Death Star

Death Star
You are encouraged to solve this task according to the task description, using any language you may know.

Death Star is a task to display a region that consists of a large sphere with part of a smaller sphere removed from it as a result of geometric subtraction. (This will basically produce a shape like a "death star".)

Brlcad

<lang brlcad>

1. We need a database to hold the objects

opendb deathstar.g y

1. We will be measuring in kilometers

units km

1. Create a sphere of radius 60km centred at the origin

in sph1.s sph 0 0 0 60

1. We will be subtracting an overlapping sphere with a diameter of 40km
2. The resultant hole will be smaller than this, because we only
3. only catch the edge

in sph2.s sph 0 90 0 40

1. Create a region named deathstar.r which consists of big minus small sphere

r deathstar.r u sph1.s - sph2.s

1. We will use a spherical material texture with rgb colour 224,224,224
2. and zero inheritance

mater deathstar.r spm 224 224 224 0

1. Clear the wireframe display and draw the deathstar

B deathstar.r

1. We now trigger the raytracer to see our finished product

rt

</lang>

Openscad

<lang openscad> // We are performing geometric subtraction

difference() {

 // Create the primary sphere of radius 60 centred at the origin

 translate(v = [0,0,0]) {
   sphere(60);
 }

 /*Subtract an overlapping sphere with a diameter of 40
    The resultant hole will be smaller than this, because we only
    only catch the edge
 */

 translate(v = [0,90,0]) {
   sphere(40);
 }

} </lang>