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catear_headband v0.2

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user 2024-01-05 14:15:54 +01:00
parent f7ca17bdad
commit 71f594f9da
1 changed files with 93 additions and 1 deletions
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94
pressfit_headband.scad
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@ -18,6 +18,61 @@ module testblock_recepticle() {
}
}
module catear(height, thickness, fractal=0, side_len=30, bend_factor=0.5, stretch_factor=1.2, debug=false) {
$A=[0, side_len/2];
$B=[0,-side_len/2];
$C=[-(side_len/2/sin(120))*1.5*stretch_factor, 0];
$c=sqrt(pow($A.x-$B.x, 2)+pow($A.y-$B.y, 2));
$b=sqrt(pow($A.x-$C.x, 2)+pow($A.y-$C.y, 2));
$a=sqrt(pow($C.x-$B.x, 2)+pow($C.y-$B.y, 2));
$hc=-$C.x;
$alpha=asin($hc/$b);
$beta=$alpha;
$gamma=180-$alpha-$beta;
$delta=180*bend_factor;
$bend_radius=$a/(2*cos(90-$delta/2));
$bend_offset=$bend_radius*sin(90-$delta/2);
translate([0, -$c/2, 0])
rotate($beta, [0, 0, 1])
translate([0, $a/2, 0])
translate([$bend_offset, 0, 0])
color("#00ffff") partial_ring(
part=$delta/360,
radius=$bend_radius,
thickness=thickness,
height=height
);
translate([0, $c/2, 0])
rotate(-$alpha, [0, 0, 1])
translate([0, -$b/2, 0])
translate([$bend_offset, 0, 0])
color("#ff00ff") partial_ring(
part=$delta/360,
radius=$bend_radius,
thickness=thickness,
height=height
);
translate($A) color("#aaaaaa") cylinder(h=height, d=thickness, center=true);
translate($B) color("#bbbbbb") cylinder(h=height, d=thickness, center=true);
translate($C) color("#cccccc") cylinder(h=height, d=thickness, center=true);
if (debug) {
echo("A", $A, "a", $a, "alpha", $alpha);
echo("B", $B, "b", $b, "beta ", $beta);
echo("C", $C, "c", $c, "gamma", $gamma);
echo("bend_factor", bend_factor);
echo("delta:", $delta);
echo("bend_radius", $bend_radius);
echo("bend_offset", $bend_offset);
color("#000000") cylinder(h=4, d=4);
translate($C/2) color("red") cube([$hc, thickness, height*1.1], center=true);
color("red") cube([thickness, $c, height*1.1], center=true);
color("red")translate([0, $c/2, 0]) rotate(-$alpha, [0, 0, 1]) translate([0, -$b/2, 0]) cube([thickness, $b, height*1.1], center=true);
color("red")translate([0, -$c/2, 0]) rotate($beta, [0, 0, 1]) translate([0, $a/2, 0]) cube([thickness, $a, height*1.1], center=true);
}
}
module partial_ring(part, radius, thickness, height) {
rotate(180-180*part, [0, 0, 1])
rotate_extrude(angle=360*part)
@ -92,4 +147,41 @@ module pressfit_headband(size=60, height=4.6, thickness=3, part=0.7, stretch_len
};
}
pressfit_headband();
module catear_headband(debug=false, size=60, height=4.6, thickness=3, part=0.7, stretch_len=40, tip_len=0.1, tip_bend=20, rake_depth=0.5, rake_width=0.5, rake_stretch=.5, ear_scale=1, ear_bend_factor=0.15, ear_stretch_factor=1.4, ear_angle=48) {
union() {
rotate( ear_angle, [0, 0, 1]) {
translate([-size, 0, 0]) catear(
debug=debug,
height=height,
thickness=thickness,
side_len=size/2*ear_scale,
bend_factor=ear_bend_factor,
stretch_factor=ear_stretch_factor
);
}
rotate(-ear_angle, [0, 0, 1]) {
translate([-size, 0, 0]) catear(
debug=false,
height=height,
thickness=thickness,
side_len=size/2*ear_scale,
bend_factor=ear_bend_factor,
stretch_factor=ear_stretch_factor
);
}
headband(
size=size,
height=height,
thickness=thickness,
part=part,
stretch_len=stretch_len,
tip_len=tip_len,
tip_bend=tip_bend,
rake_depth=rake_depth,
rake_width=rake_width,
rake_stretch=rake_stretch
);
};
}
catear_headband();