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Various documentation fixes.

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Garth Minette
2021-12-06 14:28:04 -08:00
parent 0e99908440
commit 21083277b0
7 changed files with 99 additions and 55 deletions
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14
regions.scad
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@@ -288,7 +288,7 @@ function force_region(poly) = is_path(poly) ? [poly] : poly;
// anchor = Translate so anchor point is at origin (0,0,0). See [anchor](attachments.scad#anchor). Default: `"origin"`
// spin = Rotate this many degrees after anchor. See [spin](attachments.scad#spin). Default: `0`
// cp = Centerpoint for determining intersection anchors or centering the shape. Determintes the base of the anchor vector. Can be "centroid", "mean", "box" or a 2D point. Default: "centroid"
// atype = Set to "hull" or "intersect to select anchor type. Default: "hull"
// atype = Set to "hull" or "intersect" to select anchor type. Default: "hull"
// Example(2D): Displaying a region
// region([circle(d=50), square(25,center=true)]);
// Example(2D): Displaying a list of polygons that intersect each other, which is not a region
@@ -328,10 +328,14 @@ module region(r, anchor="origin", spin=0, cp="centroid", atype="hull")
// point = The point to test.
// region = The region to test against, as a list of polygon paths.
// eps = Acceptable variance. Default: `EPSILON` (1e-9)
// Example(2D,NoAxes): Green points are in the region, red ones are outside
// region = [for(i=[2:8]) hexagon(r=i)];
// region(region);
// for(x=[-4.5:4.5],y=[-4.5:4.5]) color(point_in_region([x,y],region)==1?"green":"red") move([x,y])circle(r=.1,$fn=12);
// Example(2D,Med): Red points are in the region.
// region = [for(i=[2:4:10]) hexagon(r=i)];
// color("#ff7") region(region);
// for(x=[-10:10], y=[-10:10])
// if (point_in_region([x,y], region)>=0)
// move([x,y]) color("red") circle(0.15, $fn=12);
// else
// move([x,y]) color("#ddf") circle(0.1, $fn=12);
function point_in_region(point, region, eps=EPSILON) =
let(region=force_region(region))
assert(is_region(region), "Region given to point_in_region is not a region")