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misc tweaks

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This commit is contained in:
Adrian Mariano
2021-11-09 22:27:55 -05:00
parent 22847597b1
commit a81b6c6931
14 changed files with 242 additions and 339 deletions
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81
shapes2d.scad
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@@ -224,12 +224,14 @@ module circle(r, d, anchor=CENTER, spin=0) {
// Topics: Shapes (2D), Paths (2D), Path Generators, Attachable
// See Also: circle()
// Description:
// When called as a module, creates a 2D polygon that approximates a circle of the given size.
// When called as a function, returns a 2D list of points (path) for a polygon that approximates a circle of the given size.
// When called as a module, creates a 2D polygon that approximates a circle or ellipse of the given size.
// When called as a function, returns a 2D list of points (path) for a polygon that approximates a circle or ellipse of the given size.
// Note that the point list or shape is the same as the one you would get by scaling the output of {{circle()}}, but with this module your
// attachments to the oval will
// Arguments:
// r = Radius of the circle/oval to create. Can be a scalar, or a list of sizes per axis.
// r = Radius of the circle or pair of semiaxes of oval
// ---
// d = Diameter of the circle/oval to create. Can be a scalar, or a list of sizes per axis.
// d = Diameter of the circle or a pair giving the full X and Y axis lengths.
// realign = If true, rotates the polygon that approximates the circle/oval by half of one size.
// circum = If true, the polygon that approximates the circle will be upsized slightly to circumscribe the theoretical circle. If false, it inscribes the theoretical circle. Default: false
// anchor = Translate so anchor point is at origin (0,0,0). See [anchor](attachments.scad#anchor). Default: `CENTER`
@@ -246,6 +248,7 @@ module circle(r, d, anchor=CENTER, spin=0) {
// path = oval(d=50, anchor=FRONT, spin=45);
module oval(r, d, realign=false, circum=false, anchor=CENTER, spin=0) {
r = get_radius(r=r, d=d, dflt=1);
dummy = assert((is_finite(r) || is_vector(r,2)) && all_positive(r), "Invalid radius or diameter for oval");
sides = segs(max(r));
sc = circum? (1 / cos(180/sides)) : 1;
rx = default(r[0],r) * sc;
@@ -1710,76 +1713,6 @@ function mask2d_ogee(pattern, excess=0.01, anchor=CENTER, spin=0) =
// Section: Debugging polygons
// Module: debug_polygon()
// Usage:
// debug_polygon(points, paths, [convexity=], [size=]);
// Description:
// A drop-in replacement for `polygon()` that renders and labels the path points.
// Arguments:
// points = The array of 2D polygon vertices.
// paths = The path connections between the vertices.
// ---
// convexity = The max number of walls a ray can pass through the given polygon paths.
// size = The base size of the line and labels.
// Example(Big2D):
// debug_polygon(
// points=concat(
// regular_ngon(or=10, n=8),
// regular_ngon(or=8, n=8)
// ),
// paths=[
// [for (i=[0:7]) i],
// [for (i=[15:-1:8]) i]
// ]
// );
module debug_polygon(points, paths, convexity=2, size=1)
{
paths = is_undef(paths)? [[for (i=[0:1:len(points)-1]) i]] :
is_num(paths[0])? [paths] :
paths;
echo(points=points);
echo(paths=paths);
linear_extrude(height=0.01, convexity=convexity, center=true) {
polygon(points=points, paths=paths, convexity=convexity);
}
for (i = [0:1:len(points)-1]) {
color("red") {
up(0.2) {
translate(points[i]) {
linear_extrude(height=0.1, convexity=10, center=true) {
text(text=str(i), size=size, halign="center", valign="center");
}
}
}
}
}
for (j = [0:1:len(paths)-1]) {
path = paths[j];
translate(points[path[0]]) {
color("cyan") up(0.1) cylinder(d=size*1.5, h=0.01, center=false, $fn=12);
}
translate(points[path[len(path)-1]]) {
color("pink") up(0.11) cylinder(d=size*1.5, h=0.01, center=false, $fn=4);
}
for (i = [0:1:len(path)-1]) {
midpt = (points[path[i]] + points[path[(i+1)%len(path)]])/2;
color("blue") {
up(0.2) {
translate(midpt) {
linear_extrude(height=0.1, convexity=10, center=true) {
text(text=str(chr(65+j),i), size=size/2, halign="center", valign="center");
}
}
}
}
}
}
}
// vim: expandtab tabstop=4 shiftwidth=4 softtabstop=4 nowrap