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Removed redundant path_cut_segs()

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Garth Minette
2021-03-06 02:54:03 -08:00
parent 532e95ae66
commit b2001ecadf
1 changed files with 12 additions and 43 deletions
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55
paths.scad
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@@ -1217,49 +1217,11 @@ module path_spread(path, n, spacing, sp=undef, rotate_children=true, closed=fals
} }
} }
// Function: path_cut_segs()
// Usage:
// segs = path_cut_segs(path, cutlens, <closed=>);
// Topics: Paths
// See Also: path_cut_points()
// Description:
// Given a path and a list of path lengths at which to cut, returns a list of
// sub-paths cut from the original path at those path lengths.
// Arguments:
// path = The original path to split.
// cutlens = The list of path lengths to cut at.
// closed = If true, treat the path as a closed polygon.
// Example(2D):
// path = circle(d=100);
// segs = path_cut_segs(path, [50, 200], closed=true);
// rainbow(segs) stroke($item);
function path_cut_segs(path,cutlens,closed=false) =
let(
path = closed? close_path(path) : path,
cutlist = path_cut_points(path, cutlens),
cuts = len(cutlist)
) [
concat(
select(path,0,cutlist[0][1]-1),
[cutlist[0][0]]
),
for(i=[0:cuts-2]) concat(
[cutlist[i][0]],
slice(path, cutlist[i][1], cutlist[i+1][1]),
[cutlist[i+1][0]]
),
concat(
[cutlist[cuts-1][0]],
select(path, cutlist[cuts-1][1], -1)
)
];
// Function: path_cut_points() // Function: path_cut_points()
// //
// Usage: // Usage:
// path_cut_points(path, dists, [closed], [direction]) // cuts = path_cut_points(path, dists, <closed=>, <direction=>);
// //
// Description: // Description:
// Cuts a path at a list of distances from the first point in the path. Returns a list of the cut // Cuts a path at a list of distances from the first point in the path. Returns a list of the cut
@@ -1280,6 +1242,7 @@ function path_cut_segs(path,cutlens,closed=false) =
// Arguments: // Arguments:
// path = path to cut // path = path to cut
// dists = distances where the path should be cut (a list) or a scalar single distance // dists = distances where the path should be cut (a list) or a scalar single distance
// ---
// closed = set to true if the curve is closed. Default: false // closed = set to true if the curve is closed. Default: false
// direction = set to true to return direction vectors. Default: false // direction = set to true to return direction vectors. Default: false
// //
@@ -1372,8 +1335,10 @@ function _path_cuts_dir(path, cuts, closed=false, eps=1e-2) =
// Function: path_cut_segs() // Function: path_cut_segs()
// Topics: Paths
// See Also: path_cut_points()
// Usage: // Usage:
// path_list = path_cut_segs(path, cutdist, <closed>); // path_list = path_cut_segs(path, cutdist, <closed=>);
// Description: // Description:
// Given a list of distances in `cutdist`, cut the path into // Given a list of distances in `cutdist`, cut the path into
// subpaths at those lengths, returning a list of paths. // subpaths at those lengths, returning a list of paths.
@@ -1382,9 +1347,13 @@ function _path_cuts_dir(path, cuts, closed=false, eps=1e-2) =
// in ascending order. If you repeat a distance you will get an // in ascending order. If you repeat a distance you will get an
// empty list in that position in the output. // empty list in that position in the output.
// Arguments: // Arguments:
// path = path to cut // path = The original path to split.
// cutdist = distance or list of distances where path is cut // cutdist = Distance or list of distances where path is cut
// closed = set to true for a closed path. Default: false // closed = If true, treat the path as a closed polygon.
// Example(2D):
// path = circle(d=100);
// segs = path_cut_segs(path, [50, 200], closed=true);
// rainbow(segs) stroke($item);
function path_cut_segs(path,cutdist,closed) = function path_cut_segs(path,cutdist,closed) =
is_num(cutdist) ? path_cut_segs(path,[cutdist],closed) : is_num(cutdist) ? path_cut_segs(path,[cutdist],closed) :
assert(is_vector(cutdist)) assert(is_vector(cutdist))