feat(All):Initial

2025-10-04 23:36:07 +08:00
commit 2b4e5d2668
1321 changed files with 415958 additions and 0 deletions
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+import {
+	EventDispatcher,
+	Matrix4,
+	Plane,
+	Raycaster,
+	Vector2,
+	Vector3
+} from 'three';
+
+const _plane = new Plane();
+const _raycaster = new Raycaster();
+
+const _pointer = new Vector2();
+const _offset = new Vector3();
+const _intersection = new Vector3();
+const _worldPosition = new Vector3();
+const _inverseMatrix = new Matrix4();
+
+class DragControls extends EventDispatcher {
+	constructor( _objects, _camera, _domElement ) {
+		super();
+
+		_domElement.style.touchAction = 'none'; // disable touch scroll
+
+		let _selected = null, _hovered = null;
+
+		const _intersections = [];
+
+		//
+
+		let isMove = false;
+
+		const scope = this;
+
+		function activate() {
+			_domElement.addEventListener( 'pointermove', onPointerMove );
+			_domElement.addEventListener( 'pointerdown', onPointerDown );
+			_domElement.addEventListener( 'pointerup', onPointerCancel );
+			_domElement.addEventListener( 'pointerleave', onPointerCancel );
+		}
+
+		function deactivate() {
+			_domElement.removeEventListener( 'pointermove', onPointerMove );
+			_domElement.removeEventListener( 'pointerdown', onPointerDown );
+			_domElement.removeEventListener( 'pointerup', onPointerCancel );
+			_domElement.removeEventListener( 'pointerleave', onPointerCancel );
+
+			_domElement.style.cursor = '';
+		}
+
+		function dispose() {
+			deactivate();
+		}
+
+		function setObjects( objects ) {
+			_objects = objects;
+		}
+
+		function getObjects() {
+			return _objects;
+		}
+
+		function getRaycaster() {
+			return _raycaster;
+		}
+
+		function onPointerMove( event ) {
+
+			if ( !scope.enabled || !scope.enabledMove) return;
+
+			isMove = true;
+
+			updatePointer( event );
+
+			_raycaster.setFromCamera( _pointer, _camera );
+
+			if ( _selected ) {
+
+				if ( _raycaster.ray.intersectPlane( _plane, _intersection ) ) {
+
+					_selected.position.copy( _intersection.sub( _offset ).applyMatrix4( _inverseMatrix ) );
+
+				}
+
+				scope.dispatchEvent( { type: 'drag', object: _selected } );
+
+				return;
+
+			}
+
+			// hover support
+
+			if ( event.pointerType === 'mouse' || event.pointerType === 'pen' ) {
+
+				_intersections.length = 0;
+
+				_raycaster.setFromCamera( _pointer, _camera );
+				_raycaster.intersectObjects( _objects, true, _intersections );
+
+				if ( _intersections.length > 0 ) {
+
+					const object = _intersections[ 0 ].object;
+
+					_plane.setFromNormalAndCoplanarPoint( _camera.getWorldDirection( _plane.normal ), _worldPosition.setFromMatrixPosition( object.matrixWorld ) );
+
+					if ( _hovered !== object && _hovered !== null ) {
+
+						scope.dispatchEvent( { type: 'hoveroff', object: _hovered } );
+
+						_domElement.style.cursor = 'auto';
+						_hovered = null;
+
+					}
+
+					if ( _hovered !== object ) {
+
+						scope.dispatchEvent( { type: 'hoveron', object: object } );
+
+						_domElement.style.cursor = 'pointer';
+						_hovered = object;
+
+					}
+
+				} else {
+
+					if ( _hovered !== null ) {
+
+						scope.dispatchEvent( { type: 'hoveroff', object: _hovered } );
+
+						_domElement.style.cursor = 'auto';
+						_hovered = null;
+
+					}
+
+				}
+
+			}
+
+		}
+
+		function onPointerDown( event ) {
+			if (scope.enabled === false) return;
+
+			updatePointer(event);
+
+			_intersections.length = 0;
+
+			_raycaster.setFromCamera( _pointer, _camera );
+			let objects = _objects;
+			if(window.viewer.modules.transformControls){
+				if(window.viewer.modules.transformControls.object && window.viewer.modules.transformControls._gizmo){
+					// 如果有transformControls，就把transformControls的gizmo(仅箭头)也加进来
+					objects = objects.concat(Object.values(window.viewer.modules.transformControls._gizmo.picker));
+				}
+			}
+
+			_raycaster.intersectObjects( objects, true, _intersections );
+
+			if (_intersections.length > 0) {
+				_selected = (scope.transformGroup === true) ? _objects[ 0 ] : _intersections[0].object;
+
+				if(scope.enabledMove) {
+					_plane.setFromNormalAndCoplanarPoint(_camera.getWorldDirection(_plane.normal), _worldPosition.setFromMatrixPosition(_selected.matrixWorld));
+					if (_raycaster.ray.intersectPlane(_plane, _intersection)) {
+						_inverseMatrix.copy(_selected.parent.matrixWorld).invert();
+						_offset.copy(_intersection).sub(_worldPosition.setFromMatrixPosition(_selected.matrixWorld));
+					}
+
+					_domElement.style.cursor = 'move';
+				}
+				scope.dispatchEvent( { type: 'dragstart', object: _selected,e:event } );
+			}
+
+			isMove = false;
+		}
+
+		function onPointerCancel(event) {
+			if ( scope.enabled === false ) return;
+
+			if ( _selected ) {
+				scope.dispatchEvent( { type: 'dragend', object: _selected,e:event } );
+				_selected = null;
+			}else if(!isMove){
+				// 添加点击空白处的事件
+				scope.dispatchEvent( { type: 'clickblank',e:event } );
+			}
+
+			_domElement.style.cursor = _hovered ? 'pointer' : 'auto';
+		}
+
+		function updatePointer( event ) {
+			const rect = _domElement.getBoundingClientRect();
+
+			_pointer.x = ( event.clientX - rect.left ) / rect.width * 2 - 1;
+			_pointer.y = - ( event.clientY - rect.top ) / rect.height * 2 + 1;
+		}
+
+		activate();
+
+		// API
+
+		this.enabled = true;
+		this.enabledMove = true;
+		this.transformGroup = false;
+
+		this.activate = activate;
+		this.deactivate = deactivate;
+		this.dispose = dispose;
+		this.setObjects = setObjects;
+		this.getObjects = getObjects;
+		this.getRaycaster = getRaycaster;
+		this.setDomElement = (domElement) => {
+			_domElement = domElement;
+			_domElement.style.touchAction = 'none';
+
+			deactivate();
+			activate();
+		}
+
+	}
+
+}
+
+export { DragControls };