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tabletopwizard.html
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<body bgcolor=#808080>
<TABLE width=100% height=100%><TR align=center valign=middle><TD>
<table bgcolor=white border=0 cellpadding=0 cellspacing=0>
<tr valign=top>
<td><table>
<tr><td>
<center><canvas id=angleCanvas width=100 height=100</canvas>
<tr><td valign=top width=200><textarea id=textbox rows=10 cols=28></textarea>
<tr><td valign=top width=200 id=datalog>
</table>
<td>
<canvas id=canvas1></canvas>
<td valign=top width=20>
<td valign=top width=200>
<font face=courier><b>
</b>
<div id=palette></div>
<p>
<p> <b>drag mouse</b> to move
<br>an object or drawing
<p> <b>command+move mouse</b>
<br>to draw a drawing
<p> <b>shift+move mouse</b>
<br>to turn an object
<p> <b>delete key</b> to delete
<p> <b>. key</b> to animate
<p> <b>/ key</b> to toggle text
<td valign=top width=10>
</table>
</TABLE>
<script src=server/client.js></script>
<script src=js/wizard/things.js></script>
<script src=js/wizard/lib.js></script>
<script src=js/wizard/agent.js></script>
<script src=js/wizard/molecules.js></script>
<script src="js/util/peerjs.min.js"></script>
<script style='width:100%'>
let xf = t => (t - canvasWidth/2) / (canvasWidth/2) * .45;
let ixf = t => Math.max(-999, Math.min(999, t / .45 * canvasWidth/2 + canvasWidth/2 + .5 >> 0));
// INITIALIZE AUDIO VOLUME DETECTION
const peer = new Peer();
console.log('retrying peerserver');
clientConnections = {};
peer.on('disconnected', () => {
peer.reconnect();
console.log('retrying peerserver');
});
peer.on('open', () => {
window['peers'].wizardId = peer.id;
console.log(window['peers'])
});
peer.on('connection', (dataConnection) => {
clientConnections[dataConnection.peer] = {
open: false,
conn: dataConnection,
};
dataConnection.on('open', () => {
clientConnections[dataConnection.peer].open = true;
console.log('Client peer-to-peer connection established: ', dataConnection.peer);
window['peers'].clientIds = Object.keys(clientConnections);
})
dataConnection.on('close', () => {
delete clientConnections[dataConnection.peer];
console.log('Client peer-to-peer connection closed: ', dataConnection.peer);
window['peers'].clientIds = Object.keys(clientConnections);
})
dataConnection.on('data', (msg) => {
let client = msg.client;
if (! clientState[client])
clientState[client] = {};
clientState[client].active = 100;
let state = clientState[client];
switch (msg.op) {
case 'speaking':
state.isSpeaking = msg.status;
break;
case 'event':
let part = msg.part;
switch (msg.event.type) {
case 'move':
state[part] = msg.event;
break;
case 'press':
state['isPressed' + part] = true;
let found = findAt(state[part]);
if (found.id >= 0) {
let isAlreadyGrabbed = false;
for (let c in clientState)
if (c != clientID)
isAlreadyGrabbed ||= c != client && (clientState[c].left.id == found.id ||
clientState[c].right.id == found.id);
if (! isAlreadyGrabbed)
state[part].id = found.id;
}
else if(enableDrawing)
drawingPress(client, part);
break;
case 'drag': // DRAG AN OBJECT TO MOVE IT.
if (state[part]) {
// IGNORE DRAG EVENTS THAT ARE NOT OVER THE TABLE
let x = msg.event.x - w/2;
let y = msg.event.y - w/2;
if (Math.sqrt(x*x + y*y) > w/2)
break;
let dx = msg.event.x - state[part].x;
let dy = msg.event.y - state[part].y;
// MOVE AN OBJECT
if (state[part].id !== undefined) {
let L = state.left, R = state.right; // IF BOTH HANDS GRAB THE SAME
if (part=='left' && L.id == R.id && objects[L.id].trackedId < 0) { // OBJECT, THEN SIMULTANEOUSLY
objects[L.id].x = (L.x + R.x) / 2; // MOVE AND TURN THE OBJECT.
objects[L.id].y = (L.y + R.y) / 2;
objects[L.id].angle = -Math.atan2(R.y-L.y, R.x-L.x) * 180 / Math.PI;
}
else if(objects[state[part].id].trackedId < 0){ // ELSE JUST MOVE THE OBJECT.
objects[state[part].id].x += dx;
objects[state[part].id].y += dy;
}
}
// MOVE OR DRAW A DRAWING
else if(enableDrawing)
drawingDrag(client, part, msg.event.x, msg.event.y);
state[part].x = msg.event.x;
state[part].y = msg.event.y;
}
break;
case 'doublepress':
state['isDoublePressed' + part] = true;
let foundObj = findAt(state[part]);
if(objects[foundObj.id])
objects[foundObj.id].color = '#' + Math.floor(Math.random() * 16777215).toString(16).padStart(6, '0');;
break;
case 'release':
window.grabbedObj = null;
if(enableDrawing)
drawingRelease(client, part);
state['isPressed' + part] = false;
if (state[part])
delete state[part].id;
break;
}
break;
}
})
});
// START SPEECH RECOGNITION
let speechRecognition = new webkitSpeechRecognition();
speechRecognition.continuous = true;
speechRecognition.lang = 'en-US';
speechRecognition.interimResults = false;
speechRecognition.maxAlternatives = 1;
speechRecognition.onresult = e => console.log(window.speech = e.results[e.resultIndex][0].transcript);
speechRecognition.onend = () => speechRecognition.start();
speechRecognition.start();
// MAKE A LIST OF SPEECH-RECOGNIZABLE THINGS
let things_and_groups = {};
for (let thing in things)
things_and_groups[thing] = 1;
for (let groupName in groups)
things_and_groups[groupName] = 1;
// SET THE SIZE OF THE DISPLAY CANVAS
canvas1.width = canvasWidth;
canvas1.height = canvasWidth;
// DECLARE VARIABLES
let colorIndex = 0, currentColor = 'white',
angleIndex = 0, currentAngle = 0;
let w = canvas1.width, h = canvas1.height;
let id = -1, pp, isEnter = false, isShift = false, isControl = false, isMeta = false, isMinus = false, showAgents = false, showTrackedObjects = false;
let speakingClient;
let clientState = {};
let isAnyObjectInFocus = false;
let isAnimating = false, animateT = 0, animateTime = 0;
let showSpeech = true;
let enableSpeechAddObj = true;
let enableSpeechDeletObj = true;
let enableDrawing = false;
let addTrackObj = false;
// RETRIEVE MEASUREMENTS OF ONE ATOM OF A MOLECULE
let atomXYR = (obj,n) => {
let P = moleculesInfo[obj.type].positions;
let scale = w/2 * thingsScale;
return [ .6 * scale * P[n][0] + obj.x,
.6 * scale * P[n][2] + obj.y,
.6 * scale * getAtomInfo(obj.type, n).radius / 150 ];
}
// STANDARD COLORS AND A FUNCTION TO CONVERT RGB TO HEX CODE
let color = 'white brown red orange yellow green blue magenta violet black'.split(' ');
let rgb = [[1,1,1],[.2,.05,.025],[1,0,0],[1,.15,0],[1,1,0],[0,.5,0],[0,.25,1],[.25,0,1],[1,0,.25],[0,0,0]];
let hx1 = n => '0123456789abcdef'.charAt(n);
let hx2 = n => hx1(n>>4) + hx1(n&15);
let hx3 = r => hx2(255 * Math.sqrt(r) >> 0);
let hex = rgb => '#' + hx3(rgb[0]) + hx3(rgb[1]) + hx3(rgb[2]);
{
// SHOW THE COLOR PALETTE
let s = '<center> <br><b>KEY TO SET COLOR</b>';
s += '<table bgcolor=#d0d0d0><tr><td><big>';
for (let n = 0 ; n < 10 ; n++)
s += '<font color=' + hex(rgb[n]) + '>' + n + '</font>';
s += '</table><p>';
currentColor = hex(rgb[0]);
// LIST THE OBJECT SHAPES
s += '<table><tr><td><b><center>KEY TO ADD OBJECT</center></b>';
let ch = 65;
for (let name in things)
s += ' ' + String.fromCharCode(ch++)
+ ' ' + name.replace('_',' ') + ' </font><br>';
s += '</table>';
palette.innerHTML = s;
}
// CONNECT TO THE SERVER
let server = new Server(2024);
server.alwaysLoadFromStorage();
server.init('tabletop', {});
server.init('peers', {});
let objects = {};
let drawings = {};
let agent = new Agent();
let agents = { 0: agent };
let agentsInfo = { 0: { x:0, y:0, h:0 } };
/*
let agents = { };
let agentsInfo = { };
*/
// CHANGE THE CURRENT ANGLE BY SOME DELTA
let changeAngle = (angle, delta) => (3600 + angle + delta) % 360;
let turn = delta => currentAngle = changeAngle(currentAngle, delta);
// CHANGE THE CURRENT COLOR
let setColor = rgb => {
currentColor = hex(rgb);
let id = find().id;
let obj = objects[id];
if (obj)
obj.color = currentColor;
}
let isBelowDrawingHeight = (client, hand) => {
if (client == clientID)
return isMeta;
return clientState[client][hand].b;
}
let isAnyoneLookingAtTheTable = () => {
for (let client in clientState)
if (isOnTable(clientState[client].head))
return true;
return false;
}
let typeToId = {
round: 1,
table: 2,
chair: 3,
bigtable: 4
}
// ADD A NEW OBJECT OF A SPECIFIED SHAPE AT THE CURSOR
let addObject = (name, client) => {
// FIND AN UNUSED ID
let id = 0;
for ( ; id < 100 ; id++)
if (objects[id] === undefined)
break;
// FIND WHERE TO PLACE THE NEW OBJECT
let p = pp;
if (client !== undefined && clientState[client]) {
let checkPart = part => {
if (! isOnTable(p))
p = findAt(clientState[client][part]).p;
}
checkPart('left');
checkPart('right');
checkPart('head');
}
p = isOnTable(p) ? p : pp;
// ADD THE OBJECT TO THE MODEL
// ADD THE OBJECT TO THE MODEL
objects[id] = {
type: name,
trackedId: typeToId[name] ? typeToId[name] : -1, // see if this type of object is a tracked object
x: p.x+.5>>0, y: p.y+.5>>0, z: 0,
color: currentColor,
angle: currentAngle,
quaternion: { x:0, y:0, z:0, w:1 }
}
tabletop.objects = objects;
}
let unpackInfo = (string, lo, hi) => {
if (lo === undefined) { lo = 0; hi = 1; } else if (hi === undefined) { hi = lo ; lo = 0; }
let C = " !#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[]^_`abcdefghijklmnopqrstuvwxyz{|}~";
let unpack = (a, b) => (C.indexOf(a) + C.indexOf(b) / 92) / 92;
let a = [];
for (let n = 0 ; n < string.length ; n += 2)
a.push(lo + (hi-lo) * unpack(string.charAt(n), string.charAt(n+1)));
return a;
}
let quatToEuler = (q) => {
let x = q.x;
let y = q.z;
let z = q.y;
let w = q.w;
let yaw = Math.atan2(2 * (w * z + x * y), 1 - 2 * (y * y + z * z));
let angle = yaw * (180 / Math.PI);
return angle;
};
// UPDATE TRACKED OBJECT TRANSFORMATION
let updateTrackedObject = () => {
let objects = tabletop.objects;
server.track(); // PROBLEM: do we need to call it here since it is already called in clay.js
if(!window.trackInfo) return;
if (window.trackInfo && window.trackInfo.length == 0) {
console.log(window.timeStamp);
return;
}
let info = unpackInfo(window.trackInfo, -2, 2);
let SCALE = 1.02;
for (let i = 0; i < Object.keys(typeToId).length; i++) { // PROBLEM: remember to start from the object index, not the headsets
let tq = [parseFloat(info[i*7]), parseFloat(info[i*7+1]), parseFloat(info[i*7+2]), parseFloat(info[i*7+3]), parseFloat(info[i*7+4]), parseFloat(info[i*7+5]), parseFloat(info[i*7+6])];
let quaternion = { x:-tq[3], y:-tq[4], z:tq[5], w:tq[6] };
let x = tq[0]*SCALE;
let y = tq[1]*SCALE;
let z = -tq[2]*SCALE;
// pass those transformation info to tracked object
for(let j = 0; j < Object.keys(objects).length; j ++) {
let obj = objects[j];
if(obj == null)
continue;
if(obj.trackedId == i + 1) {
obj.x = ixf(x);
obj.y = ixf(z);
obj.z = y;
obj.quaternion = quaternion;
obj.angle = quatToEuler(quaternion);
break;
}
}
}
tabletop.objects = objects;
}
setInterval(updateTrackedObject, 10);
// RESPOND TO KEYBOARD EVENTS
let kc = [0,0,0,0,0,0,0,0,0,0];
let mixColors = () => {
let c = [0,0,0], n = 0;
for (let i = 0 ; i < kc.length ; i++)
if (kc[i]) {
for (let j = 0 ; j < 3 ; j++)
c[j] += 1 - rgb[i][j];
n++;
}
setColor([1 - c[0]/n, 1 - c[1]/n, 1 - c[2]/n]);
for (let i = 0 ; i < kc.length ; i++)
kc[i] = 0;
}
document.addEventListener('keydown', e => {
switch (e.key) {
case 'Enter':
isEnter = true;
break;
case 'Shift':
isShift = true;
id = findAt(pp).id;
break;
case 'Control':
isControl = true;
break;
case 'Meta':
isMeta = true;
drawingPress(clientID, 'left');
break;
case '-':
isMinus = true;
break;
}
if (e.keyCode >= 48 && e.keyCode < 58)
kc[e.keyCode - 48] = 1;
});
let animationTargets = [];
let startAnimation = () => {
animationTargets = [];
for (let did in drawings) {
let stroke = drawings[did].strokes[0];
let found = findAt({ x: stroke[0], y: stroke[1] });
if (found.id >= 0) {
let obj = objects[found.id];
animationTargets.push({ id: found.id, did: did, x: obj.x, y: obj.y });
}
}
animateT = 0;
isAnimating = true;
}
let evalAnimation = () => {
if (isAnimating) {
for (let n = 0 ; n < animationTargets.length ; n++) {
let target = animationTargets[n];
let stroke = drawings[target.did].strokes[0];
let p0 = sampleStroke(stroke, 0);
let p1 = sampleStroke(stroke, animateT);
let obj = objects[target.id];
obj.x = target.x + p1.x - p0.x;
obj.y = target.y + p1.y - p0.y;
}
}
if (animateT >= 1) {
for (let n = 0 ; n < animationTargets.length ; n++) {
let target = animationTargets[n];
let obj = objects[target.id];
obj.x = target.x;
obj.y = target.y;
}
animateT = 0;
animateTime = 0;
isAnimating = false;
}
}
document.addEventListener('keyup', e => {
switch (e.key) {
case 'Enter': isEnter = false; pp = {x:w/2, y:h/2}; break;
case 'Shift': isShift = false; id = -1; break;
case 'Control': isControl = false; break;
case 'Meta': drawingRelease(clientID, 'left'); isMeta = false; break;
case '-': isMinus = false; break;
case '.': startAnimation(); break;
case '/': showSpeech = ! showSpeech; break;
case 'Backspace':
let i = findAt(pp).id;
if (i >= 0)
delete objects[i];
else
for (let id in drawings)
if (isClientAtDrawing(clientID, drawings[id]))
delete drawings[id];
break;
default:
if (! isControl)
return;
// CONTROL-SPACE TOGGLES SHOWING AGENTS
if (e.keyCode == 32) {
showAgents = ! showAgents;
return;
}
if (e.keyCode == 38) {
showTrackedObjects = !showTrackedObjects
return;
}
// IF RELEASING A NUMBER KEY
if (e.keyCode >= 48 && e.keyCode < 58) {
let id = e.keyCode - 48;
// DELETE AN OBJECT IF HOLDING DOWN THE '-' KEY
if (isMinus)
delete objects[id];
// ELSE MIX COLORS BY COMBINING NUMBER KEYS
else {
kc[id] = 2;
let nDown = 0;
for (let i = 0 ; i < 10 ; i++)
nDown += kc[i] == 1;
if (nDown == 0)
mixColors();
}
}
// ELSE TYPE A LETTER KEY TO ADD AN OBJECT
else {
let n = 0, i = e.keyCode - 65;
for (let name in things)
if (n++ == i) {
addObject(name, clientID);
break;
}
}
break;
}
});
// GET THE (X,Y) POSITION ON THE CANVAS FOR THIS EVENT
let getP = e => {
let r = canvas1.getBoundingClientRect();
return { x: e.clientX - r.left, y: e.clientY - r.top };
}
// DETERMINE WHETHER A PIXEL IS ON THE TABLE
let isOnTable = p => {
if (! p)
return false;
let x = (p.x - w / 2) / (w / 2);
let y = (p.y - w / 2) / (w / 2);
return x * x + y * y < 1;
}
// DETERMINE WHETHER A PIXEL IS WITHIN AN OBJECT
let isWithin = (obj, p) => {
let x = obj.x, y = obj.y, angle = obj.angle, thing = things[obj.type];
let c = Math.cos(-angle * Math.PI / 180);
let s = Math.sin(-angle * Math.PI / 180);
// IF THE OBJECT HAS NO GEOMETRY, IT'S A MOLECULE
let isGltf = groups.gltf && groups.gltf.hasOwnProperty(obj.type);
if (thing.items.length == 0 && !isGltf) {
let x = p.x - obj.x;
let y = p.y - obj.y;
let px = c * x + s * y + obj.x;
let py = -s * x + c * y + obj.y;
for (let n = 0 ; n < moleculesInfo[obj.type].positions.length ; n++) {
let xyr = atomXYR(obj, n);
let dx = xyr[0] - px;
let dy = xyr[1] - py;
if (dx * dx + dy * dy < 6 * xyr[2] * xyr[2])
return true;
}
return false;
}
// ROTATE THE PIXEL AROUND THE OBJECT'S CENTER OPPOSITE TO THE OBJECT'S ROTATION
let M = [ c, -s, s, c, x-c*x-s*y, y+s*x-c*y ];
let X = M[0] * p.x + M[2] * p.y + M[4];
let Y = M[1] * p.x + M[3] * p.y + M[5];
// RETURN TRUE IF THE PIXEL IS IN ANY OF THE OBJECT'S COMPONENT SHAPES
let scale = w/2 * thingsScale;
if(isGltf) {
let gltfSize = 20;
let x = obj.x;
let y = obj.y;
if (X >= x - gltfSize && X < x + gltfSize && Y > y - gltfSize && Y < y + gltfSize)
return true;
}
for (let n = 0 ; n < thing.items.length ; n++) {
let item = thing.items[n];
let x = scale * item.m[0] + obj.x;
let y = scale * item.m[2] + obj.y;
let w = scale * item.s[0];
let h = scale * item.s[2];
switch (item.type) {
case 'cube':
if (X >= x-w && X < x+w && Y > y-h && Y < y+h)
return true;
break;
case 'tubeY':
case 'sphere':
let dx = (X - x) / w;
let dy = (Y - y) / h;
if (dx * dx + dy * dy < 1)
return true;
break;
}
}
return false;
}
// FIND WHICH OBJECT IS AT A PIXEL
let findAt = p => {
if (isOnTable(p))
for (let id in objects)
if (isWithin(objects[id], p))
return { id: id, p: p };
return { id: -1, p: p };
}
// FIND WHICH OBJECT IS AT A PART OF A CLIENT
let findPartOfClient = (part, client) => {
let found = findAt(clientState[client][part]);
if (found.id >= 0)
found.client = client;
return found;
}
// FIND WHICH OBJECT IS AT A PART OF EITHER ONE OR ALL CLIENTS
let findPart = (part, client) => {
if (client !== undefined && clientState[client] !== undefined)
return findPartOfClient(part, client);
let found = { id: -1, p: { x: 0, y: 0 }, client: -1 };
for (let client in clientState)
if ((found = findPartOfClient(part, client)).id >= 0)
break;
return found;
}
// FIND WHAT OBJECT IS AT ANY PART OF A CLIENT
let find = client => {
let found = { id: findAt(pp).id, p: pp };
if (found.id == -1) found = findPart('left' , client);
if (found.id == -1) found = findPart('right', client);
if (found.id == -1) found = findPart('head' , client);
return found;
}
// ----------------------------------- RESPOND TO MOUSE EVENTS
// ON MOUSE DOWN, TRY TO SELECT AN OBJECT
let isMouseDown = false;
canvas1.onmousedown = e => {
isMouseDown = true;
id = find().id;
if (id == -1) {
drawingPress(clientID, 'left');
clientState[clientID].left = getP(e);
}
}
// ON MOUSE MOVE, DO LOTS OF THINGS
canvas1.onmousemove = e => {
let p = getP(e);
// HANDLE INTERACTION WITH DRAWINGS
let isDrawing = (isMeta || isMouseDown || isShift) && id == -1;
if (isDrawing) {
if (isShift) {
let id = clientState[clientID].selectedDrawingleft;
if (id >= 0)
drawingTurn(id, p.x - pp.x);
}
else
drawingDrag(clientID, 'left', p.x, p.y);
}
clientState[clientID].left = p;
if (isDrawing) {
pp = p;
return;
}
// HANDLE INTERACTION WITH OBJECTS
let obj = objects[isShift && id>=0 ? id : find().id]; // IF SHIFT USE SELECTED OBJECT,
// ELSE USE OBJECT AT THE CURSOR
if (obj) { // IF AN OBJECT IS SELECTED
currentAngle = obj.angle; // THEN SET CURRENT ANGLE AND COLOR TO MATCH IT
currentColor = obj.color;
}
if (objects[id] !== undefined && objects[id].trackedId < 0) { // IF THERE IS A SELECTED OBJECT
let obj = objects[id];
if (isShift) { // THEN IF SHIFT KEY IS DOWN
turn(p.x - pp.x);
obj.angle = currentAngle; // THEN ROTATE SELECTED OBJECT
}
else { // ELSE TRANSLATE SELECTED OBJECT
let x = obj.x + p.x - pp.x;
let y = obj.y + p.y - pp.y;
if (isOnTable({x: x, y: y})) {
obj.x = x;
obj.y = y;
}
}
window.grabbedObj = id;
}
else if (isShift) // ELSE IF SHIFT KEY IS DOWN
turn(p.x - pp.x); // THEN ROTATE CURRENT ANGLE
pp = p;
}
// ON MOUSE UP, UNSELECT OBJECT
canvas1.onmouseup = e => {
if (id == -1)
drawingRelease(clientID, 'left');
isMouseDown = false;
window.grabbedObj = null;
id = -1;
}
// -----------------------------------
// RETURN BLACK OR WHITE -- WHICHEVER IS MOST DIFFERENT FROM COLOR ARG
let blackOrWhite = color => {
let h = 0;
for (let k = 0 ; k < 3 ; k++) {
let c = color.charCodeAt(2*k+1);
h += (c < 64 ? c-48 : c-96+10) * (k==0 ? 1 : k==1 ? 1.3 : .7);
}
return h > 30 ? 'black' : 'white';
}
// DRAW SOMETHING WITH A TRANSLATION + ROTATION
let rotatedDrawing = (ctx,x,y,angle,drawingProc) => {
let c = Math.cos(angle * Math.PI / 180);
let s = Math.sin(angle * Math.PI / 180);
ctx.save();
ctx.setTransform(c, -s, s, c, x-c*x-s*y, y+s*x-c*y);
drawingProc();
ctx.restore();
}
// CHECK FOR ANY CLIENT FOCUSING ON A DRAWING
let isPointOnDrawing = (p, drawing) => {
if (p === undefined)
return false;
for (let n = 0 ; n < drawing.strokes.length ; n++) {
let stroke = drawing.strokes[n];
for (let k = 0 ; k < stroke.length ; k += 2) {
let x = p.x - stroke[k];
let y = p.y - stroke[k+1];
if (x*x + y*y < w/50 * w/50)
return true;
}
}
return false;
}
// CHECK IF EITHER ONE OR ALL PARTS OF A CLIENT TOUCH A DRAWING
let isClientAtDrawing = (client, drawing, part) => {
if (client === undefined)
client = clientID;
if (client == clientID)
return isPointOnDrawing(pp, drawing);
if (part === undefined) {
for (let part in {left:1, right:1, head:1})
if (isClientAtDrawing(client, drawing, part))
return true;
return false;
}
return isPointOnDrawing(clientState[client][part], drawing);
}
// HANDLE DRAWING EVENTS
let drawingPress = (client, part) => {
let state = clientState[client];
// IF ABOVE DRAWING HEIGHT, SELECT AN EXISTING DRAWING
delete state['selectedDrawing' + part];
if (! isBelowDrawingHeight(client, part)) {
for (let id in drawings)
if (isClientAtDrawing(client, drawings[id], part))
state['selectedDrawing' + part] = id;
}
// IF AT OR BELOW DRAWING HEIGHT, START A NEW STROKE
else {
let id = 1;
for ( ; id < 100 && drawings[id] ; id++)
;
drawings[id] = { ids: {}, strokes: [[]] };
state['drawing' + part] = id;
}
}
let drawingDrag = (client, part, x, y) => {
let state = clientState[client];
// DRAG SELECTED DRAWING
if (state['selectedDrawing' + part]) {
let id = state['selectedDrawing' + part];
let strokes = drawings[id].strokes;
for (let i = 0 ; i < strokes.length ; i++) {
let stroke = strokes[i];
for (let k = 0 ; k < stroke.length ; k += 2) {
stroke[k ] += x - state[part].x;
stroke[k+1] += y - state[part].y;
}
}
}
// OR APPEND TO A STROKE
else if (state['drawing' + part]) {
let id = state['drawing' + part];
let strokes = drawings[id].strokes;
let stroke = strokes[strokes.length - 1];
stroke.push(x, y);
}
}
let drawingRelease = (client, part) => {
let state = clientState[client];
if (! state)
return;
delete state['selectedDrawing' + part];
if (! state['drawing' + part])
return;
let sid = state['drawing' + part];
delete state['drawing' + part];
let stroke = drawings[sid].strokes[0];
// IF THE STROKE IS TOO SHORT, DELETE IT
if (stroke.length < 40) {
delete drawings[sid];
return;
}
// IF THE STROKE HAS A VERY LONG GAP, DELETE IT
for (let i = 0 ; i < stroke.length - 2 ; i += 2) {
let dx = stroke[i+2] - stroke[i],
dy = stroke[i+3] - stroke[i+1];
if (dx * dx + dy * dy > 100 * 100) {
delete drawings[sid];
return;
}
}
// IF THE STROKE INTERSECTS AN EXISTING DRAWING, MERGE IT INTO THAT DRAWING
if (drawings[sid].strokes.length == 1)
for (let id in drawings)
if (id != sid)
for (let i = 0 ; i < stroke.length ; i += 2)
if (isPointOnDrawing({ x: stroke[i], y: stroke[i+1] }, drawings[id])) {
drawings[id].strokes.push(stroke);
delete drawings[sid];
return;
}
}
// TURN A DRAWING ABOUT ITS CENTER
let drawingTurn = (id, angle) => {
// COMPUTE CENTER POINT
let cx = 0, cy = 0, count = 0;
for (let i = 0 ; i < drawings[id].strokes.length ; i++) {
let stroke = drawings[id].strokes[i];
for (let j = 0 ; j < stroke.length ; j++)
stroke[j] = stroke[j] + .5 >> 0;
for (let j = 0 ; j < stroke.length ; j += 2) {
cx += stroke[j ];
cy += stroke[j+1];
count++;
}
}
cx /= count;
cy /= count;
// ROTATE ALL STROKES ABOUT THE CENTER OF THE DRAWING
let C = Math.cos(angle * Math.PI / 180);
let S = Math.sin(angle * Math.PI / 180);
for (let i = 0 ; i < drawings[id].strokes.length ; i++) {
let stroke = drawings[id].strokes[i];
for (let j = 0 ; j < stroke.length ; j += 2) {
let x = stroke[j ] - cx;
let y = stroke[j+1] - cy;
stroke[j ] = cx + C * x - S * y;
stroke[j+1] = cy + S * x + C * y;
}
}
}
// DRAW ONE ANIMATION FRAME
let previous_textbox_value = '';
let time_of_last_textbox_change = -1;
let text_buffer = '';
const onFrame = () => {
let time = Date.now() / 1000;
if (textbox.value != previous_textbox_value) {
let L0 = previous_textbox_value.length;
let L1 = textbox.value.length;
text_buffer += textbox.value.substring(L0, L1);
previous_textbox_value = textbox.value.substring(0,L1);
time_of_last_textbox_change = time;
}
if (time - time_of_last_textbox_change > 1) {
//window.speech = text_buffer;
text_buffer = '';
}
if (isAnimating) {
if (animateTime > 0)
animateT += (time - animateTime) / 3;
animateTime = time;
evalAnimation();
}
if (peer.open) {
window['peers'].wizardId = peer.id;
window['peers'].clientIds = Object.keys(clientConnections);
} else {
delete window['peers']['wizardId'];
delete window['peers']['clientIds'];
}
server.broadcastGlobal('peers');
if (window.clientID !== undefined && clientState[clientID] === undefined)
clientState[clientID] = {};
// KEEP TRACK OF WHO SPOKE MOST RECENTLY
for (let client in clientState)
if (clientState[client].isSpeaking)
speakingClient = client;
// RESPOND TO ANY TYPED OR DICTATED TEXT IF THE WIZARD TYPES "ENTER" OR IF THE CURSOR IS OVER THE TABLE
// OR IF ANY CLIENT IS LOOKING AT THE TABLE OR IF AN OBJECT IS SELECTED
// if(speakingClient && !addTrackObj) {
// console.log("i am here")
// for (let i = 0; i < Object.keys(typeToId).length; i++) {
// console.log("my type", Object.keys(typeToId)[i])
// addObject(Object.keys(typeToId)[i], speakingClient);
// }
// addTrackObj = true;