public IFigure Add(Geometry.Point t)
{
int i;
for (i = Length; i > 0 && !t.IsLighted(Back, Front); i--)
{
PushBack(PopFront);
}
if (i > 0)
{
Geometry.Point x;
Grow(Back, Front, t);
for (x = PopFront; t.IsLighted(x, Front); x = PopFront)
{
Grow(x, Front, t);
}
PushFront(x);
for (x = PopBack; t.IsLighted(Back, x); x = PopBack)
{
Grow(Back, x, t);
}
PushBack(x);
Perimeter += Basics.DistanceBetween(Back, t) + Basics.DistanceBetween(t, Front);
PushFront(t);
}
return(this);
}
public Polygon(Geometry.Point a, Geometry.Point b, Geometry.Point c)
{
PushFront(b);
if (b.IsLighted(a, c))
{
PushFront(a);
PushBack(c);
}
else
{
PushFront(c);
PushBack(a);
}
Perimeter = Basics.DistanceBetween(a, b) + Basics.DistanceBetween(b, c) + Basics.DistanceBetween(c, a);
Area = Math.Abs(Basics.Area(a, b, c));
}