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assorted doc fixes

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eliminate trace_path
_path_self_intersections fix
This commit is contained in:
Adrian Mariano
2021-10-06 21:16:39 -04:00
parent 1147e181c5
commit bb77faa0c9
8 changed files with 142 additions and 135 deletions
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54
drawing.scad
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@@ -561,54 +561,6 @@ module dashed_stroke(path, dashpat=[3,3], width=1, closed=false) {
// Module: trace_path()
// Usage:
// trace_path(path, [closed=], [showpts=], [N=], [size=], [color=]);
// Description:
// Renders lines between each point of a path.
// Can also optionally show the individual vertex points.
// Arguments:
// path = The list of points in the path.
// ---
// closed = If true, draw the segment from the last vertex to the first. Default: false
// showpts = If true, draw vertices and control points.
// N = Mark the first and every Nth vertex after in a different color and shape.
// size = Diameter of the lines drawn.
// color = Color to draw the lines (but not vertices) in.
// Example(FlatSpin,VPD=44.4):
// path = [for (a=[0:30:210]) 10*[cos(a), sin(a), sin(a)]];
// trace_path(path, showpts=true, size=0.5, color="lightgreen");
module trace_path(path, closed=false, showpts=false, N=1, size=1, color="yellow") {
assert(is_path(path),"Invalid path argument");
sides = segs(size/2);
path = closed? close_path(path) : path;
if (showpts) {
for (i = [0:1:len(path)-1]) {
translate(path[i]) {
if (i % N == 0) {
color("blue") sphere(d=size*2.5, $fn=8);
} else {
color("red") {
cylinder(d=size/2, h=size*3, center=true, $fn=8);
xrot(90) cylinder(d=size/2, h=size*3, center=true, $fn=8);
yrot(90) cylinder(d=size/2, h=size*3, center=true, $fn=8);
}
}
}
}
}
if (N!=3) {
color(color) stroke(path3d(path), width=size, $fn=8);
} else {
for (i = [0:1:len(path)-2]) {
if (N != 3 || (i % N) != 1) {
color(color) extrude_from_to(path[i], path[i+1]) circle(d=size, $fn=sides);
}
}
}
}
// Section: Computing paths
// Function&Module: arc()
@@ -661,7 +613,7 @@ module trace_path(path, closed=false, showpts=false, N=1, size=1, color="yellow"
// stroke(closed=true, path);
// Example(FlatSpin,VPD=175):
// path = arc(points=[[0,30,0],[0,0,30],[30,0,0]]);
// trace_path(path, showpts=true, color="cyan");
// stroke(path, dots=true, dots_color="blue");
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")
@@ -774,9 +726,9 @@ module arc(N, r, angle, d, cp, points, width, thickness, start, wedge=false)
// d1 = Diameter of bottom of helix
// d2 = Diameter of top of helix
// Example(3D):
// trace_path(helix(turns=2.5, h=100, r=50), N=1, showpts=true);
// stroke(helix(turns=2.5, h=100, r=50), dots=true, dots_color="blue");
// Example(3D): Helix that turns the other way
// trace_path(helix(turns=-2.5, h=100, r=50), N=1, showpts=true);
// stroke(helix(turns=-2.5, h=100, r=50), dots=true, dots_color="blue");
// Example(3D): Flat helix (note points are still 3d)
// stroke(helix(h=0,r1=50,r2=25,l=0, turns=4));
function helix(l,h,turns,angle, r, r1, r2, d, d1, d2)=