/**
 * Module dependencies.
 */

var Canvas = require('../lib/canvas')
  , canvas = new Canvas(150, 150)
  , ctx = canvas.getContext('2d')
  , fs = require('fs');

ctx.fillStyle = '#FD0';
ctx.fillRect(0,0,75,75);
ctx.fillStyle = '#6C0';
ctx.fillRect(75,0,75,75);
ctx.fillStyle = '#09F)';
ctx.fillRect(0,75,75,75);
ctx.fillStyle = '#F30';
ctx.fillRect(75,75,150,150);
ctx.fillStyle = '#FFF';

// set transparency value
ctx.globalAlpha = 0.2;

// Draw semi transparent circles
for (i=0;i<7;i++){
    ctx.beginPath();
    ctx.arc(75,75,10+10*i,0,Math.PI*2,true);
    ctx.fill();
}

var out = fs.createWriteStream(__dirname + '/globalAlpha.png')
  , stream = canvas.createPNGStream();

stream.on('data', function(chunk){
  out.write(chunk);
});