Flags with Polygons

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You can dive into the code, or you can watch these worked examples Flags of Russia

Napier

Napier University
function drawFlag(ctx)
{
  ctx.fillStyle = 'white';
  ctx.fillRect(0,0,150,150);
  ctx.fillStyle = 'red';
  ctx.moveTo(0,0);
  ctx.lineTo(150,0);
  ctx.lineTo(150,150);
  ctx.fill();
}
function drawFlag(ctx)
{
  ctx.fillStyle = 'white';
  ctx.fillRect(0,0,150,150);
  ctx.moveTo(0,0);
  ctx.lineTo(150,150);
  ctx.lineTo(0,150);
  ctx.fillStyle = "red";
  ctx.fill();
}

The Czech Republic

  • 300 by 200
  • The point of intersection is the centre of the rectangle
Flag of Czech Republic
function drawFlag(ctx)
{
}
function drawFlag(ctx)
{
  ctx.fillStyle = 'blue';
  ctx.moveTo(0,0);
  ctx.lineTo(150,100);
  ctx.lineTo(0,200);
  ctx.fill();
  ctx.beginPath();
  ctx.fillStyle = 'white';
  ctx.moveTo(0,0);
  ctx.lineTo(150,100);
  ctx.lineTo(300,100);
  ctx.lineTo(300,0);
  ctx.fill();
  ctx.beginPath();
  ctx.fillStyle = 'red';
  ctx.moveTo(0,200);
  ctx.lineTo(150,100);
  ctx.lineTo(300,100);
  ctx.lineTo(300,200);
  ctx.fill();  
}

The Bahamas

Flag Bahamas
function drawFlag(ctx)
{
}
function drawFlag(ctx)
{
  ctx.fillStyle = 'rgb(127,192,255)';
  ctx.fillRect(0,0,300,150);
  ctx.fillStyle = 'rgb(255,255,0)';
  ctx.fillRect(0,50,300,50);
  ctx.fillStyle = 'black';
  ctx.moveTo(0,0);
  ctx.lineTo(112,75);
  ctx.lineTo(0,150);
  ctx.fill();
}

Jamaica

Flag of Jamaica
function drawFlag(ctx)
{
  ctx.fillStyle = 'yellow';
  ctx.fillRect(0,0,300,150);
}
function drawFlag(ctx)
{
  ctx.fillStyle = 'yellow';
  ctx.fillRect(0,0,300,150);
  ctx.fillStyle = 'green';
  ctx.moveTo(30,0);
  ctx.lineTo(150,60);
  ctx.lineTo(270,0);
  ctx.fill();
  ctx.moveTo(30,150);
  ctx.lineTo(150,90);
  ctx.lineTo(270,150);
  ctx.fill();
  ctx.beginPath();
  ctx.fillStyle = 'black';
  ctx.moveTo(0,15);
  ctx.lineTo(120,75);
  ctx.lineTo(0,135);
  ctx.fill();
  ctx.moveTo(300,15);
  ctx.lineTo(180,75);
  ctx.lineTo(300,135);
  ctx.fill();
}

Seychelles

Flag of Seychelles
function drawFlag(ctx)
{
}
function drawFlag(ctx)
{
  ctx.fillStyle = 'blue';
  ctx.moveTo(0,150);
  ctx.lineTo(0,0);
  ctx.lineTo(100,0);
  ctx.fill();
  ctx.beginPath();
  ctx.fillStyle = 'yellow';
  ctx.moveTo(0,150);
  ctx.lineTo(100,0);
  ctx.lineTo(200,0);
  ctx.fill();
  ctx.beginPath();
  ctx.fillStyle = 'red';
  ctx.moveTo(0,150);
  ctx.lineTo(200,0);
  ctx.lineTo(300,0);
  ctx.lineTo(300,50);
  ctx.fill();
  ctx.beginPath();
  ctx.fillStyle = 'white';
  ctx.moveTo(0,150);
  ctx.lineTo(300,50);
  ctx.lineTo(300,100);
  ctx.fill();
  ctx.beginPath();
  ctx.fillStyle = 'green';
  ctx.moveTo(0,150);
  ctx.lineTo(300,150);
  ctx.lineTo(300,100);
  ctx.fill();
}