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Implement Issue #2. Added diameter alternates for most radius options.

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Garth Minette
2020-08-26 20:39:45 -07:00
parent 1d318ebc38
commit dba5aab918
8 changed files with 89 additions and 55 deletions
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16
paths.scad
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@@ -418,7 +418,7 @@ function path_torsion(path, closed=false) =
// scale = [X,Y] scaling factors for each axis. Default: `[1,1]`
// Example(3D):
// trace_polyline(path3d_spiral(turns=2.5, h=100, n=24, r=50), N=1, showpts=true);
function path3d_spiral(turns=3, h=100, n=12, r=undef, d=undef, cp=[0,0], scale=[1,1]) = let(
function path3d_spiral(turns=3, h=100, n=12, r, d, cp=[0,0], scale=[1,1]) = let(
rr=get_radius(r=r, d=d, dflt=100),
cnt=floor(turns*n),
dz=h/cnt
@@ -774,15 +774,19 @@ function assemble_path_fragments(fragments, eps=EPSILON, _finished=[]) =
// Module: modulated_circle()
// Usage:
// modulated_circle(r|d, sines);
// Description:
// Creates a 2D polygon circle, modulated by one or more superimposed sine waves.
// Arguments:
// r = radius of the base circle.
// r = Radius of the base circle. Default: 40
// d = Diameter of the base circle.
// sines = array of [amplitude, frequency] pairs, where the frequency is the number of times the cycle repeats around the circle.
// Example(2D):
// modulated_circle(r=40, sines=[[3, 11], [1, 31]], $fn=6);
module modulated_circle(r=40, sines=[10])
module modulated_circle(r, sines=[10], d)
{
r = get_radius(r=r, d=d, dflt=40);
freqs = len(sines)>0? [for (i=sines) i[1]] : [5];
points = [
for (a = [0 : (360/segs(r)/max(freqs)) : 360])
@@ -829,7 +833,8 @@ module extrude_from_to(pt1, pt2, convexity=undef, twist=undef, scale=undef, slic
// Arguments:
// polyline = Array of points of a polyline path, to be extruded.
// h = height of the spiral to extrude along.
// r = radius of the spiral to extrude along.
// r = Radius of the spiral to extrude along. Default: 50
// d = Diameter of the spiral to extrude along.
// twist = number of degrees of rotation to spiral up along height.
// anchor = Translate so anchor point is at origin (0,0,0). See [anchor](attachments.scad#anchor). Default: `CENTER`
// spin = Rotate this many degrees around the Z axis after anchor. See [spin](attachments.scad#spin). Default: `0`
@@ -838,7 +843,8 @@ module extrude_from_to(pt1, pt2, convexity=undef, twist=undef, scale=undef, slic
// Example:
// poly = [[-10,0], [-3,-5], [3,-5], [10,0], [0,-30]];
// spiral_sweep(poly, h=200, r=50, twist=1080, $fn=36);
module spiral_sweep(polyline, h, r, twist=360, center, anchor, spin=0, orient=UP) {
module spiral_sweep(polyline, h, r, twist=360, center, d, anchor, spin=0, orient=UP) {
r = get_radius(r=r, d=d, dflt=50);
polyline = path3d(polyline);
pline_count = len(polyline);
steps = ceil(segs(r)*(twist/360));