Rotate and save image using Appcelerator Titanium

gistfile1.txt

/*
https://www.snip2code.com/Snippet/78042/Rotate-and-save-image-using-Appcelerator

Hi, I have tested this issue in Ti SDK 3.3.0.RC. Its working good. 
 
 
Testing Environment:
 
    Titanium SDK: 3.3.0.RC, 3.2.3.GA
    Titanium CLI: 3.3.0-rc
    Android Version 4.4.3 KitKat
    iOS Version 7.1
    Appcelerator Studio, build: 3.3.0.201406271159
 
Step to Reproduce
 
    Create a sample Ti Classic project from AppC Studio
    Update app.js file with test code
    Run on Android device and iOS Simulator
    Rotate and save image is working.
 
*/

Ti.UI.setBackgroundColor('#000');
 
var win1 = Ti.UI.createWindow({  
    backgroundColor: '#fff',
});
 
var angle = {
    size: 224,
    old: 0,
    diff: 0,
    adj: 0,
    get: function (center, p1) {
        var p0 = {x: center.x, y: center.y - Math.sqrt(Math.abs(p1.x - center.x) * Math.abs(p1.x - center.x)
                + Math.abs(p1.y - center.y) * Math.abs(p1.y - center.y))};
        return (2 * Math.atan2(p1.y - p0.y, p1.x - p0.x)) * 180 / Math.PI;
    }
};
 
var img = Ti.UI.createImageView({
    height: angle.size,
    image: '1.jpg',
    width: angle.size
});
win1.add(img);
var view = Ti.UI.createImageView({
    //backgroundColor: '#99000000',
  	image: '1.jpg',
    height: angle.size,
    width: angle.size
});
win1.add(view);
 
view.addEventListener('touchstart', function (e) {
    var point = { x: e.x - (angle.size / 2), y: e.y - (angle.size / 2) };
    var newAngle = Math.floor(angle.get({ x: 0, y: 0 }, point));
    angle.diff = (newAngle - angle.old);
});
view.addEventListener('touchmove', function (e) {
    var point = { x: e.x - (angle.size / 2), y: e.y - (angle.size / 2) };
    var newAngle = Math.floor(angle.get({ x: 0, y: 0 }, point));
    angle.adj = Math.abs((newAngle - angle.diff) % 360);
 
    var _transform = Ti.UI.create2DMatrix().rotate(angle.adj);
    img.transform = _transform;
});
view.addEventListener('touchend', function (e) {
    angle.old = angle.adj;
});
 
win1.open();