diff --git a/battery-case-generator.py b/battery-case-generator.py
index 6063b04..5eba2c9 100755
--- a/battery-case-generator.py
+++ b/battery-case-generator.py
@@ -13,11 +13,13 @@ parser.add_argument('--kerf', default=.1, type=float, help='Kerf')
parser.add_argument('--corner-length', default=4, help='Length of stretch corner in material thicknesses')
parser.add_argument('--stretch', default=1.05, type=float, help='Reduction factor of stretch material')
parser.add_argument('--horizontal-finger', default=5.0, type=float, help='Width of horizontal fingers')
-parser.add_argument('--vertical-finger', default=5.0, type=float, help='Width of vertical fingers')
+parser.add_argument('--vertical-finger', default=15.0, type=float, help='Width of vertical fingers')
parser.add_argument('--padding', default=1.5, type=float, help='Padding around holes')
-parser.add_argument('--outside-padding', default=4, type=float, help='Extra padding between holes and wall')
+parser.add_argument('--outside-padding', default=4.0, type=float, help='Extra padding between holes and wall')
+parser.add_argument('--extra-height', default=2.0, type=float, help='Extra vertical space')
parser.add_argument('--thickness', default=3.0, type=float, help='Thickness of material')
parser.add_argument('--lid', default=0.2, type=float, help='How much extra play to give the lid')
+parser.add_argument('--tooth', default=0.8, type=float, help='How much to round the edges of the teeth')
parser.add_argument('--verbose', action='store_true', help='Print computed parameter values')
args = parser.parse_args()
assert (args.dimension % 2) == 1
@@ -54,17 +56,18 @@ args.interior_leg = (args.interior_edge-args.horizontal_finger-args.kerf)/2-arg
finger_length = args.interior_edge-2.0*args.corner_inset
args.n_hor_fingers = max(int(finger_length/args.horizontal_finger/2), 1)
args.exterior_leg = (finger_length-(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
-args.slots = [args.vertical_finger*2.5-args.thickness*0.5, args.vertical_finger*4.5-args.thickness*0.5]
+args.wall_leg = (args.interior_edge-args.corner-(2*args.n_hor_fingers-1)*args.horizontal_finger+args.kerf)/2
+args.exterior_slot = (args.interior_edge-args.horizontal_finger+args.kerf)/2
+args.n_ver_fingers = int((args.height+args.extra_height)/args.vertical_finger)
+top_slot = args.extra_height+0.5*args.height
+args.slots = [top_slot, top_slot+2*args.thickness]
if args.verbose:
print(args, file=sys.stderr)
BOX = 2.0*args.exterior_edge+5.0
DIMX = 3.0*BOX
-DIMY = 2.0*BOX+args.height+3.0*args.thickness
+DIMY = 2.0*BOX+args.height+args.extra_height+2.0*args.thickness+5.0
PI3 = math.pi/3
HOLES = ''
@@ -171,119 +174,111 @@ def draw_plane(cx, cy, layer):
turtle.circle(args.corner_radius, 60)
HOLES += '\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)
+def draw_flex(t, h):
+ global HOLES
+ turtle = svgturtle.SvgTurtle(t.x, t.y)
+ al = h/3.0-args.thickness
+ bl = (h-args.thickness)/3.0-args.thickness
+ nx = int(args.corner_length)
+ dx = args.corner/(2*nx-1)
+ for stripe in range(nx):
+ turtle.right(90)
+ turtle.forward(0.5*al)
+ turtle.penup()
+ turtle.forward(args.thickness)
+ turtle.pendown()
+ turtle.forward(al)
+ turtle.penup()
+ turtle.forward(args.thickness)
+ turtle.pendown()
+ turtle.forward(al)
+ turtle.penup()
+ turtle.forward(args.thickness)
+ turtle.pendown()
+ turtle.forward(0.5*al)
+ turtle.penup()
+ turtle.left(90)
+ turtle.forward(dx)
+ turtle.left(90)
+ turtle.forward(args.thickness)
+ turtle.pendown()
+ turtle.forward(bl)
+ turtle.penup()
+ turtle.forward(args.thickness)
+ turtle.pendown()
+ turtle.forward(bl)
+ turtle.penup()
+ turtle.forward(args.thickness)
+ turtle.pendown()
+ turtle.forward(bl)
+ turtle.penup()
+ turtle.forward(args.thickness)
+ turtle.right(90)
+ turtle.forward(dx)
+ turtle.pendown()
+ HOLES += '\n' % turtle.to_s()
+
+def draw_case_h(turtle, h, top):
+ turtle.forward(0.5*args.interior_edge-0.5*args.corner)
+ for side in range(6):
turtle.left(90)
turtle.forward(args.thickness)
turtle.right(90)
- turtle.forward(args.horizontal_finger+args.kerf)
+ if top:
+ draw_flex(turtle, h+2*args.thickness)
+ turtle.forward(args.corner)
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:
+ if side == 5:
+ break
+ turtle.forward(args.wall_leg-0.5*args.kerf)
+ for finger in range(args.n_hor_fingers):
+ if finger > 0:
+ turtle.forward(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_edge-args.thickness)
- turtle.right(90)
+ turtle.forward(args.wall_leg-0.5*args.kerf)
+ turtle.forward(0.5*args.interior_edge-0.5*args.corner)
+
+def draw_case_v(turtle, h):
+ ey = turtle.y+h
+ leg = (h-(args.n_ver_fingers-0.66)*args.vertical_finger)/2.0
+ slope = args.vertical_finger/math.sqrt(18)
+ turtle.forward(leg)
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 += '\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
- HOLES += '\n' % (x, y, w, h)
+ ty = ey if finger==args.n_ver_fingers-1 else turtle.y+args.vertical_finger
+ turtle.circle(args.tooth, 135)
+ turtle.forward(slope)
+ turtle.circle(-args.tooth, 135)
+ turtle.forward(0.66*args.vertical_finger)
+ turtle.circle(-args.tooth, 135)
+ turtle.forward(slope)
+ turtle.circle(args.tooth, 135)
+ turtle.forward(ty-turtle.y)
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 = svgturtle.SvgTurtle(x0, y0+args.thickness)
+ draw_case_h(turtle, h, True)
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)
+ draw_case_v(turtle, h)
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)
+ draw_case_h(turtle, h, False)
+ turtle.penup()
+ turtle.left(90)
+ turtle.back(h)
+ turtle.pendown()
+ draw_case_v(turtle, h)
SHAPES += '\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
+ x = x0+(side+.5)*args.interior_edge+args.exterior_slot
y = y0+slot
w = args.horizontal_finger-args.kerf
h = args.thickness-args.kerf
@@ -299,6 +294,6 @@ draw_plane(1.5*BOX, 1.5*BOX, 'rim')
draw_plane(1.5*BOX, 1.5*BOX, 'plug')
draw_plane(2.5*BOX, 1.5*BOX, 'lid')
draw_plane(2.5*BOX, 1.5*BOX, 'plug_mark')
-draw_case(0.05*args.grid*args.dimension, 2.0*BOX, args.height, args.slots)
+draw_case(0.05*args.grid*args.dimension, 2.0*BOX, args.height+args.extra_height, args.slots)
print('', HOLES, '', '', MARKS, '', '', SHAPES, '', sep='\n')
print('')