Wednesday, September 19, 2012

Heart Demonstration




<!DOCTYPE HTML>
<html>
<head>
<script>
window.onload = function() {
var canvas = document.getElementById("myCanvas");
var context = canvas.getContext("2d");

////////////////////////////////////// start below this line ˇˇˇˇˇˇˇˇˇˇ

var controlX1 = 300;
var controlY1 = 0;
var controlX2 = 100;
var controlY2 = 200;
var endX = 250;
var endY = 325;

var controlX3 = 380;
var controlY3 = 400;
var endX2 = 400;
var endY2 = 500;

var controlX4 = 435;
var controlY4 = 400;
var endX3 = 550;
var endY3 = 325;

var controlX5 = 700;
var controlY5 = 200;
var controlX6 = 500;
var controlY6 = 0;
var endX4 = 400;
var endY4 = 200;


//rectangle
context.beginPath();
context.rect(0, 0, canvas.width, canvas.height);
context.fillStyle = 'red';
context.fill();
context.stroke();


//heart
context.beginPath();
context.moveTo(400,200);
context.bezierCurveTo(controlX1, controlY1, controlX2, controlY2, endX, endY);
context.quadraticCurveTo(controlX3, controlY3, endX2, endY2);
context.quadraticCurveTo(controlX4, controlY4, endX3, endY3);
context.bezierCurveTo(controlX5, controlY5, controlX6, controlY6, endX4, endY4);
context.fillStyle = 'rgb(255, 200, 0)';
context.fill();
context.lineWidth = 10;

////////////////////////////////////// end above this line ˆˆˆˆˆˆˆˆˆˆˆˆˆˆˆ

};

</script>
</head>
<body>
<canvas id="myCanvas" width="800" height="600"></canvas>
</body>
</html>

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