// hull.scad

// (c) Simon Brooke 2025; CC-BY-SA

include <BOSL2/std.scad>
include <BOSL2/skin.scad>

// doesn't work, but it's promising
module hull_i() {
    color("darkgreen", 0.5)
    difference() {
        translate([1000, 0, 600])
            rotate([0, 5, 0])
            scale([3.49, .79, 1.19])
            difference() {
                sphere(r=500);
                cube([1000, 1000, 1000]);
            }

        intersection() {
            translate([1000, 0, 600])
                rotate([0, 5, 0])
                scale([3.5, .8, 1.2])
                sphere(r=500);
            
            rotate([0, 95, 0])
                translate([-500,0,0])
                prismoid(size1=[1000, 1000], 
                        size2=[500, 600], 
                        height=3000);
        }
    }
}

module hull() {   
    intersection() {
        translate([2000,0,0])
            rotate([180, 90, 0])
            scale([20, 16, 20])
            rotate_extrude()
            //rotate([ 0, 90, 0])
            import("library/hull-volume-of-rotation.svg");
        
        translate([-900,0, -110])
        rotate([0, 90, 0])
            prismoid(size1=[1100, 1000], 
                    size2=[400, 600], 
                    height=3000);   
    }
        
    rotate([0,90,0])
        translate([0,0,-2070])
        difference() {
            skin(
                [ellipse($fn=64,r=[350,30],center=true),
                 ellipse($fn=64,r=[430,340],center=true)], z=[0,1200],
                slices=40,sampling="length",method="reindex");
            skin(
                [ellipse($fn=64,r=[344,24],center=true),
                 ellipse($fn=64,r=[424,334],center=true)], z=[-1,1201],
                slices=40,sampling="length",method="reindex");
        }
}

hull();