webvr js meetup initial commit

node_modules/three/examples/js/controls/DragControls.js

@@ -0,0 +1,193 @@
+/*
+ * @author zz85 / https://github.com/zz85
+ * @author mrdoob / http://mrdoob.com
+ * Running this will allow you to drag three.js objects around the screen.
+ */
+
+THREE.DragControls = function ( _objects, _camera, _domElement ) {
+
+	if ( _objects instanceof THREE.Camera ) {
+
+		console.warn( 'THREE.DragControls: Constructor now expects ( objects, camera, domElement )' );
+		var temp = _objects; _objects = _camera; _camera = temp;
+
+	}
+
+	var _plane = new THREE.Plane();
+	var _raycaster = new THREE.Raycaster();
+
+	var _mouse = new THREE.Vector2();
+	var _offset = new THREE.Vector3();
+	var _intersection = new THREE.Vector3();
+
+	var _selected = null, _hovered = null;
+
+	//
+
+	var scope = this;
+
+	function activate() {
+
+		_domElement.addEventListener( 'mousemove', onDocumentMouseMove, false );
+		_domElement.addEventListener( 'mousedown', onDocumentMouseDown, false );
+		_domElement.addEventListener( 'mouseup', onDocumentMouseUp, false );
+
+	}
+
+	function deactivate() {
+
+		_domElement.removeEventListener( 'mousemove', onDocumentMouseMove, false );
+		_domElement.removeEventListener( 'mousedown', onDocumentMouseDown, false );
+		_domElement.removeEventListener( 'mouseup', onDocumentMouseUp, false );
+
+	}
+
+	function dispose() {
+
+		deactivate();
+
+	}
+
+	function onDocumentMouseMove( event ) {
+
+		event.preventDefault();
+
+		_mouse.x = ( event.clientX / _domElement.width ) * 2 - 1;
+		_mouse.y = - ( event.clientY / _domElement.height ) * 2 + 1;
+
+		_raycaster.setFromCamera( _mouse, _camera );
+
+		if ( _selected && scope.enabled ) {
+
+			if ( _raycaster.ray.intersectPlane( _plane, _intersection ) ) {
+
+				_selected.position.copy( _intersection.sub( _offset ) );
+
+			}
+
+			scope.dispatchEvent( { type: 'drag', object: _selected } );
+
+			return;
+
+		}
+
+		_raycaster.setFromCamera( _mouse, _camera );
+
+		var intersects = _raycaster.intersectObjects( _objects );
+
+		if ( intersects.length > 0 ) {
+
+			var object = intersects[ 0 ].object;
+
+			_plane.setFromNormalAndCoplanarPoint( _camera.getWorldDirection( _plane.normal ), object.position );
+
+			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 onDocumentMouseDown( event ) {
+
+		event.preventDefault();
+
+		_raycaster.setFromCamera( _mouse, _camera );
+
+		var intersects = _raycaster.intersectObjects( _objects );
+
+		if ( intersects.length > 0 ) {
+
+			_selected = intersects[ 0 ].object;
+
+			if ( _raycaster.ray.intersectPlane( _plane, _intersection ) ) {
+
+				_offset.copy( _intersection ).sub( _selected.position );
+
+			}
+
+			_domElement.style.cursor = 'move';
+
+			scope.dispatchEvent( { type: 'dragstart', object: _selected } );
+
+		}
+
+
+	}
+
+	function onDocumentMouseUp( event ) {
+
+		event.preventDefault();
+
+		if ( _selected ) {
+
+			scope.dispatchEvent( { type: 'dragend', object: _selected } );
+
+			_selected = null;
+
+		}
+
+		_domElement.style.cursor = 'auto';
+
+	}
+
+	activate();
+
+	// API
+
+	this.enabled = true;
+
+	this.activate = activate;
+	this.deactivate = deactivate;
+	this.dispose = dispose;
+
+	// Backward compatibility
+
+	this.setObjects = function () {
+
+		console.error( 'THREE.DragControls: setObjects() has been removed.' );
+
+	};
+
+	this.on = function ( type, listener ) {
+
+		console.warn( 'THREE.DragControls: on() has been deprecated. Use addEventListener() instead.' );
+		scope.addEventListener( type, listener );
+
+	};
+
+	this.off = function ( type, listener ) {
+
+		console.warn( 'THREE.DragControls: off() has been deprecated. Use removeEventListener() instead.' );
+		scope.removeEventListener( type, listener );
+
+	};
+
+	this.notify = function ( type ) {
+
+		console.error( 'THREE.DragControls: notify() has been deprecated. Use dispatchEvent() instead.' );
+		scope.dispatchEvent( { type: type } );
+
+	};
+
+};
+
+THREE.DragControls.prototype = Object.create( THREE.EventDispatcher.prototype );
+THREE.DragControls.prototype.constructor = THREE.DragControls;