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Replace most trivial uses of slice() with faster list_head() and list_tail()

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Garth Minette
2021-03-25 00:23:36 -07:00
parent e9e3616861
commit d7cb503ffc
10 changed files with 112 additions and 51 deletions
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6
shapes2d.scad
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@@ -533,7 +533,7 @@ module dashed_stroke(path, dashpat=[3,3], width=1, closed=false) {
function arc(N, r, angle, d, cp, points, width, thickness, start, wedge=false, long=false, cw=false, ccw=false, endpoint=true) =
assert(is_bool(endpoint))
!endpoint ? assert(!wedge, "endpoint cannot be false if wedge is true")
slice(arc(N,r,angle,d,cp,points,width,thickness,start,wedge,long,cw,ccw,true),0,-2) :
list_head(arc(N,r,angle,d,cp,points,width,thickness,start,wedge,long,cw,ccw,true)) :
assert(is_undef(N) || is_integer(N), "Number of points must be an integer")
// First try for 2D arc specified by width and thickness
is_def(width) && is_def(thickness)? (
@@ -851,7 +851,7 @@ function _turtle_command(command, parm, parm2, state, index) =
)
list_set(
state, [path,step], [
concat(state[path], slice(arcpath,1,-1)),
concat(state[path], list_tail(arcpath)),
rot(lrsign * myangle,p=state[step],planar=true)
]
) :
@@ -877,7 +877,7 @@ function _turtle_command(command, parm, parm2, state, index) =
)
list_set(
state, [path,step], [
concat(state[path], slice(arcpath,1,-1)),
concat(state[path], list_tail(arcpath)),
rot(delta_angle,p=state[step],planar=true)
]
) :