Refactor CFTubes neck to EllipticalNeck

This commit is contained in:
Luke Hubmayer-Werner 2025-01-26 16:02:07 +10:30
parent afaca9a9b0
commit 650b03816f
2 changed files with 131 additions and 129 deletions

View File

@ -6,6 +6,7 @@ include <CFTubes/common.scad>
// Choose your material by only including one of the below // Choose your material by only including one of the below
// include <CFTubes/PLA.scad> // include <CFTubes/PLA.scad>
include <CFTubes/PETG.scad> include <CFTubes/PETG.scad>
include <EllipticalNeck.scad>
// Guitar_Scale_Length_mm = 610; // millimetres, slightly over 24inch (609.6mm) Jaguar scale, should be fine for guitar and u-bass // Guitar_Scale_Length_mm = 610; // millimetres, slightly over 24inch (609.6mm) Jaguar scale, should be fine for guitar and u-bass
// assert(fret_scale_length(0) == 610); // Make sure the function correctly uses our changed global // assert(fret_scale_length(0) == 610); // Make sure the function correctly uses our changed global
@ -20,135 +21,6 @@ fret_inlays = [[3, "真"], [5, "尊"], [7, "正"], [9, "清"], [12, "評判"], [
// ShinKaiYaku65 22 23 // ShinKaiYaku65 22 23
// //
module neck(string_spacing=18, string_margin=4.5, num_strings=3, target_neck_thickness=15, target_neck_thickness_additional_points=[], scallop_depth=3, num_frets=24, fret_width=2.4, filler=false, inlays_only=false, side_markers_only=false, fret_layers_only=false, remove_fret_layers=false, engrave_markers=true) {
fw2 = fret_width/2;
neck_length = fret_scale_length(0)+fw2;
neck_width = (num_strings-1)*string_spacing + string_margin*2;
module neck_stock() {
angle_excess = asin((scallop_depth+fw2)/target_neck_thickness);
a0 = 90-angle_excess;
a1 = 270+angle_excess;
rotate([-90, 0, 0])
if (len(target_neck_thickness_additional_points) < 1) {
linear_extrude(neck_length)
polygon([for (i = [0:300]) let(a=lerp(a0, a1, i/300.0)) [neck_width*0.5*sin(a), -target_neck_thickness*cos(a)]]); // Ellipse
} else {
pts = flatten([[[neck_length, target_neck_thickness]], target_neck_thickness_additional_points]);
echo(pts);
for (i = [0:len(pts)-2]) {
pt0 = pts[i];
pt1 = pts[i+1];
echo(i, pt0, pt1);
render() hull() {
translate([0,0,pt0[0]]) linear_extrude(0.01)
polygon([for (i = [0:300]) let(a=lerp(a0, a1, i/300.0)) [neck_width*0.5*sin(a), -pt0[1]*cos(a)]]); // Ellipse
translate([0,0,pt1[0]]) linear_extrude(0.01)
polygon([for (i = [0:300]) let(a=lerp(a0, a1, i/300.0)) [neck_width*0.5*sin(a), -pt1[1]*cos(a)]]); // Ellipse
}
}
}
}
module scallop(fret) {
x0 = fret_scale_length(fret-1) - fw2;
x1 = fret_scale_length(fret) + fw2;
xmid = lerp(x0, x1, 0.5);
// Radius it?
arc = arc_points([[x0, scallop_depth], [x1, scallop_depth], [xmid, 0]]);
// echo(arc);
rotate([90, 0, 90]) linear_extrude(neck_width, center=true) polygon(arc);
}
module scallops() {
for (fret = [0:num_frets]) {
scallop(fret);
}
}
module fret_bumps() {
for (fret = [0:num_frets]) {
translate([0, fret_scale_length(fret), scallop_depth])
rotate([0, 90]) cylinder(d=fret_width, h = neck_width, center = true, $fn=200);
}
}
module intersect_fret_layers() {
for (fret = [0:num_frets]) {
translate([-500, fret_scale_length(fret)-fret_width/2, -500])
cube([1000, fret_width, 1000]);
}
// Some precision error with fret 0 :/
translate([-500, fret_scale_length(0)-fret_width/2+0.0006, -500])
cube([1000, fret_width, 1000]);
}
module fret_inlays() {
for (num_text = fret_inlays) {
fret = num_text[0];
if (fret <= num_frets) {
x0 = fret_scale_length(fret-1);
x1 = fret_scale_length(fret);
diff = x0 - x1;
translate([0, lerp(x0, x1, 0.5), -0.5])
linear_extrude(30)
text(text = num_text[1], font = JP_Sans_Font, halign = "center", valign = "center", size = clamp(2, diff-fret_width*2-2, 10));
}
}
}
module fret_side_markers() {
for (num_text = fret_inlays) {
fret = num_text[0];
if (fret <= num_frets) {
x0 = fret_scale_length(fret-1);
x1 = fret_scale_length(fret);
diff = x0 - x1;
mid = lerp(x0, x1, 0.67);
rotate([0, -94, 0])
translate([0, mid, neck_width/2-3])
linear_extrude(50)
rotate(-37)
text(text = str(fret), font = JP_Serif_Font, halign = "right", valign = "center", size = 5);
}
}
}
module carved_stock() {
render() difference() {
neck_stock();
scallops();
scallop(num_frets+1);
// Chop off anything above the frets
translate([-neck_width, 0, scallop_depth]) cube([neck_width*2, Guitar_Scale_Length_mm*3, target_neck_thickness*3]);
// Reduce rest of the body to 0
translate([-neck_width, 0, 0]) cube([neck_width*2, (fret_scale_length(num_frets)+fret_scale_length(num_frets+1))/2, target_neck_thickness*3]);
}
intersection() {
fret_bumps();
neck_stock();
}
}
if (filler) { // Somewhat placeholder for now
difference() {
neck_stock();
scallop(25);
translate([-neck_width, 0, scallop_depth]) cube([neck_width*2, Guitar_Scale_Length_mm*3, target_neck_thickness*3]);
translate([-neck_width, 0, 0]) cube([neck_width*2, (fret_scale_length(25)+fret_scale_length(24))/2, target_neck_thickness*3]);
}
} else {
render() intersection() {
difference() {
carved_stock();
if (engrave_markers) {
fret_inlays();
fret_side_markers();
}
if (remove_fret_layers) intersect_fret_layers();
}
if (fret_layers_only || inlays_only || side_markers_only) union() {
if (fret_layers_only) intersect_fret_layers();
if (inlays_only) fret_inlays();
if (side_markers_only) fret_side_markers();
}
}
}
}
module tailpiece(string_spacing=18, string_margin=4.5, num_strings=3, target_neck_thickness=15, scallop_depth=3, fret_width=2.4*6) { module tailpiece(string_spacing=18, string_margin=4.5, num_strings=3, target_neck_thickness=15, scallop_depth=3, fret_width=2.4*6) {
fw2 = fret_width/2; fw2 = fret_width/2;
neck_length = 84; neck_length = 84;

130
EllipticalNeck.scad Normal file
View File

@ -0,0 +1,130 @@
// Include after common.scad
module neck(string_spacing=18, string_margin=4.5, num_strings=3, target_neck_thickness=15, target_neck_thickness_additional_points=[], scallop_depth=3, num_frets=24, fret_width=2.4, filler=false, inlays_only=false, side_markers_only=false, fret_layers_only=false, remove_fret_layers=false, engrave_markers=true) {
fw2 = fret_width/2;
neck_length = fret_scale_length(0)+fw2;
neck_width = (num_strings-1)*string_spacing + string_margin*2;
module neck_stock() {
angle_excess = asin((scallop_depth+fw2)/target_neck_thickness);
a0 = 90-angle_excess;
a1 = 270+angle_excess;
rotate([-90, 0, 0])
if (len(target_neck_thickness_additional_points) < 1) {
linear_extrude(neck_length)
polygon([for (i = [0:300]) let(a=lerp(a0, a1, i/300.0)) [neck_width*0.5*sin(a), -target_neck_thickness*cos(a)]]); // Ellipse
} else {
pts = flatten([[[neck_length, target_neck_thickness]], target_neck_thickness_additional_points]);
echo(pts);
for (i = [0:len(pts)-2]) {
pt0 = pts[i];
pt1 = pts[i+1];
echo(i, pt0, pt1);
render() hull() {
translate([0,0,pt0[0]]) linear_extrude(0.01)
polygon([for (i = [0:300]) let(a=lerp(a0, a1, i/300.0)) [neck_width*0.5*sin(a), -pt0[1]*cos(a)]]); // Ellipse
translate([0,0,pt1[0]]) linear_extrude(0.01)
polygon([for (i = [0:300]) let(a=lerp(a0, a1, i/300.0)) [neck_width*0.5*sin(a), -pt1[1]*cos(a)]]); // Ellipse
}
}
}
}
module scallop(fret) {
x0 = fret_scale_length(fret-1) - fw2;
x1 = fret_scale_length(fret) + fw2;
xmid = lerp(x0, x1, 0.5);
// Radius it?
arc = arc_points([[x0, scallop_depth], [x1, scallop_depth], [xmid, 0]]);
// echo(arc);
rotate([90, 0, 90]) linear_extrude(neck_width, center=true) polygon(arc);
}
module scallops() {
for (fret = [0:num_frets]) {
scallop(fret);
}
}
module fret_bumps() {
for (fret = [0:num_frets]) {
translate([0, fret_scale_length(fret), scallop_depth])
rotate([0, 90]) cylinder(d=fret_width, h = neck_width, center = true, $fn=200);
}
}
module intersect_fret_layers() {
for (fret = [0:num_frets]) {
translate([-500, fret_scale_length(fret)-fret_width/2, -500])
cube([1000, fret_width, 1000]);
}
// Some precision error with fret 0 :/
translate([-500, fret_scale_length(0)-fret_width/2+0.0006, -500])
cube([1000, fret_width, 1000]);
}
module fret_inlays() {
for (num_text = fret_inlays) {
fret = num_text[0];
if (fret <= num_frets) {
x0 = fret_scale_length(fret-1);
x1 = fret_scale_length(fret);
diff = x0 - x1;
translate([0, lerp(x0, x1, 0.5), -0.5])
linear_extrude(30)
text(text = num_text[1], font = JP_Sans_Font, halign = "center", valign = "center", size = clamp(2, diff-fret_width*2-2, 10));
}
}
}
module fret_side_markers() {
for (num_text = fret_inlays) {
fret = num_text[0];
if (fret <= num_frets) {
x0 = fret_scale_length(fret-1);
x1 = fret_scale_length(fret);
diff = x0 - x1;
mid = lerp(x0, x1, 0.67);
rotate([0, -94, 0])
translate([0, mid, neck_width/2-3])
linear_extrude(50)
rotate(-37)
text(text = str(fret), font = JP_Serif_Font, halign = "right", valign = "center", size = 5);
}
}
}
module carved_stock() {
render() difference() {
neck_stock();
scallops();
scallop(num_frets+1);
// Chop off anything above the frets
translate([-neck_width, 0, scallop_depth]) cube([neck_width*2, Guitar_Scale_Length_mm*3, target_neck_thickness*3]);
// Reduce rest of the body to 0
translate([-neck_width, 0, 0]) cube([neck_width*2, (fret_scale_length(num_frets)+fret_scale_length(num_frets+1))/2, target_neck_thickness*3]);
}
intersection() {
fret_bumps();
neck_stock();
}
}
if (filler) { // Somewhat placeholder for now
difference() {
neck_stock();
scallop(25);
translate([-neck_width, 0, scallop_depth]) cube([neck_width*2, Guitar_Scale_Length_mm*3, target_neck_thickness*3]);
translate([-neck_width, 0, 0]) cube([neck_width*2, (fret_scale_length(25)+fret_scale_length(24))/2, target_neck_thickness*3]);
}
} else {
render() intersection() {
difference() {
carved_stock();
if (engrave_markers) {
fret_inlays();
fret_side_markers();
}
if (remove_fret_layers) intersect_fret_layers();
}
if (fret_layers_only || inlays_only || side_markers_only) union() {
if (fret_layers_only) intersect_fret_layers();
if (inlays_only) fret_inlays();
if (side_markers_only) fret_side_markers();
}
}
}
}