You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
42 lines
777 B
42 lines
777 B
13 years ago
|
|
||
|
|
/**
|
||
|
|
* Module dependencies.
|
||
|
|
*/
|
||
|
|
|
||
|
|
var Canvas = require('../lib/canvas')
|
||
|
|
, Image = Canvas.Image
|
||
|
|
, fs = require('fs');
|
||
|
|
|
||
|
|
var img = new Image
|
||
|
|
, start = new Date;
|
||
|
|
|
||
|
|
img.onerror = function(err){
|
||
|
|
throw err;
|
||
|
|
};
|
||
|
|
|
||
|
|
img.onload = function(){
|
||
|
|
var w = img.width / 2
|
||
|
|
, h = img.height / 2
|
||
|
|
, canvas = new Canvas(w, h)
|
||
|
|
, ctx = canvas.getContext('2d');
|
||
|
|
ctx.drawImage(img, 0, 0, w, h, 0, 0, w, h);
|
||
|
|
|
||
|
|
var out = fs.createWriteStream(__dirname + '/crop.jpg')
|
||
|
|
, stream = canvas.createJPEGStream({
|
||
|
|
bufsize : 2048,
|
||
|
|
quality : 80
|
||
|
|
});
|
||
|
|
|
||
|
|
stream.on('data', function(chunk, len){
|
||
|
|
out.write(chunk);
|
||
|
|
});
|
||
|
|
|
||
|
|
stream.on('end', function(){
|
||
|
|
console.log('Cropped and saved in %dms', new Date - start);
|
||
|
|
});
|
||
|
|
};
|
||
|
|
|
||
|
|
img.src = __dirname + '/images/squid.png';
|
||
|
|
|
||
|
|
|