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fix regular_prism to call _cyl_path instead of using repeated code
This commit is contained in:
Adrian Mariano
108
shapes3d.scad
108
shapes3d.scad
@@ -996,94 +996,26 @@ function regular_prism(n,
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assert(is_vector(shift,2), "shift must be a 2D vector.")
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let(
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vnf = any_defined([chamfer, chamfer1, chamfer2, rounding, rounding1, rounding2])
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? assert(is_undef(texture), "Cannot combine roundings or chamfers with texturing")
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let(
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vang = atan2(r1-r2,height),
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_chamf1 = first_defined([chamfer1, if (is_undef(rounding1)) chamfer, 0]),
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_chamf2 = first_defined([chamfer2, if (is_undef(rounding2)) chamfer, 0]),
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_fromend1 = first_defined([from_end1, from_end, false]),
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_fromend2 = first_defined([from_end2, from_end, false]),
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chang1 = first_defined([chamfang1, chamfang, 45+sign(_chamf1)*vang/2]),
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chang2 = first_defined([chamfang2, chamfang, 45-sign(_chamf2)*vang/2]),
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round1 = first_defined([rounding1, if (is_undef(chamfer1)) rounding, 0]),
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round2 = first_defined([rounding2, if (is_undef(chamfer2)) rounding, 0]),
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checks1 =
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assert(is_finite(_chamf1), "chamfer1 must be a finite number if given.")
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assert(is_finite(_chamf2), "chamfer2 must be a finite number if given.")
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assert(is_finite(chang1) && chang1>0, "chamfang1 must be a positive number if given.")
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assert(is_finite(chang2) && chang2>0, "chamfang2 must be a positive number if given.")
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assert(chang1<90+sign(_chamf1)*vang, "chamfang1 must be smaller than the cone face angle")
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assert(chang2<90-sign(_chamf2)*vang, "chamfang2 must be smaller than the cone face angle")
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assert(num_defined([chamfer1,rounding1])<2, "cannot define both chamfer1 and rounding1")
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assert(num_defined([chamfer2,rounding2])<2, "cannot define both chamfer2 and rounding2")
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assert(num_defined([chamfer,rounding])<2, "cannot define both chamfer and rounding")
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undef,
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chamf1r = !_chamf1? 0
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: !_fromend1? _chamf1
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: law_of_sines(a=_chamf1, A=chang1, B=180-chang1-(90-sign(_chamf2)*vang)),
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chamf2r = !_chamf2? 0
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: !_fromend2? _chamf2
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: law_of_sines(a=_chamf2, A=chang2, B=180-chang2-(90+sign(_chamf2)*vang)),
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chamf1l = !_chamf1? 0
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: _fromend1? abs(_chamf1)
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: abs(law_of_sines(a=_chamf1, A=180-chang1-(90-sign(_chamf1)*vang), B=chang1)),
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chamf2l = !_chamf2? 0
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: _fromend2? abs(_chamf2)
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: abs(law_of_sines(a=_chamf2, A=180-chang2-(90+sign(_chamf2)*vang), B=chang2)),
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facelen = adj_ang_to_hyp(height, abs(vang)),
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roundlen1 = round1 >= 0 ? round1/tan(45-vang/2)
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: round1/tan(45+vang/2),
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roundlen2 = round2 >=0 ? round2/tan(45+vang/2)
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: round2/tan(45-vang/2),
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dy1 = abs(_chamf1 ? chamf1l : round1 ? roundlen1 : 0),
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dy2 = abs(_chamf2 ? chamf2l : round2 ? roundlen2 : 0),
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td_ang = teardrop == true? 45 :
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teardrop == false? 90 :
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assert(is_finite(teardrop))
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assert(teardrop>=0 && teardrop<=90)
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teardrop,
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checks2 =
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assert(is_finite(round1), "rounding1 must be a number if given.")
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assert(is_finite(round2), "rounding2 must be a number if given.")
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assert(chamf1r <= r1, "chamfer1 is larger than the r1 radius of the cylinder.")
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assert(chamf2r <= r2, "chamfer2 is larger than the r2 radius of the cylinder.")
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assert(roundlen1 <= r1, "size of rounding1 is larger than the r1 radius of the cylinder.")
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assert(roundlen2 <= r2, "size of rounding2 is larger than the r2 radius of the cylinder.")
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assert(dy1+dy2 <= facelen, "Chamfers/roundings don't fit on the cylinder/cone. They exceed the length of the cylinder/cone face.")
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undef,
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path = [
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[0,-height/2],
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if (!approx(chamf1r,0))
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each [
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[r1, -height/2] + polar_to_xy(chamf1r,180),
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[r1, -height/2] + polar_to_xy(chamf1l,90+vang),
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]
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else if (!approx(round1,0) && td_ang < 90)
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each _teardrop_corner(r=round1, corner=[[max(0,r1-2*roundlen1),-height/2],[r1,-height/2],[r2,height/2]], ang=td_ang)
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else if (!approx(round1,0) && td_ang >= 90)
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each arc(r=abs(round1), corner=[[max(0,r1-2*roundlen1),-height/2],[r1,-height/2],[r2,height/2]])
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else [r1,-height/2],
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if (is_finite(chamf2r) && !approx(chamf2r,0))
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each [
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[r2, height/2] + polar_to_xy(chamf2l,270+vang),
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[r2, height/2] + polar_to_xy(chamf2r,180),
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]
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else if (is_finite(round2) && !approx(round2,0))
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each arc(r=abs(round2), corner=[[r1,-height/2],[r2,height/2],[max(0,r2-2*roundlen2),height/2]])
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else [r2,height/2],
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[0,height/2],
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]
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)
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rotate_sweep(path,caps=true,$fn=n)
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: is_undef(texture) ? cylinder(h=height, r1=r1, r2=r2, center=true, $fn=n)
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: linear_sweep(regular_ngon(n=n,r=r1),scale=r2/r1,height=height,center=true,
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texture=texture, tex_reps=tex_reps, tex_size=tex_size,
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tex_inset=tex_inset, tex_rot=tex_rot,
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tex_depth=tex_depth, tex_samples=tex_samples,
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style=style),
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? assert(is_undef(texture), "Cannot combine roundings or chamfers with texturing")
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let(
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path = [
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[0,-height/2],
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each _cyl_path(r1, r2, height,
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chamfer, chamfer1, chamfer2,
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chamfang, chamfang1, chamfang2,
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rounding, rounding1, rounding2,
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from_end, from_end1, from_end2,
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teardrop),
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[0,height/2]
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]
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)
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rotate_sweep(path,caps=true,$fn=n)
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: is_undef(texture) ? cylinder(h=height, r1=r1, r2=r2, center=true, $fn=n)
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: linear_sweep(regular_ngon(n=n,r=r1),scale=r2/r1,height=height,center=true,
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texture=texture, tex_reps=tex_reps, tex_size=tex_size,
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tex_inset=tex_inset, tex_rot=tex_rot,
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tex_depth=tex_depth, tex_samples=tex_samples,
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style=style),
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skmat = down(height/2) *
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skew(sxz=shift.x/height, syz=shift.y/height) *
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up(height/2) *
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