Werner's Miscellanea
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Werner's Miscellanea Commit Details
Date: | 2011-07-23 10:22:55 (12 years 8 months ago) |
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Author: | Werner Almesberger |
Commit: | 83ddf112db74e790a19a67e76e877f71e4bae58c |
Message: | cad/test2/button.py: Cadmium version without artifact prevention Surprisingly, this renders much quicker and still doesn't produce any artifacts. |
Files: |
cad/test2/button.py (1 diff) |
Change Details
cad/test2/button.py | ||
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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") |
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