diff --git a/tutorial/doppleganger.js b/tutorial/doppleganger.js
new file mode 100644
index 0000000..f887185
--- /dev/null
+++ b/tutorial/doppleganger.js
@@ -0,0 +1,526 @@
+"use strict";
+//======================================
+//
+// doppleganger.js
+//
+// Created by Timothy Dedischew on 04/21/2017.
+// Copyright 2017 High Fidelity, Inc.
+// Copyright 2020 Vircadia contibutors.
+// Copyright 2022 Overte e.V.
+//
+// Distributed under the Apache License, Version 2.0.
+// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+//
+/* global module */
+// @module doppleganger
+//
+// This module contains the `Doppleganger` class implementation for creating an inspectable replica of
+// an Avatar (as a model directly in front of and facing them). Joint positions and rotations are copied
+// over in an update thread, so that the model automatically mirrors the Avatar's joint movements.
+// An Avatar can then for example walk around "themselves" and examine from the back, etc.
+//
+// This should be helpful for inspecting your own look and debugging avatars, etc.
+//
+// The doppleganger is created as a local entity so that others do not see it -- this also allows for the
+// highest possible update rate when keeping joint data in sync.
+//
+// NOTE: THIS IS A MODIFIED VERSION SPECIFICALLY FOR THE TUTORIAL.
+
+module.exports = Doppleganger;
+
+// @property {bool} - when set true, Script.update will be used instead of setInterval for syncing joint data
+Doppleganger.USE_SCRIPT_UPDATE = false;
+
+// @property {int} - the frame rate to target when using setInterval for joint updates
+Doppleganger.TARGET_FPS = 60;
+
+// @property {int} - the maximum time in seconds to wait for the model overlay to finish loading
+Doppleganger.MAX_WAIT_SECS = 10;
+
+// @function - derive mirrored joint names from a list of regular joint names
+// @param {Array} - list of joint names to mirror
+// @return {Array} - list of mirrored joint names (note: entries for non-mirrored joints will be `undefined`)
+
+var Setarry;
+
+Doppleganger.getMirroredJointNames = function(jointNames) {
+ return jointNames.map(function(name, i) {
+ if (/Left/.test(name)) {
+ return name.replace('Left', 'Right');
+ }
+ if (/Right/.test(name)) {
+ return name.replace('Right', 'Left');
+ }
+ return undefined;
+ });
+};
+
+// @class Doppleganger - Creates a new instance of a Doppleganger.
+// @param {Avatar} [options.avatar=MyAvatar] - Avatar used to retrieve position and joint data.
+// @param {bool} [options.mirrored=true] - Apply "symmetric mirroring" of Left/Right joints.
+// @param {bool} [options.autoUpdate=true] - Automatically sync joint data.
+function Doppleganger(options) {
+ options = options || {};
+ this.avatar = options.avatar || MyAvatar;
+ this.mirrored = 'mirrored' in options ? options.mirrored : false;
+ this.autoUpdate = 'autoUpdate' in options ? options.autoUpdate : true;
+
+ // @public
+ this.active = false; // whether doppleganger is currently being displayed/updated
+ this.entityID = null; // current doppleganger's Entity id
+ this.frame = 0; // current joint update frame
+
+ // @signal - emitted when .active state changes
+ this.activeChanged = signal(function(active, reason) {});
+ // @signal - emitted once model overlay is either loaded or errors out
+ this.addingEntity = signal(function(error, result){});
+ // @signal - emitted each time the model overlay's joint data has been synchronized
+ this.jointsUpdated = signal(function(entityID){});
+}
+
+Doppleganger.prototype = {
+ // @public @method - toggles doppleganger on/off
+ toggle: function() {
+ if (this.active) {
+ log('toggling off');
+ this.stop();
+ }else{
+ log('toggling on');
+ this.start();
+ }
+ return this.active;
+ },
+
+ // @public @method - synchronize the joint data between Avatar / doppleganger
+ update: function() {
+ this.frame++;
+ try {
+ if (!this.entityID) {
+ throw new Error('!this.entityID');
+ }
+
+ if (this.avatar.skeletonModelURL !== this.skeletonModelURL) {
+ //return this.stop('avatar_changed');
+ }
+
+ var rotations = this.avatar.getJointRotations();
+ var translations = this.avatar.getJointTranslations();
+ var size = rotations.length;
+
+
+ // note: this mismatch can happen when the avatar's model is actively changing
+ if (size !== translations.length ||
+ (this.jointStateCount && size !== this.jointStateCount)) {
+ log('mismatched joint counts (avatar model likely changed)', size, translations.length, this.jointStateCount);
+ this.stop('avatar_changed_joints');
+ return;
+ }
+ this.jointStateCount = size;
+
+
+ if (this.mirrored) {
+ var mirroredIndexes = this.mirroredIndexes;
+ var outRotations = new Array(size);
+ var outTranslations = new Array(size);
+ for (var i=0; i < size; i++) {
+ var index = mirroredIndexes[i];
+ if (index < 0 || index === false) {
+ index = i;
+ }
+ var rot = rotations[index];
+ var trans = translations[index];
+ trans.x *= -1;
+ rot.y *= -1;
+ rot.z *= -1;
+ outRotations[i] = rot;
+ outTranslations[i] = trans;
+ }
+ rotations = outRotations;
+ translations = outTranslations;
+ }
+
+
+ Entities.editEntity(this.entityID, {
+ jointRotations: rotations,
+ jointTranslations: translations,
+ jointRotationsSet: Setarry,
+ jointTranslationsSet: Setarry
+ });
+
+ this.jointsUpdated(this.entityID);
+ } catch (e) {
+ //log('.update error: '+ e, index);
+ this.stop('update_error');
+ }
+ },
+
+ // @public @method - show the doppleganger (and start the update thread, if options.autoUpdate was specified).
+ // @param {vec3} [options.position=(in front of avatar)] - starting position
+ // @param {quat} [options.orientation=avatar.orientation] - starting orientation
+ start: function(options) {
+
+
+ options = options || {};
+ if (this.entityID) {
+ //log('start() called but entity model already exists', this.entityID);
+ return;
+ }
+ var avatar = this.avatar;
+ if (!avatar.jointNames.length) {
+ return this.stop('joints_unavailable');
+ }
+
+ this.frame = 0;
+ this.position = options.position || Vec3.sum(avatar.position, Quat.getForward(avatar.orientation));
+ this.orientation = options.orientation || avatar.orientation;
+ this.skeletonModelURL = avatar.skeletonModelURL;
+ this.jointStateCount = 0;
+ this.jointNames = avatar.jointNames;
+ this.mirroredNames = Doppleganger.getMirroredJointNames(this.jointNames);
+ //log(this.mirroredNames);
+ this.mirroredIndexes = this.mirroredNames.map(function(name) {
+ return name ? avatar.getJointIndex(name) : false;
+ });
+ //log(this.mirroredIndexes);
+ var prop = {
+ type: "Model",
+ name: 'Doppelganger', //added
+ visible: false, // normally false
+ modelURL: this.skeletonModelURL, //was field: url
+ position: this.position,
+ rotation: this.orientation
+ };
+
+ this.entityID = Entities.addEntity(prop, "local");
+
+ var allJoints = avatar.getJointRotations();
+ var nbrJoints = allJoints.length;
+ Setarry = Array(nbrJoints);
+ for (var i=0; i < nbrJoints; i++) {
+ Setarry[i] = true;
+ }
+
+ this.onAddingEntity = function(error, result) {
+
+ if (error) {
+ return this.stop(error);
+ }
+ log('ModelEntity is ready; # joints == ' + result.jointNames.length);
+ Entities.editEntity(this.entityID, { visible: true });
+
+ this.syncVerticalPosition('LeftFoot');
+
+ if (this.autoUpdate) {
+ this._createUpdateThread();
+ }
+ };
+ this.addingEntity.connect(this, 'onAddingEntity');
+
+ log('doppleganger created; entityID =', this.entityID);
+
+ // trigger clean up (and stop updates) if the overlay gets deleted
+ this.onDeletedEntity = function(uuid) {
+ if (uuid === this.entityID) {
+ log('onDeletedEntity', uuid);
+ this.stop('entity_deleted');
+ }
+ };
+ Entities.deletingEntity.connect(this, 'onDeletedEntity');
+
+ if ('onLoadComplete' in avatar) {
+ // stop the current doppleganger if Avatar loads a different model URL
+ this.onLoadComplete = function() {
+ if (avatar.skeletonModelURL !== this.skeletonModelURL) {
+ //this.stop('avatar_changed_load');
+ }
+ };
+ avatar.onLoadComplete.connect(this, 'onLoadComplete');
+ }
+
+ this.activeChanged(this.active = true, 'start');
+ this._waitForModel(ModelCache.prefetch(this.skeletonModelURL));
+ },
+
+ // @public @method - hide the doppleganger
+ // @param {String} [reason=stop] - the reason stop was called
+ stop: function(reason) {
+ reason = reason || 'stop';
+ if (this.onUpdate) {
+ Script.update.disconnect(this, 'onUpdate');
+ delete this.onUpdate;
+ }
+ if (this._interval) {
+ Script.clearInterval(this._interval);
+ this._interval = undefined;
+ }
+ if (this.onDeletedEntity) {
+ Entities.deletingEntity.disconnect(this, 'onDeletedEntity');
+ delete this.onDeletedEntity;
+ }
+ if (this.onLoadComplete) {
+ this.avatar.onLoadComplete.disconnect(this, 'onLoadComplete');
+ delete this.onLoadComplete;
+ }
+ if (this.onAddingEntity) {
+ this.addingEntity.disconnect(this, 'onAddingEntity');
+ }
+ if (this.entityID) {
+ Entities.deleteEntity(this.entityID);
+ this.entityID = undefined;
+ }
+ if (this.active) {
+ this.activeChanged(this.active = false, reason);
+ } else if (reason) {
+ log('already stopped so not triggering another activeChanged; latest reason was:', reason);
+ }
+ },
+
+ // @public @method - Reposition the doppleganger so it sees "eye to eye" with the Avatar.
+ // @param {String} [byJointName=Hips] - the reference joint used to align the Doppleganger and Avatar
+ syncVerticalPosition: function(byJointName) {
+ byJointName = byJointName || 'Hips';
+
+ var dopplePosition = Entities.getEntityProperties(this.entityID, ["position"]);
+ var doppleJointIndex = Entities.getJointIndex( this.entityID, byJointName );
+ var doppleJointPosition = Vec3.sum(Entities.getAbsoluteJointTranslationInObjectFrame( this.entityID, doppleJointIndex ), dopplePosition);
+
+ //log("Joint Pos = " + JSON.stringify(doppleJointPosition));
+
+ var avatarPosition = this.avatar.position;
+ var avatarJointIndex = this.avatar.getJointIndex(byJointName);
+ var avatarJointPosition = Vec3.sum(this.avatar.getAbsoluteJointTranslationInObjectFrame(avatarJointIndex), avatarPosition);
+
+ //log("AV Joint Pos = " + JSON.stringify(avatarJointPosition));
+
+ dopplePosition.position.y = avatarJointPosition.y - doppleJointPosition.y;
+ this.position = dopplePosition.position;
+ Entities.editEntity(this.entityID, { position: this.position });
+ },
+
+ // @private @method - creates the update thread to synchronize joint data
+ _createUpdateThread: function() {
+ if (Doppleganger.USE_SCRIPT_UPDATE) {
+ log('creating Script.update thread');
+ this.onUpdate = this.update;
+ Script.update.connect(this, 'onUpdate');
+ } else {
+ log('creating Script.setInterval thread @ ~', Doppleganger.TARGET_FPS +'fps');
+ var timeout = 1000 / Doppleganger.TARGET_FPS;
+ this._interval = Script.setInterval(bind(this, 'update'), timeout);
+ }
+ },
+
+ // @private @method - waits for model to load and handles timeouts
+ // @param {ModelResource} resource - a prefetched resource to monitor loading state against
+ _waitForModel: function(resource) {
+ var RECHECK_MS = 50;
+ var id = this.entityID,
+ watchdogTimer = null;
+
+ function waitForJointNames() {
+ var error = null, result = null;
+ if (!watchdogTimer) {
+ error = 'joints_unavailable';
+ } else if (resource.state === Resource.State.FAILED) {
+ error = 'prefetch_failed';
+ } else if (resource.state === Resource.State.FINISHED) {
+ var names = Entities.getJointNames(id);
+ if (Array.isArray(names) && names.length) {
+ result = { entityID: id, jointNames: names };
+ }
+ }
+ if (error || result !== null) {
+ Script.clearInterval(this._interval);
+ this._interval = null;
+ if (watchdogTimer) {
+ Script.clearTimeout(watchdogTimer);
+ }
+ this.addingEntity(error, result);
+ }
+ }
+ watchdogTimer = Script.setTimeout(function() {
+ watchdogTimer = null;
+ }, Doppleganger.MAX_WAIT_SECS * 1000);
+ this._interval = Script.setInterval(bind(this, waitForJointNames), RECHECK_MS);
+ }
+};
+
+// @function - bind a function to a `this` context
+// @param {Object} - the `this` context
+// @param {Function|String} - function or method name
+function bind(thiz, method) {
+ method = thiz[method] || method;
+ return function() {
+ return method.apply(thiz, arguments);
+ };
+}
+
+// @function - Qt signal polyfill
+function signal(template) {
+ var callbacks = [];
+ return Object.defineProperties(function() {
+ var args = [].slice.call(arguments);
+ callbacks.forEach(function(obj) {
+ obj.handler.apply(obj.scope, args);
+ });
+ }, {
+ connect: { value: function(scope, handler) {
+ callbacks.push({scope: scope, handler: scope[handler] || handler || scope});
+ }},
+ disconnect: { value: function(scope, handler) {
+ var match = {scope: scope, handler: scope[handler] || handler || scope};
+ callbacks = callbacks.filter(function(obj) {
+ return !(obj.scope === match.scope && obj.handler === match.handler);
+ });
+ }}
+ });
+}
+
+// @function - debug logging
+function log() {
+ //print('doppleganger | ' + [].slice.call(arguments).join(' '));
+}
+
+// -- ADVANCED DEBUGGING --
+// @function - Add debug joint indicators / extra debugging info.
+// @param {Doppleganger} - existing Doppleganger instance to add controls to
+//
+// @note:
+// * rightclick toggles mirror mode on/off
+// * shift-rightclick toggles the debug indicators on/off
+// * clicking on an indicator displays the joint name and mirrored joint name in the debug log.
+//
+// Example use:
+// var doppleganger = new Doppleganger();
+// Doppleganger.addDebugControls(doppleganger);
+Doppleganger.addDebugControls = function(doppleganger) {
+ DebugControls.COLOR_DEFAULT = { red: 255, blue: 255, green: 255 };
+ DebugControls.COLOR_SELECTED = { red: 0, blue: 255, green: 0 };
+
+ function DebugControls() {
+ this.enableIndicators = true;
+ this.selectedJointName = null;
+ this.debugEntityIDs = undefined;
+ this.jointSelected = signal(function(result) {});
+ }
+ DebugControls.prototype = {
+ start: function() {
+ if (!this.onMousePressEvent) {
+ this.onMousePressEvent = this._onMousePressEvent;
+ Controller.mousePressEvent.connect(this, 'onMousePressEvent');
+ }
+ },
+
+ stop: function() {
+ this.removeIndicators();
+ if (this.onMousePressEvent) {
+ Controller.mousePressEvent.disconnect(this, 'onMousePressEvent');
+ delete this.onMousePressEvent;
+ }
+ },
+
+ createIndicators: function(jointNames) {
+ this.jointNames = jointNames;
+ return jointNames.map(function(name, i) {
+ return Entities.addEntity({
+ type: "Shape",
+ shape: 'Icosahedron',
+ scale: 0.1,
+ solid: false,
+ alpha: 0.5
+ });
+ });
+ },
+
+ removeIndicators: function() {
+ if (this.debugEntityIDs) {
+ this.debugEntityIDs.forEach(Entities.deleteEntity);
+ this.debugEntityIDs = undefined;
+ }
+ },
+
+ onJointsUpdated: function(entityID) {
+ if (!this.enableIndicators) {
+ return;
+ }
+ var jointNames = Entities.getJointNames(entityID),
+ jointOrientations = Entities.getEntityProperties(entityID, ['jointRotations']), //was jointOrientations
+ jointPositions = Entities.getEntityProperties(entityID, ['jointTranslations']), //was jointPositions
+ //selectedIndex = jointNames.indexOf(this.selectedJointName);
+ selectedIndex = Entities.getJointIndex( entityID, this.selectedJointName );
+
+ if (!this.debugEntityIDs) {
+ this.debugEntityIDs = this.createIndicators(jointNames);
+ }
+
+ // batch all updates into a single call (using the editOverlays({ id: {props...}, ... }) API)
+ var updatedOverlays = this.debugEntityIDs.reduce(function(updates, id, i) {
+ updates[id] = {
+ position: jointPositions.jointTranslations[i],
+ rotation: jointOrientations.jointRotations[i],
+ color: i === selectedIndex ? DebugControls.COLOR_SELECTED : DebugControls.COLOR_DEFAULT,
+ solid: i === selectedIndex
+ };
+ return updates;
+ }, {});
+ //Entities.editOverlays(updatedOverlays);
+ },
+
+ _onMousePressEvent: function(evt) {
+ if (!evt.isLeftButton || !this.enableIndicators || !this.debugEntityIDs) {
+ return;
+ }
+ var ray = Camera.computePickRay(evt.x, evt.y),
+ hit = Entities.findRayIntersection(ray, true, this.debugEntityIDs);
+
+ hit.jointIndex = this.debugEntityIDs.indexOf(hit.entityID);
+ hit.jointName = this.jointNames[hit.jointIndex];
+ this.jointSelected(hit);
+ }
+ };
+
+ if ('$debugControls' in doppleganger) {
+ throw new Error('only one set of debug controls can be added per doppleganger');
+ }
+ var debugControls = new DebugControls();
+ doppleganger.$debugControls = debugControls;
+
+ function onMousePressEvent(evt) {
+ if (evt.isRightButton) {
+ if (evt.isShifted) {
+ debugControls.enableIndicators = !debugControls.enableIndicators;
+ if (!debugControls.enableIndicators) {
+ debugControls.removeIndicators();
+ }
+ } else {
+ doppleganger.mirrored = !doppleganger.mirrored;
+ }
+ }
+ }
+
+ doppleganger.activeChanged.connect(function(active) {
+ if (active) {
+ debugControls.start();
+ doppleganger.jointsUpdated.connect(debugControls, 'onJointsUpdated');
+ Controller.mousePressEvent.connect(onMousePressEvent);
+ } else {
+ Controller.mousePressEvent.disconnect(onMousePressEvent);
+ doppleganger.jointsUpdated.disconnect(debugControls, 'onJointsUpdated');
+ debugControls.stop();
+ }
+ });
+
+ debugControls.jointSelected.connect(function(hit) {
+ debugControls.selectedJointName = hit.jointName;
+ if (hit.jointIndex < 0) {
+ return;
+ }
+ hit.mirroredJointName = Doppleganger.getMirroredJointNames([hit.jointName])[0];
+ log('selected joint:', JSON.stringify(hit, 0, 2));
+ });
+
+ Script.scriptEnding.connect(debugControls, 'removeIndicators');
+
+ return doppleganger;
+};
diff --git a/tutorial/fonts/LICENSE.txt b/tutorial/fonts/LICENSE.txt
new file mode 100644
index 0000000..75b5248
--- /dev/null
+++ b/tutorial/fonts/LICENSE.txt
@@ -0,0 +1,202 @@
+
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+
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+ of your accepting any such warranty or additional liability.
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+ APPENDIX: How to apply the Apache License to your work.
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+ To apply the Apache License to your work, attach the following
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+ Copyright [yyyy] [name of copyright owner]
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+
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diff --git a/tutorial/fonts/Roboto-Bold.ttf b/tutorial/fonts/Roboto-Bold.ttf
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+
+
+
+
+
+ Quick Configuration
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Welcome to Overte!
+
+
+
+
+ Let's get you setup to experience the virtual world.
+ First, we need to select some performance and graphics quality options.
+ Press Continue when you are ready.
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Quality
+
+
+
+
+ What level of visual quality would you like?
+ Remember! If you do not have a powerful computer, you may want to set this to low or medium at most.
+
+
Very Low Quality Slow Laptop / Very Slow Computer
+
Low Quality Average Laptop / Slow Computer
+
Medium Quality Average Computer - Recommended
+
High Quality Gaming Computer
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Performance
+
+
+
+
+ Do you want a smooth experience (high refresh rate) or do you want to conserve power and resources (low refresh rate) on your computer?
+ Note: This does not apply to virtual reality headsets.
+
+
Not Smooth (20 Hz) Conserve Power
+
Smooth (30 Hz) Use Average Resources
+
Very Smooth (60 Hz) Use Maximum Resources - Recommended
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Display Name
+
+
+
+
+ What should people call you?
+ This is simply a nickname, it will be shown in place of your username (if you have one).
+
+ NAME:
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
All done!
+
+
+
+
+ Now you're almost ready to go!
+ Press Complete to save your setup.
+ Then take a look at the other information kiosks after completing this wizard.
+