GuitarModels/T-riple.scad

include <common.scad>
include <AluTCommon.scad>

semitone_strings = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "X", "XI"];
octave_strings = ["", "˙", "¨", "¯"];
octave_scales = [1.1, 1, 0.9, 0.8];

z_resolution = $preview ? 0.5 : 0.1;
profile_arc_steps = $preview ? 10 : 180;
// $fn = $preview ? 32 : 512;
// mink_fn = $preview ? 12 : 128;
// mink_fn_2d = $preview ? 32 : 256;
// $fn = 32;
// mink_fn = 12;
// mink_fn_2d = 32;

fret_width = 2.4; //2.8;  // Jumbo = 0.11", 0.055" tall
zero_fret_width = fret_width*1.5;
zero_fret_extra_height = 1.2;
fret_angle = 60; //Fret angle of 45° is normal, anything over 60 will not work correctly
tube_radius = Cap_Spine + T_circumcenter[0];
standard_profile_center_x = T_circumcenter[0];


module tube(from_fret, to_fret, scale_offset = 0, fingerboard_min_thick = 2.5, fingerboard_max_thick = 5) {

	function fsl(fret_number) = fret_scale_length(fret_number + scale_offset);
	// z_min = (fsl(to_fret) + fsl(to_fret+1))/2;
	// z_max = (fsl(from_fret) + fsl(from_fret-1))/2;
	z_min = fsl(to_fret) - fret_width/2;
	z_max = fsl(from_fret) + zero_fret_width/2;
	z_offset = z_min;
	Cap_Length = z_max - z_min;
	echo(str("Cap length from fret ", from_fret, " to ", to_fret, " is ", Cap_Length, "mm"));

	module solid_tube(cap_taper = 1.5) {
		function get_x_max(z) =
			let (
				fret_num = mm_to_fret_number(z)-scale_offset,
				nearest_fret = round(fret_num),
				nearest_fret_height = fingerboard_max_thick + ((nearest_fret == 0) ? zero_fret_extra_height : 0),
				nearest_fret_mm = fsl(nearest_fret)
			)
			z;
		module outline_xy(profile_radius_scale = 1.0, x_max = fingerboard_max_thick, rounding_radius = 1.5) {
			profile_radius = profile_radius_scale * tube_radius;
			profile_center_x = (profile_radius_scale-1.0)*tube_radius + standard_profile_center_x;
			// minkowski method does exactly what we want, but it is slow (sweep a circle around the outline)
			// minkowski($fn = mink_fn_2d) {
			// 	circle(r = rounding_radius);
			// 	difference() {
			// 		translate([profile_center_x, 0, 0]) circle(r = tube_radius*profile_radius_scale - rounding_radius);
			// 		translate([fingerboard_max_thick - rounding_radius, -50]) square([100,100]);
			// 	}
			// }
			// make a circle and chop the top off (no edge rounding)
			// difference() {
			// 	translate([profile_center_x, 0, 0]) circle(r = profile_radius);
			// 	translate([x_max, -50]) square([100,100]);
			// }
			a_start = acos((x_max-profile_center_x)/profile_radius);
			a_end = 360 - a_start;
			a_step = (a_end - a_start)/profile_arc_steps;
			echo(str("profile_radius_scale is ", profile_radius_scale, " profile_center_x is ", profile_center_x, " a_start is ", a_start, " a_end is ", a_end));
			function pt(a) = [profile_center_x + profile_radius*cos(a), profile_radius*sin(a)];
			polygon(points = [for (i = [0:profile_arc_steps]) pt(a_start + i*a_step)]);
		}
		module fret_bumps(w=100) {
			translate([fingerboard_max_thick - fret_width/2, w/2, -z_offset + fsl(from_fret)])
				rotate([90,0,0]) cylinder(h = w, r = zero_fret_width/2, $fn=32);
			translate([fingerboard_max_thick - fret_width/2, w/2, -z_offset])
				for (fret = [from_fret+1:to_fret])
					translate([0, 0, fsl(fret)])
						rotate([90,0,0]) cylinder(h = w, r = fret_width/2, $fn=32);
		}

		module scallops(w=100) {
			// for (fret = [from_fret:to_fret+1])
			for (fret = [from_fret:to_fret])
				let(
					f_prev = fsl(fret-1) - z_offset,
					f_next = fsl(fret) - z_offset,
					o = fret_width/2 * sin(fret_angle),
					x0 = f_prev - o,
					x1 = f_next + o,
					y0 = fingerboard_min_thick,
					y1 = fingerboard_max_thick - (fret_width/2 * cos(fret_angle)),
					pts = [[x0, y1], [x1, y1], [(x0+x1)/2, y0]],
					cc = tri_circumcenter(pts),
					r = norm([x0, y1] - cc)
				) {
					translate([0,-w/2,0]) 
					rotate([-90,-90,0])
					translate(cc) cylinder(h = w, r = r);
				}
		}

		module basic_fretboard() {
			intersection() {
				hull() {
					translate([0,0,Cap_Length]) linear_extrude(0.001) outline_xy(1.0);
					translate([0,0,0]) linear_extrude(0.001) outline_xy(1.75);
				}
				union() {
					color("black") fret_bumps();
					color("white", alpha=0.01) translate([-50,-50,0]) cube([50 + fingerboard_max_thick - (fret_width/2 * cos(fret_angle)), 100, Cap_Length]);
				}
			}
		}

		// Make a solid tube and then subtract the notches
		difference() {
			basic_fretboard();
			difference() {
				color("red") scallops();
				color("blue") fret_bumps();
			}
		}
		// color("red") scallops();
	}

	difference() {
		solid_tube(1.5);
		linear_extrude(Cap_Length) T_hole();
		tapered_T_hole(z0 = 0, z1 = 3);
		tapered_T_hole(z0 = Cap_Length-3, z1 = Cap_Length+0.0001, o0 = 0, o1 = 1);
		// Version number
		translate([-10,10,Cap_Length-0.5]) linear_extrude(1) text("06", size=5, halign="center", valign="center", font="Noto Sans");
		// Fret number markers
		color("black")
		// for (fret = [from_fret:to_fret])
		for (fret = [from_fret+1:to_fret])
			translate([-3,-16,fsl(fret)-z_offset]) rotate([90,25,16]) linear_extrude(40) {
				octave = floor(fret/12);
				semitone = fret%12;
				octave_scale = octave_scales[octave];

				text(semitone_strings[semitone], size=4*octave_scale, halign="center", valign="center", font="Noto Sans");
				text(octave_strings[octave], size=6*octave_scale, halign="center", valign="center", font="Noto Sans");
			}
	}
}


tube(from_fret = 0, to_fret = 36, scale_offset = -5);
//translate([50, 0]) tube(from_fret = -4, to_fret = -3);
//translate([100, 0]) tube(from_fret = -2, to_fret = 0);
//translate([150, 0]) tube(from_fret = 1, to_fret = 3);
//translate([200, 0]) tube(from_fret = 4, to_fret = 7);
//translate([250, 0]) tube(from_fret = 8, to_fret = 12);
//translate([300, 0]) tube(from_fret = 13, to_fret = 19);
//translate([350, 0]) tube(from_fret = 20, to_fret = 30);