public override void OnPointerMoved(DesignCanvas canvas, PointerRoutedEventArgs args)
{
base.OnPointerMoved(canvas, args);
if (_origin.HasValue)
{
var pos = canvas.FromClientPosition(args.GetCurrentPoint(canvas).Position);
if (args.KeyModifiers.HasFlag(VirtualKeyModifiers.Shift))
{
pos = ClampToOrigin(pos, _origin.Value);
}
if (_shouldMoveOrigin)
{
_origin = new Point(
_origin.Value.X + pos.X - _anchor.X,
_origin.Value.Y + pos.Y - _anchor.Y);
}
_anchor = pos;
_points = Slicing.IntersectPaths(canvas.Layer, _origin.Value.ToVector2(), _anchor.ToVector2());
canvas.Invalidate();
}
Cursor = args.KeyModifiers.HasFlag(VirtualKeyModifiers.Menu) ? Cursors.KnifeWithPlus : DefaultCursor;
canvas.InvalidateCursor();
}
IList <Vector2> GetPointsWithEndpoints(Data.Layer layer, bool addIntersections = true)
{
var origin = _origin.Value.ToVector2();
var anchor = _anchor.ToVector2();
return(addIntersections switch
{
true => Enumerable.Concat(Slicing.IntersectPaths(layer, origin, anchor), new Vector2[] { origin, anchor })
.OrderBy(point => (point - origin).LengthSquared())
.ToArray(),
false => new Vector2[] { origin, anchor }
});
