First prototype of bottom case: sides don't overlap enough, interior guides too widely apart, should align with fingers

battery-case-generator.py

@@ -36,33 +36,43 @@ else:
     args.hole = float(args.hole)
     assert(args.height != None)
 
-GRID   = args.hole+args.padding
+args.kerf2         = args.kerf/2
-RADIUS = args.hole/2
+args.grid          = args.hole+args.padding
-DIMX   = 2*(args.dimension+2)*GRID
+args.radius        = args.hole/2
-DIMY   = (args.dimension+2)*GRID
+args.interior_edge = args.grid*args.dimension*0.5+args.outside_padding
+args.exterior_edge = args.interior_edge+args.thickness
+args.interior_leg  = (args.interior_edge-args.horizontal_finger-args.kerf)/2
+args.n_hor_fingers = int(args.exterior_edge/args.horizontal_finger/2)
+args.exterior_leg  = (args.exterior_edge-(2*args.n_hor_fingers-1)*args.horizontal_finger+args.kerf)/2
+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
+
+DIMX   = 2.9*args.grid*args.dimension
+DIMY   = 3.8*args.grid*args.dimension
 PI3    = math.pi/3
 
 def draw_grid(cx, cy):
     for row in range(-int(args.dimension/2), int((args.dimension+1)/2)):
-        cyr = cy+GRID*row*math.sin(PI3)
+        cyr = cy+args.grid*row*math.sin(PI3)
         num_col = args.dimension-abs(row)
-        cxr = cx-.5*GRID*(num_col-1.0)
+        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*GRID, cyr, RADIUS))
+            print('<circle cx="%.2f" cy="%.2f" r="%.2f" stroke="black" fill="none"/>' % (cxr+col*args.grid, cyr, args.radius))
 
 def draw_plane(cx, cy, interior=False):
-    radius = GRID*args.dimension*0.5+args.outside_padding
+    if interior:
-    if not interior:
+        edge = args.interior_edge
-        radius += args.thickness
+    else:
+        edge = args.exterior_edge
     turtle       = svgturtle.SvgTurtle(cx, cy)
     turtle.penup()
-    turtle.forward(radius)
+    turtle.forward(edge)
     turtle.right(120)
     turtle.pendown()
     if interior:
-        leg = (radius-args.horizontal_finger-args.kerf)/2
         for side in range(6):
-            turtle.forward(leg)
+            turtle.forward(args.interior_leg)
             turtle.left(90)
             turtle.forward(args.thickness)
             turtle.right(90)
@@ -70,16 +80,76 @@ def draw_plane(cx, cy, interior=False):
             turtle.right(90)
             turtle.forward(args.thickness)
             turtle.left(90)
-            turtle.forward(leg)
+            turtle.forward(args.interior_leg)
             turtle.right(60)
     else:
         for side in range(6):
-            turtle.forward(radius)
+            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)
+                turtle.forward(args.thickness)
+                turtle.left(90)
+                turtle.forward(args.horizontal_finger-args.kerf)
+                turtle.left(90)
+                turtle.forward(args.thickness)
+                turtle.right(90)
+            turtle.forward(args.exterior_leg)
             turtle.right(60)
     print('<path d="%s" fill="none" stroke="black"/>' % turtle.to_s())
 
+def draw_side(x0, y0, h, slots):
+    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)
+        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-args.kerf-args.thickness)
+    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-args.thickness)
+    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)
+    print('<path d="%s" fill="none" stroke="black"/>' % 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))
+
 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(GRID*(0.5*args.dimension+1), GRID*(0.5*args.dimension+1))
+draw_grid(0.65*args.grid*args.dimension, 0.60*args.grid*args.dimension)
-draw_plane(GRID*(0.5*args.dimension+1), GRID*(0.5*args.dimension+1), True)
+draw_plane(0.65*args.grid*args.dimension, 0.60*args.grid*args.dimension, True)
-draw_plane(GRID*(1.5*args.dimension+3), GRID*(0.5*args.dimension+1))
+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_side(0.05*args.grid*args.dimension, 2.50*args.grid*args.dimension, args.height, [args.height*.3, args.height*.7])
+draw_side(0.75*args.grid*args.dimension, 2.50*args.grid*args.dimension, args.height, [args.height*.3, args.height*.7])
+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>')