Octant enum
An arc of a circle equal to oneeigth of its circumference.
The octants are arranged as follows, with the origin (0, 0)
at the center
of the diagram, where the xaxis and yaxis intersect; each quadrant is
further divided into two octants, resulting in a total of eight setions, and
numbered counterclockwise from the topright corner (1
):
^ yaxis
\ 3  2 /
\  /
4 \/ 1
+ xaxis
5 /\ 8
/  \
/ 6  7 \
See also en.wikipedia.org/wiki/Circular_sector.
Usage
This class is provided as a utility for converting points between octants, which is useful when designing algorithms that operate on a 2D coordinate system, such as pathfinding or lineofsight calculations. For example, it's common to convert a point from it's current octant to the first octant to simplify calculations, and then convert it back to the original octant when the result is needed.
Examples
final octant = Octant.from(Pos(0, 0), Pos(2, 2));
print(octant); // Octant.first
Values
 first → const Octant

The first octant, from
0°
to45°
.  second → const Octant

The second octant, from
45°
to90°
.  third → const Octant

The third octant, from
90°
to135°
.  fourth → const Octant

The fourth octant, from
135°
to180°
.  fifth → const Octant

The fifth octant, from
180°
to225°
.  sixth → const Octant

The sixth octant, from
225°
to270°
.  seventh → const Octant

The seventh octant, from
270°
to315°
.  eighth → const Octant

The eighth octant, from
315°
to360°
.
Properties
Methods

fromOctant1(
Pos position) → Pos 
Converts the provided
position
from the octant's equivalent. 
noSuchMethod(
Invocation invocation) → dynamic 
Invoked when a nonexistent method or property is accessed.
inherited

toOctant1(
Pos position) → Pos 
Converts the provided
position
to the octant's equivalent. 
toString(
) → String 
A string representation of this object.
inherited
Operators

operator ==(
Object other) → bool 
The equality operator.
inherited