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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