<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div>Le 1 mai 2012 à 11:40, Antonis Tsolomitis a écrit :</div><br class="Apple-interchange-newline"><blockquote type="cite">
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<div bgcolor="#FFFFFF" text="#000000">My need is to access a symbol for the
contour integral with <br>
counterclockwise orientation. Something like \oint but with an arrow
on the circle.<br>
Taking the symbol from txfonts it should be like this<br>
<br>
<span><tblatex-3.png></span><br>
<br>
(the code above was $\displaystyle\varointctrclockwise_{\partial S}
F$)<br>
Is such a symbol available in Lucida?</div></blockquote><br></div><div>The Type 1 Lucida fonts don't seem to have this symbol (which would reside, I think, in lbme.pfb if it existed).</div><div><br></div><div>So the only solution based on them would be to fake the symbol using \circlearrowleft and the code on the TeX FAQ for the principal value integral at <<a href="http://www.tex.ac.uk/cgi-bin/texfaq2html?label=prinvalint">http://www.tex.ac.uk/cgi-bin/texfaq2html?label=prinvalint</a>>, yielding something like</div><div><br></div><div>\documentclass[12pt]{article}<br>\usepackage[expert,lucidasmallscale]{lucidabr}<br>\newcommand{\Xint}[1]{\mathchoice<br> {\XXint\displaystyle\textstyle{#1}}%<br> {\XXint\textstyle\scriptstyle{#1}}%<br> {\XXint\scriptstyle\scriptscriptstyle{#1}}%<br> {\XXint\scriptscriptstyle\scriptscriptstyle{#1}}%<br> \!\int}<br>\newcommand{\XXint}[3]{{\setbox0=\hbox{$#1{#2#3}{\int}$}<br> \vbox{\hbox{$#2#3$}}\kern-.5\wd0}}<br>\newcommand{\ointctrclockwise}{\Xint\circlearrowleft}<br>\begin{document}<br>\[ \ointctrclockwise_{\partial S} F \]<br>\end{document}</div><div><br></div><div>But a more forward-looking solution would be to switch to OpenType Lucida: the symbol is there in LucidaBrightMathOT.otf in small, medium and large sizes, at U+2233 namely</div><div><br></div><div>0x110226 uni2233.ss03</div><div>0x11034f uni2233.mid</div><div>Ox110369 uni2233.display</div><div><br></div><div>What's needed is use the XeTeX or LuaTeX engines and the fontspec and unicode-math LaTeX packages, yielding for example (with XeLaTeX and the fonts installed at the OS level)</div><div><br></div><div>\documentclass[12pt]{article}</div><div>\usepackage{fontspec,unicode-math}<br>\defaultfontfeatures{Ligatures=TeX,Scale=.92}<br>\setmainfont{Lucida Bright OT}<br>\setsansfont{Lucida Sans OT}<br>\setmonofont{Lucida Sans Typewriter OT}<br>\setmathfont{Lucida Bright Math OT}<br>\begin{document}<br>\[ \ointctrclockwise_{\partial S} F \]<br>\end{document}</div><div><br></div><div>The results of the two approaches side-by-side are</div><div><br></div><div><img height="171" width="471" apple-width="yes" apple-height="yes" id="f1dbd335-65f2-43ec-ac91-8d484892b245" src="cid:17AEADA9-C6A8-4E03-BD2C-0FBAA27DD5D9"></div><div><br></div><div>Hope this helps,</div><div><br></div><div>Bruno Voisin</div></body></html>