Christoph: /* External links */

2007-07-03T05:47:46Z

‎External links

Christoph at 05:47, 3 July 2007

2007-07-03T05:47:09Z

New page

'''Pic''' is a domain-specific language by Brian Kernighan for specifying diagrams in terms of objects such as boxes with arrows between them. The pic compiler translates this description into concrete drawing commands. Pic is a procedural programming language, with variable assignment, macros, conditionals, and looping.

Pic has some similarity with [[wikipedia:MetaPost|MetaPost]] and the [[wikipedia:DOT language|DOT language]].

==Example PIC file==
Create a file, <code>foo.pic</code>, with the following:
<pre>
.PS
# Draw a demonstration up left arrow with grid box overlay
define gridarrow
{
move right 0.1
[
{arrow up left $1;}
box wid 0.5 ht 0.5 dotted with .nw at last arrow .end;
for i = 2 to ($1 / 0.5) do
{
box wid 0.5 ht 0.5 dotted with .sw at last box .se;
}
move down from last arrow .center;
[
if ( $1 == boxht ) \
then { "\fBline up left\fP" } \
else { sprintf("\fBarrow up left %g\fP", $1) };
]
]
move right 0.1 from last [] .e;
}
gridarrow(0.5);
gridarrow(1);
gridarrow(1.5);
gridarrow(2);
undef gridarrow
.PE
</pre>

Now, turn this PIC into a PNG with:
pic2plot -T png -f 0.012 --bitmap-size 1000x1000 foo.pic >foo.png
convert -crop 0x0 foo.png foo.png

==References==
*Kernighan BW (1982). "PIC: a language for typesetting graphics". ''Software Practice Experience, 12:1-20''.

==External links==
*[http://floppsie.comp.glam.ac.uk/Glamorgan/gaius/web/pic.html Making Pictures With GNU PIC]
*[http://www.kohala.com/start/troff/troff.html Troff resources (see the "pic" section)]
*[http://www.kohala.com/start/troff/pic2html.html Turning PIC into HTML
*[http://www.ece.uwaterloo.ca/~aplevich/dpic/ DPIC], an implementation of the PIC language by Dwight Aplevich. This implementation has a few nice extensions and outputs many different image formats.
*[http://www.ece.uwaterloo.ca/~aplevich/dpic/ DPIC] — by Dwight Aplevich

[[category:Linux Command Line Tools]]
[[category:Graphics software]]

@@ Line 45: / Line 45: @@
 *[http://floppsie.comp.glam.ac.uk/Glamorgan/gaius/web/pic.html Making Pictures With GNU PIC]
 *[http://www.kohala.com/start/troff/troff.html Troff resources (see the "pic" section)]
-*[http://www.kohala.com/start/troff/pic2html.html Turning PIC into HTML
+*[http://www.kohala.com/start/troff/pic2html.html Turning PIC into HTML]
-*[http://www.ece.uwaterloo.ca/~aplevich/dpic/ DPIC], an implementation of the PIC language by Dwight Aplevich.  This implementation has a few nice extensions and outputs many different image formats.
+*[http://www.ece.uwaterloo.ca/~aplevich/dpic/ DPIC], an implementation of the PIC language by Dwight Aplevich. This implementation has a few nice extensions and outputs many different image formats.
-*[http://www.ece.uwaterloo.ca/~aplevich/dpic/ DPIC] &mdash; by Dwight Aplevich
 [[category:Linux Command Line Tools]]
 [[category:Graphics software]]

Pic language - Revision history

Christoph: /* External links */

Christoph at 05:47, 3 July 2007