Image cropping challenge

[eluser]Colin Williams[/eluser]
1.) Use ratio to calculate proper dimensions of full photo.
2.) Subtract half of target dimension x from half of orignal image width. This is $config['x_axis']
3.) Subtract half of target dimension y from half of orignal image height. This is $config['y_axis']
4.) Note that one of these should be zero (or both if the image is perfectly rationed already)
5.) Crop the image, using the proper dimensions you calculated in Step 1 and the x_axis and y_axis you calculated in 2 and 3