static public RectI2 GetBottomSlice(this RectI2 item, int amount)
{
return(RectI2Extensions.CreateStrictMinMaxRectI2(
item.GetLeft(),
item.GetBottom(),
item.GetRight(),
(item.GetBottom() + amount).BindBelow(item.GetTop())
));
}
static public RectI2 GetConstrainedAboveY(this RectI2 item, int y)
{
if (item.GetBottom() < y)
{
return(item.GetVerticallyShifted(y - item.GetBottom()));
}
return(item);
}
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);
}
}
}
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 IEnumerable <VectorI2> GetPoints(this RectI2 item)
{
for (int y = item.GetBottom(); y < item.GetTop(); y++)
{
for (int x = item.GetLeft(); x < item.GetRight(); x++)
{
yield return(new VectorI2(x, y));
}
}
}
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 bool FullyContains(this RectI2 item, RectI2 target)
{
if (item.GetLeft() <= target.GetLeft() && item.GetRight() >= target.GetRight())
{
if (item.GetBottom() <= target.GetBottom() && item.GetTop() >= target.GetTop())
{
return(true);
}
}
return(false);
}
static public bool TryGetConstrainedBy(this RectI2 item, RectI2 bounds, out RectI2 output)
{
output = item.GetConstrainedAboveX(bounds.GetLeft())
.GetConstrainedBelowX(bounds.GetRight())
.GetConstrainedAboveY(bounds.GetBottom())
.GetConstrainedBelowY(bounds.GetTop());
if (bounds.FullyContains(output))
{
return(true);
}
return(false);
}
static public int GetSide(this RectI2 item, RectSide side)
{
switch (side)
{
case RectSide.Left: return(item.GetLeft());
case RectSide.Right: return(item.GetRight());
case RectSide.Bottom: return(item.GetBottom());
case RectSide.Top: return(item.GetTop());
}
throw new UnaccountedBranchException("side", side);
}
static public void SplitByYBottomOffset(this RectI2 item, int y_offset, out RectI2 bottom, out RectI2 top)
{
item.SplitByY(item.GetBottom() + y_offset, out bottom, out top);
}
static public IntRange GetVerticalRange(this RectI2 item)
{
return(new IntRange(item.GetBottom(), item.GetTop()));
}
static public VectorI2 GetLowerRightPoint(this RectI2 item)
{
return(new VectorI2(item.GetRight(), item.GetBottom()));
}