== Python Button Evaluation ==

Users can write any valid Python expression (that evals to an int or float) inside Blender's gui number buttons (preceded by #) and have them evaluated to their actual int or float value.

Button Evaluation has access to the same modules as PyDrivers.

For example:

#1.0*9-2.3
#ob("Camera").LocZ
#1.0/ob("Cube").LocX
#math.sin(math.pi) -- or simply #m.sin(m.pi)
etc

1 files changed, 2 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_bad_level_calls.h b/source/blender/blenkernel/BKE_bad_level_calls.h
index 9e1870ac36f..4ae25a44b94 100644
--- a/source/blender/blenkernel/BKE_bad_level_calls.h
+++ b/source/blender/blenkernel/BKE_bad_level_calls.h
@@ -71,6 +71,8 @@ void BPY_free_screen_spacehandlers (struct bScreen *sc);
 struct Object **BPY_pydriver_get_objects(struct IpoDriver *driver);
 float BPY_pydriver_eval(struct IpoDriver *driver);
 void BPY_pydriver_update(void);
+/* button python evaluation */
+int BPY_button_eval(char *expr, double *value);
 
 /* writefile.c */
 struct Oops;