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-rw-r--r--Build/source/utils/asymptote/examples/parametricsurface.asy23
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diff --git a/Build/source/utils/asymptote/examples/parametricsurface.asy b/Build/source/utils/asymptote/examples/parametricsurface.asy
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+++ b/Build/source/utils/asymptote/examples/parametricsurface.asy
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+import graph3;
+
+size(200,0);
+currentprojection=orthographic(4,0,2);
+
+real R=2;
+real a=1.9;
+
+triple f(pair t) {
+ return ((R+a*cos(t.y))*cos(t.x),(R+a*cos(t.y))*sin(t.x),a*sin(t.y));
+}
+
+pen p=rgb(0.2,0.5,0.7);
+surface s=surface(f,(0,0),(2pi,2pi),8,8,Spline);
+
+// surface only
+//draw(s,lightgray);
+
+// mesh only
+// draw(s,nullpen,meshpen=p);
+
+// surface & mesh
+draw(s,lightgray,meshpen=p,render(merge=true));