// Flex Sensor - units in cm

width=40;
min_width=5;
height=0.1;
length=100;
gap=2;
struts=0;
strut_height=height;
endcap_run_ratio=0.5; /* How large are joined sections compared to run
                       width */

term_diameter = 1.628;
term_side = sqrt(term_diameter*term_diameter/2);
term_distance = 5;
term_offset = 15;

nozzle_width = 0.4;

sewable = 0;

$fn = 100;

// DNE
leg_width = (width - gap) / 2;
gap_span = leg_width*2+gap;

module cap_model () {
    difference () {
        circle(width / 2);
        translate([-width / 2, -width])
           square(width);
    }
}  

module Cap () {
    translate([width / 2, length - width / 2, 0])
    difference () {
        linear_extrude (height)
            cap_model();
        translate([0, 0, 0.2])
        difference () {
            linear_extrude (height)
                offset(r=-0.5)
                    cap_model();
            linear_extrude (height) 
                offset(r=-1)
                    cap_model();
        }
    }
}

module Leg() {
    term1_x = abs(width - term_distance) / 2;
    t_total_width = min_width;
    difference () {
    union () {
	linear_extrude(height)
	    polygon([[0, length - width / 2], [leg_width, length - width / 2],
		     [term1_x + term_side / 2 + gap/2, 0],
		     [term1_x + term_side / 2 + gap/2 - min_width, 0]]);
	translate([term1_x + term_side / 2 - min_width + gap/2, 0, 0])
	    cube([min_width, 2, term_side/2]);
	linear_extrude(term_side/2)
	polygon([[term1_x - term_side/2, -term_side * 4], [term1_x + term_side / 2 + gap/2, 0],
		      [term1_x + term_side / 2 +gap / 2 - min_width, 0]]);

    }
    translate([0,0, 0.2])
    difference () {
	linear_extrude (height)
	offset(r=-0.5)
	polygon([[0, length - width / 2], [leg_width, length - width / 2],
		     [term1_x + term_side / 2 + gap/2, 0],
		     [term1_x + term_side / 2 + gap/2 - min_width, 0]]);

	linear_extrude (height)
	offset(r=-1)
	polygon([[0, length - width / 2], [leg_width, length - width / 2],
		     [term1_x + term_side / 2 + gap/2, 0],
		     [term1_x + term_side / 2 + gap/2 - min_width, 0]]);
    }
    }
}

module Terminal() {
    translate([-term_side/2, 0, 0])
    cube([term_side, term_offset, term_side]);
}

module Terminals() {
    Terminal();
    translate([term_distance, 0, 0])
      Terminal();
}

union() {
    // Legs
    union () {
	Leg();
	translate([width, 0, 0])
	    mirror()
	    Leg();
    }

    // Terminals
    translate([-(term_distance-width)/2, -term_offset, 0])
	Terminals();
    
    Cap();


    // End Support
    *translate([0, length-leg_width/4, 0])
	cube([gap_span, leg_width/4, height*1.5]);

    // Edge Supports
    *cube([nozzle_width, length, height * 1.5]);
    *translate([width - nozzle_width, 0, 0])
	cube([nozzle_width, length, height * 1.5]);

}