Does a line contain a point

Question

I want the user to be able to drag the edges of a square around the canvas. With my current solution it works but has glitches, sometimes an edge cannot be selected. Is ther

Answer 1

You could define 8 Rect to check against - the 4 sides and 4 corners (so you can move 2 edges at once). The lines of the edge should have a width for the touchable area.

Define a Point centred on your touch event, there are then methods for checking if a rect contains a point.