Flex case experiment: Not structurally sound

battery-case-generator.py

@@ -47,20 +47,26 @@ args.exterior_leg  = (args.exterior_edge-(2*args.n_hor_fingers-1)*args.horizonta
 args.exterior_slot = (args.exterior_edge-args.horizontal_finger+args.kerf)/2
 args.n_ver_fingers = int(args.height/args.vertical_finger/2)
 args.vertical_finger = args.height/args.n_ver_fingers/2
+args.slots         = [args.vertical_finger*2.5-args.thickness*0.5, args.vertical_finger*4.5-args.thickness*0.5]
 
-DIMX   = 2.9*args.grid*args.dimension
+DIMX   = 5.0*args.grid*args.dimension
-DIMY   = 3.8*args.grid*args.dimension
+DIMY   = 3.0*args.grid*args.dimension
 PI3    = math.pi/3
 
+HOLES  = ''
+SHAPES = ''
+
 def draw_grid(cx, cy):
+    global HOLES
     for row in range(-int(args.dimension/2), int((args.dimension+1)/2)):
         cyr = cy+args.grid*row*math.sin(PI3)
         num_col = args.dimension-abs(row)
         cxr = cx-.5*args.grid*(num_col-1.0)
         for col in range(num_col):
-            print('<circle cx="%.2f" cy="%.2f" r="%.2f" stroke="black" fill="none"/>' % (cxr+col*args.grid, cyr, args.radius))
+            HOLES += '<circle cx="%.2f" cy="%.2f" r="%.2f"/>\n' % (cxr+col*args.grid, cyr, args.radius)
 
 def draw_plane(cx, cy, interior=False):
+    global SHAPES
     if interior:
         edge = args.interior_edge
     else:
@@ -71,7 +77,7 @@ def draw_plane(cx, cy, interior=False):
     turtle.right(120)
     turtle.pendown()
     if interior:
-        for side in range(6):
+        for side in range(5):
             turtle.forward(args.interior_leg)
             turtle.left(90)
             turtle.forward(args.thickness)
@@ -82,8 +88,9 @@ def draw_plane(cx, cy, interior=False):
             turtle.left(90)
             turtle.forward(args.interior_leg)
             turtle.right(60)
+        turtle.forward(args.interior_edge)
     else:
-        for side in range(6):
+        for side in range(5):
             for finger in range(args.n_hor_fingers):
                 turtle.forward(args.exterior_leg if finger == 0 else args.horizontal_finger+args.kerf)
                 turtle.right(90)
@@ -95,9 +102,11 @@ def draw_plane(cx, cy, interior=False):
                 turtle.right(90)
             turtle.forward(args.exterior_leg)
             turtle.right(60)
-    print('<path d="%s" fill="none" stroke="black"/>' % turtle.to_s())
+        turtle.forward(args.exterior_edge)
+    SHAPES += '<path d="%s"/>\n' % turtle.to_s()
 
 def draw_side(x0, y0, h, slots):
+    global HOLES, SHAPES
     turtle = svgturtle.SvgTurtle(x0, y0+args.thickness)
     for finger in range(args.n_hor_fingers):
         turtle.forward(args.exterior_leg-args.kerf if finger == 0 else args.horizontal_finger-args.kerf)
@@ -132,24 +141,94 @@ def draw_side(x0, y0, h, slots):
         if finger < args.n_ver_fingers-1:
             turtle.forward(args.thickness)
             turtle.left(90)
-    print('<path d="%s" fill="none" stroke="black"/>' % turtle.to_s())
+    SHAPES += '<path d="%s"/>\n' % turtle.to_s()
     for slot in slots:
         x = x0+args.exterior_slot
         y = y0+slot
         w = args.horizontal_finger-args.kerf
         h = args.thickness-args.kerf
-        print('<rect x="%.2f" y="%.2f" width="%.2f" height="%.2f" fill="none" stroke="black"/>' % (x, y, w, h))
+        HOLES += '<rect x="%.2f" y="%.2f" width="%.2f" height="%.2f"/>\n' % (x, y, w, h)
+
+def draw_case(x0, y0, h, slots):
+    global HOLES, SHAPES
+    turtle = svgturtle.SvgTurtle(x0, y0)
+    turtle.forward(args.exterior_edge*0.5)
+    for side in range(6):
+        turtle.right(90)
+        turtle.forward(args.height-args.thickness)
+        turtle.penup()
+        turtle.back(args.height-args.thickness)
+        turtle.left(90)
+        turtle.forward(2*args.thickness)
+        turtle.right(90)
+        turtle.pendown()
+        turtle.forward(args.height-args.thickness)
+        turtle.penup()
+        turtle.back(args.height-args.thickness)
+        turtle.left(90)
+        turtle.pendown()
+        if side==5:
+            break
+        turtle.forward(args.exterior_edge-args.thickness*2)
+    turtle.forward(args.exterior_edge*0.5-args.thickness*2)
+    turtle.right(90)
+    for finger in range(args.n_ver_fingers):
+        turtle.forward(args.vertical_finger-(args.kerf/2 if finger==0 else args.kerf))
+        turtle.left(90)
+        turtle.forward(args.thickness)
+        turtle.right(90)
+        turtle.forward(args.vertical_finger+args.kerf)
+        turtle.right(90)
+        if finger < args.n_ver_fingers-1:
+            turtle.forward(args.thickness)
+            turtle.left(90)
+    turtle.forward(args.exterior_edge*0.5)
+    for side in range(6):
+        turtle.right(90)
+        turtle.forward(args.height-args.thickness)
+        turtle.penup()
+        turtle.back(args.height-args.thickness)
+        turtle.left(90)
+        turtle.pendown()
+        if side==5:
+            break
+        for finger in range(args.n_hor_fingers):
+            turtle.forward(args.exterior_leg if finger == 0 else args.horizontal_finger+args.kerf)
+            turtle.left(90)
+            turtle.forward(args.thickness)
+            turtle.right(90)
+            turtle.forward(args.horizontal_finger-args.kerf)
+            turtle.right(90)
+            turtle.forward(args.thickness)
+            turtle.left(90)
+        turtle.forward(args.exterior_leg)
+    turtle.forward(args.exterior_edge*0.5)
+    turtle.right(90)
+    for finger in range(args.n_ver_fingers):
+        turtle.forward(args.vertical_finger-(args.kerf/2 if finger==0 else args.kerf))
+        turtle.left(90)
+        turtle.forward(args.thickness)
+        turtle.right(90)
+        turtle.forward(args.vertical_finger+args.kerf)
+        turtle.right(90)
+        if finger < args.n_ver_fingers-1:
+            turtle.forward(args.thickness)
+            turtle.left(90)
+    SHAPES += '<path d="%s"/>\n' % turtle.to_s()
+    for slot in slots:
+        for side in range(5):
+            x = x0+(side+0.5)*args.exterior_edge+args.thickness+args.exterior_slot
+            y = y0+slot
+            w = args.horizontal_finger-args.kerf
+            h = args.thickness-args.kerf
+            HOLES += '<rect x="%.2f" y="%.2f" width="%.2f" height="%.2f"/>\n' % (x, y, w, h)
 
 print('<svg viewBox="0 0 %.2f %.2f" width="%.2fmm" height="%.2fmm" stroke-width="0.1" xmlns="http://www.w3.org/2000/svg">' % (DIMX, DIMY, DIMX, DIMY))
 draw_grid(0.65*args.grid*args.dimension, 0.60*args.grid*args.dimension)
 draw_plane(0.65*args.grid*args.dimension, 0.60*args.grid*args.dimension, True)
 draw_grid(1.90*args.grid*args.dimension, 0.60*args.grid*args.dimension)
 draw_plane(1.90*args.grid*args.dimension, 0.60*args.grid*args.dimension, True)
-draw_plane(0.65*args.grid*args.dimension, 1.90*args.grid*args.dimension)
+draw_plane(3.15*args.grid*args.dimension, 0.60*args.grid*args.dimension)
-draw_side(0.05*args.grid*args.dimension, 2.50*args.grid*args.dimension, args.height, [args.height*.3, args.height*.7])
+draw_case(0.05*args.grid*args.dimension, 1.25*args.grid*args.dimension, args.height, args.slots)
-draw_side(0.75*args.grid*args.dimension, 2.50*args.grid*args.dimension, args.height, [args.height*.3, args.height*.7])
+print('<g fill="none" stroke="red">', HOLES, '</g>', '<g fill="none" stroke="black">', SHAPES, '</g>', sep='\n')
-draw_side(1.45*args.grid*args.dimension, 2.50*args.grid*args.dimension, args.height, [args.height*.3, args.height*.7])
-draw_side(2.15*args.grid*args.dimension, 2.50*args.grid*args.dimension, args.height, [args.height*.3, args.height*.7])
-draw_side(1.35*args.grid*args.dimension, 1.25*args.grid*args.dimension, args.height, [args.height*.3, args.height*.7])
-draw_side(2.05*args.grid*args.dimension, 1.25*args.grid*args.dimension, args.height, [args.height*.3, args.height*.7])
 print('</svg>')