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More information: https://www.jsdelivr.com/using-sri-with-dynamic-files\n */\n","if (!AFRAME.components['object-parent']) require('aframe-object-parent')\r\nif (!AFRAME.components['thumbstick-states']) require('aframe-thumbstick-states')\r\n\r\n/* Used in laser-manipulation */\r\nconst _xRotationAxis = new THREE.Vector3()\r\nconst _yRotationAxis = new THREE.Vector3()\r\nconst _zRotationAxis = new THREE.Vector3()\r\nconst _localAxis = new THREE.Vector3()\r\nconst _unused = new THREE.Vector3()\r\nconst _worldQuaternion = new THREE.Quaternion()\r\n\r\n/* Used in debug-axis */\r\nconst _worldPosition = new THREE.Vector3()\r\nconst _start = new THREE.Vector3()\r\nconst _end = new THREE.Vector3()\r\n\r\nAFRAME.registerComponent('laser-manipulation', {\r\n\r\n schema: {\r\n rotateRate: {type: 'number', default: 45},\r\n center: {type: 'string', default: 'center', oneOf: ['center','contact']},\r\n grabEvents: {type: 'boolean', default: false},\r\n grabEvent: {type: 'string', default: 'laserGrab'},\r\n releaseEvent: {type: 'string', default: 'laserRelease'},\r\n controlMethod: {type: 'string', default: 'parent', oneOf: ['parent', 'transform']}\r\n },\r\n \r\n update() {\r\n \r\n // internally store rotation rate as radians per event\r\n this.rotateRate = this.data.rotateRate * Math.PI / 180;\r\n\r\n if (this.data.debug && !this.debugAxes) {\r\n this.debugAxes = document.createElement('a-entity')\r\n this.debugAxes.setAttribute('debug-axes', '')\r\n this.contactPoint.appendChild(this.debugAxes)\r\n \r\n }\r\n else {\r\n if (this.debugAxes) {\r\n this.debugAxes.parentNode.removeChild(this.debugAxes)\r\n this.debugAxes = null\r\n }\r\n }\r\n \r\n },\r\n \r\n init() {\r\n // controller must have an ID so that\r\n console.assert(this.el.id)\r\n \r\n // This is a rate per second. We scale distance by this factor per second.\r\n // Take a root of this to get a scaling factor.\r\n this.moveSpeed = 3;\r\n \r\n // set up listeners\r\n this.triggerUp = this.triggerUp.bind(this)\r\n this.triggerDown = this.triggerDown.bind(this)\r\n this.el.addEventListener('triggerup', this.triggerUp)\r\n this.el.addEventListener('triggerdown', this.triggerDown)\r\n \r\n // variable to track any grabbed element\r\n this.grabbedEl = null;\r\n \r\n // child object used as container for any entity that can be grabbed.\r\n // (this helps with scaling, rotation etc. of grabbed entity)\r\n this.contactPoint = document.createElement('a-entity')\r\n this.contactPoint.setAttribute('id', `${this.el.id}-contact-point`)\r\n this.el.appendChild(this.contactPoint)\r\n\r\n this.lastContactPointTransform = new THREE.Object3D()\r\n },\r\n\r\n /* Code below is duplicated from mouse-manipulation - should be commonized */\r\n\r\n // Ensure an element has a usable ID.\r\n // If it has no ID, add one.\r\n // If it has an ID but it's not usable to identify the element...\r\n // ...log an error (preferable to creating confusion by modifying existing IDs)\r\n assureUsableId(el) {\r\n\r\n if (!el.id) {\r\n // No ID, just set one\r\n el.setAttribute(\"id\", Math.random().toString(36).slice(10))\r\n }\r\n else {\r\n const reference = document.getElementById(el.id)\r\n if (reference !== el) {\r\n console.error(`Element ID for ${el.id} does not unambiguously identify it. Check for duplicate IDs.`)\r\n }\r\n }\r\n },\r\n\r\n // Get scene graph parent element of an element.\r\n // Includes the case where the parent is the a-scene.\r\n getParentEl(el) {\r\n\r\n const parentObject = el.object3D.parent\r\n\r\n if (parentObject.type === 'Scene') {\r\n return(this.el.sceneEl)\r\n }\r\n else {\r\n return parentObject.el\r\n }\r\n },\r\n\r\n /* Code above is duplicated from mouse-manipulation - should be commonized */\r\n\r\n triggerDown(evt) {\r\n \r\n console.assert(!this.grabbedEl)\r\n \r\n const intersections = this.getIntersections(evt.target)\r\n \r\n if (intersections.length === 0) return;\r\n \r\n const element = this.getRaycastTarget(intersections[0])\r\n \r\n const intersectionData = this.el.components.raycaster.getIntersection(intersections[0])\r\n \r\n // Save record of original parent, and make sure it has a usable ID.\r\n if (!this.originalParentEl) {\r\n this.originalParentEl = this.getParentEl(element)\r\n }\r\n this.assureUsableId(this.originalParentEl)\r\n\r\n // set up a contact point at the position of the grabbed entity\r\n if (this.data.center === \"center\") {\r\n // attach to entity center\r\n const pos = this.contactPoint.object3D.position\r\n element.object3D.getWorldPosition(pos)\r\n this.contactPoint.object3D.parent.worldToLocal(pos)\r\n }\r\n else {\r\n // attach to ray's contact point with entity\r\n const contactPoint = this.el.object3D.worldToLocal(intersectionData.point)\r\n this.contactPoint.object3D.position.copy(contactPoint)\r\n \r\n }\r\n \r\n this.getAxesFromRay(_xRotationAxis, _yRotationAxis, _zRotationAxis)\r\n\r\n\r\n // reparent element to this controller.\r\n if (this.data.controlMethod === 'parent') {\r\n this.activeControlMethod = 'parent'\r\n element.setAttribute('object-parent', 'parent', `#${this.el.id}-contact-point`)\r\n }\r\n else {\r\n this.activeControlMethod = 'transform'\r\n this.saveContactPointTransform()\r\n }\r\n\r\n // store reference to grabbed element\r\n this.grabbedEl = element\r\n\r\n if (this.data.grabEvents) {\r\n this.grabbedEl.emit(this.data.grabEvent)\r\n }\r\n },\r\n\r\n getAxesFromRay(xAxis, yAxis, zAxis) {\r\n zAxis.copy(this.el.components.raycaster.raycaster.ray.direction) \r\n this.el.object3D.matrixWorld.extractBasis(_unused, yAxis, _unused)\r\n yAxis.projectOnPlane(zAxis).normalize()\r\n\r\n xAxis.crossVectors(zAxis, yAxis)\r\n },\r\n \r\n triggerUp() {\r\n \r\n if (!this.grabbedEl) return\r\n \r\n if (this.activeControlMethod === 'parent') {\r\n this.grabbedEl.setAttribute('object-parent', 'parent', `#${this.originalParentEl.id}`)\r\n }\r\n \r\n if (this.data.grabEvents) {\r\n // defer event to next schedule, to allow reparenting to have completed.\r\n const releasedEl = this.grabbedEl\r\n setTimeout(() => {\r\n releasedEl.emit(this.data.releaseEvent)\r\n })\r\n }\r\n this.grabbedEl = null\r\n this.activeControlMethod = ''\r\n },\r\n \r\n getIntersections(controllerEl) {\r\n \r\n const els = controllerEl.components.raycaster.intersectedEls\r\n return els\r\n },\r\n \r\n // Implements moving out or in (in = -ve)\r\n moveOut(timeDelta) {\r\n const scalar = Math.pow(this.moveSpeed, timeDelta/1000);\r\n this.contactPoint.object3D.position.multiplyScalar(scalar)\r\n },\r\n\r\n getRaycastTarget(el) {\r\n if (el.components['raycast-target']) {\r\n return el.components['raycast-target'].target\r\n }\r\n else {\r\n return el\r\n }\r\n },\r\n\r\n saveContactPointTransform() {\r\n const transform = this.lastContactPointTransform\r\n transform.quaternion.identity()\r\n transform.position.set(0, 0, 0)\r\n transform.scale.set(1, 1, 1)\r\n this.contactPoint.object3D.add(transform)\r\n this.el.sceneEl.object3D.attach(transform)\r\n },\r\n\r\n followContactPoint() {\r\n const object = this.grabbedEl.object3D\r\n this.lastContactPointTransform.attach(object)\r\n this.saveContactPointTransform()\r\n this.originalParentEl.object3D.attach(object)\r\n },\r\n \r\n tick: function(time, timeDelta) {\r\n\r\n if (this.activeControlMethod === 'transform') {\r\n this.followContactPoint()\r\n }\r\n \r\n if (this.el.is(\"moving-in\")) {\r\n this.moveOut(-timeDelta);\r\n }\r\n else if (this.el.is(\"moving-out\")) {\r\n this.moveOut(timeDelta);\r\n }\r\n \r\n const angle = timeDelta * this.rotateRate / 1000\r\n const contactPoint = this.contactPoint.object3D\r\n this.getAxesFromRay(_xRotationAxis, _yRotationAxis, _zRotationAxis)\r\n if (this.el.is(\"rotating-y-plus\")) {\r\n this.rotateOnWorldAxis(contactPoint, _yRotationAxis, angle)\r\n }\r\n else if (this.el.is(\"rotating-y-minus\")) {\r\n this.rotateOnWorldAxis(contactPoint, _yRotationAxis, -angle)\r\n }\r\n\r\n if (this.el.is(\"rotating-x-plus\")) {\r\n this.rotateOnWorldAxis(contactPoint, _xRotationAxis, angle)\r\n }\r\n else if (this.el.is(\"rotating-x-minus\")) {\r\n this.rotateOnWorldAxis(contactPoint, _xRotationAxis, -angle)\r\n }\r\n\r\n if (this.data.debug) {\r\n if (this.el.is(\"rotating-y-plus\") ||\r\n this.el.is(\"rotating-y-minus\")) {\r\n const y = _yRotationAxis\r\n this.contactPoint.setAttribute('debug-axis__y', `direction: ${y.x}, ${y.y}, ${y.z}; color: green`)\r\n }\r\n else {\r\n this.contactPoint.removeAttribute('debug-axis__y')\r\n }\r\n if (this.el.is(\"rotating-x-plus\") ||\r\n this.el.is(\"rotating-x-minus\")) {\r\n const x = _xRotationAxis\r\n this.contactPoint.setAttribute('debug-axis__x', `direction: ${x.x}, ${x.y}, ${x.z}; color: red`)\r\n }\r\n else {\r\n this.contactPoint.removeAttribute('debug-axis__x')\r\n }\r\n }\r\n },\r\n\r\n /* Alternative to THREE.Object3D.rotateOnWorldAxis(), which doesn't\r\n * support the case where the parent (or indeed any ancestor) is\r\n * rotated.\r\n * https://threejs.org/docs/index.html?q=object3D#api/en/core/Object3D.rotateOnWorldAxis\r\n */\r\n rotateOnWorldAxis(object, axis, angle) {\r\n object.getWorldQuaternion(_worldQuaternion)\r\n _worldQuaternion.invert()\r\n _localAxis.copy(axis)\r\n _localAxis.applyQuaternion(_worldQuaternion)\r\n\r\n object.rotateOnAxis(_localAxis, angle)\r\n }\r\n });\r\n\r\n /* Set on an entity to show X, Y & Z axes */\r\n AFRAME.registerComponent(\"debug-axes\", {\r\n\r\n init() {\r\n \r\n this.addAxis('red', '0 0 0')\r\n this.addAxis('green', '0 0 90')\r\n this.addAxis('blue', '0 -90 0')\r\n },\r\n \r\n addAxis(color, rotation) {\r\n \r\n const axisHtml = `\r\n \r\n \r\n \r\n `\r\n \r\n this.el.insertAdjacentHTML('beforeend', axisHtml)\r\n }\r\n })\r\n\r\n /* Set on an entity to a particular axis in world co-ordinates */\r\n AFRAME.registerComponent(\"debug-axis\", {\r\n\r\n schema: {\r\n direction: { type: 'vec3'},\r\n color: { type: 'color', default: 'green'}\r\n },\r\n\r\n multiple: true,\r\n\r\n update() {\r\n\r\n const object = this.el.object3D\r\n object.getWorldPosition(_worldPosition)\r\n\r\n _start.subVectors(_worldPosition, this.data.direction)\r\n _end.addVectors(_worldPosition, this.data.direction)\r\n\r\n object.worldToLocal(_start)\r\n object.worldToLocal(_end)\r\n\r\n this.el.setAttribute('line__axis', \r\n `start: ${_start.x} ${_start.y} ${_start.z};\r\n end: ${_end.x} ${_end.y} ${_end.z};\r\n color: ${this.data.color}`)\r\n },\r\n\r\n remove() {\r\n this.el.removeAttribute('line__axis')\r\n }\r\n })\r\n"]}