== 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, 4 insertions, 1 deletions

diff --git a/source/blender/blenkernel/bad_level_call_stubs/stubs.c b/source/blender/blenkernel/bad_level_call_stubs/stubs.c
index f6f5ad193cc..b927cbe98ef 100644
--- a/source/blender/blenkernel/bad_level_call_stubs/stubs.c
+++ b/source/blender/blenkernel/bad_level_call_stubs/stubs.c
@@ -114,12 +114,15 @@ float BPY_pydriver_eval(struct IpoDriver *driver)
 {
 	return 0;
 }
-
 /* depsgraph.c: */
 struct Object **BPY_pydriver_get_objects(struct IpoDriver *driver)
 {
 	return 0;
 }
+int BPY_button_eval(char *expr, double *value)
+{
+	return 0;
+}
 
 /* writefile.c */
 	/* struct Oops; */