Werner's Miscellanea
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1 | #!/usr/bin/python |
2 | |
3 | # all dimensions are mm |
4 | |
5 | from cadmium import * |
6 | |
7 | |
8 | but_top_x = 10.0 |
9 | but_top_y = but_top_x+5.0 |
10 | but_top_z = 1.5 |
11 | |
12 | but_corner_r = 2.0 |
13 | |
14 | but_base_border = 1.0 |
15 | but_base_x = but_top_x+2*but_base_border |
16 | but_base_y = but_top_y+2*but_base_border |
17 | but_base_z = 0.5 |
18 | |
19 | but_fillet_r = 0.4 |
20 | but_chamfer_r = 0.2 |
21 | |
22 | |
23 | # ----- Helper elements for fillets ------------------------------------------- |
24 | |
25 | |
26 | def fillet_line(x, r): |
27 | s = Box(x, r, r) |
28 | s -= Cylinder(r, h = x). \ |
29 | rotate(Y_axis, 90). \ |
30 | translate(0, r, r) |
31 | return s.translate(-x/2, 0, 0) |
32 | |
33 | def fillet_circle(r, fillet_r): |
34 | return Cylinder(r+fillet_r, h = fillet_r)- \ |
35 | Torus(r+fillet_r, fillet_r, center = True). \ |
36 | translate(0, 0, fillet_r) |
37 | |
38 | |
39 | # ----- Helper elements for chamfers ------------------------------------------ |
40 | |
41 | |
42 | def chamfer_line (x, r): |
43 | s = Box(x, r, r) |
44 | s -= Cylinder(r, h = x). \ |
45 | rotate(Y_axis, 90) |
46 | return s.translate(-x/2, -r, -r) |
47 | |
48 | def chamfer_circle(r, fillet_r): |
49 | return Box(2*(r), 2*(r), fillet_r). \ |
50 | translate(-r, -r, -fillet_r)- \ |
51 | Cylinder(r-fillet_r, h = fillet_r). \ |
52 | translate(0, 0, -fillet_r)- \ |
53 | Torus(r-fillet_r, fillet_r, center = True). \ |
54 | translate(0, 0, -fillet_r) |
55 | |
56 | |
57 | # ----- Box with rounded corners ---------------------------------------------- |
58 | |
59 | |
60 | def rbox_core(x, y, z, r): |
61 | return Box(x-2*r, y, z, center = True).translate(0, 0, z/2)+ \ |
62 | Box(x, y-2*r, z, center = True).translate(0, 0, z/2) |
63 | |
64 | def rbox(x, y, z, r): |
65 | s = rbox_core(x, y, z, r) |
66 | for dx in [-1, 1]: |
67 | for dy in [-1, 1]: |
68 | s += Cylinder(r, h = z). \ |
69 | translate(dx*(x/2-r), dy*(y/2-r), 0) |
70 | return s |
71 | |
72 | def rbox_fillet_bottom(x, y, z, r, fillet_r): |
73 | s = None |
74 | for a in [0, 180]: |
75 | t = fillet_line(x-2*r, fillet_r). \ |
76 | translate(0, y/2, 0). \ |
77 | rotate(Z_axis, a) |
78 | if s is None: |
79 | s = t |
80 | else: |
81 | s += t |
82 | s += fillet_line(y-2*r, fillet_r). \ |
83 | translate(0, x/2, 0). \ |
84 | rotate(Z_axis, a+90) |
85 | for dx in [-1, 1]: |
86 | for dy in [-1, 1]: |
87 | s += fillet_circle(r, fillet_r). \ |
88 | translate(dx*(x/2-r), dy*(y/2-r), 0) |
89 | return s |
90 | |
91 | def rbox_chamfer_top_corners(x, y, z, r, chamfer_r): |
92 | s = None |
93 | for dx in [-1, 1]: |
94 | for dy in [-1, 1]: |
95 | t = chamfer_circle(r, chamfer_r). \ |
96 | translate(dx*(x/2-r), dy*(y/2-r), z) |
97 | if s is None: |
98 | s = t |
99 | else: |
100 | s += t |
101 | return s-rbox_core(x, y, z, r) |
102 | |
103 | def rbox_chamfer_top(x, y, z, r, chamfer_r): |
104 | s = rbox_chamfer_top_corners(x, y, z, r, chamfer_r) |
105 | for a in [0, 180]: |
106 | s += chamfer_line(x-2*r, chamfer_r). \ |
107 | translate(0, y/2, z). \ |
108 | rotate(Z_axis, a) |
109 | s += chamfer_line(y-2*r, chamfer_r). \ |
110 | translate(0, x/2, z). \ |
111 | rotate(Z_axis, a+90) |
112 | return s |
113 | |
114 | def rbox_chamfer_bottom(x, y, z, r, chamfer_r): |
115 | return rbox_chamfer_top(x, y, z, r, chamfer_r). \ |
116 | translate(0, 0, -z). \ |
117 | rotate(X_axis, 180) |
118 | |
119 | # ----- Button ---------------------------------------------------------------- |
120 | |
121 | |
122 | def button_top(): |
123 | return rbox(but_top_x, but_top_y, but_top_z, but_corner_r)- \ |
124 | rbox_chamfer_top(but_top_x, but_top_y, but_top_z, \ |
125 | but_corner_r, but_chamfer_r)+ \ |
126 | rbox_fillet_bottom(but_top_x, but_top_y, but_top_z, but_corner_r, |
127 | but_fillet_r) |
128 | |
129 | def button_base(): |
130 | s = rbox(but_base_x, but_base_y, but_base_z, but_corner_r)- \ |
131 | rbox_chamfer_top(but_base_x, but_base_y, but_base_z, \ |
132 | but_corner_r, but_chamfer_r)- \ |
133 | rbox_chamfer_bottom(but_base_x, but_base_y, but_base_z, \ |
134 | but_corner_r, but_chamfer_r) |
135 | return s.translate(0, 0, -but_base_z) |
136 | |
137 | def button(): |
138 | return button_top()+button_base() |
139 | |
140 | b = button() |
141 | b.toSTL("button.stl") |
142 |
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