Blame for ChatBubColorCyc.html

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title></title>
<style>

  html,body{margin:0;padding:0;width:100%;height:100%;background:#FFFFFF;overflow:hidden;}

  canvas{display:block;}

</style>
</head>
<body>
<canvas id="c"></canvas>
<script>

(function(){

"use strict";



var cv = document.getElementById('c');

var ctx = cv.getContext('2d');



var DW = 1600, DH = 900;

var dpr = 1, sc = 1, ox = 0, oy = 0;

var FONT = '"Inter","Helvetica Neue","Segoe UI",Roboto,Helvetica,Arial,sans-serif';



function resize(){

  dpr = Math.min(window.devicePixelRatio || 1, 2);

  cv.width  = Math.max(1, Math.floor(window.innerWidth  * dpr));

  cv.height = Math.max(1, Math.floor(window.innerHeight * dpr));

  cv.style.width  = window.innerWidth + 'px';

  cv.style.height = window.innerHeight + 'px';

  sc = Math.min(cv.width / DW, cv.height / DH);

  ox = (cv.width  - DW * sc) * 0.5;

  oy = (cv.height - DH * sc) * 0.5;

}

window.addEventListener('resize', resize);

resize();



/* ---------- helpers ---------- */

function clamp(v,a,b){ return v<a?a:(v>b?b:v); }

function ss(e0,e1,x){ var t=clamp((x-e0)/(e1-e0),0,1); return t*t*(3-2*t); }

function easeInOut(t){ return t<0.5 ? 4*t*t*t : 1-Math.pow(-2*t+2,3)/2; }

function easeOutBack(t){

  var c1=1.70158, c3=c1+1;

  var u=t-1;

  return 1 + c3*u*u*u + c1*u*u;

}

function fontStr(w,s){ return w+' '+s+'px '+FONT; }

function hx(h){

  return [parseInt(h.slice(1,3),16),parseInt(h.slice(3,5),16),parseInt(h.slice(5,7),16)];

}

function mix(a,b,u){

  var r=Math.round(a[0]+(b[0]-a[0])*u),

      g=Math.round(a[1]+(b[1]-a[1])*u),

      bb=Math.round(a[2]+(b[2]-a[2])*u);

  return 'rgb('+r+','+g+','+bb+')';

}

function rrect(c,x,y,w,h,r){

  r = Math.min(r, w*0.5, h*0.5);

  c.beginPath();

  c.moveTo(x+r,y);

  c.lineTo(x+w-r,y); c.quadraticCurveTo(x+w,y,x+w,y+r);

  c.lineTo(x+w,y+h-r); c.quadraticCurveTo(x+w,y+h,x+w-r,y+h);

  c.lineTo(x+r,y+h); c.quadraticCurveTo(x,y+h,x,y+h-r);

  c.lineTo(x,y+r); c.quadraticCurveTo(x,y,x+r,y);

  c.closePath();

}

function wrap(text,maxW){

  var words = text.split(' '), lines = [], cur = '';

  for(var i=0;i<words.length;i++){

    var test = cur ? (cur+' '+words[i]) : words[i];

    if(ctx.measureText(test).width > maxW && cur){ lines.push(cur); cur = words[i]; }

    else cur = test;

  }

  if(cur) lines.push(cur);

  return lines;

}

function layoutWords(text,maxW){

  var words = text.split(' ');

  var spaceW = ctx.measureText(' ').width;

  var lines = [], cur = [], x = 0;

  for(var i=0;i<words.length;i++){

    var w = ctx.measureText(words[i]).width;

    if(cur.length && x + spaceW + w > maxW){ lines.push(cur); cur = []; x = 0; }

    cur.push({ i:i, word:words[i], x:x });

    x += w + spaceW;

  }

  if(cur.length) lines.push(cur);

  return lines;

}

function fitSize(text,weight,start,maxW){

  var s = start;

  ctx.font = fontStr(weight,s);

  while(ctx.measureText(text).width > maxW && s > 12){ s -= 2; ctx.font = fontStr(weight,s); }

  return s;

}



/* ---------- timeline constants ---------- */

var LOOP = 8.15;

var S1_TYPE = 0.85;

var S1_CUT  = 1.60;

var S2_POP  = 1.70, POP_DUR = 0.42;

var SLIDE_A = 3.85, SLIDE_B = 4.40;

var STREAM_A = 3.95, STREAM_B = 4.80, WORD_RAMP = 0.18;

var ICON_A = 5.00, ICON_DUR = 0.30;

var S3_CUT = 5.45;

var S4_TYPE = 1.05;

var FADE_A = 7.95, FADE_B = 8.12;



/* ---------- content ---------- */

var TITLE1 = "Make it your own";

var TITLE2 = "Expert intelligence for everyone";

var QUESTION = "If I had custom chat bubbles, what color do you think they would be?";

var ANSWER = "A hunter green would suit you best\u2014polished, distinctive, and balancing your analytical side with creativity. If you want a softer, quirkier option, go for muted sage green.";

var AWORDS = ANSWER.split(' ');



var RESP_X = 150, RESP_W = 920, RESP_TOP = 455, RESP_LH = 46;



/* ---------- bubble colour cycle ---------- */

var KEYS = [

  { t:2.15, f:hx('#F2F2F1'), x:hx('#111111'), g:0 },

  { t:2.45, f:hx('#E9E4F8'), x:hx('#6B4FA8'), g:1 },

  { t:2.75, f:hx('#DCEDFB'), x:hx('#1F3D7A'), g:2 },

  { t:3.05, f:hx('#FBDFD0'), x:hx('#A8502A'), g:3 },

  { t:3.35, f:hx('#FADCE9'), x:hx('#B03A78'), g:4 },

  { t:3.65, f:hx('#FDF3D3'), x:hx('#7A7A2E'), g:5 },

  { t:3.95, f:hx('#DBF5DF'), x:hx('#1F6B3A'), g:6 }

];

function bubbleCol(t){

  if(t <= KEYS[0].t){

    return { fill:mix(KEYS[0].f,KEYS[0].f,0), txt:mix(KEYS[0].x,KEYS[0].x,0), g:KEYS[0].g };

  }

  for(var i=0;i<KEYS.length-1;i++){

    if(t < KEYS[i+1].t){

      var u = ss(KEYS[i].t, KEYS[i+1].t, t);

      return {

        fill: mix(KEYS[i].f, KEYS[i+1].f, u),

        txt:  mix(KEYS[i].x, KEYS[i+1].x, u),

        g:    KEYS[i].g + (KEYS[i+1].g - KEYS[i].g) * u

      };

    }

  }

  var L = KEYS[KEYS.length-1];

  return { fill:mix(L.f,L.f,0), txt:mix(L.x,L.x,0), g:L.g };

}



/* ---------- utility icons ---------- */

function iconCopy(){

  rrect(ctx,-8,-2,13,15,3); ctx.stroke();

  ctx.save(); ctx.fillStyle='#FFFFFF'; rrect(ctx,-3,-8,13,15,3); ctx.fill(); ctx.restore();

  rrect(ctx,-3,-8,13,15,3); ctx.stroke();

}

function iconSpeaker(){

  ctx.beginPath();

  ctx.moveTo(-10,-4); ctx.lineTo(-5,-4); ctx.lineTo(1,-9);

  ctx.lineTo(1,9); ctx.lineTo(-5,4); ctx.lineTo(-10,4);

  ctx.closePath(); ctx.stroke();

  ctx.beginPath(); ctx.arc(3,0,5,-0.95,0.95); ctx.stroke();

  ctx.beginPath(); ctx.arc(3,0,9.5,-0.95,0.95); ctx.stroke();

}

function thumbPath(){

  ctx.beginPath();

  ctx.moveTo(-1,12);

  ctx.lineTo(-1,-1);

  ctx.lineTo(2,-4);

  ctx.quadraticCurveTo(6,-9,5,-11.5);

  ctx.quadraticCurveTo(2,-13.5,1,-9.5);

  ctx.lineTo(0,-4);

  ctx.lineTo(8,-4);

  ctx.quadraticCurveTo(12,-4,11,0);

  ctx.lineTo(9,12);

  ctx.closePath();

  ctx.stroke();

}

function iconUp(){ thumbPath(); }

function iconDown(){ ctx.save(); ctx.scale(1,-1); thumbPath(); ctx.restore(); }

function iconRegen(){

  var r=8.5, a0=0.7, a1=5.5;

  ctx.beginPath(); ctx.arc(0,0,r,a0,a1); ctx.stroke();

  var ex=r*Math.cos(a1), ey=r*Math.sin(a1);

  var ang=Math.atan2(-Math.cos(a1), Math.sin(a1)) + Math.PI;

  for(var k=0;k<2;k++){

    var s = (k===0)?0.7:-0.7;

    ctx.beginPath();

    ctx.moveTo(ex+Math.cos(ang+s)*6.5, ey+Math.sin(ang+s)*6.5);

    ctx.lineTo(ex,ey);

    ctx.stroke();

  }

}

function iconShare(){

  ctx.beginPath();

  ctx.moveTo(-8,2); ctx.lineTo(-8,10); ctx.lineTo(8,10); ctx.lineTo(8,2);

  ctx.stroke();

  ctx.beginPath(); ctx.moveTo(0,8); ctx.lineTo(0,-9); ctx.stroke();

  ctx.beginPath(); ctx.moveTo(-5,-4); ctx.lineTo(0,-9); ctx.lineTo(5,-4); ctx.stroke();

}

var ICONS = [iconCopy,iconSpeaker,iconUp,iconDown,iconRegen,iconShare];



/* ---------- scenes ---------- */

function drawTitleTyping(text, typeDur, alpha){

  if(alpha <= 0) return;

  var n = Math.min(text.length, Math.floor(clamp(text.length * (0 + 0), 0, 0)));

  n = Math.min(text.length, Math.floor(clamp(typeDur>0 ? (typeDur) : 0,0,0)));

  return n;

}



function scene1(t){

  if(t >= S1_CUT) return;

  var n = Math.min(TITLE1.length, Math.floor(TITLE1.length * clamp(t / S1_TYPE,0,1)));

  if(n <= 0) return;

  ctx.save();

  ctx.globalAlpha = 1;

  ctx.textAlign = 'center';

  ctx.fillStyle = '#0B0B0B';

  ctx.font = fontStr(700, 80);

  ctx.fillText(TITLE1.slice(0,n), DW/2, DH/2);

  ctx.restore();

}



function scene4(t){

  if(t < S3_CUT) return;

  var alpha = 1 - ss(FADE_A, FADE_B, t);

  if(alpha <= 0) return;

  var n = Math.min(TITLE2.length, Math.floor(TITLE2.length * clamp((t - S3_CUT) / S4_TYPE, 0, 1)));

  if(n <= 0) return;

  var shown = TITLE2.slice(0,n);

  ctx.save();

  ctx.globalAlpha = alpha;

  ctx.textAlign = 'center';

  ctx.fillStyle = '#0B0B0B';

  var size = fitSize(TITLE2, 700, 74, 1300);

  ctx.font = fontStr(700, size);

  ctx.fillText(shown, DW/2, DH/2);

  ctx.restore();

}



function chatScene(t){

  if(t < S2_POP || t >= S3_CUT) return;



  /* --- bubble --- */

  var col = bubbleCol(t);

  ctx.save();

  ctx.textAlign = 'left';

  ctx.font = fontStr(400, 27);

  var lines = wrap(QUESTION, 430);

  var maxL = 0, i, j;

  for(i=0;i<lines.length;i++) maxL = Math.max(maxL, ctx.measureText(lines[i]).width);



  var padX = 36, padY = 32, lh = 36;

  var bw = maxL + padX*2;

  var bh = lines.length*lh + padY*2;

  var right = 1470;

  var slide = easeInOut(clamp((t - SLIDE_A) / (SLIDE_B - SLIDE_A), 0, 1));

  var top = 300 - 140 * slide;

  var cx = right - bw/2, cy = top + bh/2;



  var pop = clamp((t - S2_POP)/POP_DUR, 0, 1);

  var popS = easeOutBack(pop);

  if(popS > 0){

    var s = popS * (1 + 0.010 * col.g);

    ctx.translate(cx, cy); ctx.scale(s, s); ctx.translate(-cx, -cy);



    ctx.fillStyle = col.fill;

    rrect(ctx, right - bw, top, bw, bh, 30);

    ctx.fill();



    ctx.fillStyle = col.txt;

    ctx.font = fontStr(400, 27);

    ctx.textAlign = 'left';

    for(i=0;i<lines.length;i++){

      ctx.fillText(lines[i], right - bw + padX, top + padY + lh/2 + i*lh);

    }

  }

  ctx.restore();



  /* --- streamed response --- */

  ctx.save();

  ctx.textAlign = 'left';

  ctx.fillStyle = '#3B3B3B';

  ctx.font = fontStr(400, 30);

  var blocks = layoutWords(ANSWER, RESP_W);

  for(i=0;i<blocks.length;i++){

    var line = blocks[i];

    for(j=0;j<line.length;j++){

      var w = line[j];

      var appear = STREAM_A + (w.i / Math.max(1,(AWORDS.length-1))) * (STREAM_B - STREAM_A);

      var a = clamp((t - appear) / WORD_RAMP, 0, 1);

      if(a <= 0) continue;

      ctx.globalAlpha = a;

      ctx.fillText(w.word, RESP_X + w.x, RESP_TOP + i*RESP_LH);

    }

  }

  ctx.globalAlpha = 1;



  /* --- icon row --- */

  var ia = clamp((t - ICON_A) / ICON_DUR, 0, 1);

  if(ia > 0){

    var ease = 1 - Math.pow(1 - ia, 3);

    var iy = RESP_TOP + blocks.length*RESP_LH + 40 + (1 - ease)*8;

    ctx.save();

    ctx.lineWidth = 2;

    ctx.strokeStyle = '#8E8E8E';

    ctx.lineJoin = 'round';

    ctx.lineCap = 'round';

    for(i=0;i<ICONS.length;i++){

      ctx.save();

      ctx.globalAlpha = ease;

      ctx.translate(RESP_X + 14 + i*56, iy);

      ICONS[i]();

      ctx.restore();

    }

    ctx.restore();

  }

  ctx.restore();

}



/* ---------- main loop ---------- */

var t0 = performance.now();



function draw(t){

  ctx.setTransform(1,0,0,1,0,0);

  ctx.fillStyle = '#FFFFFF';

  ctx.fillRect(0,0,cv.width,cv.height);

  ctx.setTransform(sc,0,0,sc,ox,oy);



  ctx.textBaseline = 'middle';

  ctx.textAlign = 'left';

  ctx.lineJoin = 'round';

  ctx.lineCap = 'round';



  scene1(t);

  chatScene(t);

  scene4(t);

}



function frame(now){

  var t = ((now - t0) / 1000) % LOOP;

  if(t < 0) t += LOOP;

  draw(t);

  requestAnimationFrame(frame);

}

requestAnimationFrame(frame);



})();

</script>
</body>
</html>