Asymptote generated 3D raster image

Question

Consider the following minimal Asymptote 3D example:

\documentclass{article}
\usepackage{filecontents}
\usepackage{asymptote}
\begin{filecontents*}{testfile.asy}
import three;
currentprojection=perspective(3,-4,4,center=true);
    draw((0,0,0)--(0,2,0));
    draw((0,0,0)--(2,0,0));
    draw((2,2,0)--(0,2,0));
    draw((2,2,0)--(2,0,0)); 
    draw((0,0,0)--(0,0,2));
    draw((0,2,0)--(0,2,2));
    draw((2,0,0)--(2,0,2));
    draw((2,2,0)--(2,2,2));
    draw((0,0,2)--(0,2,2));
    draw((0,0,2)--(2,0,2));
    draw((2,2,2)--(0,2,2));
    draw((2,2,2)--(2,0,2));
\end{filecontents*}
\begin{document}
    \asyinclude[height=25mm,inline=true,attach=false,viewportwidth=4cm,viewportheight=25mm]{testfile.asy}
\end{document}

It generated a 3D figure which is rotatable in Adobe Reader after the user clicks on it. However, the 'poster' image displayed first (which is also used for printing) is rendered as a raster image. Is there any way to render it vectorized?

Answer 1

settings.render=0;

can generate vector graphics. But it fails when using such inline examples. :-(

render=0 force Asymptote to use an old algorithm (used before ver. 1.44). It generate vector graphics but it has some other restrictions about hidden removal. The result may be wrong.

It is possible to compile the 2D result seperately by hand. It's a bit boring, but it works.

I'm still intereted in it. Maybe we should post a message to asymptote.sf.