2.6 KiB
Angle
Arduino library for basic math for Angles in degrees, minute, seconds and ten-thousands.
Description
Angle is an Arduino class to print, compare and do basic maths with angles in degrees, minutes seconds and ten-thousands. The class was created to be able to print an angle with minutes and seconds instead of as a floating point or radians.
To make the library more useful basic maths ( + - * / ) and comparisons ( == != < <= > >= ) are added to the class.
The library implements the Printable interface, allowing one to call
Serial.println(angle) or SD.print(angle).
Interface
Constructors
- Angle(int dd = 0, int mm = 0, int ss = 0, int tt = 0) create an Angle, default is zero.
- Angle(double alpha) create an Angle from a double.
- Angle(char * str) create an Angle from a string e.g. "45.31234".
base
- int sign() returns -1 or 1.
- int degree() returns # degrees.
- int minute() returns # minutes.
- int second() returns # seconds.
- int tenthousand() returns # ten-thousands of a second.
Conversions
- double toDouble() returns the angle as a double (0..360.0, float on UNO).
- double toRadians() returns the angle in radians (0..TWO_PI).
- void fromRadian(double rad) create an angle from radians.
Equality operators
The library supports equality operator "==", "!=", "<" "<=" ">" and ">=" .
Math operators
- negate returns -angle.
- addition and subtract add angles to angles.
- multiplication and division multiply an angle with a double.
- ratio ratio = Angle/Angle.
Operation
See examples.
Note
The library has not been tested extensively and it could still contain bugs. Especially the constructor does not check input so use it carefully.
Future
- improve documentation
- test more
- optimize code where possible