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diff --git a/texmf-dist/scripts/ketpic/ketlib/ketpic2escifiles6/ParamonCurve.sci b/texmf-dist/scripts/ketpic/ketlib/ketpic2escifiles6/ParamonCurve.sci
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+// 08.05.30
+
+function Out=ParamonCurve(P,N,PtL)
+// PtL=Plt;
+ if N==size(PtL,1)
+ Out=N;
+ else
+ Pa=PtL(N,:);
+ Pb=PtL(N+1,:);
+ V=Pb-Pa;
+ W=P-Pa;
+ D2=V(1)^2+V(2)^2;
+ S=(V(1)*W(1)+V(2)*W(2))/D2;
+ S=min(max(S,0),1);
+ Out=N+S;
+ end
+endfunction
+