Setting crop gravity with focal point coordinates
Allows to crop an image by defining the coordinates of the crop focal point. It is useful when you want to crop images where the coordinates of the point of interest are already known.
To set the coordinates of the focal point, use the gravity=X,Y operation where X and Y are the coordinates of the focal point (in pixels). Alternatively, you can set the coordinates as a percentage of the original image - gravity=Xp,Yp or gravity=xc,yc, where X,Y=0..100 and x,y=0..1.
gravity=X,Y
gravity=Xp,Yp|xc,yc
Original image: /docs/castle.jpg?w=1000
Please note that the focal point in gravity=X,Y has to be defined as coordinates X and Y of the full-sized origin image and not the scaled-down version.
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