Umbraco Responsive Background Images (Extension Method)

ImageExtensions.cs

using System;
using System.Web;
using Umbraco.Core.Models;
using Umbraco.Web;
using Umbraco.Web.Models;

namespace DotSee.Common
{
    public static class ImageExtensions
    {
        public static ImageData GetImageData(this IPublishedContent image)
        {
            ImageData retVal = new ImageData();

            var m = (ImageCropDataSet)(image.GetPropertyValue("umbracoFile"));
            
            var top = (m!=null && m.FocalPoint != null) ? m.FocalPoint.Top : 0.5m;
            var left = (m!=null && m.FocalPoint != null) ? m.FocalPoint.Left : 0.5m;
            retVal.Top = decimal.Round(top * 100, 2, MidpointRounding.AwayFromZero);
            retVal.Left = decimal.Round(left * 100, 2, MidpointRounding.AwayFromZero);

            retVal.StyleUid = Guid.NewGuid().ToString();

            retVal.Image = image;

            return (retVal);
        }
    }
}