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unit() now asserts error for zero-length vector unless dflt= arg is given.

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Garth Minette
2020-07-10 00:03:55 -07:00
parent a0d8c0a5c3
commit dde616dad5
5 changed files with 53 additions and 45 deletions
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24
shapes2d.scad
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@@ -237,8 +237,8 @@ module stroke(
} else {
quatsums = Q_Cumulative([
for (i = idx(path2,end=-2)) let(
vec1 = i==0? UP : unit(path2[i]-path2[i-1]),
vec2 = unit(path2[i+1]-path2[i]),
vec1 = i==0? UP : unit(path2[i]-path2[i-1], UP),
vec2 = unit(path2[i+1]-path2[i], UP),
axis = vector_axis(vec1,vec2),
ang = vector_angle(vec1,vec2)
) Quat(axis,ang)
@@ -961,8 +961,8 @@ function regular_ngon(n=6, r, d, or, od, ir, id, side, rounding=0, realign=false
tipp = polar_to_xy(r-inset+rounding,a1),
pos = (p1+p2)/2
) each [
anchorpt(str("tip",i), tipp, unit(tipp), 0),
anchorpt(str("side",i), pos, unit(pos), 0),
anchorpt(str("tip",i), tipp, unit(tipp,BACK), 0),
anchorpt(str("side",i), pos, unit(pos,BACK), 0),
]
]
) reorient(anchor,spin, two_d=true, path=path, extent=false, p=path, anchors=anchors);
@@ -983,8 +983,8 @@ module regular_ngon(n=6, r, d, or, od, ir, id, side, rounding=0, realign=false,
tipp = polar_to_xy(r-inset+rounding,a1),
pos = (p1+p2)/2
) each [
anchorpt(str("tip",i), tipp, unit(tipp), 0),
anchorpt(str("side",i), pos, unit(pos), 0),
anchorpt(str("tip",i), tipp, unit(tipp,BACK), 0),
anchorpt(str("side",i), pos, unit(pos,BACK), 0),
]
];
attachable(anchor,spin, two_d=true, path=path, extent=false, anchors=anchors) {
@@ -1332,9 +1332,9 @@ function star(n, r, d, or, od, ir, id, step, realign=false, anchor=CENTER, spin=
p3 = polar_to_xy(r,a3),
pos = (p1+p3)/2
) each [
anchorpt(str("tip",i), p1, unit(p1), 0),
anchorpt(str("corner",i), p2, unit(p2), 0),
anchorpt(str("midpt",i), pos, unit(pos), 0),
anchorpt(str("tip",i), p1, unit(p1,BACK), 0),
anchorpt(str("corner",i), p2, unit(p2,BACK), 0),
anchorpt(str("midpt",i), pos, unit(pos,BACK), 0),
]
]
) reorient(anchor,spin, two_d=true, path=path, p=path, anchors=anchors);
@@ -1355,9 +1355,9 @@ module star(n, r, d, or, od, ir, id, step, realign=false, anchor=CENTER, spin=0)
p3 = polar_to_xy(r,a3),
pos = (p1+p3)/2
) each [
anchorpt(str("tip",i), p1, unit(p1), 0),
anchorpt(str("corner",i), p2, unit(p2), 0),
anchorpt(str("midpt",i), pos, unit(pos), 0),
anchorpt(str("tip",i), p1, unit(p1,BACK), 0),
anchorpt(str("corner",i), p2, unit(p2,BACK), 0),
anchorpt(str("midpt",i), pos, unit(pos,BACK), 0),
]
];
attachable(anchor,spin, two_d=true, path=path, anchors=anchors) {