How to keep the ratio when crop

[cnzlh]

I want to keep 16:9 ratio when I cut the picture.

[myang-git]

you can look into the handleDrag* methods. add the constraints to keep the aspect ratio.

[CodeForTeam]

You can do it in deriveDisplacementFromDragLocation method..

• (CGSize)deriveDisplacementFromDragLocation:(CGPoint)dragLocation draggedPoint:(CGPoint)draggedPoint oppositePoint:(CGPoint)oppositePoint {}

//Replacing displacement value as example if you drag from bottomRight
CGSize displacement = CGSizeMake(newX - draggedPoint.x, (newX - draggedPoint.x)/16 *9);

And I imagine you can apply same kind of value for their respective corners

[bhavinmdesai]

@CodeForTeam I made following change but doesn't seems to be working:

CGSize displacement = CGSizeMake(newX - draggedPoint.x, (newX - draggedPoint.x)/16 *9);