class Cube{
Point3D[] vertices = new Point3D[24];
float w, h, d;
// Constructors
// default constructor
Cube(){
}
// constructor 2
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
vertices[8] = new Point3D(w/2,-h/2,d/2);
vertices[9] = new Point3D(w/2,-h/2,-d/2);
vertices[10] = new Point3D(w/2,h/2,-d/2);
vertices[11] = new Point3D(w/2,h/2,d/2);
//back
vertices[12] = new Point3D(-w/2,-h/2,-d/2);
vertices[13] = new Point3D(w/2,-h/2,-d/2);
vertices[14] = new Point3D(w/2,h/2,-d/2);
vertices[15] = new Point3D(-w/2,h/2,-d/2);
//top
vertices[16] = new Point3D(-w/2,-h/2,d/2);
vertices[17] = new Point3D(-w/2,-h/2,-d/2);
vertices[18] = new Point3D(w/2,-h/2,-d/2);
vertices[19] = new Point3D(w/2,-h/2,d/2);
//bottom
vertices[20] = new Point3D(-w/2,h/2,d/2);
vertices[21] = new Point3D(-w/2,h/2,-d/2);
vertices[22] = new Point3D(w/2,h/2,-d/2);
vertices[23] = new Point3D(w/2,h/2,d/2);
}
void create(){
// draw cube
for (int i=0; i<6; i++){
beginShape(QUADS);
for (int j=0; j<4; j++){
vertex(vertices[j+4*i].x, vertices[j+4*i].y,
vertices[j+4*i].z);
}
endShape();
}
}
void create(color[]quadBG){
// draw cube
for (int i=0; i<6; i++){
fill(quadBG[i]);
beginShape(QUADS);
for (int j=0; j<4; j++){
vertex(vertices[j+4*i].x, vertices[j+4*i].y,
vertices[j+4*i].z);
}
endShape();
}
}
}