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author | JODBaer <55744603+JODBaer@users.noreply.github.com> | 2022-05-15 15:38:10 +0200 |
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committer | GitHub <noreply@github.com> | 2022-05-15 15:38:10 +0200 |
commit | f176135c17eacc124e6ad3ed84ca805323bcbee7 (patch) | |
tree | 9a496cb9f67b42f566e4c05a7be5d0024beb9358 /buch/papers/nav/images/pk.m | |
parent | Merge branch 'AndreasFMueller:master' into master (diff) | |
parent | typos (diff) | |
download | SeminarSpezielleFunktionen-f176135c17eacc124e6ad3ed84ca805323bcbee7.tar.gz SeminarSpezielleFunktionen-f176135c17eacc124e6ad3ed84ca805323bcbee7.zip |
Merge branch 'AndreasFMueller:master' into master
Diffstat (limited to '')
-rw-r--r-- | buch/papers/nav/images/pk.m | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/buch/papers/nav/images/pk.m b/buch/papers/nav/images/pk.m new file mode 100644 index 0000000..6e89e9a --- /dev/null +++ b/buch/papers/nav/images/pk.m @@ -0,0 +1,55 @@ +# +# pk.m -- Punkte und Kanten für sphärisches Dreieck +# +# (c) 2021 Prof Dr Andreas Müller, OST Ostschweizer Fachhochschule +# + +A = [ 1, 8 ]; +B = [ -3, 3 ]; +C = [ 4, 4 ]; +P = [ 0, 0 ]; + +global fn; +fn = fopen("dreieckdata.tex", "w"); + +fprintf(fn, "\\coordinate (P) at (%.4f,%.4f);\n", P(1,1), P(1,2)); +fprintf(fn, "\\coordinate (A) at (%.4f,%.4f);\n", A(1,1), A(1,2)); +fprintf(fn, "\\coordinate (B) at (%.4f,%.4f);\n", B(1,1), B(1,2)); +fprintf(fn, "\\coordinate (C) at (%.4f,%.4f);\n", C(1,1), C(1,2)); + +function retval = seite(A, B, l, nameA, nameB) + global fn; + d = fliplr(B - A); + d(1, 2) = -d(1, 2); + # Zentrum + C = 0.5 * (A + B) + l * d; + # Radius: + r = hypot(C(1,1)-A(1,1), C(1,2)-A(1,2)) + # Winkel von + winkelvon = atan2(A(1,2)-C(1,2),A(1,1)-C(1,1)); + # Winkel bis + winkelbis = atan2(B(1,2)-C(1,2),B(1,1)-C(1,1)); + if (abs(winkelvon - winkelbis) > pi) + if (winkelbis < winkelvon) + winkelbis = winkelbis + 2 * pi + else + winkelvon = winkelvon + 2 * pi + end + end + # Kurve + fprintf(fn, "\\def\\kante%s%s{(%.4f,%.4f) arc (%.5f:%.5f:%.4f)}\n", + nameA, nameB, + A(1,1), A(1,2), winkelvon * 180 / pi, winkelbis * 180 / pi, r); + fprintf(fn, "\\def\\kante%s%s{(%.4f,%.4f) arc (%.5f:%.5f:%.4f)}\n", + nameB, nameA, + B(1,1), B(1,2), winkelbis * 180 / pi, winkelvon * 180 / pi, r); +endfunction + +seite(A, B, -1, "A", "B"); +seite(A, C, 1, "A", "C"); +seite(A, P, -1, "A", "P"); +seite(B, C, -2, "B", "C"); +seite(B, P, -1, "B", "P"); +seite(C, P, 2, "C", "P"); + +fclose(fn); |