Crate angle_sc

An angle represented by its sine and cosine.

The cosine and sine of angle θ can be viewed as x and y coordinates with θ measured anti-clockwise from the x axis.
They form a unit circle, see Figure 1.

Figure 1 Unit circle formed by sin θ and cos θ

The Angle on the opposite side of the unit circle is calculated by simply negating the sin and cos of Angle.
Angle addition and subtraction are performed using angle sum and difference identities.
Angle double uses the double-angle formulae and half uses the half-angle formulae.
The Angle < operator compares whether an Angle is clockwise of the other Angle on the unit circle.

The sin and cos fields of Angle are UnitNegRanges:, a newtype with values in the range -1.0 to +1.0 inclusive.
The Degrees and Radians newtypes are used to convert to and from Angles.
The Validate trait is used to check that Angles and UnitNegRanges are valid.

The library is declared no_std so it can be used in embedded applications.

Modules

• trig
  The trig module contains the UnitNegRange newtype struct and trigonometric functions.

Structs

• Angle
  An angle represented by it’s sine and cosine as UnitNegRanges.
• Degrees
  The Degrees newtype an f64.
• Radians
  The Radians newtype an f64.

Traits

• Validate
  The Validate trait.

Functions

• clamp
  Clamp a value to lie in the range min, max inclusive.
• is_small
  Check whether value <= tolerance.
• is_within_tolerance
  Check whether a value is within tolerance of a reference value.
• max
  Return the maximum of a or b.
• min
  Return the minimum of a or b.