Angle type for canvas rotation and arc parameters.

Accepts degrees by default. Use {value, :rad} for explicit radians or {value, :deg} for explicit degrees.

rotate(45)              # 45 degrees
rotate({45, :deg})      # same
rotate({0.785, :rad})   # explicit radians

The renderer receives degrees on the wire. Bare numbers are treated as degrees (matching the Rust SDK convention). Values are normalized to degrees at cast time.

When used as a field type, values are normalized to degrees at cast time. The to_radians/1 function is available for contexts that need radian values.