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142 lines
3.5 KiB
Python
Executable File
142 lines
3.5 KiB
Python
Executable File
#!/usr/bin/python
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# all dimensions are mm
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from cadmium import *
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but_top_x = 10.0
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but_top_y = but_top_x+5.0
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but_top_z = 1.5
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but_corner_r = 2.0
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but_base_border = 1.0
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but_base_x = but_top_x+2*but_base_border
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but_base_y = but_top_y+2*but_base_border
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but_base_z = 0.5
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but_fillet_r = 0.4
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but_chamfer_r = 0.2
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# ----- Helper elements for fillets -------------------------------------------
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def fillet_line(x, r):
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s = Box(x, r, r)
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s -= Cylinder(r, h = x). \
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rotate(Y_axis, 90). \
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translate(0, r, r)
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return s.translate(-x/2, 0, 0)
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def fillet_circle(r, fillet_r):
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return Cylinder(r+fillet_r, h = fillet_r)- \
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Torus(r+fillet_r, fillet_r, center = True). \
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translate(0, 0, fillet_r)
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# ----- Helper elements for chamfers ------------------------------------------
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def chamfer_line (x, r):
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s = Box(x, r, r)
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s -= Cylinder(r, h = x). \
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rotate(Y_axis, 90)
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return s.translate(-x/2, -r, -r)
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def chamfer_circle(r, fillet_r):
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return Box(2*(r), 2*(r), fillet_r). \
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translate(-r, -r, -fillet_r)- \
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Cylinder(r-fillet_r, h = fillet_r). \
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translate(0, 0, -fillet_r)- \
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Torus(r-fillet_r, fillet_r, center = True). \
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translate(0, 0, -fillet_r)
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# ----- Box with rounded corners ----------------------------------------------
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def rbox_core(x, y, z, r):
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return Box(x-2*r, y, z, center = True).translate(0, 0, z/2)+ \
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Box(x, y-2*r, z, center = True).translate(0, 0, z/2)
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def rbox(x, y, z, r):
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s = rbox_core(x, y, z, r)
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for dx in [-1, 1]:
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for dy in [-1, 1]:
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s += Cylinder(r, h = z). \
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translate(dx*(x/2-r), dy*(y/2-r), 0)
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return s
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def rbox_fillet_bottom(x, y, z, r, fillet_r):
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s = None
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for a in [0, 180]:
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t = fillet_line(x-2*r, fillet_r). \
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translate(0, y/2, 0). \
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rotate(Z_axis, a)
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if s is None:
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s = t
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else:
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s += t
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s += fillet_line(y-2*r, fillet_r). \
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translate(0, x/2, 0). \
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rotate(Z_axis, a+90)
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for dx in [-1, 1]:
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for dy in [-1, 1]:
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s += fillet_circle(r, fillet_r). \
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translate(dx*(x/2-r), dy*(y/2-r), 0)
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return s
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def rbox_chamfer_top_corners(x, y, z, r, chamfer_r):
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s = None
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for dx in [-1, 1]:
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for dy in [-1, 1]:
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t = chamfer_circle(r, chamfer_r). \
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translate(dx*(x/2-r), dy*(y/2-r), z)
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if s is None:
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s = t
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else:
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s += t
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return s-rbox_core(x, y, z, r)
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def rbox_chamfer_top(x, y, z, r, chamfer_r):
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s = rbox_chamfer_top_corners(x, y, z, r, chamfer_r)
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for a in [0, 180]:
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s += chamfer_line(x-2*r, chamfer_r). \
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translate(0, y/2, z). \
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rotate(Z_axis, a)
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s += chamfer_line(y-2*r, chamfer_r). \
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translate(0, x/2, z). \
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rotate(Z_axis, a+90)
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return s
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def rbox_chamfer_bottom(x, y, z, r, chamfer_r):
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return rbox_chamfer_top(x, y, z, r, chamfer_r). \
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translate(0, 0, -z). \
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rotate(X_axis, 180)
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# ----- Button ----------------------------------------------------------------
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def button_top():
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return rbox(but_top_x, but_top_y, but_top_z, but_corner_r)- \
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rbox_chamfer_top(but_top_x, but_top_y, but_top_z, \
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but_corner_r, but_chamfer_r)+ \
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rbox_fillet_bottom(but_top_x, but_top_y, but_top_z, but_corner_r,
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but_fillet_r)
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def button_base():
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s = rbox(but_base_x, but_base_y, but_base_z, but_corner_r)- \
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rbox_chamfer_top(but_base_x, but_base_y, but_base_z, \
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but_corner_r, but_chamfer_r)- \
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rbox_chamfer_bottom(but_base_x, but_base_y, but_base_z, \
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but_corner_r, but_chamfer_r)
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return s.translate(0, 0, -but_base_z)
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def button():
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return button_top()+button_base()
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b = button()
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b.toSTL("button.stl")
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