// 3WaySwitchPlug-v1.4.1
// 
// Adapter so that the 3-way (a-b c, a b-c, a b c) switches I bought from DigiKey years ago
// (TODO: link might be nice) can be put into a round hole.
// 
// Dimensions of the switch:
// Flange : 31.7mm x 16.4mm (long dimension is about 1+1/4")
// Shaft  : 30.7mm x 12.0mm (clips maximally squshed by my calipers)
// Shaft extends 18.3mm down, and contacts extend 28.3mm below the bottom of the flange
//
// Changes:
// v1.1:
// - Make hole length/width configurable
// v1.2:
// - Make all dimensions configurable in 0.1mm increments
// v1.3.0:
// - Shaft hole width = hole_width
// - Add 'snap-test' mode
// v1.3.1:
// - 'beveled' hole style
// - Smaller hole (29mm x 12mm)
// v1.3.2:
// - Default hole length = 30mm
// v1.3.3:
// - Copy hole shape to TOGHoleLib, use that as default implementation,
//   keeping `hole_style = "beveled-original"` for reference
// v1.4:
// - TOGRack mode!
// v1.4.1:
// - Add 3p MiniPVSleeve

diagonal = 33;

flange_thickness = 3.175;  // 0.1
flange_diameter  = 50.8;   // 0.1
shaft_length     = 12;     // 0.1
shaft_diameter   = 37;     // 0.1
shaft_inner_diameter = 35; // 0.1

// Tabs can be squeezed down to 29.1 or so with force, probably smaller; solid part is about 25mm
hole_length = 30; // 0.1
hole_width  = 12; // 0.1

mode = "round-plug"; // ["round-plug","snap-test","tograck-panel"]
hole_style = "beveled"; // ["beveled","beveled-original","square"]

$fn = 48;

module __123uih12_end_params() { }

inch = 25.4;

use <../lib/TOGHoleLib-v1.scad>
use <../lib/TOGShapeLib-v1.scad>

module panel_hole() {
	square([hole_length, hole_width], center=true);
}
module shaft_hole() {
	square([shaft_diameter, hole_width], center=true);
}

total_height = flange_thickness+shaft_length;

module the_hole(hole_style="beveled", depth=flange_thickness+shaft_length+1) intersection() {
	if( hole_style == "square" ) {
		linear_extrude(total_height*3, center=true) panel_hole();
		translate([0,0,flange_thickness-0.01]) linear_extrude(total_height) shaft_hole();
	} else {
		bevel_length = (shaft_diameter-hole_length)/2;
		bevel_start_z = 0.5;
		rotate([-90,0,0]) linear_extrude(hole_width, center=true) polygon([
			[-hole_length/2               ,                           -1],
			[-hole_length/2               , bevel_start_z               ],
			[-hole_length/2 - bevel_length, bevel_start_z + bevel_length],
			[-hole_length/2 - bevel_length,                        depth],
			[+hole_length/2 + bevel_length,                        depth],
			[+hole_length/2 + bevel_length, bevel_start_z + bevel_length],
			[+hole_length/2               , bevel_start_z               ],
			[+hole_length/2               ,                           -1]
		]);
	}

	linear_extrude(total_height*3, center=true) circle(d=shaft_inner_diameter);	
}

difference() {
	if( mode == "full" || mode == "round-plug" ) union() {
		epsilon = flange_thickness/2;
		if(flange_thickness > 0) linear_extrude(flange_thickness) circle(d=flange_diameter);
		translate([0,0,flange_thickness-epsilon]) linear_extrude(shaft_length+epsilon) difference() {
			circle(d=shaft_diameter);
			// circle(d=shaft_inner_diameter);
		}
	} else if( mode == "snap-test" ) {
		linear_extrude(flange_thickness+2) intersection() {
			square([shaft_diameter+2,hole_width+2], center=true);
			circle(d=shaft_diameter);
		}
	} else if( mode == "tograck-panel" ) {
		translate([1*inch, 0, 7]) cube([6, 10, 14], center=true);
		
		linear_extrude(3.175) difference() {
			tog_shapelib_rounded_beveled_square([3.5*inch, 0.75*inch], 1/8*inch, offset=-2);
			
			for( y=[-1/8*inch, 1/8*inch] ) for( x=[-1.5*inch, 1.5*inch] ) {
				translate([x,y]) circle(d=4);
			}
		}
		linear_extrude(6.35) {
			tog_shapelib_rounded_beveled_square([2*inch, 0.75*inch], 1/8*inch, offset=-2);
		}
	}

	rotate([180,0,0]) if( hole_style == "square" || hole_style == "beveled-original" ) {
		the_hole(hole_style=hole_style);
	} else {
		tog_holelib_hole("THL-1013", depth=flange_thickness+shaft_length+1);
	}

	if( mode == "tograck-panel" ) {
		translate([1*inch, 0, 0]) rotate([180,0,90]) tog_holelib_hole1021([3,1]);
	}
}