programming-examples/js/Drawing/Draw a diagram with diagonal, white to black circles.js

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2019-11-15 12:59:38 +01:00
function draw()
{
var ctx = document.getElementById("myCanvas").getContext("2d");
var counter = 0;
for (var i=0;i<6;i++)
{
for (var j=0;j<6;j++)
{
//Start from white and goes to black
ctx.fillStyle = "rgb(" + Math.floor(255-42.5*i) + "," + Math.floor(255-42.5*i) +
"," + Math.floor(255-42.5*j) + ")";
ctx.beginPath();
if (i === counter && j === counter)
{
//creates the circles
ctx.arc(25+j*50,30+i*50,20,0,Math.PI*2,true);
ctx.fill();
//creates a border around the circles so white one will be vissible<br>
ctx.stroke();
}
}
counter++;
}
}
draw();