//Поворот фигуры вокруг точки
public static Figure RotationPoint(Figure f, CustomPoint p, int angle)
{
double x = Figure.ToRadian(angle);
if (f.points.Count != 2)
{
throw new Exception("This is not line");
}
CustomPoint p1 = f.points[0];
CustomPoint p2 = f.points[1];
Figure res = new Figure();
CustomPoint tmp = p;
p1 = CustomPoint.Displacement(p1, (int)((-1) * tmp.x), (int)((-1) * tmp.y));
p2 = CustomPoint.Displacement(p2, (int)((-1) * tmp.x), (int)((-1) * tmp.y));
p1 = CustomPoint.Rotation(p1, x);
p2 = CustomPoint.Rotation(p2, x);
p1 = CustomPoint.Displacement(p1, (int)tmp.x, (int)tmp.y);
p2 = CustomPoint.Displacement(p2, (int)tmp.x, (int)tmp.y);
res.Add(p1);
res.Add(p2);
return(res);
}
//Параллельное смещение фигуры
public static Figure Displacement(Figure f, int x, int y)
{
Figure res = new Figure();
for (int i = 0; i < f.points.Count; i++)
{
res.Add(CustomPoint.Displacement(f.points[i], x, y));
}
return(res);
}