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authorKarl Berry <karl@freefriends.org>2013-04-07 18:26:53 +0000
committerKarl Berry <karl@freefriends.org>2013-04-07 18:26:53 +0000
commitb04c2e1a42573e9735547702356c7b9a769a6855 (patch)
treec0753443f39500a062d7698fe6b94359c813f871 /Master/texmf-dist/doc/asymptote/examples/polarcircle.asy
parentfb0bf13304a356f197bfc1add17f98c07e96f17b (diff)
texmf -> texmf-dist: doc
git-svn-id: svn://tug.org/texlive/trunk@29714 c570f23f-e606-0410-a88d-b1316a301751
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diff --git a/Master/texmf-dist/doc/asymptote/examples/polarcircle.asy b/Master/texmf-dist/doc/asymptote/examples/polarcircle.asy
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+import math;
+import graph;
+size(0,100);
+
+real f(real t) {return 2*cos(t);}
+pair F(real x) {return (x,f(x));}
+
+draw(polargraph(f,0,pi,operator ..));
+
+defaultpen(fontsize(10pt));
+
+xaxis("$x$");
+yaxis("$y$");
+
+real theta=radians(50);
+real r=f(theta);
+draw("$\theta$",arc((0,0),0.5,0,degrees(theta)),red,Arrow,PenMargins);
+
+pair z=polar(r,theta);
+draw(z--(z.x,0),dotted+red);
+draw((0,0)--(z.x,0),dotted+red);
+label("$r\cos\theta$",(0.5*z.x,0),0.5*S,red);
+label("$r\sin\theta$",(z.x,0.5*z.y),0.5*E,red);
+dot("$(x,y)$",z,N);
+draw("r",(0,0)--z,0.5*unit(z)*I,blue,Arrow,DotMargin);
+
+dot("$(a,0)$",(1,0),NE);
+dot("$(2a,0)$",(2,0),NE);
+
+