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add fast option to hull_points and tweak docs

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This commit is contained in:
Adrian Mariano 2022-02-01 22:45:37 -05:00
parent 19abb5d2c3
commit 68d911618b
1 changed files with 5 additions and 2 deletions
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7
shapes3d.scad
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@ -1665,7 +1665,9 @@ function sphere(r, d, circum=false, style="orig", anchor=CENTER, spin=0, orient=
// a new polyhedron whose vertices are obtained from the faces of the parent polyhedron.
// The "orig" and "align" forms are duals of each other. If you request a circumscribing polyhedron in
// these styles then the polyhedron will look the same as the default inscribing form. But for the other
// styles, the duals are completely different from their parents, and from each other.
// styles, the duals are completely different from their parents, and from each other. Generation of the circumscribed versions (duals)
// for "octa" and "icosa" is fast if you use the module form but can be very slow (several minutes) if you use the functional
// form and choose a large $fn value.
// Arguments:
// r = Radius of the spheroid.
// style = The style of the spheroid's construction. One of "orig", "aligned", "stagger", "octa", or "icosa". Default: "aligned"
@ -1741,7 +1743,7 @@ module spheroid(r, style="aligned", d, circum=false, dual=false, anchor=CENTER,
else if (circum && (style=="octa" || style=="icosa")) {
orig_sphere = spheroid(r,style,circum=false);
dualvert = _dual_vertices(orig_sphere);
hull_points(dualvert);
hull_points(dualvert,fast=true);
} else {
vnf = spheroid(r=r, circum=circum, style=style);
vnf_polyhedron(vnf, convexity=2);
@ -1769,6 +1771,7 @@ function _dual_vertices(vnf) =
function spheroid(r, style="aligned", d, circum=false, anchor=CENTER, spin=0, orient=UP) =
let(
ff=echo("running sphereoid with ",circum=circum),
r = get_radius(r=r, d=d, dflt=1),
hsides = segs(r),
vsides = max(2,ceil(hsides/2)),