public Box(Point center)
: base(Physics.Material.Wood, new Point(0, 0), false, null)
{
type = random.Next(0, 3);
Point v = new Point(Size / 2, Size / 2);
var points = new[]
{
center + v, center + v.RotateAroundOrigin(Math.PI / 2),
center - v, center - v.RotateAroundOrigin(Math.PI / 2)
};
Shape = new ConvexPolygon(points);
}
public IceWall(Point center, double width, double height)
: base(Physics.Material.Ice, new Point(0, 0), true, null)
{
this.width = width;
this.height = height;
Point v = new Point(width / 2, height / 2);
var points = new[]
{
center + v, center + v.RotateAroundOrigin(Math.PI / 2),
center - v, center - v.RotateAroundOrigin(Math.PI / 2)
};
Shape = new ConvexPolygon(points);
}
public Ground(Point center, double width, double height)
: base(Physics.Material.Grass, new Point(0, 0), true, null)
{
type = random.Next(3);
this.width = width;
this.height = height;
var v = new Point(width / 2, height / 2);
var points = new[]
{
center + v, center + v.RotateAroundOrigin(Math.PI / 2),
center - v, center - v.RotateAroundOrigin(Math.PI / 2)
};
Shape = new ConvexPolygon(points);
}
public Segment RotateAroundOrigin(double angle)
{
return(new Segment(A.RotateAroundOrigin(angle),
B.RotateAroundOrigin(angle)));
}
public Point RotateAroundPoint(Point center, double angle)
{
Point v = this - center;
return(center + v.RotateAroundOrigin(angle));
}
public Line RotateAroundOrigin(double angle)
{
return(new Line(A.RotateAroundOrigin(angle),
B.RotateAroundOrigin(angle)));
}
