How do I convert degrees to radians and vice versa in Godot?

Question

In a game I'm toying with in Godot engine I have angles given in degrees in some places and angles given in radians in other places. Sometimes I need to mix both angles (ie. add them).

What built-in function allows me to convert degrees to radians (and the other way around)? Or is there none?

P.S. I realize that converting those is not rocket science and I could code something on my own, but Godot is already doing such conversions internally, so I would venture a guess that such function already exists.

Answer 1

This can be achieved:

• Godot 3.x: using the deg2rad() and rad2deg functions.
• Godot 4.x: using the deg_to_rad() and rad_to_deg() functions.

Each function takes a float (the value being converted) and returns a float (the converted value).

Answer 2

Some nodes in Godot 3.0 have a property rotation_degrees that you can use, i.e

# rotate the node a quarter turn using radians
my_2D_node.rotation += PI / 2
# read the current rotation in degrees
my_2D_node.rotation_degrees

The property rotation_degrees can be read and set, so you can for example write the property as .rotation in radians where convenient and somewhere else in the script read the property as .rotation_degrees if degrees would be more convenient. The object will do the conversion for you