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Add "is" to geometry.scad predicates

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This commit is contained in:
Adrian Mariano
2021-09-15 19:01:34 -04:00
parent ea7b947bcb
commit d78eb5213e
8 changed files with 105 additions and 132 deletions
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8
paths.scad
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@@ -121,7 +121,7 @@ function simplify_path(path, eps=EPSILON) =
indices = [
0,
for (i=[1:1:len(path)-2])
if (!collinear(path[i-1], path[i], path[i+1], eps=eps)) i,
if (!is_collinear(path[i-1], path[i], path[i+1], eps=eps)) i,
len(path)-1
]
) [for (i=indices) path[i]];
@@ -148,7 +148,7 @@ function simplify_path_indexed(points, indices, eps=EPSILON) =
i1 = indices[i-1],
i2 = indices[i],
i3 = indices[i+1]
) if (!collinear(points[i1], points[i2], points[i3], eps=eps))
) if (!is_collinear(points[i1], points[i2], points[i3], eps=eps))
indices[i]
],
indices[len(indices)-1]
@@ -604,7 +604,7 @@ function path_add_jitter(path, dist=1/512, closed=true) =
path[0],
for (i=idx(path,s=1,e=closed?-1:-2)) let(
n = line_normal([path[i-1],path[i]])
) path[i] + n * (collinear(select(path,i-1,i+1))? (dist * ((i%2)*2-1)) : 0),
) path[i] + n * (is_collinear(select(path,i-1,i+1))? (dist * ((i%2)*2-1)) : 0),
if (!closed) last(path)
];
@@ -1004,7 +1004,7 @@ function _path_cuts_normals(path, cuts, dirs, closed=false) =
// to define the plane of the path.
function _path_plane(path, ind, i,closed) =
i<(closed?-1:0) ? undef :
!collinear(path[ind],path[ind-1], select(path,i))?
!is_collinear(path[ind],path[ind-1], select(path,i))?
[select(path,i)-path[ind-1],path[ind]-path[ind-1]] :
_path_plane(path, ind, i-1);