Theaninova/Brick-Monorail
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feat: bezier tracks

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Thea Schöbl
2024-02-25 01:29:27 +01:00
parent 416c3a93aa
commit 369b2bc870
5 changed files with 149 additions and 42 deletions
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135
track.scad
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@@ -1,7 +1,17 @@
include <lib/BOSL/shapes.scad>;
include <lib/BOSL/transforms.scad>;
include <lib/BOSL/constants.scad>;
include <lib/BOSL/beziers.scad>;
include <BOSL2/std.scad>;
include <BOSL2/beziers.scad>;
Type="straight"; // [straight, curve]
// 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]
module __CustomizerLimit__() {}
$LDU=0.4;
@@ -18,10 +28,6 @@ $edgeTolerance=$LDU / 2;
$len = 20;
//translate([28.75, -232, -5.75]) rotate([0, 0, 90]) import("straight.stl");
$baseHeight = $tile;
$baseWidth = 4 * $tile;
@@ -51,12 +57,12 @@ module tooth() {
}
module brickSlot(w=1, l=1, h=3) {
cuboid([$tile * w, $tile * l, $plate * h], align=V_DOWN);
cube([$tile * w, $tile * l, $plate * h], anchor=TOP);
mirror_copy([1, 0, 0])
mirror_copy([0, 1, 0])
translate([$tile / 2, $tile / 2, 0])
cyl(d=$fillet, h=$plate * h, align=V_DOWN, $fn=12);
cuboid([$stud, $stud, $studHeight * 2], align=V_TOP);
cyl(d=$fillet, h=$plate * h, anchor=TOP, $fn=12);
cube([$stud, $stud, $studHeight * 2], anchor=BOTTOM);
}
module endCapStraight() {
@@ -64,44 +70,44 @@ module endCapStraight() {
union() {
difference() {
union() {
cuboid([$width, $tile * 2, $tile], edges=EDGE_BOT_FR+EDGE_BOT_RT+EDGE_BOT_LF);
cube([$width, $tile * 2, $tile], anchor=CENTER);
difference() {
mirror_copy([0, 1, 0])
translate([0, $tile / 2, 0])
cyl(l=$width + $studHeight * 2, d=$stud, orient=ORIENT_X, $fn=24);
cyl(l=$width + $studHeight * 2 + $LDU / 2, d=$stud + $LDU, orient=LEFT, $fn=24);
mirror_copy([1, 0, 0])
translate([$tile * 2, 0, -$stud / 2])
rotate([0, -14, 0])
cuboid([$studHeight * 10, $tile * 4, $LDU * 2], align=V_TOP+V_LEFT);
translate([$tile * 2, 0, -$stud / 2 - 0.2])
rotate([0, -7, 0])
cube([$studHeight * 10, $tile * 4, $LDU], anchor=BOTTOM+RIGHT);
}
translate([$tile, -$tile, 0]) cuboid([8 * $LDU, $LDU, $tile], align=V_RIGHT+V_FRONT);
translate([$tile, -$tile, 0]) cube([8 * $LDU, $LDU, $tile], anchor=LEFT+BACK);
}
// Fingernail slot
mirror_copy([1, 0, 0])
translate([$width / 2, 0, $tile / 2])
cuboid([$LDU, $tile, $LDU])
translate([$plate, $tile / 2, $tile - $LDU]) cube([$LDU, $tile, $LDU]);
translate([$width + $plate - $LDU, $tile / 2, $tile - $LDU]) cube([$LDU, $tile, $LDU]);
// Brick slots
mirror_copy([1, 0, 0])
translate([$tile / 2, -$tile / 2, $tile / 2 - $plate * 2])
brickSlot();
// Bridging improvements
translate([0, 0, $tile / 2 - $plate * 2]) cuboid([$tile * 2, $tile - 4 * $LDU, $LDU], align=V_FRONT);
translate([0, -4 * $LDU, $tile / 2 - $plate * 2]) cuboid([$tile * 2, $stud, $LDU * 2], align=V_FRONT);
translate([0, 0, $tile / 2 - $plate * 2]) cube([$tile * 2, $tile - 4 * $LDU, $LDU], anchor=BACK);
translate([0, -4 * $LDU, $tile / 2 - $plate * 2]) cube([$tile * 2, $stud, $LDU * 2], anchor=BACK);
// Fingernail slot
mirror_copy([1, 0, 0])
translate([$width / 2, 0, $tile / 2])
cube([$LDU * 3, $tile, $LDU * 3], anchor=CENTER)
translate([$plate, $tile / 2, $tile - $LDU]) cube([$LDU, $tile, $LDU]);
translate([$width + $plate - $LDU, $tile / 2, $tile - $LDU]) cube([$LDU, $tile, $LDU]);
// End Slots
translate([-$tile, -$tile, 0]) cuboid([8 * $LDU, $LDU, $tile], align=V_LEFT+V_BACK);
place_copies([[-$tile, -$tile + $LDU], [$tile + 8 * $LDU, -$tile, 0]])
translate([-$tile, -$tile, 0]) cube([8 * $LDU, $LDU, $tile], anchor=RIGHT+FRONT);
move_copies([[-$tile, -$tile + $LDU], [$tile + 8 * $LDU, -$tile, 0]])
mirror_copy([1, 0, 0], cp=[-4 * $LDU, 0, 0])
cyl(d=$fillet, h=$tile, $fn=12);
}
// Rail
translate([0, $teethTolerance / 2, $tile / 2]) cuboid([$teethRailWidth, $tile * 2 - $teethTolerance, $plate], align=V_TOP);
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();
@@ -110,15 +116,66 @@ module endCapStraight() {
}
}
module curve90(r=12) {
translate([r * $tile, $tile, 0]) endCapStraight();
translate([$tile, r * $tile, 0]) rotate(-90) endCapStraight();
//ir = ($r
path = [[2 * $tile, r * $tile, 0], [r * $tile / 2, r * $tile, 0], [r * $tile, r * $tile / 2, 0], [r * $tile, 2 * $tile, 0]];
extrude_2d_shapes_along_bezier(path) {
circle(r=10);
module monorailCurve(p0, p1, p2, resolution=512) {
union() {
/*translate([r * $tile, $tile, 0]) endCapStraight();
translate([$tile, r * $tile, 0]) rotate(-90) endCapStraight();
$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([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();*/
}
}
//curve90();
endCapStraight();
module monorailStraight(l) {
union() {
translate([0, $tile, 0]) endCapStraight();
translate([0, (l - 1) * $tile, 0]) rotate(180) endCapStraight();
if (l > 4) {
translate([0, $tile * 2, 0]) cube([4 * $tile, (l - 4) * $tile, $tile], anchor=FRONT);
translate([0, $tile * 2, $tile / 2]) cube([$teethRailWidth, (l - 4) * $tile, $plate], anchor=BOTTOM+FRONT);
translate([0, $tile * 2, $tile / 2]) group() {
for (i = [0:($teeth * (l - 4) - 1)]) {
translate([0, i * $teethWidth, 0]) tooth();
}
};
}
}
}
if (Type == "straight")
monorailStraight(l=Length);
else if (Type == "curve")
monorailCurve(p0=[0, 0, 0], p1=[5, 40, 0], p2=[80, 80, 0]);
// endCapStraight();
// translate([28.75, -232, -5.75]) rotate([0, 0, 90]) import("straight.stl");