Theaninova/Brick-Monorail
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feat: improvements

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Thea Schöbl
2024-02-25 12:16:18 +01:00
parent 369b2bc870
commit 52f6ce437c
2 changed files with 70 additions and 72 deletions
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116
track.scad
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@@ -1,15 +1,19 @@
include <BOSL2/std.scad>;
include <BOSL2/beziers.scad>;
Type="straight"; // [straight, curve]
// Enable built-in support for 3d printing
Support=true;
// Supports are generated with respect to the layer height
LayerHeight=0.2; // [0.05,0.1,0.2]
// Only applies to straight tracks
Length=8; // [4:1:56]
// Only applies to curves
Radius=28; // [4:1:36]
// The angle at which the curve starts
StartAngle=0; // [0:15:360]
// The angle at which the curve ends
EndAngle=45; // [0:15:360]
// The angle at the y- axis
StartAngle=45; // [0:15:90]
// The angle at the y+ axis
EndAngle=0; // [0:15:90]
module __CustomizerLimit__() {}
@@ -65,23 +69,26 @@ module brickSlot(w=1, l=1, h=3) {
cube([$stud, $stud, $studHeight * 2], anchor=BOTTOM);
}
module endCapStraight() {
module endCapStraight(includeRail=true) {
$width = $baseWidth - $plate * 2;
union() {
difference() {
union() {
cube([$width, $tile * 2, $tile], anchor=CENTER);
difference() {
mirror_copy([0, 1, 0])
translate([0, $tile / 2, 0])
cyl(l=$width + $studHeight * 2 + $LDU / 2, d=$stud + $LDU, orient=LEFT, $fn=24);
mirror_copy([1, 0, 0])
translate([$tile * 2, 0, -$stud / 2 - 0.2])
rotate([0, -7, 0])
cube([$studHeight * 10, $tile * 4, $LDU], anchor=BOTTOM+RIGHT);
}
mirror_copy([0, 1, 0])
translate([0, $tile / 2, 0])
cyl(l=$width + $studHeight * 2 + $LDU / 2, d=$stud, orient=LEFT, $fn=24);
translate([$tile, -$tile, 0]) cube([8 * $LDU, $LDU, $tile], anchor=LEFT+BACK);
if (Support) {
mirror_copy([1, 0, 0]) difference() {
translate([$tile * 2 - $studHeight, 0, -$tile / 2]) cube([$LDU * 3, $tile * 2 - $LDU - 2, $LDU * 6], anchor=BOTTOM+RIGHT);
mirror_copy([0, 1, 0])
translate([0, $tile / 2, 0])
cyl(l=$width + $studHeight * 2 + $LDU / 2, d=$stud + LayerHeight * 2, orient=LEFT, $fn=24);
}
}
}
// Brick slots
mirror_copy([1, 0, 0])
@@ -106,53 +113,41 @@ module endCapStraight() {
cyl(d=$fillet, h=$tile, $fn=12);
}
// Rail
translate([0, $teethTolerance / 2, $tile / 2]) cuboid([$teethRailWidth, $tile * 2 - $teethTolerance, $plate], anchor=BOTTOM);
translate([0, -$tile, $tile / 2]) group() {
for (i = [0:(2 * $teeth - 1)]) {
translate([0, i * $teethWidth, 0]) tooth();
}
};
if (includeRail) {
// Rail
translate([0, $teethTolerance / 2, $tile / 2]) cuboid([$teethRailWidth, $tile * 2 - $teethTolerance, $plate], anchor=BOTTOM);
translate([0, -$tile, $tile / 2]) group() {
for (i = [0:(2 * $teeth - 1)]) {
translate([0, i * $teethWidth, 0]) tooth();
}
};
}
}
}
module monorailCurve(p0, p1, p2, resolution=512) {
union() {
/*translate([r * $tile, $tile, 0]) endCapStraight();
translate([$tile, r * $tile, 0]) rotate(-90) endCapStraight();
module monorailCurve(r=28, sa, ea, p1) {
$n_teeth = round((PI * r * $tile) / (360 / abs(-sa - ea)));
angle = [180 - ea, 180 + sa];
points = arc($n_teeth, r=(r * $tile), angle=angle);
$radius = (r - 2) * $tile;*/
bez = [p0, p1, p2];
debug_bezier(bez, N=len(bez)-1);
$n_teeth = round(bezier_length(bez) / $tile * $teeth);
echo($n_teeth);
$points = bezier_curve(bez, $n_teeth);
translate($points[0]) rot(from=[0, 1, 0], to=bezier_tangent(bez, 0)) fwd($tile) endCapStraight();
translate($points[len($points) - 1]) rot(from=[0, -1, 0], to=bezier_tangent(bez, 1)) fwd($tile) endCapStraight();
path_sweep([
[-$teethRailWidth / 2, $tile / 2 + $plate],
[-$teethRailWidth / 2, $tile / 2],
[-2 * $tile, $tile / 2],
[-2 * $tile, -$tile / 2],
[2 * $tile, -$tile / 2],
[2 * $tile, $tile / 2],
[$teethRailWidth / 2, $tile / 2],
[$teethRailWidth / 2, $tile / 2 + $plate],
], $points, tangent=bezier_tangent(bez, [0:1/$n_teeth:1]));
translate([0, 0, $tile / 2]) path_copies($points, n=$n_teeth) rotate([-90, 90, 0]) tooth();
//extrude_2d_shapes_along_bezier(path) square([4 * $tile, $tile]);
/*translate([2 * $tile, 2 * $tile]) intersection() {
arced_slot(r=$radius, h=$tile, sd=4 * $tile, sa=sa, ea=ea, $fn=resolution);
translate([r * $tile, 0, 0]) union() {
translate(points[0]) rot(180 - ea) back($tile) endCapStraight(includeRail=false);
translate(points[len(points) - 1]) rot(sa) back($tile) endCapStraight(includeRail=false);
difference() {
path_sweep([
[-$teethRailWidth / 2, $tile / 2 + $plate],
[-$teethRailWidth / 2, $tile / 2],
[-2 * $tile, $tile / 2],
[-2 * $tile, -$tile / 2],
[2 * $tile, -$tile / 2],
[2 * $tile, $tile / 2],
[$teethRailWidth / 2, $tile / 2],
[$teethRailWidth / 2, $tile / 2 + $plate],
], points);
translate(points[0]) rot(-ea) cube([$tile * 6, $tile * 4, $tile], anchor=CENTER);
translate(points[len(points) - 1]) rot(sa) cube([$tile * 6, $tile * 4, $tile], anchor=CENTER);
}
translate([2 * $tile, 2 * $tile, $tile / 2])
arced_slot($radius, h=$plate, sd=$teethRailWidth, align=V_TOP, sa=sa, ea=ea, $fn=resolution);
translate([2 * $tile, 2 * $tile, $tile / 2])
arc_of(n = round(((PI * $radius) / (180 / (ea - sa))) / $tile * $teeth), r=(r - 2) * $tile, rot=true, sa=sa, ea=ea, $fn=resolution)
tooth();*/
translate([0, 0, $tile / 2]) arc_copies($n_teeth, r=(r * $tile), sa=angle[0], ea=angle[1]) tooth();
}
}
@@ -172,10 +167,11 @@ module monorailStraight(l) {
}
}
if (Type == "straight")
if (EndAngle == 0 && StartAngle == 0)
monorailStraight(l=Length);
else if (Type == "curve")
monorailCurve(p0=[0, 0, 0], p1=[5, 40, 0], p2=[80, 80, 0]);
else
monorailCurve(Radius, sa=StartAngle, ea=EndAngle);
// endCapStraight();
// translate([28.75, -232, -5.75]) rotate([0, 0, 90]) import("straight.stl");
//translate([28.75, -232, -5.75]) rotate([0, 0, 90]) import("4dbrix_curve.stl");