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Added downcyl(). Improved rcylinder() to accept r/d/r1/r2/d1/d2 args.

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Revar Desmera 2019-01-29 16:38:02 -08:00
parent 783c70a417
commit 1576db5843
1 changed files with 42 additions and 11 deletions
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53
shapes.scad
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@ -214,6 +214,27 @@ module rcube(size=[1,1,1], r=0.25, center=false)
}
// Creates a cylinder with its top face centered at the origin.
// h = height of cylinder. (Default: 1.0)
// r = radius of cylinder. (Default: 1.0)
// r1 = optional bottom radius of cylinder. (Default: 1.0)
// r2 = optional top radius of cylinder. (Default: 1.0)
// d = optional diameter of cylinder. (use instead of r)
// Example:
// downcyl(r=10, h=50);
// downcyl(r1=15, r2=5, h=45);
// downcyl(d=15, h=40);
module downcyl(d=1, h=1, d1=undef, d2=undef, r=undef, r1=undef, r2=undef)
{
r1 = d1!=undef? d1/2 : (r1!=undef? r1 : (r!=undef? r : d/2));
r2 = d2!=undef? d2/2 : (r2!=undef? r2 : (r!=undef? r : d/2));
down(h/2) {
cylinder(r1=r1, r2=r2, h=h, center=true);
}
}
// Creates a cylinder with chamferred (bevelled) edges.
// h = height of cylinder. (Default: 1.0)
// r = radius of cylinder. (Default: 1.0)
@ -261,25 +282,35 @@ module chamf_cyl(h=1, r=1, d=undef, chamfer=0.25, chamfedge=undef, angle=45, cen
// fillet = radius of the edge filleting. (Default: 0.25)
// center = boolean. If true, cylinder is centered. (Default: false)
// Example:
// rcylinder(h=50, r=20, fillet=5, center=true, $fa=1, $fs=1);
module rcylinder(h=1, r=1, d=undef, fillet=0.25, center=false)
// rcylinder(h=50, r1=20, r2=30, fillet=5, center=true);
// rcylinder(h=50, r=20, fillet=5, center=true);
module rcylinder(h=1, r=1, r1=undef, r2=undef, d=undef, d1=undef, d2=undef, fillet=0.25, center=false)
{
d = (d == undef)? r * 2.0 : d;
dh = d - 2*fillet;
hh = h - 2*fillet;
r1 = d1!=undef? d1/2 : (r1!=undef? r1 : (d!=undef? d/2 : r));
r2 = d2!=undef? d2/2 : (r2!=undef? r2 : (d!=undef? d/2 : r));
u = fillet/h;
rr1 = (r1+(r2-r1)*u);
rr2 = (r1+(r2-r1)*(1-u));
yy = h/2 - fillet;
up(center? 0 : h/2) {
rotate_extrude(angle=360, convexity=2) {
difference() {
hull() {
right(d/2-fillet) {
yspread(h-2*fillet) {
circle(r=fillet, $fn=quantup(segs(fillet), 4));
right(rr1-fillet) {
difference() {
fwd(yy) circle(r=fillet, $fn=quantup(segs(fillet), 4));
back(fillet) square(2*fillet, center=true);
}
}
right(d/2/2) square(size=[d/2, h-fillet*2], center=true);
right((d/2-fillet)/2) square(size=[d/2-fillet, h], center=true);
right(rr2-fillet) {
difference() {
back(yy) circle(r=fillet, $fn=quantup(segs(fillet), 4));
fwd(fillet) square(2*fillet, center=true);
}
}
right(0.01/2) square([0.01, h], center=true);
}
left(d/2) square([d, h+1], center=true);
left(max(rr1,rr2)/2) square([max(rr1, rr2), h+1], center=true);
}
}
}