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remove spurious union() calls in some examples

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This commit is contained in:
Adrian Mariano 2023-02-17 15:00:57 -05:00
parent 710a09c9b4
commit f2acb6b21a
1 changed files with 6 additions and 9 deletions
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@ -367,14 +367,14 @@ function ycopies(spacing, n, l, sp, p=_NO_ARG) =
// Example: Cubic sphere packing
// s = 20;
// s2 = s * sin(45);
// zcopies(s2,n=8) union()
// zcopies(s2,n=8)
// grid_copies([s2,s2],n=8,stagger=($idx%2)? true : "alt")
// sphere(d=s);
// Example: Hexagonal sphere packing
// s = 20;
// xyr = adj_ang_to_hyp(s/2,30);
// h = hyp_adj_to_opp(s,xyr);
// zcopies(h,n=8) union()
// zcopies(h,n=8)
// back(($idx%2)*xyr*cos(60))
// grid_copies(s,n=[12,7],stagger=($idx%2)? "alt" : true)
// sphere(d=s);
@ -613,18 +613,15 @@ function line_copies(spacing, n, l, p1, p2, p=_NO_ARG) =
// color(($row+$col)%2?"black":"red")
// cube([8,8,0.01], center=false);
//
// Example:
// // Makes a grid of hexagon pillars whose tops are all
// // angled to reflect light at [0,0,50], if they were shiny.
// Example: Makes a grid of hexagon pillars whose tops are all angled to reflect light at [0,0,50], if they were shiny.
// hexregion = circle(r=50.01,$fn=6);
// grid_copies(spacing=10, stagger=true, inside=hexregion) union() {
// // Note: The union() is needed or else $pos will be
// // inexplicably unreadable.
// grid_copies(spacing=10, stagger=true, inside=hexregion)
// union() { // Needed for OpenSCAD 2021.01 as noted above
// ref_v = (unit([0,0,50]-point3d($pos)) + UP)/2;
// half_of(v=-ref_v, cp=[0,0,5])
// zrot(180/6)
// cylinder(h=20, d=10/cos(180/6)+0.01, $fn=6);
// }
// }
module grid2d(spacing, n, size, stagger=false, inside=undef, nonzero)
{