Please ignore the binary numbers.
Without finding the intersection points in advance, is it possible to fill the complement of (A union B union C) with a solid color but the remaining regions remain transparent?
asked Aug 16, 2012 at 13:08
2 Answers
Using the approach described in How can I invert a 'clip' selection within TikZ?:
\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{calc}
\begin{document}
\tikzstyle{reverseclip}=[insert path={(current page.north east) --
(current page.south east) --
(current page.south west) --
(current page.north west) --
(current page.north east)}
]
\begin{tikzpicture}[remember picture]
\draw [gray!20, ultra thick] (-3,-3) grid (3,3);
\begin{pgfinterruptboundingbox}
\path [clip] (90:0.7cm) circle [radius=1cm] [reverseclip];
\path [clip] (-30:0.7cm) circle [radius=1cm] [reverseclip];
\path [clip] (210:0.7cm) circle [radius=1cm] [reverseclip];
\end{pgfinterruptboundingbox}
\fill [orange] (-2,-2) rectangle (2,2);
\end{tikzpicture}
\end{document}
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I see you have defined a path around the whole page, can I use this path to fill the page with orange?– qedOct 25, 2013 at 10:45
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@qed: Sure. You can use
\fill [orange] (current page.north west) rectangle (current page.south east);. Note that you need to have the optionsremember picture, overlayin yourtikzpictureoptions, and you need to compile the document twice.– JakeOct 25, 2013 at 11:04 -
why is it necessary to remember the position of current picture in this case? And what is the difference between current page and current picture?– qedOct 25, 2013 at 11:15
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@qed: Take a look at section 16.13.2 "Referencing the Current Page Node" in the PGF manual.– JakeOct 25, 2013 at 11:17
needs the latest pstricks.tex from http://texnik.dante.de/tex/generic/pstricks/ available on CTAN in a few days
\documentclass{minimal}
\usepackage{pstricks}\SpecialCoor
\begin{document}
\begin{pspicture}(-3,-3)(3,3)\psgrid[gridlabels=0pt]
\pscustom[linestyle=none]{%
\pspolygon(-2,-2)(-2,2)(2,2)(2,-2)
\moveto(0.7;90)\rmoveto(1,0)\pscircle(0.7;90){1}
\moveto(0.7;-30)\rmoveto(1,0)\pscircle(0.7;-30){1}
\moveto(0.7;210)\rmoveto(1,0)\pscircle(0.7;210){1}
\closepath
\code{eoclip}
\pspolygon(-2,-2)(-2,2)(2,2)(2,-2)
\fill[fillcolor=blue!60,fillstyle=solid,linestyle=none]}
\end{pspicture}
\end{document}
but there are still some small lines for the circles:
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sure, needs only one who implements it ...– user2478Aug 21, 2012 at 13:17
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I have not seen your PSTricks book because it is not available on the bookstore. Amazon.com also does not provide us with its table of contents. My question: what is the difference between the PSTricks package manuals and your PSTricks book? I am interested to know the details about PSTricks programming for hackers only (TVZ's manual on printed page number 38) and creating low/high level objects (TVZ's manual on printed page number 163-). Are both these topics elaborated in your PSTricks book? Aug 21, 2012 at 13:39
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fill=blueoption to the path if it's 1 or 0 at the specific digit.