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diff --git a/texmf-dist/scripts/ketpic/ketlib/ketpic2escifiles6/ProjcoordCurve.sci b/texmf-dist/scripts/ketpic/ketlib/ketpic2escifiles6/ProjcoordCurve.sci
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+++ b/texmf-dist/scripts/ketpic/ketlib/ketpic2escifiles6/ProjcoordCurve.sci
@@ -0,0 +1,18 @@
+// 08.07.11
+// 08.10.16
+
+function Out=ProjcoordCurve(Curve)
+ global PHI THETA;
+ SP=sin(PHI); CP=cos(PHI);
+ ST=sin(THETA); CT=cos(THETA);
+ Out=[];
+ for J=1:size(Curve,1)
+ P=Curve(J,:);
+ x=P(1); y=P(2); z=P(3);
+ Xz=-x*SP+y*CP;
+ Yz=-x*CP*CT-y*SP*CT+z*ST;
+ Zz=x*CP*ST+y*SP*ST+z*CT;
+ Out=[Out;Xz,Yz,Zz];
+ end;
+endfunction;
+