; + this.dampingFactor = 0.05; + + // This option actually enables dollying in and out; left as "zoom" for backwards compatibility. + // Set to false to disable zooming + this.enableZoom = true; + this.zoomSpeed = 1.0; + + // Set to false to disable rotating + this.enableRotate = true; + this.rotateSpeed = 1.0; + + // Set to false to disable panning + this.enablePan = true; + this.panSpeed = 1.0; + this.screenSpacePanning = true; // if false, pan orthogonal to world-space direction camera.up + this.keyPanSpeed = 7.0; // pixels moved per arrow key push + this.zoomToCursor = false; + + // Set to true to automatically rotate around the target + // If auto-rotate is enabled, you must call controls.update() in your animation loop + this.autoRotate = false; + this.autoRotateSpeed = 2.0; // 30 seconds per orbit when fps is 60 + + // The four arrow keys + this.keys = { LEFT: 'ArrowLeft', UP: 'ArrowUp', RIGHT: 'ArrowRight', BOTTOM: 'ArrowDown' }; + + // Mouse buttons + this.mouseButtons = { LEFT: MOUSE.ROTATE, MIDDLE: MOUSE.DOLLY, RIGHT: MOUSE.PAN }; + + // Touch fingers + this.touches = { ONE: TOUCH.ROTATE, TWO: TOUCH.DOLLY_PAN }; + + // for reset + this.target0 = this.target.clone(); + this.position0 = this.object.position.clone(); + this.zoom0 = this.object.zoom; + + // the target DOM element for key events + this._domElementKeyEvents = null; + + // + // public methods + // + + this.getPolarAngle = function () { + + return spherical.phi; + + }; + + this.getAzimuthalAngle = function () { + + return spherical.theta; + + }; + + this.getDistance = function () { + + return this.object.position.distanceTo( this.target ); + + }; + + this.listenToKeyEvents = function ( domElement ) { + + domElement.addEventListener( 'keydown', onKeyDown ); + this._domElementKeyEvents = domElement; + + }; + + this.stopListenToKeyEvents = function () { + + this._domElementKeyEvents.removeEventListener( 'keydown', onKeyDown ); + this._domElementKeyEvents = null; + + }; + + this.saveState = function () { + + scope.target0.copy( scope.target ); + scope.position0.copy( scope.object.position ); + scope.zoom0 = scope.object.zoom; + + }; + + this.reset = function () { + + scope.target.copy( scope.target0 ); + scope.object.position.copy( scope.position0 ); + scope.object.zoom = scope.zoom0; + + scope.object.updateProjectionMatrix(); + scope.dispatchEvent( _changeEvent ); + + scope.update(); + + state = STATE.NONE; + + }; + + // this method is exposed, but perhaps it would be better if we can make it private... + this.update = function () { + + const offset = new Vector3(); + + // so camera.up is the orbit axis + const quat = new Quaternion().setFromUnitVectors( object.up, new Vector3( 0, 1, 0 ) ); + const quatInverse = quat.clone().invert(); + + const lastPosition = new Vector3(); + const lastQuaternion = new Quaternion(); + const lastTargetPosition = new Vector3(); + + const twoPI = 2 * Math.PI; + + return function update( deltaTime = null ) { + + const position = scope.object.position; + + offset.copy( position ).sub( scope.target ); + + // rotate offset to "y-axis-is-up" space + offset.applyQuaternion( quat ); + + // angle from z-axis around y-axis + spherical.setFromVector3( offset ); + + if ( scope.autoRotate && state === STATE.NONE ) { + + rotateLeft( getAutoRotationAngle( deltaTime ) ); + + } + + if ( scope.enableDamping ) { + + spherical.theta += sphericalDelta.theta * scope.dampingFactor; + spherical.phi += sphericalDelta.phi * scope.dampingFactor; + + } else { + + spherical.theta += sphericalDelta.theta; + spherical.phi += sphericalDelta.phi; + + } + + // restrict theta to be between desired limits + + let min = scope.minAzimuthAngle; + let max = scope.maxAzimuthAngle; + + if ( isFinite( min ) && isFinite( max ) ) { + + if ( min < - Math.PI ) min += twoPI; else if ( min > Math.PI ) min -= twoPI; + + if ( max < - Math.PI ) max += twoPI; else if ( max > Math.PI ) max -= twoPI; + + if ( min <= max ) { + + spherical.theta = Math.max( min, Math.min( max, spherical.theta ) ); + + } else { + + spherical.theta = ( spherical.theta > ( min + max ) / 2 ) ? + Math.max( min, spherical.theta ) : + Math.min( max, spherical.theta ); + + } + + } + + // restrict phi to be between desired limits + spherical.phi = Math.max( scope.minPolarAngle, Math.min( scope.maxPolarAngle, spherical.phi ) ); + + spherical.makeSafe(); + + + // move target to panned location + + if ( scope.enableDamping === true ) { + + scope.target.addScaledVector( panOffset, scope.dampingFactor ); + + } else { + + scope.target.add( panOffset ); + + } + + // Limit the target distance from the cursor to create a sphere around the center of interest + scope.target.sub( scope.cursor ); + scope.target.clampLength( scope.minTargetRadius, scope.maxTargetRadius ); + scope.target.add( scope.cursor ); + + let zoomChanged = false; + // adjust the camera position based on zoom only if we're not zooming to the cursor or if it's an ortho camera + // we adjust zoom later in these cases + if ( scope.zoomToCursor && performCursorZoom || scope.object.isOrthographicCamera ) { + + spherical.radius = clampDistance( spherical.radius ); + + } else { + + const prevRadius = spherical.radius; + spherical.radius = clampDistance( spherical.radius * scale ); + zoomChanged = prevRadius != spherical.radius; + + } + + offset.setFromSpherical( spherical ); + + // rotate offset back to "camera-up-vector-is-up" space + offset.applyQuaternion( quatInverse ); + + position.copy( scope.target ).add( offset ); + + scope.object.lookAt( scope.target ); + + if ( scope.enableDamping === true ) { + + sphericalDelta.theta *= ( 1 - scope.dampingFactor ); + sphericalDelta.phi *= ( 1 - scope.dampingFactor ); + + panOffset.multiplyScalar( 1 - scope.dampingFactor ); + + } else { + + sphericalDelta.set( 0, 0, 0 ); + + panOffset.set( 0, 0, 0 ); + + } + + // adjust camera position + if ( scope.zoomToCursor && performCursorZoom ) { + + let newRadius = null; + if ( scope.object.isPerspectiveCamera ) { + + // move the camera down the pointer ray + // this method avoids floating point error + const prevRadius = offset.length(); + newRadius = clampDistance( prevRadius * scale ); + + const radiusDelta = prevRadius - newRadius; + scope.object.position.addScaledVector( dollyDirection, radiusDelta ); + scope.object.updateMatrixWorld(); + + zoomChanged = !! radiusDelta; + + } else if ( scope.object.isOrthographicCamera ) { + + // adjust the ortho camera position based on zoom changes + const mouseBefore = new Vector3( mouse.x, mouse.y, 0 ); + mouseBefore.unproject( scope.object ); + + const prevZoom = scope.object.zoom; + scope.object.zoom = Math.max( scope.minZoom, Math.min( scope.maxZoom, scope.object.zoom / scale ) ); + scope.object.updateProjectionMatrix(); + + zoomChanged = prevZoom !== scope.object.zoom; + + const mouseAfter = new Vector3( mouse.x, mouse.y, 0 ); + mouseAfter.unproject( scope.object ); + + scope.object.position.sub( mouseAfter ).add( mouseBefore ); + scope.object.updateMatrixWorld(); + + newRadius = offset.length(); + + } else { + + console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - zoom to cursor disabled.' ); + scope.zoomToCursor = false; + + } + + // handle the placement of the target + if ( newRadius !== null ) { + + if ( this.screenSpacePanning ) { + + // position the orbit target in front of the new camera position + scope.target.set( 0, 0, - 1 ) + .transformDirection( scope.object.matrix ) + .multiplyScalar( newRadius ) + .add( scope.object.position ); + + } else { + + // get the ray and translation plane to compute target + _ray.origin.copy( scope.object.position ); + _ray.direction.set( 0, 0, - 1 ).transformDirection( scope.object.matrix ); + + // if the camera is 20 degrees above the horizon then don't adjust the focus target to avoid + // extremely large values + if ( Math.abs( scope.object.up.dot( _ray.direction ) ) < TILT_LIMIT ) { + + object.lookAt( scope.target ); + + } else { + + _plane.setFromNormalAndCoplanarPoint( scope.object.up, scope.target ); + _ray.intersectPlane( _plane, scope.target ); + + } + + } + + } + + } else if ( scope.object.isOrthographicCamera ) { + + const prevZoom = scope.object.zoom; + scope.object.zoom = Math.max( scope.minZoom, Math.min( scope.maxZoom, scope.object.zoom / scale ) ); + + if ( prevZoom !== scope.object.zoom ) { + + scope.object.updateProjectionMatrix(); + zoomChanged = true; + + } + + } + + scale = 1; + performCursorZoom = false; + + // update condition is: + // min(camera displacement, camera rotation in radians)^2 > EPS + // using small-angle approximation cos(x/2) = 1 - x^2 / 8 + + if ( zoomChanged || + lastPosition.distanceToSquared( scope.object.position ) > EPS || + 8 * ( 1 - lastQuaternion.dot( scope.object.quaternion ) ) > EPS || + lastTargetPosition.distanceToSquared( scope.target ) > EPS ) { + + scope.dispatchEvent( _changeEvent ); + + lastPosition.copy( scope.object.position ); + lastQuaternion.copy( scope.object.quaternion ); + lastTargetPosition.copy( scope.target ); + + return true; + + } + + return false; + + }; + + }(); + + this.dispose = function () { + + scope.domElement.removeEventListener( 'contextmenu', onContextMenu ); + + scope.domElement.removeEventListener( 'pointerdown', onPointerDown ); + scope.domElement.removeEventListener( 'pointercancel', onPointerUp ); + scope.domElement.removeEventListener( 'wheel', onMouseWheel ); + + scope.domElement.removeEventListener( 'pointermove', onPointerMove ); + scope.domElement.removeEventListener( 'pointerup', onPointerUp ); + + const document = scope.domElement.getRootNode(); // offscreen canvas compatibility + + document.removeEventListener( 'keydown', interceptControlDown, { capture: true } ); + + if ( scope._domElementKeyEvents !== null ) { + + scope._domElementKeyEvents.removeEventListener( 'keydown', onKeyDown ); + scope._domElementKeyEvents = null; + + } + + //scope.dispatchEvent( { type: 'dispose' } ); // should this be added here? + + }; + + // + // internals + // + + const scope = this; + + const STATE = { + NONE: - 1, + ROTATE: 0, + DOLLY: 1, + PAN: 2, + TOUCH_ROTATE: 3, + TOUCH_PAN: 4, + TOUCH_DOLLY_PAN: 5, + TOUCH_DOLLY_ROTATE: 6 + }; + + let state = STATE.NONE; + + const EPS = 0.000001; + + // current position in spherical coordinates + const spherical = new Spherical(); + const sphericalDelta = new Spherical(); + + let scale = 1; + const panOffset = new Vector3(); + + const rotateStart = new Vector2(); + const rotateEnd = new Vector2(); + const rotateDelta = new Vector2(); + + const panStart = new Vector2(); + const panEnd = new Vector2(); + const panDelta = new Vector2(); + + const dollyStart = new Vector2(); + const dollyEnd = new Vector2(); + const dollyDelta = new Vector2(); + + const dollyDirection = new Vector3(); + const mouse = new Vector2(); + let performCursorZoom = false; + + const pointers = []; + const pointerPositions = {}; + + let controlActive = false; + + function getAutoRotationAngle( deltaTime ) { + + if ( deltaTime !== null ) { + + return ( 2 * Math.PI / 60 * scope.autoRotateSpeed ) * deltaTime; + + } else { + + return 2 * Math.PI / 60 / 60 * scope.autoRotateSpeed; + + } + + } + + function getZoomScale( delta ) { + + const normalizedDelta = Math.abs( delta * 0.01 ); + return Math.pow( 0.95, scope.zoomSpeed * normalizedDelta ); + + } + + function rotateLeft( angle ) { + + sphericalDelta.theta -= angle; + + } + + function rotateUp( angle ) { + + sphericalDelta.phi -= angle; + + } + + const panLeft = function () { + + const v = new Vector3(); + + return function panLeft( distance, objectMatrix ) { + + v.setFromMatrixColumn( objectMatrix, 0 ); // get X column of objectMatrix + v.multiplyScalar( - distance ); + + panOffset.add( v ); + + }; + + }(); + + const panUp = function () { + + const v = new Vector3(); + + return function panUp( distance, objectMatrix ) { + + if ( scope.screenSpacePanning === true ) { + + v.setFromMatrixColumn( objectMatrix, 1 ); + + } else { + + v.setFromMatrixColumn( objectMatrix, 0 ); + v.crossVectors( scope.object.up, v ); + + } + + v.multiplyScalar( distance ); + + panOffset.add( v ); + + }; + + }(); + + // deltaX and deltaY are in pixels; right and down are positive + const pan = function () { + + const offset = new Vector3(); + + return function pan( deltaX, deltaY ) { + + const element = scope.domElement; + + if ( scope.object.isPerspectiveCamera ) { + + // perspective + const position = scope.object.position; + offset.copy( position ).sub( scope.target ); + let targetDistance = offset.length(); + + // half of the fov is center to top of screen + targetDistance *= Math.tan( ( scope.object.fov / 2 ) * Math.PI / 180.0 ); + + // we use only clientHeight here so aspect ratio does not distort speed + panLeft( 2 * deltaX * targetDistance / element.clientHeight, scope.object.matrix ); + panUp( 2 * deltaY * targetDistance / element.clientHeight, scope.object.matrix ); + + } else if ( scope.object.isOrthographicCamera ) { + + // orthographic + panLeft( deltaX * ( scope.object.right - scope.object.left ) / scope.object.zoom / element.clientWidth, scope.object.matrix ); + panUp( deltaY * ( scope.object.top - scope.object.bottom ) / scope.object.zoom / element.clientHeight, scope.object.matrix ); + + } else { + + // camera neither orthographic nor perspective + console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - pan disabled.' ); + scope.enablePan = false; + + } + + }; + + }(); + + function dollyOut( dollyScale ) { + + if ( scope.object.isPerspectiveCamera || scope.object.isOrthographicCamera ) { + + scale /= dollyScale; + + } else { + + console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' ); + scope.enableZoom = false; + + } + + } + + function dollyIn( dollyScale ) { + + if ( scope.object.isPerspectiveCamera || scope.object.isOrthographicCamera ) { + + scale *= dollyScale; + + } else { + + console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' ); + scope.enableZoom = false; + + } + + } + + function updateZoomParameters( x, y ) { + + if ( ! scope.zoomToCursor ) { + + return; + + } + + performCursorZoom = true; + + const rect = scope.domElement.getBoundingClientRect(); + const dx = x - rect.left; + const dy = y - rect.top; + const w = rect.width; + const h = rect.height; + + mouse.x = ( dx / w ) * 2 - 1; + mouse.y = - ( dy / h ) * 2 + 1; + + dollyDirection.set( mouse.x, mouse.y, 1 ).unproject( scope.object ).sub( scope.object.position ).normalize(); + + } + + function clampDistance( dist ) { + + return Math.max( scope.minDistance, Math.min( scope.maxDistance, dist ) ); + + } + + // + // event callbacks - update the object state + // + + function handleMouseDownRotate( event ) { + + rotateStart.set( event.clientX, event.clientY ); + + } + + function handleMouseDownDolly( event ) { + + updateZoomParameters( event.clientX, event.clientX ); + dollyStart.set( event.clientX, event.clientY ); + + } + + function handleMouseDownPan( event ) { + + panStart.set( event.clientX, event.clientY ); + + } + + function handleMouseMoveRotate( event ) { + + rotateEnd.set( event.clientX, event.clientY ); + + rotateDelta.subVectors( rotateEnd, rotateStart ).multiplyScalar( scope.rotateSpeed ); + + const element = scope.domElement; + + rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientHeight ); // yes, height + + rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight ); + + rotateStart.copy( rotateEnd ); + + scope.update(); + + } + + function handleMouseMoveDolly( event ) { + + dollyEnd.set( event.clientX, event.clientY ); + + dollyDelta.subVectors( dollyEnd, dollyStart ); + + if ( dollyDelta.y > 0 ) { + + dollyOut( getZoomScale( dollyDelta.y ) ); + + } else if ( dollyDelta.y < 0 ) { + + dollyIn( getZoomScale( dollyDelta.y ) ); + + } + + dollyStart.copy( dollyEnd ); + + scope.update(); + + } + + function handleMouseMovePan( event ) { + + panEnd.set( event.clientX, event.clientY ); + + panDelta.subVectors( panEnd, panStart ).multiplyScalar( scope.panSpeed ); + + pan( panDelta.x, panDelta.y ); + + panStart.copy( panEnd ); + + scope.update(); + + } + + function handleMouseWheel( event ) { + + updateZoomParameters( event.clientX, event.clientY ); + + if ( event.deltaY < 0 ) { + + dollyIn( getZoomScale( event.deltaY ) ); + + } else if ( event.deltaY > 0 ) { + + dollyOut( getZoomScale( event.deltaY ) ); + + } + + scope.update(); + + } + + function handleKeyDown( event ) { + + let needsUpdate = false; + + switch ( event.code ) { + + case scope.keys.UP: + + if ( event.ctrlKey || event.metaKey || event.shiftKey ) { + + rotateUp( 2 * Math.PI * scope.rotateSpeed / scope.domElement.clientHeight ); + + } else { + + pan( 0, scope.keyPanSpeed ); + + } + + needsUpdate = true; + break; + + case scope.keys.BOTTOM: + + if ( event.ctrlKey || event.metaKey || event.shiftKey ) { + + rotateUp( - 2 * Math.PI * scope.rotateSpeed / scope.domElement.clientHeight ); + + } else { + + pan( 0, - scope.keyPanSpeed ); + + } + + needsUpdate = true; + break; + + case scope.keys.LEFT: + + if ( event.ctrlKey || event.metaKey || event.shiftKey ) { + + rotateLeft( 2 * Math.PI * scope.rotateSpeed / scope.domElement.clientHeight ); + + } else { + + pan( scope.keyPanSpeed, 0 ); + + } + + needsUpdate = true; + break; + + case scope.keys.RIGHT: + + if ( event.ctrlKey || event.metaKey || event.shiftKey ) { + + rotateLeft( - 2 * Math.PI * scope.rotateSpeed / scope.domElement.clientHeight ); + + } else { + + pan( - scope.keyPanSpeed, 0 ); + + } + + needsUpdate = true; + break; + + } + + if ( needsUpdate ) { + + // prevent the browser from scrolling on cursor keys + event.preventDefault(); + + scope.update(); + + } + + + } + + function handleTouchStartRotate( event ) { + + if ( pointers.length === 1 ) { + + rotateStart.set( event.pageX, event.pageY ); + + } else { + + const position = getSecondPointerPosition( event ); + + const x = 0.5 * ( event.pageX + position.x ); + const y = 0.5 * ( event.pageY + position.y ); + + rotateStart.set( x, y ); + + } + + } + + function handleTouchStartPan( event ) { + + if ( pointers.length === 1 ) { + + panStart.set( event.pageX, event.pageY ); + + } else { + + const position = getSecondPointerPosition( event ); + + const x = 0.5 * ( event.pageX + position.x ); + const y = 0.5 * ( event.pageY + position.y ); + + panStart.set( x, y ); + + } + + } + + function handleTouchStartDolly( event ) { + + const position = getSecondPointerPosition( event ); + + const dx = event.pageX - position.x; + const dy = event.pageY - position.y; + + const distance = Math.sqrt( dx * dx + dy * dy ); + + dollyStart.set( 0, distance ); + + } + + function handleTouchStartDollyPan( event ) { + + if ( scope.enableZoom ) handleTouchStartDolly( event ); + + if ( scope.enablePan ) handleTouchStartPan( event ); + + } + + function handleTouchStartDollyRotate( event ) { + + if ( scope.enableZoom ) handleTouchStartDolly( event ); + + if ( scope.enableRotate ) handleTouchStartRotate( event ); + + } + + function handleTouchMoveRotate( event ) { + + if ( pointers.length == 1 ) { + + rotateEnd.set( event.pageX, event.pageY ); + + } else { + + const position = getSecondPointerPosition( event ); + + const x = 0.5 * ( event.pageX + position.x ); + const y = 0.5 * ( event.pageY + position.y ); + + rotateEnd.set( x, y ); + + } + + rotateDelta.subVectors( rotateEnd, rotateStart ).multiplyScalar( scope.rotateSpeed ); + + const element = scope.domElement; + + rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientHeight ); // yes, height + + rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight ); + + rotateStart.copy( rotateEnd ); + + } + + function handleTouchMovePan( event ) { + + if ( pointers.length === 1 ) { + + panEnd.set( event.pageX, event.pageY ); + + } else { + + const position = getSecondPointerPosition( event ); + + const x = 0.5 * ( event.pageX + position.x ); + const y = 0.5 * ( event.pageY + position.y ); + + panEnd.set( x, y ); + + } + + panDelta.subVectors( panEnd, panStart ).multiplyScalar( scope.panSpeed ); + + pan( panDelta.x, panDelta.y ); + + panStart.copy( panEnd ); + + } + + function handleTouchMoveDolly( event ) { + + const position = getSecondPointerPosition( event ); + + const dx = event.pageX - position.x; + const dy = event.pageY - position.y; + + const distance = Math.sqrt( dx * dx + dy * dy ); + + dollyEnd.set( 0, distance ); + + dollyDelta.set( 0, Math.pow( dollyEnd.y / dollyStart.y, scope.zoomSpeed ) ); + + dollyOut( dollyDelta.y ); + + dollyStart.copy( dollyEnd ); + + const centerX = ( event.pageX + position.x ) * 0.5; + const centerY = ( event.pageY + position.y ) * 0.5; + + updateZoomParameters( centerX, centerY ); + + } + + function handleTouchMoveDollyPan( event ) { + + if ( scope.enableZoom ) handleTouchMoveDolly( event ); + + if ( scope.enablePan ) handleTouchMovePan( event ); + + } + + function handleTouchMoveDollyRotate( event ) { + + if ( scope.enableZoom ) handleTouchMoveDolly( event ); + + if ( scope.enableRotate ) handleTouchMoveRotate( event ); + + } + + // + // event handlers - FSM: listen for events and reset state + // + + function onPointerDown( event ) { + + if ( scope.enabled === false ) return; + + if ( pointers.length === 0 ) { + + scope.domElement.setPointerCapture( event.pointerId ); + + scope.domElement.addEventListener( 'pointermove', onPointerMove ); + scope.domElement.addEventListener( 'pointerup', onPointerUp ); + + } + + // + + if ( isTrackingPointer( event ) ) return; + + // + + addPointer( event ); + + if ( event.pointerType === 'touch' ) { + + onTouchStart( event ); + + } else { + + onMouseDown( event ); + + } + + } + + function onPointerMove( event ) { + + if ( scope.enabled === false ) return; + + if ( event.pointerType === 'touch' ) { + + onTouchMove( event ); + + } else { + + onMouseMove( event ); + + } + + } + + function onPointerUp( event ) { + + removePointer( event ); + + switch ( pointers.length ) { + + case 0: + + scope.domElement.releasePointerCapture( event.pointerId ); + + scope.domElement.removeEventListener( 'pointermove', onPointerMove ); + scope.domElement.removeEventListener( 'pointerup', onPointerUp ); + + scope.dispatchEvent( _endEvent ); + + state = STATE.NONE; + + break; + + case 1: + + const pointerId = pointers[ 0 ]; + const position = pointerPositions[ pointerId ]; + + // minimal placeholder event - allows state correction on pointer-up + onTouchStart( { pointerId: pointerId, pageX: position.x, pageY: position.y } ); + + break; + + } + + } + + function onMouseDown( event ) { + + let mouseAction; + + switch ( event.button ) { + + case 0: + + mouseAction = scope.mouseButtons.LEFT; + break; + + case 1: + + mouseAction = scope.mouseButtons.MIDDLE; + break; + + case 2: + + mouseAction = scope.mouseButtons.RIGHT; + break; + + default: + + mouseAction = - 1; + + } + + switch ( mouseAction ) { + + case MOUSE.DOLLY: + + if ( scope.enableZoom === false ) return; + + handleMouseDownDolly( event ); + + state = STATE.DOLLY; + + break; + + case MOUSE.ROTATE: + + if ( event.ctrlKey || event.metaKey || event.shiftKey ) { + + if ( scope.enablePan === false ) return; + + handleMouseDownPan( event ); + + state = STATE.PAN; + + } else { + + if ( scope.enableRotate === false ) return; + + handleMouseDownRotate( event ); + + state = STATE.ROTATE; + + } + + break; + + case MOUSE.PAN: + + if ( event.ctrlKey || event.metaKey || event.shiftKey ) { + + if ( scope.enableRotate === false ) return; + + handleMouseDownRotate( event ); + + state = STATE.ROTATE; + + } else { + + if ( scope.enablePan === false ) return; + + handleMouseDownPan( event ); + + state = STATE.PAN; + + } + + break; + + default: + + state = STATE.NONE; + + } + + if ( state !== STATE.NONE ) { + + scope.dispatchEvent( _startEvent ); + + } + + } + + function onMouseMove( event ) { + + switch ( state ) { + + case STATE.ROTATE: + + if ( scope.enableRotate === false ) return; + + handleMouseMoveRotate( event ); + + break; + + case STATE.DOLLY: + + if ( scope.enableZoom === false ) return; + + handleMouseMoveDolly( event ); + + break; + + case STATE.PAN: + + if ( scope.enablePan === false ) return; + + handleMouseMovePan( event ); + + break; + + } + + } + + function onMouseWheel( event ) { + + if ( scope.enabled === false || scope.enableZoom === false || state !== STATE.NONE ) return; + + event.preventDefault(); + + scope.dispatchEvent( _startEvent ); + + handleMouseWheel( customWheelEvent( event ) ); + + scope.dispatchEvent( _endEvent ); + + } + + function customWheelEvent( event ) { + + const mode = event.deltaMode; + + // minimal wheel event altered to meet delta-zoom demand + const newEvent = { + clientX: event.clientX, + clientY: event.clientY, + deltaY: event.deltaY, + }; + + switch ( mode ) { + + case 1: // LINE_MODE + newEvent.deltaY *= 16; + break; + + case 2: // PAGE_MODE + newEvent.deltaY *= 100; + break; + + } + + // detect if event was triggered by pinching + if ( event.ctrlKey && ! controlActive ) { + + newEvent.deltaY *= 10; + + } + + return newEvent; + + } + + function interceptControlDown( event ) { + + if ( event.key === 'Control' ) { + + controlActive = true; + + + const document = scope.domElement.getRootNode(); // offscreen canvas compatibility + + document.addEventListener( 'keyup', interceptControlUp, { passive: true, capture: true } ); + + } + + } + + function interceptControlUp( event ) { + + if ( event.key === 'Control' ) { + + controlActive = false; + + + const document = scope.domElement.getRootNode(); // offscreen canvas compatibility + + document.removeEventListener( 'keyup', interceptControlUp, { passive: true, capture: true } ); + + } + + } + + function onKeyDown( event ) { + + if ( scope.enabled === false || scope.enablePan === false ) return; + + handleKeyDown( event ); + + } + + function onTouchStart( event ) { + + trackPointer( event ); + + switch ( pointers.length ) { + + case 1: + + switch ( scope.touches.ONE ) { + + case TOUCH.ROTATE: + + if ( scope.enableRotate === false ) return; + + handleTouchStartRotate( event ); + + state = STATE.TOUCH_ROTATE; + + break; + + case TOUCH.PAN: + + if ( scope.enablePan === false ) return; + + handleTouchStartPan( event ); + + state = STATE.TOUCH_PAN; + + break; + + default: + + state = STATE.NONE; + + } + + break; + + case 2: + + switch ( scope.touches.TWO ) { + + case TOUCH.DOLLY_PAN: + + if ( scope.enableZoom === false && scope.enablePan === false ) return; + + handleTouchStartDollyPan( event ); + + state = STATE.TOUCH_DOLLY_PAN; + + break; + + case TOUCH.DOLLY_ROTATE: + + if ( scope.enableZoom === false && scope.enableRotate === false ) return; + + handleTouchStartDollyRotate( event ); + + state = STATE.TOUCH_DOLLY_ROTATE; + + break; + + default: + + state = STATE.NONE; + + } + + break; + + default: + + state = STATE.NONE; + + } + + if ( state !== STATE.NONE ) { + + scope.dispatchEvent( _startEvent ); + + } + + } + + function onTouchMove( event ) { + + trackPointer( event ); + + switch ( state ) { + + case STATE.TOUCH_ROTATE: + + if ( scope.enableRotate === false ) return; + + handleTouchMoveRotate( event ); + + scope.update(); + + break; + + case STATE.TOUCH_PAN: + + if ( scope.enablePan === false ) return; + + handleTouchMovePan( event ); + + scope.update(); + + break; + + case STATE.TOUCH_DOLLY_PAN: + + if ( scope.enableZoom === false && scope.enablePan === false ) return; + + handleTouchMoveDollyPan( event ); + + scope.update(); + + break; + + case STATE.TOUCH_DOLLY_ROTATE: + + if ( scope.enableZoom === false && scope.enableRotate === false ) return; + + handleTouchMoveDollyRotate( event ); + + scope.update(); + + break; + + default: + + state = STATE.NONE; + + } + + } + + function onContextMenu( event ) { + + if ( scope.enabled === false ) return; + + event.preventDefault(); + + } + + function addPointer( event ) { + + pointers.push( event.pointerId ); + + } + + function removePointer( event ) { + + delete pointerPositions[ event.pointerId ]; + + for ( let i = 0; i < pointers.length; i ++ ) { + + if ( pointers[ i ] == event.pointerId ) { + + pointers.splice( i, 1 ); + return; + + } + + } + + } + + function isTrackingPointer( event ) { + + for ( let i = 0; i < pointers.length; i ++ ) { + + if ( pointers[ i ] == event.pointerId ) return true; + + } + + return false; + + } + + function trackPointer( event ) { + + let position = pointerPositions[ event.pointerId ]; + + if ( position === undefined ) { + + position = new Vector2(); + pointerPositions[ event.pointerId ] = position; + + } + + position.set( event.pageX, event.pageY ); + + } + + function getSecondPointerPosition( event ) { + + const pointerId = ( event.pointerId === pointers[ 0 ] ) ? pointers[ 1 ] : pointers[ 0 ]; + + return pointerPositions[ pointerId ]; + + } + + // + + scope.domElement.addEventListener( 'contextmenu', onContextMenu ); + + scope.domElement.addEventListener( 'pointerdown', onPointerDown ); + scope.domElement.addEventListener( 'pointercancel', onPointerUp ); + scope.domElement.addEventListener( 'wheel', onMouseWheel, { passive: false } ); + + const document = scope.domElement.getRootNode(); // offscreen canvas compatibility + + document.addEventListener( 'keydown', interceptControlDown, { passive: true, capture: true } ); + + // force an update at start + + this.update(); + + } + +} + +export { OrbitControls }; |