FreeCAD_Python_GDML

FreeCAD python Importer & Exporter for GDML files.

Note: Sister development https://github.com/KeithSloan/FreeCAD_Geant4

Installation Linux

To incorporate into FreeCAD linux.

Assumes you already have FreeCAD and git installed

1. Clone repository git clone https://github.com/KeithSloan/FreeCAD_Python_GDML.git

2. cd FreeCAD_Python_GDML

3. make sure softLink script is executable

4. Run softLink script to soft link the module into FreeCAD and FreeCAD-daily systems

Exporter

The following FreeCAD objects are output as GDML equivalents

1. Cube ( GDML - Box )
2. Cone ( GDML - Cone )
3. Cylinder ( GDML - Tube )
4. Sphere ( GDML - Sphere )

If not handled as above then objects shapes are checked to see if planar, if yes converts to Tessellated Solid with 3 or 4 vertex as appropriate. If not creates a mesh and then a Tessellated solid with 3 vertex.

Future Development Road Map

• Implement Booleans operations
• Workbench
  • Analize FreeCAD file for direct conversion of object to GDML solid
  • Display mesh for objects that will not directly convert
  • Provide options to control meshing objects that will be Tessellated
  • Icons to Analize and Export
• Add function for objects that can be directly converted
• Use lxml rather than etree (Needs apt-get install python-lxml)
• Tidy softLink script
• Make FreeCAD installable workbench
• Documentation
• Investigate handling of Materials

For NIST Materials database see http://physics.nist.gov/PhysRefData

Need to sort out AIR definition

Feedback

To contact the Author email keith[at]sloan-home.co.uk