size(6cm,0);
import bsp;
settings.prc=false;
real u=2.5;
real v=1;
currentprojection=oblique;
path3 r=plane((2u,0,0),(0,2v,0),(-u,-v,0));
path3 l=rotate(90,Z)*rotate(90,Y)*r;
path3 b=rotate(90,X)*rotate(90,Y)*r;
face[] faces;
filldraw(faces.push(r),project(r),lightred);
filldraw(faces.push(l),project(l),lightgrey);
filldraw(faces.push(b),project(b),lightblue);
add(faces);
draw(scale(1,1,1)*unitsphere, black, meshlight=nolight);
