From a3d2b211545388f945a2573b5c89383d538a60fb Mon Sep 17 00:00:00 2001
From: Phil Underwood <beardydoc@gmail.com>
Date: Wed, 24 Jul 2024 14:29:01 +0100
Subject: [PATCH] Make DXF construction work

---
 .github/workflows/release_bundle.yml |  3 ++-
 case/export_hardware.py              | 21 +++++++++++++++------
 case/generate_dxf.py                 | 19 +++++++++++++++++++
 3 files changed, 36 insertions(+), 7 deletions(-)
 create mode 100755 case/generate_dxf.py

diff --git a/.github/workflows/release_bundle.yml b/.github/workflows/release_bundle.yml
index 6e350bd..5311a04 100644
--- a/.github/workflows/release_bundle.yml
+++ b/.github/workflows/release_bundle.yml
@@ -11,7 +11,7 @@ jobs:
               run: |
                 sudo add-apt-repository ppa:kicad/kicad-8.0-releases
                 sudo apt update
-                sudo apt install -y wget libgl1 texlive-latex-base texlive-latex-extra latexmk kicad
+                sudo apt install -y wget libgl1 texlive-latex-base texlive-latex-extra latexmk kicad openscad
                 sudo pip install sphinx==6.1.3 sphinx-rtd-theme==1.2.0
             
             - name: Get freecad from cache
@@ -44,6 +44,7 @@ jobs:
                 ls
                 cd case
                 ~/bin/freecad --appimage-extract-and-run -c export_hardware.py
+                python3 generate_dxf.py
                 cd build
                 zip -r ../../hardware.zip *
             - name: export PCB files
diff --git a/case/export_hardware.py b/case/export_hardware.py
index 9427ce4..43da960 100644
--- a/case/export_hardware.py
+++ b/case/export_hardware.py
@@ -1,22 +1,31 @@
 import os
 import TechDraw
 import Mesh
+import time
+import subprocess
+
 FreeCAD.openDocument("bigboy.FCStd")
 doc = App.getDocument("bigboy")
+time.sleep(3)
 stl_parts = ("shim", "cap", "cap with vanes", "mount", "shell", "bezel")
 os.makedirs("build/abs/",exist_ok=True)
-for part_name in stl_parts:
-    print(f"Exporting {part_name}") 
-    part = doc.findObjects(Label=f"^{part_name}$")[0]
-    Mesh.export([part],f"build/abs/{part_name}.stl")
+#for part_name in stl_parts:
+#    print(f"Exporting {part_name}") 
+#    part = doc.findObjects(Label=f"^{part_name}$")[0]
+#    Mesh.export([part],f"build/abs/{part_name}.stl")
     
 drawings = doc.findObjects("TechDraw::DrawPage")
+drawing_stls = []
 for drawing in drawings:
     os.makedirs(f"build/{drawing.Label}/", exist_ok=True)
     for view in drawing.OutList:
         if view.TypeId == 'TechDraw::DrawViewPart':
-            print(f"Exporting {view.Source[0].Label}") 
-            TechDraw.writeDXFView(view,f"build/{drawing.Label}/{view.Source[0].Label}.dxf")
+            print(f"Exporting {view.Source[0].Label}")
+            # tech draw does not export DXFs properly from command line - so export as stl and we will post-process with openscad
+            #TechDraw.writeDXFView(view,f"build/{drawing.Label}/{view.Source[0].Label}.dxf")
+            fname = f"build/{drawing.Label}/{view.Source[0].Label}.stl"
+            Mesh.export(view.Source,fname)
+            drawing_stls.append(fname)
             
 FreeCAD.openDocument("button_mould.FCStd")
 doc = App.getDocument("button_mould")
diff --git a/case/generate_dxf.py b/case/generate_dxf.py
new file mode 100755
index 0000000..435bdcd
--- /dev/null
+++ b/case/generate_dxf.py
@@ -0,0 +1,19 @@
+#!/bin/env python3
+import subprocess
+import glob
+import os
+
+print("Creating DXFs")
+dirs = "[acrylic|Rubber]"
+cwd = os.path.dirname(os.path.abspath(__file__))
+drawing_stls = glob.glob(f"{cwd}/build/{dirs}*/*.stl")
+print("fnames: ", drawing_stls)
+for fname in drawing_stls:
+    if "Window" in fname:
+        rotation = ""
+    else:
+        rotation = "rotate(a=[90,0,0])"
+    command = f'projection() {rotation} import("{fname}");'
+    output = fname.replace("stl","dxf")
+    subprocess.run(["openscad","/dev/null","-D",command,"-o",output])
+