expose math functions to gcode macros by mental

README.md

@@ -32,6 +32,8 @@ If I want my printer to light itself on fire, I should be able to make my printe
 
 - [gcode: gcode_shell_command](https://github.com/DangerKlippers/danger-klipper/pull/26) ([klipper#2173](https://github.com/Klipper3d/klipper/pull/2173) / [kiuah](https://github.com/dw-0/kiauh/blob/master/resources/gcode_shell_command.py) )
 
+- [gcode: expose math functions to gcode macros](https://github.com/DangerKlippers/danger-klipper/pull/173) ([klipper#4072](https://github.com/Klipper3d/klipper/pull/4072))
+
 - [probe: dockable Probe](https://github.com/DangerKlippers/danger-klipper/pull/43) ([klipper#4328](https://github.com/Klipper3d/klipper/pull/4328))
 
 - [probe: drop the first result](https://github.com/DangerKlippers/danger-klipper/pull/2) ([klipper#3397](https://github.com/Klipper3d/klipper/issues/3397))

klippy/extras/gcode_macro.py

@@ -4,13 +4,14 @@
 #
 # This file may be distributed under the terms of the GNU GPLv3 license.
 import traceback, logging, ast, copy, json
-import jinja2
+import jinja2, math
 
 
 ######################################################################
 # Template handling
 ######################################################################
 
+
 # Wrapper for access to printer object get_status() methods
 class GetStatusWrapper:
     def __init__(self, printer, eventtime=None):
@@ -120,6 +121,7 @@ def create_template_context(self, eventtime=None):
             "action_respond_info": self._action_respond_info,
             "action_raise_error": self._action_raise_error,
             "action_call_remote_method": self._action_call_remote_method,
+            "math": math,
         }