Processing: Creative Coding and Computational Art

PROCESSING: CREATIVE CODING AND COMPUTATIONAL ART
626
Point3D(float x, float y, float z){
this.x = x;
this.y = y;
this.z = z;
}
}
If you run this, you should see the following output: -50.0, -50.0, -50.0.
Next, you’ll create your Cube class.
I should point out that technically a cube would be composed only of equal-area square
faces. However, my Cube class will allow you to specify different values for width, height,
and depth; sorry if this offends any of you purists out there.
The Cube class will rely on the Point3D class in a compostional relationship, in which I’ll
embed variables of type Point3D directly within the Cube class. Remember, each cube will
be created around the origin, so I won’t account for an x, y, or z property for the entire
cube; only the cube’s overall width, height, and depth properties will be specified, similarly
to how Processing’s box() function works. (The class code that follows will not execute on
its own, but you probably realize that by now.)
class Cube{
Point3D[] vertices = new Point3D[24];
float w, h, d;
// constructors
// default constructor
Cube(){
}
Cube(float w, float h, float d){
this.w = w;
this.h = h;
this.d = d;
// cube composed of 6 quads
//front
vertices[0] = new Point3D(-w/2,-h/2,d/2);
vertices[1] = new Point3D(w/2,-h/2,d/2);
vertices[2] = new Point3D(w/2,h/2,d/2);
vertices[3] = new Point3D(-w/2,h/2,d/2);
//left
vertices[4] = new Point3D(-w/2,-h/2,d/2);
vertices[5] = new Point3D(-w/2,-h/2,-d/2);
vertices[6] = new Point3D(-w/2,h/2,-d/2);
vertices[7] = new Point3D(-w/2,h/2,d/2);
//right