//Определение новых размеров прямоугольника
private Rect GetNewSize(Shape currentFigure, Point currentMousePosition)
{
Rect rect = GraphicElements.GetPosition(currentFigure);
double new_x = rect.X;
double new_y = rect.Y;
double new_width = rect.Width;
double new_height = rect.Height;
double offset_x = currentMousePosition.X - mousePosition.X;
double offset_y = currentMousePosition.Y - mousePosition.Y;
switch (hitType)
{
case HitType.UpperLeft:
new_x += offset_x;
new_y += offset_y;
new_width -= offset_x;
new_height -= offset_y;
break;
case HitType.UpperRight:
new_y += offset_y;
new_width += offset_x;
new_height -= offset_y;
break;
case HitType.LowerRight:
new_width += offset_x;
new_height += offset_y;
break;
case HitType.LowerLeft:
new_x += offset_x;
new_width -= offset_x;
new_height += offset_y;
break;
case HitType.Left:
new_x += offset_x;
new_width -= offset_x;
break;
case HitType.Right:
new_width += offset_x;
break;
case HitType.Bottom:
new_height += offset_y;
break;
case HitType.Top:
new_y += offset_y;
new_height -= offset_y;
break;
}
return(new Rect(new_x, new_y, new_width, new_height));
}
//Опередление точные координаты границ прямоугольника
private Point[] GetCornersPosition(Shape shape)
{
Point [] corners = new Point[4];
double angle = GraphicElements.GetRotationAngle(shape);
Rect rect = GraphicElements.GetPosition(shape);
Point Center = GraphicElements.GetCenter(rect);
//Определяем координаты углов прямоугольника без учёта угла поворота
Point LeftTop = new(rect.X, rect.Y);
Point LeftBottom = new(rect.X, rect.Y + rect.Height);
Point RightTop = new(rect.X + rect.Width, LeftTop.Y);
Point RightBottom = new(rect.X + rect.Width, LeftTop.Y + rect.Height);
RotateTransform rotateTransform = new(angle, Center.X, Center.Y);
//Определяем координаты углов прямоугольника с учётом угла поворота
corners[0] = rotateTransform.Transform(LeftTop);
corners[1] = rotateTransform.Transform(LeftBottom);
corners[2] = rotateTransform.Transform(RightTop);
corners[3] = rotateTransform.Transform(RightBottom);
return(corners);
}