shelf-pin.jscad

//
// Pin holding shelve
//
//include ('jscad-utils.jscad')
//include ('jscad-utils-color.jscad')
function getParameterDefinitions() {
	return [{
        name: 'resolution',
        type: 'choice',
        values: [0, 1, 2, 3, 4, 5],
        captions: ['very low (6,16)', 'low (8,24)', 'normal (12,32)', 'high (24,64)', 'very high (48,128)',
		'ultra high (96,256)'],
        initial: 2,
        caption: 'Resolution:'
    }, {
        name: 'part',
        type: 'choice',
        values: ['piece', 'flat_piece'],
        captions: ['piece',  'piece with larger hold'],
        initial: 'flat_piece',
        caption: 'Part:'
    }];
}

function main(params) {
    var resolutions = [
        [6, 16],
        [8, 24],
        [12, 32],
        [24, 64],
        [48, 128],
        [96, 256]
];
    CSG.defaultResolution3D = resolutions[params.resolution][0];
    CSG.defaultResolution2D = resolutions[params.resolution][1];
    //util.init(CSG);

    // Radius of small pin
	var small_r = 4.92/2;
	// Length of pin
	var small_height = 7.92;
    // Radius of part outside
	var large_r = 7.92/2;
	// Length of outside part
	var total_height = 15.92;
	// dimensions of tooth holding the shelve
	var fillet_r = 1;
	tooth_x = small_r*2;
	tooth_y = 10;
	tooth_z = 15;

	var fillet = CSG.cylinder({
			start: [0,0,0],
			end: [0, 0, fillet_r],
			radius: small_r+fillet_r
		}).subtract(torus({ ro: small_r+fillet_r, ri: (fillet_r) }).translate([0, 0, fillet_r]));

	var small_cyl = CSG.cylinder({
		start: [0,0,0],
		end: [0, 0, small_height],
		radius: small_r
	}).union(fillet).rotateX(180).translate([0, 0, small_height]);

	var large_cyl = CSG.cylinder({
			start: [0,0,small_height],
			end: [0, 0, total_height-large_r],
			radius: large_r
		});
	var half_dome = CSG.sphere({
		center: [0, 0, total_height-large_r],
		radius: large_r
	});
	var tooth = CSG.cube({
			center: [0,0,small_height+tooth_z/2],
			radius: [tooth_x/2,tooth_y/2,tooth_z/2]
		});

	//
	// Render
	//
	//return fillet;
	//return small_cyl;
	switch (params.part) {
		case 'piece':
			return union(large_cyl, small_cyl, half_dome);

		case 'flat_piece':
			return union(small_cyl, tooth).
				rotateY(90)
				.intersect(CSG.cube({
					center: [0,0,small_height+tooth_z/2],
					radius: [tooth_x/2,tooth_y/2,tooth_z/2+small_height]})
					.rotateY(90)
				);
	}

}