STEP AXIS2_PLACEMENT_3D vertical axis

[ws256]

Hello!
How do I read AXIS2_PLACEMENT_3D for the STEP format?
This is necessary for automatic detection of the vertical axis. Example:

ISO-10303-21;
HEADER;
FILE_DESCRIPTION(('Example of AXIS2_PLACEMENT_3D'),'2;1');
FILE_NAME('axis2_example.stp','2025-10-10T10:00:00',('ChatGPT'),'OpenAI', '','Example','','');
FILE_SCHEMA(('AUTOMOTIVE_DESIGN_CC2'));
ENDSEC;

DATA;
#1 = CARTESIAN_POINT('Origin',(0.0,0.0,0.0));
#2 = DIRECTION('Z_Axis',(0.0,0.0,1.0));
#3 = DIRECTION('X_Axis',(1.0,0.0,0.0));
#4 = AXIS2_PLACEMENT_3D('Local coordinate system',#1,#2,#3);

AXIS2_PLACEMENT_3D(name, location, axis, ref_direction)
location → origin
axis → The direction of axis #2 = (0, 0, 1) this is the Z-axis, i.e. the vertical axis.
ref_direction → direction of the reference axis