Asymptote problem

Question

I want to modify an Asymptote code that i found on this forum, but when i compile i get an empty page. I used Texstudio and Texmaker and the result is the same (an empty page). here is the code and link to the forum page. Draw realistic 3D crystal structures (diamond)

\documentclass{standalone}
\usepackage{asymptote}

\begin{document}
\begin{asy}
import three;
settings.render=8;
settings.prc=false;
size(10cm);

//currentprojection=perspective((45,45,30));
currentprojection = orthographic((3,6,1));

material sphereCcolor = material(diffusepen=black, ambientpen=gray(0.1), specularpen=white);
material cylcolor = material(diffusepen=white, ambientpen=white);

real cylRadius = 0.1;
real sphereRadius = 0.25;

void drawRod(triple a, triple b) {
  surface rod = extrude(scale(cylRadius)*unitcircle, axis=length(b-a)*Z);
  triple orthovector = cross(Z, b-a);
  if (length(orthovector) > .01) {
    real angle = aCos(dot(Z, b-a) / length(b-a));
    rod = rotate(angle, orthovector) * rod;
  }
  draw(shift(a)*rod, surfacepen=cylcolor);
}

void drawCarbon(triple center) {
     draw(shift(center)*scale3(sphereRadius)*unitsphere, surfacepen=sphereCcolor);
}

triple Aa = (0,0,0);
triple Ab = 4X;
triple Ac = 4Y;
triple Ad = 4X+4Y;
triple Ae = 2X+2Y;
triple Ba = 1X+1Y+1Z;
triple Bb = 3X+3Y+1Z;
triple Ca = 2X+2Z;
triple Cb = 2Y+2Z;
triple Cc = 4X+2Y+2Z;
triple Cd = 2X+4Y+2Z;
triple Da = 3X+1Y+3Z;
triple Db = 1X+3Y+3Z;
triple Ea = 4Z;
triple Eb = 4X+4Z;
triple Ec = 4Y+4Z;
triple Ed = 4X+4Y+4Z;
triple Ee = 2X+2Y+4Z;

drawRod(Ba,Aa);
drawRod(Ba,Ae);
drawRod(Bb,Ae);
drawRod(Bb,Ad);
drawRod(Ba,Ca);
drawRod(Ba,Cb);
drawRod(Bb,Cc);
drawRod(Bb,Cd);
drawRod(Da,Ca);
drawRod(Da,Cc);
drawRod(Db,Cb);
drawRod(Db,Cd);
drawRod(Da,Eb);
drawRod(Da,Ee);
drawRod(Db,Ee);
drawRod(Db,Ec);

drawCarbon(Aa);
drawCarbon(Ab);
drawCarbon(Ac);
drawCarbon(Ad);
drawCarbon(Ae);
drawCarbon(Ba);
drawCarbon(Bb);
drawCarbon(Ca);
drawCarbon(Cb);
drawCarbon(Cc);
drawCarbon(Cd);
drawCarbon(Da);
drawCarbon(Db);
drawCarbon(Ea);
drawCarbon(Eb);
drawCarbon(Ec);
drawCarbon(Ed);
drawCarbon(Ee);

// Frame
material framecolor = material(diffusepen=white, ambientpen=yellow);
void drawFrame(triple a, triple b) {
  surface rod = extrude(scale(.5*cylRadius)*unitcircle, axis=length(b-a)*Z);
  triple orthovector = cross(Z, b-a);
  if (length(orthovector) > .01) {
    real angle = aCos(dot(Z, b-a) / length(b-a));
    rod = rotate(angle, orthovector) * rod;
  }
  draw(shift(a)*rod, surfacepen=framecolor);
  draw(shift(b)*scale3(cylRadius)*unitsphere, surfacepen=framecolor);
}
drawFrame((0,0,0),4X);
drawFrame((0,0,0),4Y);
drawFrame((0,0,0),4Z);
drawFrame(4X,4X+4Y);
drawFrame(4X,4X+4Z);
drawFrame(4Y,4Y+4X);
drawFrame(4Y,4Y+4Z);
drawFrame(4Z,4X+4Z);
drawFrame(4Z,4Y+4Z);
drawFrame(4X+4Y+4Z,4Y+4Z);
drawFrame(4X+4Z,4X+4Y+4Z);
drawFrame(4X+4Y,4X+4Y+4Z);
\end{asy}
\end{document}

This is the code in asymptote (page of the developper https://github.com/pivaldi) to get this figure:

Answer 1

I simplify the code for the connector rods. For embbeding on a LaTeX document, see this overleaf link.

// http://asymptote.ualberta.ca/
import three;
size(5cm);
currentprojection=orthographic((3,4,5));
void drawRod(triple a,triple b){
draw(a--b,blue+8pt);
}
triple[] A={O,X,2Z};
for(triple p : A)
draw(shift(p)*scale3(.2)*unitsphere,orange);
  
drawRod(A[0],A[1]);
drawRod(A[1],A[2]);

Also have a look at this.