static public void SplitByX(this RectI2 item, int x, out RectI2 left, out RectI2 right)
{
int split = x.Min(item.GetRight());
left = RectI2Extensions.CreateStrictMinMaxRectI2(item.min, item.max.GetWithX(split));
right = RectI2Extensions.CreateStrictMinMaxRectI2(item.min.GetWithX(split), item.max);
}
static public void SplitByY(this RectI2 item, int y, out RectI2 bottom, out RectI2 top)
{
int split = y.Min(item.GetTop());
bottom = RectI2Extensions.CreateStrictMinMaxRectI2(item.min, item.max.GetWithY(split));
top = RectI2Extensions.CreateStrictMinMaxRectI2(item.min.GetWithY(split), item.max);
}
static public RectI2 GetRectI2(this RectF2 item)
{
return(RectI2Extensions.CreateLowerLeftRectI2(
item.GetLowerLeftPoint().GetVectorI2(),
item.GetSize().GetVectorI2()
));
}
static public RectI2 GetLeftSlice(this RectI2 item, int amount)
{
return(RectI2Extensions.CreateStrictMinMaxRectI2(
item.GetLeft(),
item.GetBottom(),
(item.GetLeft() + amount).BindBelow(item.GetRight()),
item.GetTop()
));
}
static public RectI2 GetEncompassing(this RectI2 item, RectI2 rect)
{
return(RectI2Extensions.CreateStrictMinMaxRectI2(
item.GetLeft().Min(rect.GetLeft()),
item.GetBottom().Min(rect.GetBottom()),
item.GetRight().Max(rect.GetRight()),
item.GetTop().Max(rect.GetTop())
));
}
static public bool TryGetIntersection(this RectI2 item, RectI2 rect, out RectI2 intersection)
{
return(RectI2Extensions.TryCreateStrictMinMaxRectI2(
item.GetLeft().Max(rect.GetLeft()),
item.GetBottom().Max(rect.GetBottom()),
item.GetRight().Min(rect.GetRight()),
item.GetTop().Min(rect.GetTop()),
out intersection
));
}
static public IEnumerable <RectI2> GetSubtraction(this RectI2 item, RectI2 to_subtract)
{
if (item.TryGetIntersection(to_subtract, out to_subtract) == false)
{
yield return(item);
}
else
{
RectI2 left;
if (RectI2Extensions.TryCreateStrictMinMaxRectI2(
item.GetLeft(), to_subtract.GetBottom(),
to_subtract.GetLeft(), to_subtract.GetTop(),
out left
))
{
yield return(left);
}
RectI2 right;
if (RectI2Extensions.TryCreateStrictMinMaxRectI2(
to_subtract.GetRight(), to_subtract.GetBottom(),
item.GetRight(), to_subtract.GetTop(),
out right
))
{
yield return(right);
}
RectI2 bottom;
if (RectI2Extensions.TryCreateStrictMinMaxRectI2(
item.GetLeft(), item.GetBottom(),
item.GetRight(), to_subtract.GetBottom(),
out bottom
))
{
yield return(bottom);
}
RectI2 top;
if (RectI2Extensions.TryCreateStrictMinMaxRectI2(
item.GetLeft(), to_subtract.GetTop(),
item.GetRight(), item.GetTop(),
out top
))
{
yield return(top);
}
}
}
public void EnsureRadius(int radius)
{
if (radius > current_radius)
{
RectI2 old_rect = RectI2Extensions.CreateCenterRectI2(VectorI2.ZERO, new VectorI2(current_radius * 2, current_radius * 2));
RectI2 new_rect = RectI2Extensions.CreateCenterRectI2(VectorI2.ZERO, new VectorI2(radius * 2, radius * 2));
new_rect.GetSubtraction(old_rect)
.Convert(r => r.GetPoints())
.Flatten()
.Process(p => points.Add(new RadiatingPoint(p)));
current_radius = radius;
points.Sort((x, y) => x.GetDistance().CompareTo(y.GetDistance()));
}
}