An arrow consists of two points. When clicking over already drawn arrows, points should appear in the middle of all straight lines, which when mouse is clicked, dragged and released again should add this point to the arrow, which is then being redrawn, connecting all points belonging to this arrow
An arrow consists of two points. When clicking over already drawn arrows, points should appear in the middle of all straight lines, which when mouse is clicked, dragged and released again should add this point to the arrow, which is then being redrawn, connecting all points belonging to this arrow