Get new crop coordinates after rotation - image-processing

Question

I have a site where one of the features lets users rotate/crop images. I'm using the following tools:
- Aspose for rotation
- Jcrop
before rotation to 90 or -90 the crop coordinates are correct but after rotation those coordinates are no longer.
I have tried to change the coordinates as follow :
newX -> croppingCoordinates.w - croppingCoordinates.y - 1
newY -> croppingCoordinates.x
Note that croppingCoordinates is the jcrop coordinate resulting from "onChange" jcrop event.
Any idea where the calculation are wrong ?!!
Thank you in advanced

Answer 1

I found i turn around that works for me, maybe it will help someone else.
it's simply by adding trueSize Jcrop property when attaching the Jcrop method to the div. So when i have a rotated image by 90 degree i simply set width = height and vice verse. like the following code snippet:
if (rotationDegree == 90 || rotationDegree == -90 ){
w = $('#myDiv').height();
h = $('#myDiv').width();
jQuery(function ($) {
$('#myDiv').Jcrop({
onChange: showCoords,
keySupport: false,
trueSize: [w, h]
}, function () {
jcrop_api = this;
});
});
}