ship.groovy

@groovy.transform.InheritConstructors
class Bell {
	double belltop = 50;
	double bellbottom = 100;
	double height = 150;
	double topheight = 10;
	double bellthickness = 10;
	int facets = 16;
	
	

	CSG model;
	def toCSG(){
		CSG cylinder = new Cylinder(	belltop, // Radius at the top
		bellbottom, // Radius at the bottom
		height, // Height
		(int)facets //resolution
		).toCSG();
		
		CSG innervoid = new Cylinder(	belltop-bellthickness, // Radius at the top
		bellbottom-bellthickness, // Radius at the bottom
		height, // Height
		(int)facets //resolution
		).toCSG();
		
		CSG top = new Cylinder(	belltop, // Radius at the top
		belltop, // Radius at the bottom
		topheight, // Height
		(int)facets //resolution
		).toCSG();
		
		model = cylinder.difference(innervoid).rotx(180).union(top).movez(-topheight);
		return model;
	}
}

@groovy.transform.InheritConstructors
class Tank {
	int facets = 16;
	double length = 600;
	double diameter = 150;
	double cyllen = length-diameter;
	def toCSG(){
		CSG sphere = new Sphere(diameter,facets,8).toCSG().rotx(90);
		CSG body = new Cylinder(	diameter, // Radius at the top
		diameter, // Radius at the bottom
		cyllen, // Height
		(int)facets //resolution
		).toCSG();
		body = body.union([sphere,sphere.movez(cyllen)]);
		body = body.movez(-cyllen/2)
		body = body.rotz(22.5);

		CSG strut =  new Cylinder(	20, // Radius at the top
			20, // Radius at the bottom
			100, // Height
			(int)facets, //resolution
			).toCSG().roty(90).movex(-diameter+30);

		body = body.union([strut.movez(length*0.40),strut.movez(-length*0.40)]);

				
		return body;
	}
}

@groovy.transform.InheritConstructors
class Reactor {
	double diameter =100;
	double middle   = 300;
	double height   = 400;
	double endHeight = height * 0.2;
	double tankheight = height * 0.6;

	int facets = 16;

	def toCSG(){
		CSG cap = new Cylinder(	middle, // Radius at the top
		diameter, // Radius at the bottom
		endHeight, // Height
		(int)facets //resolution
		).toCSG();

		CSG body = new Cylinder(	middle, // Radius at the top
		middle, // Radius at the bottom
		tankheight, // Height
		(int)facets //resolution
		).toCSG();

		


		
		CSG tank = body.union([cap.movez(tankheight),cap.rotx(180) ]).movez(endHeight);
		return tank;
	}
}

@groovy.transform.InheritConstructors
class Ship {
	
	Bell rocket;
	Reactor reactor;
	Tank tank;
	int facet = 24;

	Ship(){
		rocket = new Bell();
		reactor = new Reactor();
		tank = new Tank();
		rocket.facets = facet;
		reactor.facets = facet*2;
		tank.facets = facet;
	}
	def toCSG(){


		CSG pipe = new Cylinder(	20, // Radius at the top
				20, // Radius at the bottom
				50, // Height
				(int)facet //resolution
				).toCSG();
		CSG b = rocket.toCSG().union(pipe).rotx(-10).rotz(90).movez(0).movex(120+10);
		CSG engines = b.union([b.rotz(90),b.rotz(180),b.rotz(270)])
		CSG r = reactor.toCSG();

		CSG ship = r.union(engines).movez(-400);

		

		CSG centershaft = new Cylinder(	20, // Radius at the top
				20, // Radius at the bottom
				800, // Height
				(int)facet //resolution
				).toCSG();
		ship = ship.union(centershaft);

		CSG tankelem = tank.toCSG();
		tankelem = tankelem.movex(230).movez(400);

		ship = ship.union([tankelem,tankelem.rotz(90),tankelem.rotz(180),tankelem.rotz(270)]);
				
		return ship;
	}
	
}

CSG ship = new Ship().toCSG();

return ship;
//return new Tank().toCSG();