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Added corner_mask()

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Revar Desmera 2020-02-13 00:30:37 -08:00
parent d765450cc3
commit a3d9c9bdba
3 changed files with 47 additions and 10 deletions
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41
attachments.scad
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@ -464,7 +464,6 @@ module edge_mask(edges=EDGES_ALL, except=[]) {
$attach_anchor = anch;
$attach_norot = true;
$tags = "mask";
length = sum(vmul($parent_size, [for (x=vec) x?0:1]))+0.1;
rotang =
vec.z<0? [90,0,180+vang(point2d(vec))] :
vec.z==0 && sign(vec.x)==sign(vec.y)? 135+vang(point2d(vec)) :
@ -475,6 +474,46 @@ module edge_mask(edges=EDGES_ALL, except=[]) {
}
// Module: corner_mask()
// Usage:
// corner_mask([corners], [except]) ...
// Description:
// Takes a 3D mask shape, and attaches it to the given corners, with the appropriate
// orientation to be `diff()`ed away. The 3D corner mask shape should be designed to
// mask away the X+Y+Z+ octant.
// Arguments:
// corners = Edges to mask. See the docs for [`corners()`](edges.scad#corners) to see acceptable values. Default: All corners.
// except = Edges to explicitly NOT mask. See the docs for [`corners()`](edges.scad#corners) to see acceptable values. Default: No corners.
// Side Effects:
// Sets `$tags = "mask"` for all children.
// Example:
// diff("mask")
// cube(100, center=true)
// corner_mask([TOP,FRONT],LEFT+FRONT+TOP)
// difference() {
// translate(-0.01*[1,1,1]) cube(20);
// translate([20,20,20]) sphere(r=20);
// }
module corner_mask(corners=CORNERS_ALL, except=[]) {
assert($parent_size != undef, "No object to attach to!");
corners = corners(corners, except=except);
vecs = [for (i = [0:7]) if (corners[i]>0) CORNER_OFFSETS[i]];
for (vec = vecs) {
vcount = (vec.x?1:0) + (vec.y?1:0) + (vec.z?1:0);
assert(vcount == 3, "Not an edge vector!");
anch = find_anchor(vec, $parent_size.z, point2d($parent_size), size2=$parent_size2, shift=$parent_shift, offset=$parent_offset, anchors=$parent_anchors, geometry=$parent_geom, two_d=$parent_2d);
$attach_to = undef;
$attach_anchor = anch;
$attach_norot = true;
$tags = "mask";
rotang = vec.z<0?
[ 0,0,180+vang(point2d(vec))-45] :
[180,0,-90+vang(point2d(vec))-45];
translate(anch[1]) rot(rotang) children();
}
}
// Module: tags()
// Usage:
// tags(tags) ...

14
edges.scad
View file

@ -35,7 +35,6 @@
// }
// module corner_cube(size=20, txtsize=3, corners="ALL") {
// corner_set = _corner_set(corners);
// echo(corners=corners, corner_set=corner_set);
// lbl = is_string(corners)? [str("\"",corners,"\"")] : concat(
// corners.z>0? ["TOP"] : corners.z<0? ["BTM"] : [],
// corners.y>0? ["BACK"] : corners.y<0? ["FWD"] : [],
@ -281,7 +280,6 @@ function _corner_set(v) =
str(v, " must be a vector, corner array, or one of ", valid_values)
) v
) :
echo("A", v=v, v2=v2, [for (i=[0:2]) !v[i] || (v[i]==v2[i])])
all([for (i=[0:2]) !v[i] || (v[i]==v2[i])])
)? 1 : 0
];
@ -372,13 +370,13 @@ function _corner_set(v) =
// Example: All corners around the bottom or front faces, except those on the bottom-front edge.
// corners([BOTTOM,FRONT], except=BOTTOM+FRONT)
function corners(v, except=[]) =
(is_string(v) || is_corner_array(v))? corners([v], except=except) :
(is_string(except) || is_corner_array(except))? corners(v, except=[except]) :
(is_string(v) || is_vector(v) || is_corner_array(v))? corners([v], except=except) :
(is_string(except) || is_vector(except) || is_corner_array(except))? corners(v, except=[except]) :
except==[]? normalize_corners(sum([for (x=v) _corner_set(x)])) :
normalize_corners(
normalize_corners(sum([for (x=v) _corner_set(x)])) -
sum([for (x=except) _corner_set(x)])
);
let(
a = normalize_corners(sum([for (x=v) _corner_set(x)])),
b = normalize_corners(sum([for (x=except) _corner_set(x)]))
) normalize_corners(a - b);
CORNER_OFFSETS = [ // Array of XYZ offsets to each corner.

2
version.scad
View file

@ -8,7 +8,7 @@
//////////////////////////////////////////////////////////////////////
BOSL_VERSION = [2,0,122];
BOSL_VERSION = [2,0,123];
// Section: BOSL Library Version Functions