1 files changed, 24 insertions, 0 deletions
diff --git a/graphics/asymptote/examples/sinc.asy b/graphics/asymptote/examples/sinc.asy
new file mode 100644
index 0000000000..352585bdbe
--- /dev/null
+++ b/graphics/asymptote/examples/sinc.asy
@@ -0,0 +1,24 @@
+import graph3;
+import contour;
+
+currentprojection=orthographic(1,-2,1);
+currentlight=White;
+
+size(12cm,0);
+
+real sinc(pair z) {
+  real r=2pi*abs(z);
+  return r != 0 ? sin(r)/r : 1;
+}
+
+render render=render(compression=Low,merge=true);
+
+draw(lift(sinc,contour(sinc,(-2,-2),(2,2),new real[] {0})),red);
+draw(surface(sinc,(-2,-2),(2,2),Spline),lightgray,render);
+
+draw(scale3(2*sqrt(2))*unitdisk,paleyellow+opacity(0.25),nolight,render);
+draw(scale3(2*sqrt(2))*unitcircle3,red,render);
+
+xaxis3("$x$",Bounds,InTicks);
+yaxis3("$y$",Bounds,InTicks(beginlabel=false));
+zaxis3("$z$",Bounds,InTicks);