1 files changed, 31 insertions, 0 deletions
diff --git a/graphics/asymptote/examples/p-orbital.asy b/graphics/asymptote/examples/p-orbital.asy
new file mode 100644
index 0000000000..4638aa21a2
--- /dev/null
+++ b/graphics/asymptote/examples/p-orbital.asy
@@ -0,0 +1,31 @@
+import graph3;
+import palette;
+size(200);
+currentprojection=orthographic(6,8,2);
+viewportmargin=(1cm,0);
+ 
+real c0=0.1;
+
+real f(real r) {return r*(1-r/6)*exp(-r/3);}
+
+triple f(pair t) {
+  real r=t.x;
+  real phi=t.y;
+  real f=f(r);
+  real s=max(min(f != 0 ? c0/f : 1,1),-1);
+  real R=r*sqrt(1-s^2);
+  return (R*cos(phi),R*sin(phi),r*s);
+}
+
+bool cond(pair t) {return f(t.x) != 0;}
+
+real R=abs((20,20,20));
+surface s=surface(f,(0,0),(R,2pi),100,8,Spline,cond);
+
+s.colors(palette(s.map(abs),Gradient(palegreen,heavyblue)));
+
+render render=render(compression=Low,merge=true);
+draw(s,render);
+draw(zscale3(-1)*s);
+ 
+axes3("$x$","$y$","$z$",Arrow3);