Skip to content

Eye-Tracking Classroom / StarGazer

Go to a project
Commit 38964de7 by Alexander Bazo
Options

Fix gaze positions, provide fake gaze data and add start screen

parent 1baf6278
Inline Side-by-side
Showing with 311 additions and 66 deletions
index.html
...@@ -8,13 +8,12 @@ ...@@ -8,13 +8,12 @@
</head> </head>
<body> <body>
<header> <div id="startScreen">
<h1>Star Gazer</h1> <div id="startTitle">Star Gazer 2000</div>
<canvas> <div id="startButton">Start Game</div>
</div>
<canvas class="hidden">
</canvas> </canvas>
</header>
<content>
</content>
<script type="application/javascript" src="vendors/gazeclient.js"></script> <script type="application/javascript" src="vendors/gazeclient.js"></script>
<script type="module" src="resources/js/index.js"></script> <script type="module" src="resources/js/index.js"></script>
</body> </body>
......
resources/css/default.css
/* colors: https://lospec.com/palette-list/spf-80 */
@font-face {
font-family: "ShareTech";
src: url("../fonts/ShareTechMono/ShareTechMono-Regular.ttf");
}
.hidden {
display: none;
}
body {
margin: 0;
padding: 0;
font-family: "ShareTech";
}
#startScreen {
width: 100vw;
height: 100vh;
background: rgb(0, 0, 0);
}
#startTitle {
position: relative;
width: 60vw;
height: 10vh;
top: 20vh;
margin: 0 auto;
text-align: center;
line-height: 10vh;
font-size: 10vh;
color: #FFF;
text-shadow: 5px 5px 5px #611894;
}
#startButton {
position: relative;
width: 30vw;
height: 10vh;
top: 30vh;
margin: 0 auto;
border-radius: 5px;
border-width: 5px;
border-style: solid;
background-color: #1b744a;
border-color: #aaffd8;
text-align: center;
line-height: 10vh;
font-size: 5vh;
color: #FFF;
}
#startButton:hover {
cursor: pointer;
background-color: #aaffd8;
border-color: #1b744a;
color: #1b744a;
}
canvas {
cursor: none;
}
\ No newline at end of file
resources/fonts/ShareTechMono/OFL.txt 0 → 100644
Copyright (c) 2012, Carrois Type Design, Ralph du Carrois (post@carrois.com www.carrois.com), with Reserved Font Name 'Share'
This Font Software is licensed under the SIL Open Font License, Version 1.1.
This license is copied below, and is also available with a FAQ at:
http://scripts.sil.org/OFL
-----------------------------------------------------------
SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
-----------------------------------------------------------
PREAMBLE
The goals of the Open Font License (OFL) are to stimulate worldwide
development of collaborative font projects, to support the font creation
efforts of academic and linguistic communities, and to provide a free and
open framework in which fonts may be shared and improved in partnership
with others.
The OFL allows the licensed fonts to be used, studied, modified and
redistributed freely as long as they are not sold by themselves. The
fonts, including any derivative works, can be bundled, embedded,
redistributed and/or sold with any software provided that any reserved
names are not used by derivative works. The fonts and derivatives,
however, cannot be released under any other type of license. The
requirement for fonts to remain under this license does not apply
to any document created using the fonts or their derivatives.
DEFINITIONS
"Font Software" refers to the set of files released by the Copyright
Holder(s) under this license and clearly marked as such. This may
include source files, build scripts and documentation.
"Reserved Font Name" refers to any names specified as such after the
copyright statement(s).
"Original Version" refers to the collection of Font Software components as
distributed by the Copyright Holder(s).
"Modified Version" refers to any derivative made by adding to, deleting,
or substituting -- in part or in whole -- any of the components of the
Original Version, by changing formats or by porting the Font Software to a
new environment.
"Author" refers to any designer, engineer, programmer, technical
writer or other person who contributed to the Font Software.
PERMISSION & CONDITIONS
Permission is hereby granted, free of charge, to any person obtaining
a copy of the Font Software, to use, study, copy, merge, embed, modify,
redistribute, and sell modified and unmodified copies of the Font
Software, subject to the following conditions:
1) Neither the Font Software nor any of its individual components,
in Original or Modified Versions, may be sold by itself.
2) Original or Modified Versions of the Font Software may be bundled,
redistributed and/or sold with any software, provided that each copy
contains the above copyright notice and this license. These can be
included either as stand-alone text files, human-readable headers or
in the appropriate machine-readable metadata fields within text or
binary files as long as those fields can be easily viewed by the user.
3) No Modified Version of the Font Software may use the Reserved Font
Name(s) unless explicit written permission is granted by the corresponding
Copyright Holder. This restriction only applies to the primary font name as
presented to the users.
4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
Software shall not be used to promote, endorse or advertise any
Modified Version, except to acknowledge the contribution(s) of the
Copyright Holder(s) and the Author(s) or with their explicit written
permission.
5) The Font Software, modified or unmodified, in part or in whole,
must be distributed entirely under this license, and must not be
distributed under any other license. The requirement for fonts to
remain under this license does not apply to any document created
using the Font Software.
TERMINATION
This license becomes null and void if any of the above conditions are
not met.
DISCLAIMER
THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
OTHER DEALINGS IN THE FONT SOFTWARE.
resources/js/Config.js 0 → 100644
var Config = {
GAZE_SERVER_URL: "ws://localhost:8001/gaze",
TARGET_FPS: 120,
SHOW_FPS: true,
USE_MOUSE_INPUT_AS_FAKE_GAZE_DATA: true,
USE_LOGGER: true,
SCREEN_WIDTH: screen.width,
SCREEN_HEIGHT: screen.height,
};
Object.freeze(Config);
export default Config;
\ No newline at end of file
resources/js/game/GameManager.js
import Logger from "../utils/Logger.js"; const BACKGROUND_COLOR = "#333",
DEFAULT_GAZE_POINT_RADIUS = 15,
const BACKGROUND_COLOR = "rgba(30,30,30,0.5)",
DEFAULT_GAZE_POINT_RADIUS = 10,
DEFAULT_GAZE_POINT_COLOR = "#ff007b", DEFAULT_GAZE_POINT_COLOR = "#ff007b",
FPS_COLOR = "#ffbb00", FPS_FONT = "16px ShareTech",
FPS_COLOR = "#ffffff",
MAX_GAZE_POINT_AGE = 500; MAX_GAZE_POINT_AGE = 500;
var lastUpdate, var lastUpdate,
lastDelta; lastDelta,
fpsBuffer = [];
class GameManger { class GameManger {
...@@ -17,7 +17,7 @@ class GameManger { ...@@ -17,7 +17,7 @@ class GameManger {
setCanvas(canvas) { setCanvas(canvas) {
this.canvas = canvas; this.canvas = canvas;
this.context = this.canvas.getContext("2d"); this.context = this.canvas.getContext("2d", { alpha: false });
this.canvas.style.backgroundColor = BACKGROUND_COLOR; this.canvas.style.backgroundColor = BACKGROUND_COLOR;
} }
...@@ -87,12 +87,13 @@ class GameManger { ...@@ -87,12 +87,13 @@ class GameManger {
let now = Date.now(); let now = Date.now();
this.context.fillStyle = DEFAULT_GAZE_POINT_COLOR; this.context.fillStyle = DEFAULT_GAZE_POINT_COLOR;
for (let item of this.gazePoints) { for (let item of this.gazePoints) {
let relativeAge = 1 - ((now - item[1].createdAt) /
MAX_GAZE_POINT_AGE);
this.context.save(); this.context.save();
this.context.globalAlpha = 1 - (now - item[1].createdAt) / this.context.globalAlpha = relativeAge;
MAX_GAZE_POINT_AGE;
this.context.beginPath(); this.context.beginPath();
this.context.ellipse(item[1].targetX, item[1].targetY, this.context.ellipse(item[1].targetX, item[1].targetY,
DEFAULT_GAZE_POINT_RADIUS, DEFAULT_GAZE_POINT_RADIUS, Math.PI / 4, relativeAge * DEFAULT_GAZE_POINT_RADIUS, relativeAge * DEFAULT_GAZE_POINT_RADIUS, Math.PI / 4,
0, 2 * Math.PI); 0, 2 * Math.PI);
this.context.fill(); this.context.fill();
this.context.closePath(); this.context.closePath();
...@@ -101,11 +102,17 @@ class GameManger { ...@@ -101,11 +102,17 @@ class GameManger {
} }
drawFrameRate() { drawFrameRate() {
let fps = parseInt(1000 / lastDelta); let fps = parseInt(1000 / lastDelta),
averageFps;
fpsBuffer.push(fps);
if(fpsBuffer.length === this.fps) {
averageFps = parseInt(fpsBuffer.reduce((a,b) => a + b, 0) / fpsBuffer.length);
fpsBuffer.shift();
}
this.context.beginPath(); this.context.beginPath();
this.context.font = "20px Arial"; this.context.font = FPS_FONT;
this.context.fillStyle = FPS_COLOR; this.context.fillStyle = FPS_COLOR;
this.context.fillText(`FPS: ${fps}`, 30, 30); this.context.fillText(`FPS: ${averageFps}`, 30, 30);
this.context.closePath(); this.context.closePath();
} }
......
resources/js/game/StarGazer.js
import Logger from "../utils/Logger.js"; import Logger from "../utils/Logger.js";
import GameManager from "./GameManager.js"; import GameManager from "./GameManager.js";
var canvas, gm; var canvas, gm, provider;
class StarGazer { function init(config) {
init(config) {
Logger.log("Starting StarGazer game"); Logger.log("Starting StarGazer game");
canvas = config.canvas; canvas = config.canvas;
gm = new GameManager(); gm = new GameManager();
...@@ -16,15 +14,18 @@ class StarGazer { ...@@ -16,15 +14,18 @@ class StarGazer {
} }
gm.setSize(config.width, config.height); gm.setSize(config.width, config.height);
gm.start(); gm.start();
} provider = config.gazeDataProvider;
provider.addEventListener("dataavailable", onGazeUpdate);
}
onGazeUpdate(gazePoint) { function onGazeUpdate(event) {
let gazePoint = event.data;
gazePoint.linkTo(canvas); gazePoint.linkTo(canvas);
if (gazePoint.hasLink) { if (gazePoint.hasLink) {
gm.addGazePoint(gazePoint); gm.addGazePoint(gazePoint);
} }
}
} }
export default new StarGazer(); export default {
\ No newline at end of file init: init,
};
\ No newline at end of file
resources/js/gaze/FakeGazeDataProvider.js 0 → 100644
import GazeDataProvider from "./GazeDataProvider.js";
import Event from "../utils/Event.js";
import GazePoint from "./GazePoint.js";
class FakeGazeDataProvider extends GazeDataProvider {
constructor() {
super();
}
start() {
window.addEventListener("mousemove", this.onMouseDataAvailable.bind(this));
}
onMouseDataAvailable(event) {
let gazeEvent = new Event("dataavailable", new GazePoint(event.screenX,
event.screenY));
this.notifyAll(gazeEvent);
}
}
export default FakeGazeDataProvider;
\ No newline at end of file
resources/js/gaze/GazeDataProvider.js 0 → 100644
/* global GazeClient */
import Observable from "../utils/Observable.js";
import Event from "../utils/Event.js";
import Logger from "../utils/Logger.js";
import GazePoint from "../gaze/GazePoint.js";
class GazeDataProvider extends Observable {
constructor() {
super();
}
start(url) {
this.gclient = new GazeClient();
this.gclient.connect(url);
this.gclient.addEventListener("connectionopened", this.onConnected.bind(this));
this.gclient.addEventListener("dataavailable", this.onGazeDataAvailable.bind(
this));
this.gclient.addEventListener("connectionclosed", this.onDisconnected.bind(this));
}
onConnected(event) {
Logger.log(event);
}
onGazeDataAvailable(event) {
let eyeX = (event.data.leftEyeX + event.data.rightEyeX) / 2,
eyeY = (event.data.leftEyeY + event.data.rightEyeY) / 2,
gazeEvent = new Event("dataavailable", new GazePoint(eyeX, eyeY));
this.notifyAll(gazeEvent);
}
onDisconnected(event) {
Logger.log(event);
}
}
export default GazeDataProvider;
\ No newline at end of file
resources/js/game/GazePoint.js → resources/js/gaze/GazePoint.js
class GazePoint { class GazePoint {
constructor(screenX, screenY, createdAt, id) { constructor(screenX, screenY) {
this.screenX = screenX; this.screenX = screenX;
this.screenY = screenY; this.screenY = screenY;
this.createdAt = Date.now(); this.createdAt = Date.now();
this.id = id || this.createdAt; this.id = this.createdAt;
} }
linkTo(node) { linkTo(node) {
let bb = node.getBoundingClientRect(), let bb = node.getBoundingClientRect(),
elementLeft = window.pageXOffset + bb.left, // Difference between height of browser window (including menus and decoration) and actual viewport height
elementTop = window.pageYOffset + bb.top, yOffSet = window.outerHeight - window.innerHeight,
elementRight = window.pageXOffset + bb.right, elementLeft = window.screenX + bb.left,
elementBottom = window.pageYOffset + bb.bottom, elementTop = window.screenY + bb.top + yOffSet,
elementRight = window.screenX + bb.right,
elementBottom = window.screenY + bb.bottom + yOffSet,
coordinates; coordinates;
if (this.screenX >= elementLeft && this.screenX <= elementRight && this if (this.screenX >= elementLeft && this.screenX <= elementRight && this
.screenY >= .screenY >=
......
resources/js/index.js
/* global GazeClient */ import Config from "./Config.js";
import Logger from "./utils/Logger.js"; import Logger from "./utils/Logger.js";
import StarGazer from "./game/StarGazer.js"; import StarGazer from "./game/StarGazer.js";
import GazePoint from "./game/GazePoint.js"; import FakeGazeDataProvider from "./gaze/FakeGazeDataProvider.js";
import GazeDataProvider from "./gaze/GazeDataProvider.js";
var gclient = new GazeClient(); var canvas = document.querySelector("canvas"),
starScreen = document.querySelector("#startScreen");
function init() { function init() {
if (Config.USE_LOGGER === true) {
Logger.enable(); Logger.enable();
initGazeClient(); }
initStarGazer(); document.querySelector("#startButton").addEventListener("click",
} prepareGame);
function initGazeClient() {
gclient.connect("ws://localhost:8001/gaze");
gclient.addEventListener("connectionopened", onConnected);
gclient.addEventListener("dataavailable", onGazeDataAvailable);
gclient.addEventListener("connectionclosed", onDisconnected);
} }
function initStarGazer() { function prepareGame() {
let dataProvider = getDataProvider();
StarGazer.init({ StarGazer.init({
canvas: document.querySelector("canvas"), canvas: canvas,
fps: 60, fps: Config.TARGET_FPS,
showFPS: true, showFPS: Config.SHOW_FPS,
width: 800, width: Config.SCREEN_WIDTH,
height: 800, height: Config.SCREEN_HEIGHT,
gazeDataProvider: dataProvider,
}); });
canvas.requestFullscreen().then(startGame);
} }
function onConnected(event) { function startGame() {
console.log(event); starScreen.classList.add("hidden");
} canvas.classList.remove("hidden");
function onGazeDataAvailable(event) {
let eyeX = (event.data.leftEyeX + event.data.rightEyeX) / 2,
eyeY = (event.data.leftEyeY + event.data.rightEyeY) / 2,
createdAt = event.data.trackerTimeStamp,
gazePoint = new GazePoint(eyeX, eyeY, createdAt);
StarGazer.onGazeUpdate(gazePoint);
} }
function onDisconnected(event) { function getDataProvider() {
console.log( event); let provider;
if (Config.USE_MOUSE_INPUT_AS_FAKE_GAZE_DATA === true) {
provider = new FakeGazeDataProvider();
} else {
provider = new GazeDataProvider();
}
provider.start(Config.GAZE_SERVER_URL);
return provider;
} }
init(); init();
\ No newline at end of file
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or sign in to comment