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Description:

angles

Dart Angles #
Official Dart package
This package provides an Angle type seeking to eliminate the use of variable suffixes like ...deg or ...rad
as well as manual angle unit conversions such as x * rad2deg and the likes.
Therefore, this package's raison d'être is not to serve features but to increase code maintainability,
thus reducing maintaince cost and bugs.
Angles can be constructed from these units: degrees, radians, gradians and turns.

Unit
Quantity of a full turn

Degree
360°

Radian
2π

Gradian
400ᵍ

Turn
1

Sample code #
// Various ways to define a half turn:
a0 = Angle.degrees(180.0);
a1 = Angle.radians(math.pi);
a2 = Angle.turns(0.5);

a0.degrees; // = 180.0
a1.radians; // = 3.1415...
a2.turns; // = 0.5
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Documentation #
Constructors:

Angle.degrees(x)
Angle.radians(x)
Angle.gradians(x)
Angle.turns(x)

Accessors:

.degrees()
.radians()
.gradians()
.turns()

Trigonometric functions:

.sin()
.cos()
.tan()
Angle.asin(x)
Angle.acos(x)
Angle.atan(x)
Angle.atan2(y, x)
Angle.atanFullTurn(y, x)
Angle.cartesian(x, y)

Utility functions:

.toString()
.approximately(other, range)
.ratio(other)
.normalized

All arithmetic and relational operators are defined on angles as well.