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tweaked vac example in turtle3d

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added delete_last() to arrays.scad
added endpoint= option to arc
added tests for last two things
This commit is contained in:
Adrian Mariano
2020-12-12 21:15:33 -05:00
parent 424f5db97c
commit b82f1b8e5d
5 changed files with 34 additions and 5 deletions
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10
shapes2d.scad
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@@ -350,7 +350,7 @@ module stroke(
// N = Number of vertices to form the arc curve from.
// r = Radius of the arc.
// d = Diameter of the arc.
// angle = If a scalar, specifies the end angle in degrees. If a vector of two scalars, specifies start and end angles.
// angle = If a scalar, specifies the end angle in degrees (relative to start parameter). If a vector of two scalars, specifies start and end angles.
// cp = Centerpoint of arc.
// points = Points on the arc.
// long = if given with cp and points takes the long arc instead of the default short arc. Default: false
@@ -360,6 +360,7 @@ module stroke(
// thickness = If given with `width`, arc starts and ends on X axis, to make a circle segment.
// start = Start angle of arc.
// wedge = If true, include centerpoint `cp` in output to form pie slice shape.
// endpoint = If false exclude the last point (function only). Default: true
// Examples(2D):
// arc(N=4, r=30, angle=30, wedge=true);
// arc(r=30, angle=30, wedge=true);
@@ -378,7 +379,10 @@ module stroke(
// Example(FlatSpin):
// path = arc(points=[[0,30,0],[0,0,30],[30,0,0]]);
// trace_path(path, showpts=true, color="cyan");
function arc(N, r, angle, d, cp, points, width, thickness, start, wedge=false, long=false, cw=false, ccw=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) :
// First try for 2D arc specified by width and thickness
is_def(width) && is_def(thickness)? (
assert(!any_defined([r,cp,points]) && !any([cw,ccw,long]),"Conflicting or invalid parameters to arc")
@@ -472,7 +476,7 @@ function _normal_segment(p1,p2) =
// Function: turtle()
// Usage:
// turtle(commands, [state], [full_state], [repeat])
// turtle(commands, [state], [full_state], [repeat], [endpoint])
// Description:
// Use a sequence of turtle graphics commands to generate a path. The parameter `commands` is a list of
// turtle commands and optional parameters for each command. The turtle state has a position, movement direction,