summaryrefslogtreecommitdiff
path: root/Master/texmf-dist/tex/latex/circuitikz/pgfcircmath.sty
diff options
context:
space:
mode:
Diffstat (limited to 'Master/texmf-dist/tex/latex/circuitikz/pgfcircmath.sty')
-rw-r--r--Master/texmf-dist/tex/latex/circuitikz/pgfcircmath.sty42
1 files changed, 42 insertions, 0 deletions
diff --git a/Master/texmf-dist/tex/latex/circuitikz/pgfcircmath.sty b/Master/texmf-dist/tex/latex/circuitikz/pgfcircmath.sty
new file mode 100644
index 00000000000..f7095d337a2
--- /dev/null
+++ b/Master/texmf-dist/tex/latex/circuitikz/pgfcircmath.sty
@@ -0,0 +1,42 @@
+% Copyright 2007-2009 by Massimo Redaelli
+%
+% This file may be distributed and/or modified
+%
+% 1. under the LaTeX Project Public License and/or
+% 2. under the GNU Public License.
+%
+% See the file doc/LICENSE for more details.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Math routines
+
+\def\pgf@circ@stripdecimals#1.#2\pgf@nil{#1}
+
+% angle between 0 and 360
+\def\pgf@circ@slope#1#2{%
+ \pgf@process{#1}%
+ \pgf@xa=\pgf@x%
+ \pgf@ya=\pgf@y%
+ \pgf@process{#2}%
+ \advance\pgf@x by-\pgf@xa%
+ \advance\pgf@y by-\pgf@ya%
+ \ifdim\pgf@x=0pt
+ \ifdim\pgf@y<0pt
+ \def\pgfmathresult{-90.0}
+ \else
+ \def\pgfmathresult{+90.0}
+ \fi
+ \else
+ \pgfmathdivide{\pgf@y}{\pgf@x}
+ \pgfmathatan{\pgfmathresult}
+ \ifdim\pgf@x<0pt
+ \pgfmathsubtract{\pgfmathresult}{+180}
+ \fi
+ \fi
+ \pgf@x=\pgfmathresult pt
+ \ifdim\pgf@x<0pt
+ \pgfmathadd{\pgfmathresult}{+360}
+ \fi
+ }
+
+\endinput