setting up ci exports

.github/workflows/scripts/generate-stl-img.py

@@ -0,0 +1,42 @@
+#
+# Exports 3D STL files to a static image for documentation
+#
+
+import glob
+import subprocess
+import os
+import sys
+
+dirName = "Feeder-" + sys.argv[1] + "/img"
+if not os.path.exists(dirName):
+    os.mkdir(dirName)
+    print("Directory " , dirName ,  " Created ")
+else:    
+    print("Directory " , dirName ,  " already exists")
+
+for name in glob.glob(".github/workflows/scripts/stl-export/*.stl"):
+	
+	print(name)
+	
+	file=os.path.abspath(name)
+
+	f = open("./render_image.scad", "w")
+	f.write("import(\"")
+	f.write(file)
+	f.write("\", convexity=3);")
+	f.close()
+	
+	base = os.path.splitext(file)[0]
+	base = dirName + "/" + os.path.basename(name)
+	base = base[:-4]
+	print(base)
+
+	head, sep, tail = base.partition('_')
+	base = head
+		
+	
+	subprocess.call(["openscad","-o",base+".png", "--quiet", "--render", "--projection=o", "--viewall","--colorscheme","BeforeDawn", "--imgsize", "512,512", "--hardwarnings", "./render_image.scad" ])
+	#subprocess.call(["/Applications/OpenSCAD.app/Contents/MacOS/OpenSCAD","-o",base+".png", "--quiet", "--render", "--projection=o", "--viewall","--colorscheme","BeforeDawn", "--imgsize", "512,512", "--hardwarnings", "./render_image.scad" ])
+	
+if os.path.exists("./render_image.scad"):
+    os.remove("./render_image.scad")