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add sparse_cuboid plus doc fixes

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This commit is contained in:
Adrian Mariano 2024-05-12 21:09:44 -04:00
parent a43b9097df
commit bd21bac004
2 changed files with 89 additions and 21 deletions
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33
masks3d.scad
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@ -249,20 +249,6 @@ module chamfer_cylinder_mask(r, chamfer, d, ang=45, from_end=false, anchor=CENTE
// rounding_edge_mask(l=p.z, r=25);
// }
// }
// Example: Acute angle
// ang=60;
// difference() {
// pie_slice(ang=ang, h=50, r=100);
// zflip_copy(z=25)
// #rounding_corner_mask(r=20, ang=ang);
// }
// Example: Obtuse angle
// ang=120;
// difference() {
// pie_slice(ang=ang, h=50, r=30);
// zflip_copy(z=25)
// #rounding_corner_mask(r=20, ang=ang);
// }
function rounding_edge_mask(l, r, ang=90, r1, r2, d, d1, d2, excess=0.1, anchor=CENTER, spin=0, orient=UP, h,height,length) = no_function("rounding_edge_mask");
module rounding_edge_mask(l, r, ang=90, r1, r2, excess=0.01, d1, d2,d,r,length, h, height, anchor=CENTER, spin=0, orient=UP,
@ -274,7 +260,7 @@ module rounding_edge_mask(l, r, ang=90, r1, r2, excess=0.01, d1, d2,d,r,length,
dummy = assert(all_nonnegative([r1,r2]), "radius/diameter value(s) must be nonnegative")
assert(all_positive([length]), "length/l/h/height must be a positive value")
assert(is_finite(ang) && ang>0 && ang<180, "ang must be a number between 0 and 180");
steps = ceil(segs(r)*(180-ang)/360);
steps = ceil(segs(max(r1,r2))*(180-ang)/360);
function make_path(r) =
let(
arc = r==0 ? repeat([0,0],steps+1)
@ -383,8 +369,21 @@ module rounding_edge_mask(l, r, ang=90, r1, r2, excess=0.01, d1, d2,d,r,length,
// corner_mask(TOP)
// #rounding_corner_mask(r=20);
// }
// Example: Acute angle mask
//
// Example(VPR=[71.8,0,345.8],VPT=[57.0174,43.8496,24.5863],VPD=263.435,NoScales): Acute angle
// ang=60;
// difference() {
// pie_slice(ang=ang, h=50, r=100);
// zflip_copy(z=25)
// #rounding_corner_mask(r=20, ang=ang);
// }
// Example(VPR=[62.7,0,5.4],VPT=[6.9671,22.7592,20.7513],VPD=192.044): Obtuse angle
// ang=120;
// difference() {
// pie_slice(ang=ang, h=50, r=30);
// zflip_copy(z=25)
// #rounding_corner_mask(r=20, ang=ang);
// }
function rounding_corner_mask(r, ang, d, style="octa", excess=0.1, anchor=CENTER, spin=0, orient=UP) = no_function("rounding_corner_mask");
module rounding_corner_mask(r, ang=90, d, style="octa", excess=0.1, anchor=CENTER, spin=0, orient=UP)
{

77
walls.scad
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@ -16,7 +16,7 @@
// Synopsis: Makes an open cross-braced rectangular wall.
// SynTags: Geom
// Topics: FDM Optimized, Walls
// See Also: sparse_wall(), corrugated_wall(), thinning_wall(), thinning_triangle(), narrowing_strut()
// See Also: corrugated_wall(), thinning_wall(), thinning_triangle(), narrowing_strut()
//
// Usage:
// sparse_wall(h, l, thick, [maxang=], [strut=], [max_bridge=]) [ATTACHMENTS];
@ -30,9 +30,9 @@
// l = length of strut wall.
// thick = thickness of strut wall.
// ---
// maxang = maximum overhang angle of cross-braces.
// strut = the width of the cross-braces.
// max_bridge = maximum bridging distance between cross-braces.
// maxang = maximum overhang angle of cross-braces, measured down from vertical. Default: 30
// strut = the width of the cross-braces. Default: 5
// max_bridge = maximum bridging distance between cross-braces. Default: 20
// anchor = Translate so anchor point is at origin (0,0,0). See [anchor](attachments.scad#subsection-anchor). Default: `CENTER`
// spin = Rotate this many degrees around the Z axis after anchor. See [spin](attachments.scad#subsection-spin). Default: `0`
// orient = Vector to rotate top towards, after spin. See [orient](attachments.scad#subsection-orient). Default: `UP`
@ -87,6 +87,75 @@ module sparse_wall(h=50, l=100, thick=4, maxang=30, strut=5, max_bridge=20, anch
}
// Module: sparse_cuboid()
// Synopsis: Makes an open cross-braced cuboid
// SynTags: Geom
// Topics: FDM Optimized, Walls
// See Also: sparse_wall(), corrugated_wall(), thinning_wall(), thinning_triangle(), narrowing_strut(), cuboid()
// Usage:
// sparse_cuboid(size, [dir], [maxang=], [struct=]
// Description:
// Makes an open rectangular cuboid with X-shaped cross-bracing to reduce the need for material in 3d printing.
// The direction of the cross bracing can be aligned with the X, Y or Z axis. This module can be
// used as a drop-in replacement for {{cuboid()}} if you belatedly decide that your model would benefit from
// the sparse construction.
// Arguments:
// size = The size of sparse wall, a number or length 3 vector.
// dir = direction of holes through the cuboid, must be a vector parallel to the X, Y or Z axes, or one of "X", "Y" or "Z". Default: "Y"
// ---
// maxang = maximum overhang angle of cross-braces, measured down from vertical. Default: 30
// strut = the width of the cross-braces. Default: 5
// max_bridge = maximum bridging distance between cross-braces. Default: 20
// chamfer = Size of chamfer, inset from sides. Default: No chamfering.
// rounding = Radius of the edge rounding. Default: No rounding.
// edges = Edges to mask. See [Specifying Edges](attachments.scad#section-specifying-edges). Default: all edges.
// except = Edges to explicitly NOT mask. See [Specifying Edges](attachments.scad#section-specifying-edges). Default: No edges.
// trimcorners = If true, rounds or chamfers corners where three chamfered/rounded edges meet. Default: `true`
// teardrop = If given as a number, rounding around the bottom edge of the cuboid won't exceed this many degrees from vertical. If true, the limit angle is 45 degrees. Default: `false`
// anchor = Translate so anchor point is at origin (0,0,0). See [anchor](attachments.scad#subsection-anchor). Default: `CENTER`
// spin = Rotate this many degrees around the Z axis. See [spin](attachments.scad#subsection-spin). Default: `0`
// orient = Vector to rotate top towards. See [orient](attachments.scad#subsection-orient). Default: `UP`
// Examples:
// sparse_cuboid([10,20,30], strut=1);
// sparse_cuboid([10,20,30], "Y", strut=1);
// sparse_cuboid([10,20,30], UP, strut=1);
// sparse_cuboid(30, FWD, strut=2, rounding=2);
module sparse_cuboid(size, dir=RIGHT, strut=5, maxang=30, max_bridge=20,
chamfer,
rounding,
edges=EDGES_ALL,
except=[],
except_edges,
trimcorners=true,
teardrop=false,
anchor=CENTER, spin=0, orient=UP)
{
size = scalar_vec3(size);
dummy1=assert(in_list(dir,["X","Y","Z"]) || is_vector(dir,3), "dir must be a 3-vector or one of \"X\", \"Y\", or \"Z\"");
count = len([for(d=dir) if (d!=0) d]);
dummy2=assert(is_string(dir) || (count==1 && len(dir)<=3), "vector valued dir must have exactly one non-zero component");
dir = is_string(dir) ? dir
: dir.x ? "X"
: dir.y ? "Y"
: "Z";
attachable(anchor,spin,orient,size=size){
intersection(){
if (dir=="X")
sparse_wall(size.z,size.y,size.x,strut=strut,maxang=maxang, max_bridge=max_bridge);
else if (dir=="Y")
zrot(90)
sparse_wall(size.z,size.x,size.y,strut=strut,maxang=maxang, max_bridge=max_bridge);
else
yrot(90)
sparse_wall(size.x,size.y,size.z,strut=strut,maxang=maxang, max_bridge=max_bridge);
cuboid(size=size, chamfer=chamfer, rounding=rounding,edges=edges, except=except, except_edges=except_edges,
trimcorners=trimcorners, teardrop=teardrop);
}
children();
}
}
// Module: corrugated_wall()
// Synopsis: Makes a corrugated rectangular wall.
// SynTags: Geom