0000931: Can't change STEP/IGES export units through Python interface - FreeCAD Tracker

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ID	Project	Category	View Status	Date Submitted	Last Update

0000931	FreeCAD	Feature	public	2012-12-23 20:43	2013-07-09 15:03

Reporter	thatcadguy	Assigned To	wmayer
Priority	normal	Severity	feature	Reproducibility	always
Status	closed	Resolution	fixed
Product Version	0.12
Target Version	0.14	Fixed in Version	0.14

Summary	0000931: Can't change STEP/IGES export units through Python interface
Description	By default, STEP/IGES export is in mm. You can change the units by going to Preferences->Part design->Export->Units for export of STEP/IGES. When this happens, DlgSettingsGeneral::saveSettings() is called (/Mod/Part/Gui/DlgSettingsGeneral.cpp) and it does 2 things: - Change the units in BaseApp/Preferences/Mod/Part - Change the units in OpenCASCADE's settings: write.step.unit and write.iges.unit Currently, you can only do the 1st part from Python: params = FreeCAD.ParamGet('User parameter:BaseApp/Preferences/Mod/Part') params.SetInt('Unit',unit) However, without doing the 2nd part (e.g. not changing the setting via dialog and only doing the above 2 lines in a script), the STEP/IGES files are still exported as mm. In order to remedy this, I have constructed the following from DlgSettingsGeneral::saveSettings(): static PyObject * setExportUnits(PyObject self, PyObject args) { int unit; if (!PyArg_ParseTuple(args, "i", &unit)) return NULL; Base::Reference<ParameterGrp> hGrp = App::GetApplication().GetUserParameter() .GetGroup("BaseApp")->GetGroup("Preferences")->GetGroup("Mod/Part"); hGrp->SetInt("Unit", unit); switch (unit) { case 1: Interface_Static::SetCVal("write.iges.unit","M"); Interface_Static::SetCVal("write.step.unit","M"); break; case 2: Interface_Static::SetCVal("write.iges.unit","IN"); Interface_Static::SetCVal("write.step.unit","IN"); break; default: Interface_Static::SetCVal("write.iges.unit","MM"); Interface_Static::SetCVal("write.step.unit","MM"); break; } } The following should be added to the Python methods registration table: {"setExportUnits", setExportUnits, METH_VARARGS, "setExportUnits(unit) -- Set units for exporting STEP/IGES files"} Not sure where this function should be added, I was thinking /src/Mod/Part/App/AppPartPy.cpp. Anyway, the function should work and is straightforward, I'd appreciate it if someone more familiar with FreeCAD's code as a whole could look it over and add it to the appropriate place. Thanks!
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FreeCAD Information

Date Modified	Username	Field	Change
2012-12-23 20:43	thatcadguy	New Issue
2012-12-23 20:55	thatcadguy	Note Added: 0002761
2012-12-23 22:01	~~Jriegel~~	Status	new => acknowledged
2012-12-27 13:08	wmayer	Target Version	=> 0.14
2013-07-02 03:51	wmayer	Status	acknowledged => assigned
2013-07-02 03:51	wmayer	Assigned To	=> wmayer
2013-07-09 15:03	wmayer	Note Added: 0003368
2013-07-09 15:03	wmayer	Status	assigned => closed
2013-07-09 15:03	wmayer	Resolution	open => fixed
2013-07-09 15:03	wmayer	Fixed in Version	=> 0.14