// ========================================
// method
// ========================================
public override void Relocate(IFigure hostFigure)
{
_figure.Size = _figureSize;
var middle = PointUtil.MiddlePoint(
_request.PrevEdgePointRef.EdgePoint,
_request.PrevEdgePointRef.Next.EdgePoint
);
_figure.Location = new Point(
middle.X - _figureSize.Width / 2,
middle.Y - _figureSize.Height / 2
);
}
/// <summary>
/// srcLocが原点で右方向に線が出ているように平行移動，回転して折れ点を計算．
/// </summary>
private Point[] FacedDirection(
Point srcLoc, Point tgtLoc,
Point srcTopLeft, Point srcBottomRight, Point tgtTopLeft, Point tgtBottomRight,
Single angle
)
{
var delta = new Size(-srcLoc.X, -srcLoc.Y);
/// srcLocが原点になるように平行移動してから回転
var trTgtLoc = ForwardTransform(tgtLoc, delta, angle);
var trSrcTopLeft = ForwardTransform(srcTopLeft, delta, angle);
var trSrcBottomRight = ForwardTransform(srcBottomRight, delta, angle);
var trTgtTopLeft = ForwardTransform(tgtTopLeft, delta, angle);
var trTgtBottomRight = ForwardTransform(tgtBottomRight, delta, angle);
/// 平行移動・回転後のSourceとTargetのBoundsの各値
var trSrcLeft = trSrcTopLeft.X;
var trSrcTop = trSrcTopLeft.Y;
var trSrcRight = trSrcBottomRight.X;
var trSrcBottom = trSrcBottomRight.Y;
var trTgtLeft = trTgtTopLeft.X;
var trTgtTop = trTgtTopLeft.Y;
var trTgtRight = trTgtBottomRight.X;
var trTgtBottom = trTgtBottomRight.Y;
var midLoc = PointUtil.MiddlePoint(Point.Empty, trTgtLoc);
var ret = default(Point[]);
if (trTgtLoc.X >= DefaultLength)
{
/// 両方connectedでなければ必ずこの条件
ret = new [] {
new Point(midLoc.X, 0),
new Point(midLoc.X, trTgtLoc.Y),
};
}
else
{
var y = default(int);
if (trTgtTop > trSrcBottom)
{
y = (trTgtTop + trSrcBottom) / 2;
}
else if (trTgtBottom < trSrcTop)
{
y = (trSrcTop + trTgtBottom) / 2;
}
else
{
var top = Math.Min(trSrcTop, trTgtTop);
var btm = Math.Max(trSrcBottom, trTgtBottom);
/// 原点(元srcLoc)とtopの距離 + trTgtLocとtopの距離
var distanceToTop = Math.Abs(0 - top) + Math.Abs(trTgtLoc.Y - top);
/// 原点(元srcLoc)とbtmの距離 + trTgtLocとbtmの距離
var distanceToBtm = Math.Abs(btm - 0) + Math.Abs(btm - trTgtLoc.Y);
if (distanceToTop < distanceToBtm)
{
y = top - DefaultLength;
}
else
{
y = btm + DefaultLength;
}
}
ret = new[] {
new Point(DefaultLength, 0),
new Point(DefaultLength, y),
new Point(trTgtLoc.X - DefaultLength, y),
new Point(trTgtLoc.X - DefaultLength, trTgtLoc.Y),
};
}
for (int i = 0, len = ret.Length; i < len; ++i)
{
ret[i] = ReverseTransform(ret[i], -angle, (Size)srcLoc);
}
return(ret);
}