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diff --git a/ppmrough.html b/ppmrough.html new file mode 100644 index 00000000..20f6f098 --- /dev/null +++ b/ppmrough.html @@ -0,0 +1,180 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2//EN"> +<HTML><HEAD><TITLE>Ppmrough User Manual</TITLE></HEAD> +<BODY> +<H1>ppmrough</H1> +Updated: 23 August 2002 +<BR> +<A HREF="#index">Table Of Contents</A> + +<A NAME="lbAB"> </A> +<H2>NAME</H2> +ppmrough - create PPM image of two colors with a ragged border between them +<A NAME="lbAC"> </A> + +<H2>SYNOPSIS</H2> + +<B>ppmrough</B> + +[<B>-left </B><I>pixels</I>] + +[<B>-right </B><I>pixels</I>] + +[<B>-top </B><I>pixels</I>] + +[<B>-bottom </B><I>pixels</I>] + +[<B>-width </B><I>pixels</I>] + +[<B>-height </B><I>pixels</I>] + +[<B>-bg </B><I>rgb:##/##/##</I>] + +[<B>-fg </B><I>rgb:##/##/##</I>] + +[<B>-var </B><I>pixels</I>] + +[<B>-init </B><I>seed</I>] + +[<B>-verbose</B>] + +<P>All options can be abbreviated to their shortest unique prefix. +You may use two hyphens instead of one. You may separate an option +name and its value with white space instead of an equals sign. + +<P> +<A NAME="lbAD"> </A> +<H2>DESCRIPTION</H2> + +<p>This program is part of <a href="index.html">Netpbm</a>. + +<p><B>ppmrough</b> generates a PPM image of the specified width, height, and +colors. <B>ppmrough</B> tiles the image into semi-rectangular regions +with a ragged borders between them. It calculates the fluctuations +with the <b>rand()</b> standard C library function. + +<P><B>ppmrough</B> writes the PPM image to Standard Output. + +<P>The maxval of the output image is 255 (You can change this with +<b>pamdepth</b>). + +<P>Use the options <B>-left</B> or <B>-right</B>, respectively, to +make vertical borders, and <B>-top</B> or <B>-bottom</B>, +respectively, to generate horizontal borders inside the image. Each of +these options needs an integer value <I>pixels</I> that determines the +average distance of the interior border to the related edge of the +image. You may combine the <B>-left</B>, <B>-right</B>, <B>-top</B>, +and <B>-bottom</B> options to generate an image with more than one +border. The algorithm ensures that you can concatenate two images +produced with the same (i.e. <B>-left</B>) value without dislocations. + +<P>You specify the dimensions of the generated image with the +<B>-width</B> and <B>-height</B> options. + +<P>Use the <B>-bg</B> and <B>-fg</B> options to set the background +(margin) color and the foreground (interior) color, respectively. If +you don't specify any of the <B>-left</B>, <B>-right</B>, <B>-top</B>, +and <B>-bottom</B> options, all pixels are set to foreground color. +The defaults are white foreground and black background. + +<P>Use the <B>-var</B> option to control the "raggedness" of +the border. The less its value is the smoother the border is. You +can initialize the pseudo-random generator with the <B>-init</B> +option. + +<P>You could use <b>ppmrough</b> with <b>ppmtopgm</b> to create a PGM +alpha mask and use it to roughen up the edges of another image. + +<A NAME="lbAE"> </A> +<H2>OPTIONS</H2> + +<DL COMPACT> +<DT><B>-left </B><I>pixels</I> + +<DD> Specifies the mean distance of the border from the left margin +(default: no border). + +<DT><B>-right </B><I>pixels</I> + +<DD>Specifies the mean distance of the border from the right margin +(default: no border). + +<DT><B>-top </B><I>pixels</I> + +<DD>Specifies the mean distance of the border from the top margin +(default: no border). + +<DT><B>-bottom </B><I>pixels</I> + +<DD>Specifies the mean distance of the border from the bottom margin +(default: no border). + +<DT><B>-width </B><I>pixels</I> + +<DD>Specifies the width of the image (default: 100). + +<DT><B>-height </B><I>pixels</I> + +<DD>Specifies the height of the image (default: 100). + +<DT><B>-bg </B><I>color</I> + +<DD>Background color. Specify this the same way you specify a color with + <b>ppmmake</b>. Default is black. + +<DT><B>-fg </B><I>color</I> + +<DD>Foreground color. Specify this the same way you specify a color with + <b>ppmmake</b>. Default is white. + +<DT><B>-var </B><I>pixels</I> + +<DD> Specifies the variance of the ragged border (default: 10). Must +be a positive integer. Set <I>pixels</I> to 1 to get a straight +border. + +<DT><B>-init </B><I>seed</I> + +<DD>Use this option to initialize the pseudo-random number generator +(the Standard C library <b>rand()</b> function) with <I>seed</I>. + +<DT><B>-verbose</B> + +<DD>Run <B>ppmrough</B> in verbose mode. It reports all parameters on +Standard Error. + +</DL> + +<A NAME="lbAF"> </A> +<H2>SEE ALSO</H2> + +<B><A HREF="ppmmake.html">ppmmake</A></B>, +<B><A HREF="pnmcat.html">pnmcat</A></B>, +<B><A HREF="ppmtopgm.html">ppmtopgm</A></B>, +<B><A HREF="ppm.html">ppm</A></B>, + +<A NAME="history"> </A> +<H2>HISTORY</H2> + +<P> +This program was added to Netpbm in Release 10.9 (September 2002). + +<A NAME="lbAG"> </A> +<H2>AUTHOR</H2> + +Copyright (C) 2002 by Eckard Specht. + + +<HR> +<A NAME="index"> </A> +<H2>Table Of Contents</H2> +<UL> +<LI><A HREF="#lbAB">NAME</A> +<LI><A HREF="#lbAC">SYNOPSIS</A> +<LI><A HREF="#lbAD">DESCRIPTION</A> +<LI><A HREF="#lbAE">OPTIONS</A> +<LI><A HREF="#lbAF">SEE ALSO</A> +<LI><A HREF="#lbAG">AUTHOR</A> +</UL> +<HR> +</BODY> +</HTML> |