try to add support geometry

2 files changed, 37 insertions, 25 deletions

diff --git a/cad/assembly.py b/cad/assembly.py
index f6da273..c850532 100644
--- a/cad/assembly.py
+++ b/cad/assembly.py
@@ -4,16 +4,8 @@ from solid.utils import *
 from . import parameters
 
 
-def motherboard_support():
-    support = cube(parameters.motherboard_support_size, center=True)
-    return color(parameters.colors.metal)(render()(support))
-
-
-def motherboard():
-    mb_size = parameters.motherboard_size
-    board = cube(mb_size, center=True)
-    datum = [mb_size[0]/2 - 243.84 + 34.29, mb_size[1]/2 - 10.16]
-    holes = [
+def motherboard_holes(datum=parameters.motherboard_datum):
+    return [
         datum,
         [datum[0] + 45.72, datum[1]],
         [datum[0] + 203.2, datum[1] - 22.86],
@@ -26,24 +18,41 @@ def motherboard():
         [datum[0] + 45.72, datum[1] - 227.33],
         [datum[0] + 203.2, datum[1] - 227.33],
     ]
-    hole_cylinders = union()([
+
+
+def motherboard_hole_objects(datum=parameters.motherboard_datum):
+    return union()([
         translate([h[0], h[1], 0])(cylinder(h=10, r=3.96/2, center=True))
-        for h in holes
+        for h in motherboard_holes(datum)
     ])
-    #for hole in holes:
-    #    board = board - translate([hole[0], hole[1], 0])(
-    #        cylinder(h = 10, r=3.96/2, center=True)
-    #    )
-    return color(parameters.colors.motherboard)(render()(board
-                + hole_cylinders))
 
-def main():
 
-    #d = difference()(
-    #    cube(10, center=True),
-    #    cylinder(h=10, r=4, center=True)
-    #)
+def motherboard():
+    hole_objects = motherboard_hole_objects()
+    mb_size = parameters.motherboard_size
+    board = cube(mb_size, center=True)
+    return color(parameters.colors.motherboard)(render()(board - hole_objects))
+
+
+def motherboard_support():
+    plan_size = parameters.motherboard_support_size
+    support = cube(plan_size, center=True)
+    hmount = parameters.motherboard_support_mount_height
+    support_mounts = union()([
+        translate([h[0], h[1], plan_size[2]/2 + hmount/2])(
+            difference()(
+                cylinder(h=hmount, r=2.5, center=True),
+                cylinder(h=hmount + 1, r=1.5, center=True),
+            )
+        )
+        for h in motherboard_holes()
+    ])
+    support = support + support_mounts
+    return color(parameters.colors.metal)(render()(support))
 
-    #d = render()(d)
-    scad_render_to_file(motherboard(), 'assembly.scad',
+
+def main():
+    #d = motherboard()
+    d = motherboard_support()
+    scad_render_to_file(d, 'assembly.scad',
                         include_orig_code=False)
diff --git a/cad/parameters.py b/cad/parameters.py
index fd38e57..34e4a28 100644
--- a/cad/parameters.py
+++ b/cad/parameters.py
@@ -12,6 +12,9 @@ external_size = [370, 270, 180]
 connector_panel_size = [158.75, 2, 45]
 motherboard_size = [243.84, 243.84, 3]
 motherboard_support_size = [280, 220, 1]
+motherboard_datum = [motherboard_size[0]/2 - 243.84 + 34.29,
+                     motherboard_size[1]/2 - 10.16]
+motherboard_support_mount_height = 5
 powersupply_size = [150, 150, 80]
 storage_size = [70, 80, 10]
 wood_thickness = 16