Assessment2021 09Hard

Three Checks

• 316 by 308

Three Checks

function drawFlag(ctx)
{
}  

function drawFlag(ctx)
{
  function banner(x,y,cc1,cc2,n,sc1,sc2){
    ctx.translate(x,y);
    let sqw = 100/n;
    for(let i=0;i<n;i++){
      for(let j=0;j<n;j++){
        ctx.translate(i*sqw,j*sqw);
        if ((i+j)%2===0){
          ctx.fillStyle = cc1;
        }else{
          ctx.fillStyle = cc2;
        }
        ctx.fillRect(0,0,sqw,sqw);
        ctx.translate(-i*sqw,-j*sqw);
      }
    }
    ctx.beginPath();
    ctx.moveTo(0,100);
    ctx.lineTo(50,100);
    ctx.lineTo(50,250);
    ctx.lineTo(0,300);
    ctx.fillStyle=sc1;
    ctx.fill();

    ctx.beginPath();
    ctx.moveTo(100,100);
    ctx.lineTo(50,100);
    ctx.lineTo(50,250);
    ctx.lineTo(100,300);
    ctx.fillStyle=sc2;
    ctx.fill();
ctx.translate(-x,-y);
  }
  banner(4,4,'red','yellow',2,"red","white");
  banner(108,4,'blue','yellow',4,"white","blue");
  banner(212,4,'red','white',5,"white","red");
}  

<htmltag tagname="video" src="videos/Three-Checks.mp4" width="400px" controls ></htmltag>

Circles

• 300 by 300

function drawFlag(ctx)
{
}  

function drawFlag(ctx)
{
  let reddish = 'rgb(201,100,104)';
  ctx.fillStyle = reddish;
  ctx.fillRect(0,0,300,300);
  let dd = 40;
  let dx = -dd;
  for(let j =0;j<16;j++){
    for(let i=0;i<9;i++){
      ctx.beginPath();
      ctx.strokeStyle = 'white';
      ctx.arc(i*dd,0,4,0,2*Math.PI);
      ctx.stroke();
      ctx.beginPath();
      ctx.fillStyle = 'white';
      ctx.arc(i*dd+dd/2,0,13,0,2*Math.PI);
      ctx.fill();
      ctx.beginPath();
      ctx.lineWidth = 2;
      ctx.strokeStyle = reddish;
      ctx.arc(i*dd+dd/2,0,6,0,2*Math.PI);
      ctx.stroke();
      ctx.beginPath();
      ctx.lineWidth = 1;
      ctx.strokeStyle = reddish;
      ctx.arc(i*dd+dd/2,0,10,0,2*Math.PI);
      ctx.stroke();
    }
    ctx.translate(dx/2,dd/2);
    dx = -dx;
  }
}  

• Draw a single row of circles

<htmltag tagname="video" src="videos/circles-1.mp4" width="400px" controls ></htmltag>

• Alternate rows of circles

<htmltag tagname="video" src="videos/circles-2.mp4" width="400px" controls ></htmltag>

TOTP 1

Size is 100 by 300

function drawFlag(ctx)
{
}  

<htmltag tagname="video" src="videos/totp1.mp4" width="400px" controls ></htmltag>

TOTP 2

• 260 by 200

function drawFlag(ctx)
{
}  

function drawFlag(ctx)
{
  function q(r,b,y){
    ctx.translate(65,50);
    for(let o=0;o<2;o++){
      ctx.beginPath();
      let rw = 86;
      let rh = 28;
      let g = 6;
      let wh = 20;
      let yw = 10;
      let yh = rh*2+2*g+wh - yw*2;
      ctx.fillStyle = 'white';
      ctx.fillRect(g/2,-wh/2,rw/2-g/2,wh);
      ctx.fill();
      //Yellow !
      ctx.beginPath();
      ctx.fillStyle = y;
      ctx.fillRect(g/2+rw/2-g/2+g,-(wh/2+g+rh),yw,yh);
      ctx.beginPath();
      ctx.arc(rw/2+g+yw/2, wh/2+g+rh - yw, yw/2,0,2*Math.PI);
      ctx.fill();

      ctx.fillStyle = r;
      ctx.fillRect(-rw/2,-(g+wh/2+rh),rw,rh);
      
      ctx.beginPath();
      ctx.fillStyle='black';
      let cy = -rh/2-wh/2-g;
      ctx.arc(0,cy,rh/3,0,2*Math.PI);
      ctx.fill();
      ctx.beginPath();
      ctx.fillStyle=b;
      ctx.arc(0,cy,rh/6,0,2*Math.PI);
      ctx.fill();
      [r,b] = [b,r];
      ctx.rotate(Math.PI);
    }
    ctx.translate(-65,-50);
  }
  ctx.fillStyle= 'black';
  ctx.fillRect(0,0,260,200);
  let reddish = 'rgb(253,128,0)';
  let blueish = 'rgb(11,95,255)';
  q(reddish,blueish,'yellow');
  ctx.translate(130,0);
  q('yellow',blueish,reddish);
  ctx.translate(0,100);
  q(reddish,'yellow',blueish);
  ctx.translate(-130,0);
  q(blueish,reddish,'yellow');
}  

<htmltag tagname="video" src="videos/totp2-1.mp4" width="400px" controls ></htmltag> <htmltag tagname="video" src="videos/totp2-2.mp4" width="400px" controls ></htmltag>