Function contf3 draw ordinary contour lines but at slices of 3D data.
MGL code:
call 'prepare3d' title 'Cont3 sample':rotate 50 60:box cont3 c 'x':cont3 c:cont3 c 'z'
C++ code:
void smgl_cont3(mglGraph *gr)
{
mglData c; mgls_prepare3d(&c);
if(big!=3) gr->Title("Cont3 sample");
gr->Rotate(50,60); gr->Box();
gr->Cont3(c,"x"); gr->Cont3(c); gr->Cont3(c,"z");
}