"use strict"; //  farParentGrabEntity.js////  Distributed under the Apache License, Version 2.0.//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html /* jslint bitwise: true */ /* global Script, Controller, RIGHT_HAND, LEFT_HAND, Mat4, MyAvatar, Vec3, Quat, getEnabledModuleByName, makeRunningValues,   Entities, enableDispatcherModule, disableDispatcherModule, entityIsGrabbable, makeDispatcherModuleParameters, MSECS_PER_SEC,   HAPTIC_PULSE_STRENGTH, HAPTIC_PULSE_DURATION, TRIGGER_OFF_VALUE, TRIGGER_ON_VALUE, ZERO_VEC, getControllerWorldLocation,   projectOntoEntityXYPlane, ContextOverlay, HMD, Picks, makeLaserLockInfo, Xform, makeLaserParams, AddressManager,   getEntityParents, Selection, DISPATCHER_HOVERING_LIST, unhighlightTargetEntity, Messages, Uuid, findGroupParent,   worldPositionToRegistrationFrameMatrix*/ Script.include("/~/system/libraries/controllerDispatcherUtils.js");Script.include("/~/system/libraries/controllers.js");Script.include("/~/system/libraries/Xform.js"); (function() {    var GRABBABLE_PROPERTIES = [        "position",        "registrationPoint",        "rotation",        "gravity",        "collidesWith",        "dynamic",        "collisionless",        "locked",        "name",        "shapeType",        "parentID",        "parentJointIndex",        "density",        "dimensions",        "userData"    ];     var MARGIN = 25;     function TargetObject(entityID, entityProps) {        this.entityID = entityID;        this.entityProps = entityProps;        this.targetEntityID = null;        this.targetEntityProps = null;         this.getTargetEntity = function() {            var parentPropsLength = this.parentProps.length;            if (parentPropsLength !== 0) {                var targetEntity = {                    id: this.parentProps[parentPropsLength - 1].id,                    props: this.parentProps[parentPropsLength - 1]};                this.targetEntityID = targetEntity.id;                this.targetEntityProps = targetEntity.props;                return targetEntity;            }            this.targetEntityID = this.entityID;            this.targetEntityProps = this.entityProps;            return {                id: this.entityID,                props: this.entityProps};        };    }     function FarParentGrabEntity(hand) {        this.hand = hand;        this.targetEntityID = null;        this.targetObject = null;        this.previousParentID = {};        this.previousParentJointIndex = {};        this.potentialEntityWithContextOverlay = false;        this.entityWithContextOverlay = false;        this.contextOverlayTimer = false;        this.highlightedEntity = null;        this.reticleMinX = MARGIN;        this.reticleMaxX = 0;        this.reticleMinY = MARGIN;        this.reticleMaxY = 0;         var FAR_GRAB_JOINTS = [65527, 65528]; // FARGRAB_LEFTHAND_INDEX, FARGRAB_RIGHTHAND_INDEX         var DISTANCE_HOLDING_RADIUS_FACTOR = 3.5; // multiplied by distance between hand and object        var DISTANCE_HOLDING_ACTION_TIMEFRAME = 0.1; // how quickly objects move to their new position        var DISTANCE_HOLDING_UNITY_MASS = 1200; //  The mass at which the distance holding action timeframe is unmodified        var DISTANCE_HOLDING_UNITY_DISTANCE = 6; //  The distance at which the distance holding action timeframe is unmodified         this.parameters = makeDispatcherModuleParameters(            540,            this.hand === RIGHT_HAND ? ["rightHand"] : ["leftHand"],            [],            100,            makeLaserParams(this.hand, false));          this.handToController = function() {            return (this.hand === RIGHT_HAND) ? Controller.Standard.RightHand : Controller.Standard.LeftHand;        };         this.distanceGrabTimescale = function(mass, distance) {            var timeScale = DISTANCE_HOLDING_ACTION_TIMEFRAME * mass /                DISTANCE_HOLDING_UNITY_MASS * distance /                DISTANCE_HOLDING_UNITY_DISTANCE;            if (timeScale < DISTANCE_HOLDING_ACTION_TIMEFRAME) {                timeScale = DISTANCE_HOLDING_ACTION_TIMEFRAME;            }            return timeScale;        };         this.getMass = function(dimensions, density) {            return (dimensions.x * dimensions.y * dimensions.z) * density;        };         this.thisFarGrabJointIsParent = function(isParentProps) {            if (!isParentProps) {                return false;            }             if (isParentProps.parentID !== MyAvatar.sessionUUID && isParentProps.parentID !== MyAvatar.SELF_ID) {                return false;            }             if (isParentProps.parentJointIndex === FAR_GRAB_JOINTS[this.hand]) {                return true;            }             return false;        };         this.startFarParentGrab = function (controllerData, grabbedProperties) {            var controllerLocation = controllerData.controllerLocations[this.hand];            var worldControllerPosition = controllerLocation.position;            var worldControllerRotation = controllerLocation.orientation;            // transform the position into room space            var worldToSensorMat = Mat4.inverse(MyAvatar.getSensorToWorldMatrix());            var roomControllerPosition = Mat4.transformPoint(worldToSensorMat, worldControllerPosition);             var now = Date.now();             // add the action and initialize some variables            this.currentObjectPosition = grabbedProperties.position;            this.currentObjectRotation = grabbedProperties.rotation;            this.currentObjectTime = now;             this.grabRadius = this.grabbedDistance;            this.grabRadialVelocity = 0.0;             // offset between controller vector at the grab radius and the entity position            var targetPosition = Vec3.multiply(this.grabRadius, Quat.getUp(worldControllerRotation));            targetPosition = Vec3.sum(targetPosition, worldControllerPosition);            this.offsetPosition = Vec3.subtract(this.currentObjectPosition, targetPosition);             // compute a constant based on the initial conditions which we use below to exaggerate hand motion            // onto the held object            this.radiusScalar = Math.log(this.grabRadius + 1.0);            if (this.radiusScalar < 1.0) {                this.radiusScalar = 1.0;            }             // compute the mass for the purpose of energy and how quickly to move object            this.mass = this.getMass(grabbedProperties.dimensions, grabbedProperties.density);             Controller.triggerHapticPulse(HAPTIC_PULSE_STRENGTH, HAPTIC_PULSE_DURATION, this.hand);            unhighlightTargetEntity(this.targetEntityID);            var message = {                hand: this.hand,                entityID: this.targetEntityID            };             Messages.sendLocalMessage('Hifi-unhighlight-entity', JSON.stringify(message));             var newTargetPosLocal = MyAvatar.worldToJointPoint(grabbedProperties.position);            MyAvatar.setJointTranslation(FAR_GRAB_JOINTS[this.hand], newTargetPosLocal);             var args = [this.hand === RIGHT_HAND ? "right" : "left", MyAvatar.sessionUUID];            Entities.callEntityMethod(grabbedProperties.id, "startNearGrab", args);             var reparentProps = {                parentID: MyAvatar.SELF_ID,                parentJointIndex: FAR_GRAB_JOINTS[this.hand],                localVelocity: {x: 0, y: 0, z: 0},                localAngularVelocity: {x: 0, y: 0, z: 0}            };             if (this.thisFarGrabJointIsParent(grabbedProperties)) {                // this should never happen, but if it does, don't set previous parent to be this hand.                this.previousParentID[grabbedProperties.id] = null;                this.previousParentJointIndex[grabbedProperties.id] = -1;            } else {                this.previousParentID[grabbedProperties.id] = grabbedProperties.parentID;                this.previousParentJointIndex[grabbedProperties.id] = grabbedProperties.parentJointIndex;            }             this.targetEntityID = grabbedProperties.id;            Entities.editEntity(grabbedProperties.id, reparentProps);             Messages.sendMessage('Hifi-Object-Manipulation', JSON.stringify({                action: 'grab',                grabbedEntity: grabbedProperties.id,                joint: this.hand === RIGHT_HAND ? "RightHand" : "LeftHand"            }));            this.grabbing = true;             this.previousRoomControllerPosition = roomControllerPosition;        };         this.continueDistanceHolding = function(controllerData) {            var controllerLocation = controllerData.controllerLocations[this.hand];            var worldControllerPosition = controllerLocation.position;            var worldControllerRotation = controllerLocation.orientation;             // also transform the position into room space            var worldToSensorMat = Mat4.inverse(MyAvatar.getSensorToWorldMatrix());            var roomControllerPosition = Mat4.transformPoint(worldToSensorMat, worldControllerPosition);             var grabbedProperties = Entities.getEntityProperties(this.targetEntityID, GRABBABLE_PROPERTIES);            var now = Date.now();            var deltaObjectTime = (now - this.currentObjectTime) / MSECS_PER_SEC; // convert to seconds            this.currentObjectTime = now;             // the action was set up when this.distanceHolding was called.  update the targets.            var radius = Vec3.distance(this.currentObjectPosition, worldControllerPosition) *                this.radiusScalar * DISTANCE_HOLDING_RADIUS_FACTOR;            if (radius < 1.0) {                radius = 1.0;            }             var roomHandDelta = Vec3.subtract(roomControllerPosition, this.previousRoomControllerPosition);            var worldHandDelta = Mat4.transformVector(MyAvatar.getSensorToWorldMatrix(), roomHandDelta);            var handMoved = Vec3.multiply(worldHandDelta, radius);            this.currentObjectPosition = Vec3.sum(this.currentObjectPosition, handMoved);             var args = [this.hand === RIGHT_HAND ? "right" : "left", MyAvatar.sessionUUID];            Entities.callEntityMethod(this.targetEntityID, "continueDistanceGrab", args);             //  Update radialVelocity            var lastVelocity = Vec3.multiply(worldHandDelta, 1.0 / deltaObjectTime);            var delta = Vec3.normalize(Vec3.subtract(grabbedProperties.position, worldControllerPosition));            var newRadialVelocity = Vec3.dot(lastVelocity, delta);             var VELOCITY_AVERAGING_TIME = 0.016;            var blendFactor = deltaObjectTime / VELOCITY_AVERAGING_TIME;            if (blendFactor < 0.0) {                blendFactor = 0.0;            } else if (blendFactor > 1.0) {                blendFactor = 1.0;            }            this.grabRadialVelocity = blendFactor * newRadialVelocity + (1.0 - blendFactor) * this.grabRadialVelocity;             var RADIAL_GRAB_AMPLIFIER = 10.0;            if (Math.abs(this.grabRadialVelocity) > 0.0) {                this.grabRadius = this.grabRadius + (this.grabRadialVelocity * deltaObjectTime *                                                     this.grabRadius * RADIAL_GRAB_AMPLIFIER);            }             // don't let grabRadius go all the way to zero, because it can't come back from that            var MINIMUM_GRAB_RADIUS = 0.1;            if (this.grabRadius < MINIMUM_GRAB_RADIUS) {                this.grabRadius = MINIMUM_GRAB_RADIUS;            }            var newTargetPosition = Vec3.multiply(this.grabRadius, Quat.getUp(worldControllerRotation));            newTargetPosition = Vec3.sum(newTargetPosition, worldControllerPosition);            newTargetPosition = Vec3.sum(newTargetPosition, this.offsetPosition);             // MyAvatar.setJointTranslation(FAR_GRAB_JOINTS[this.hand], MyAvatar.worldToJointPoint(newTargetPosition));             // var newTargetPosLocal = Mat4.transformPoint(MyAvatar.getSensorToWorldMatrix(), newTargetPosition);            var newTargetPosLocal = MyAvatar.worldToJointPoint(newTargetPosition);            MyAvatar.setJointTranslation(FAR_GRAB_JOINTS[this.hand], newTargetPosLocal);             this.previousRoomControllerPosition = roomControllerPosition;        };         this.endFarParentGrab = function (controllerData) {            this.hapticTargetID = null;            // var endProps = controllerData.nearbyEntityPropertiesByID[this.targetEntityID];            var endProps = Entities.getEntityProperties(this.targetEntityID, GRABBABLE_PROPERTIES);            if (this.thisFarGrabJointIsParent(endProps)) {                Entities.editEntity(this.targetEntityID, {                    parentID: this.previousParentID[this.targetEntityID],                    parentJointIndex: this.previousParentJointIndex[this.targetEntityID]                });            }             var args = [this.hand === RIGHT_HAND ? "right" : "left", MyAvatar.sessionUUID];            Entities.callEntityMethod(this.targetEntityID, "releaseGrab", args);            Messages.sendMessage('Hifi-Object-Manipulation', JSON.stringify({                action: 'release',                grabbedEntity: this.targetEntityID,                joint: this.hand === RIGHT_HAND ? "RightHand" : "LeftHand"            }));            unhighlightTargetEntity(this.targetEntityID);            this.grabbing = false;            this.targetEntityID = null;            this.potentialEntityWithContextOverlay = false;            MyAvatar.clearJointData(FAR_GRAB_JOINTS[this.hand]);        };         this.updateRecommendedArea = function() {            var dims = Controller.getViewportDimensions();            this.reticleMaxX = dims.x - MARGIN;            this.reticleMaxY = dims.y - MARGIN;        };         this.calculateNewReticlePosition = function(intersection) {            this.updateRecommendedArea();            var point2d = HMD.overlayFromWorldPoint(intersection);            point2d.x = Math.max(this.reticleMinX, Math.min(point2d.x, this.reticleMaxX));            point2d.y = Math.max(this.reticleMinY, Math.min(point2d.y, this.reticleMaxY));            return point2d;        };         this.notPointingAtEntity = function(controllerData) {            var intersection = controllerData.rayPicks[this.hand];            var entityProperty = Entities.getEntityProperties(intersection.objectID);            var entityType = entityProperty.type;            var hudRayPick = controllerData.hudRayPicks[this.hand];            var point2d = this.calculateNewReticlePosition(hudRayPick.intersection);            if ((intersection.type === Picks.INTERSECTED_ENTITY && entityType === "Web") ||                intersection.type === Picks.INTERSECTED_OVERLAY || Window.isPointOnDesktopWindow(point2d)) {                return true;            }            return false;        };         this.distanceRotate = function(otherFarGrabModule) {            this.distanceRotating = true;            this.distanceHolding = false;             var worldControllerRotation = getControllerWorldLocation(this.handToController(), true).orientation;            var controllerRotationDelta =                Quat.multiply(worldControllerRotation, Quat.inverse(this.previousWorldControllerRotation));            // Rotate entity by twice the delta rotation.            controllerRotationDelta = Quat.multiply(controllerRotationDelta, controllerRotationDelta);             // Perform the rotation in the translation controller's action update.            otherFarGrabModule.currentObjectRotation = Quat.multiply(controllerRotationDelta,                otherFarGrabModule.currentObjectRotation);             this.previousWorldControllerRotation = worldControllerRotation;        };         this.prepareDistanceRotatingData = function(controllerData) {            var intersection = controllerData.rayPicks[this.hand];             var controllerLocation = getControllerWorldLocation(this.handToController(), true);            var worldControllerPosition = controllerLocation.position;            var worldControllerRotation = controllerLocation.orientation;             var grabbedProperties = Entities.getEntityProperties(intersection.objectID, GRABBABLE_PROPERTIES);            this.currentObjectPosition = grabbedProperties.position;            this.grabRadius = intersection.distance;             // Offset between controller vector at the grab radius and the entity position.            var targetPosition = Vec3.multiply(this.grabRadius, Quat.getUp(worldControllerRotation));            targetPosition = Vec3.sum(targetPosition, worldControllerPosition);            this.offsetPosition = Vec3.subtract(this.currentObjectPosition, targetPosition);             // Initial controller rotation.            this.previousWorldControllerRotation = worldControllerRotation;        };         this.destroyContextOverlay = function(controllerData) {            if (this.entityWithContextOverlay) {                ContextOverlay.destroyContextOverlay(this.entityWithContextOverlay);                this.entityWithContextOverlay = false;                this.potentialEntityWithContextOverlay = false;            }        };         this.targetIsNull = function() {            var properties = Entities.getEntityProperties(this.targetEntityID, GRABBABLE_PROPERTIES);            if (Object.keys(properties).length === 0 && this.distanceHolding) {                return true;            }            return false;        };         this.getTargetProps = function (controllerData) {            var targetEntity = controllerData.rayPicks[this.hand].objectID;            if (targetEntity) {                var gtProps = Entities.getEntityProperties(targetEntity, GRABBABLE_PROPERTIES);                if (entityIsGrabbable(gtProps)) {                    // give haptic feedback                    if (gtProps.id !== this.hapticTargetID) {                        Controller.triggerHapticPulse(HAPTIC_PULSE_STRENGTH, HAPTIC_PULSE_DURATION, this.hand);                        this.hapticTargetID = gtProps.id;                    }                    // if we've attempted to grab a child, roll up to the root of the tree                    var groupRootProps = findGroupParent(controllerData, gtProps);                    if (entityIsGrabbable(groupRootProps)) {                        return groupRootProps;                    }                    return gtProps;                }            }            return null;        };         this.isReady = function (controllerData) {            if (HMD.active) {                if (this.notPointingAtEntity(controllerData)) {                    return makeRunningValues(false, [], []);                }                 this.distanceHolding = false;                this.distanceRotating = false;                 if (controllerData.triggerValues[this.hand] > TRIGGER_ON_VALUE) {                    var targetProps = this.getTargetProps(controllerData);                    if (targetProps && (targetProps.dynamic && targetProps.parentID === Uuid.NULL)) {                        return makeRunningValues(false, [], []); // let farActionGrabEntity handle it                    } else {                        this.prepareDistanceRotatingData(controllerData);                        return makeRunningValues(true, [], []);                    }                } else {                    this.destroyContextOverlay();                    return makeRunningValues(false, [], []);                }            }            return makeRunningValues(false, [], []);        };         this.run = function (controllerData) {            if (controllerData.triggerValues[this.hand] < TRIGGER_OFF_VALUE ||                this.notPointingAtEntity(controllerData) || this.targetIsNull()) {                this.endFarParentGrab(controllerData);                Selection.removeFromSelectedItemsList(DISPATCHER_HOVERING_LIST, "entity", this.highlightedEntity);                this.highlightedEntity = null;                return makeRunningValues(false, [], []);            }            this.intersectionDistance = controllerData.rayPicks[this.hand].distance;             var otherModuleName = this.hand === RIGHT_HAND ? "LeftFarParentGrabEntity" : "RightFarParentGrabEntity";            var otherFarGrabModule = getEnabledModuleByName(otherModuleName);             // gather up the readiness of the near-grab modules            var nearGrabNames = [                this.hand === RIGHT_HAND ? "RightScaleAvatar" : "LeftScaleAvatar",                this.hand === RIGHT_HAND ? "RightFarTriggerEntity" : "LeftFarTriggerEntity",                this.hand === RIGHT_HAND ? "RightNearActionGrabEntity" : "LeftNearActionGrabEntity",                this.hand === RIGHT_HAND ? "RightNearParentingGrabEntity" : "LeftNearParentingGrabEntity",                this.hand === RIGHT_HAND ? "RightNearParentingGrabOverlay" : "LeftNearParentingGrabOverlay"            ];             var nearGrabReadiness = [];            for (var i = 0; i < nearGrabNames.length; i++) {                var nearGrabModule = getEnabledModuleByName(nearGrabNames[i]);                var ready = nearGrabModule ? nearGrabModule.isReady(controllerData) : makeRunningValues(false, [], []);                nearGrabReadiness.push(ready);            }             if (this.targetEntityID) {                // if we are doing a distance grab and the object or tablet gets close enough to the controller,                // stop the far-grab so the near-grab or equip can take over.                for (var k = 0; k < nearGrabReadiness.length; k++) {                    if (nearGrabReadiness[k].active && (nearGrabReadiness[k].targets[0] === this.targetEntityID ||                                                        HMD.tabletID && nearGrabReadiness[k].targets[0] === HMD.tabletID)) {                        this.endFarParentGrab(controllerData);                        return makeRunningValues(false, [], []);                    }                }                 this.continueDistanceHolding(controllerData);            } else {                // if we are doing a distance search and this controller moves into a position                // where it could near-grab something, stop searching.                for (var j = 0; j < nearGrabReadiness.length; j++) {                    if (nearGrabReadiness[j].active) {                        this.endFarParentGrab(controllerData);                        return makeRunningValues(false, [], []);                    }                }                 var rayPickInfo = controllerData.rayPicks[this.hand];                if (rayPickInfo.type === Picks.INTERSECTED_ENTITY) {                    if (controllerData.triggerClicks[this.hand]) {                        var entityID = rayPickInfo.objectID;                        Selection.removeFromSelectedItemsList(DISPATCHER_HOVERING_LIST, "entity", this.highlightedEntity);                        this.highlightedEntity = null;                        var targetProps = Entities.getEntityProperties(entityID, [                            "dynamic", "shapeType", "position",                            "rotation", "dimensions", "density",                            "userData", "locked", "type", "href"                        ]);                        if (targetProps.href !== "") {                            AddressManager.handleLookupString(targetProps.href);                            return makeRunningValues(false, [], []);                        }                         this.targetObject = new TargetObject(entityID, targetProps);                        this.targetObject.parentProps = getEntityParents(targetProps);                         if (this.contextOverlayTimer) {                            Script.clearTimeout(this.contextOverlayTimer);                        }                        this.contextOverlayTimer = false;                        if (entityID === this.entityWithContextOverlay) {

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