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LIBPLOT3(3)			    BRL-CAD			   LIBPLOT3(3)

NAME
       libplot3	- graphics interface subroutines

SYNOPSIS
       void pl_3box(FILE *fp, int x0, int y0, int z0, int x1, int y1, int z1);

       void pl_3cont(FILE *fp, int x, int y, int z);

       void pl_3line(FILE *fp, int x0, int y0, int z0, int x1, int y1,
		     int z1);

       void pl_3move(FILE *fp, int x, int y, int z);

       void pl_3point(FILE *fp,	int x, int y, int z);

       void pl_3space(FILE *fp,	int x0,	int y0,	int z0,	int x1,	int y1,
		      int z1);

       void pl_arc(FILE	*fp, int xc, int yc, int x0, int y0, int x1, int y1);

       void pl_box(FILE	*fp, int x0, int y0, int x1, int y1);

       pl_circle(FILE *fp, int x, int y, int r);

       void pl_color(FILE *fp, int r, int g, int b);

       void pl_cont(FILE *fp, int x, int y);

       void pl_erase(FILE *fp);

       void pl_label(FILE *fp, const char *s);

       void pl_line(FILE *fp, int x0, int y0, int x1, int y1);

       void pl_linmod(FILE *fp,	const char *s);

       void pl_move(FILE *fp, int x, int y);

       void pl_point(FILE *fp, int x, int y);

       void pl_space(FILE *fp, int x0, int y0, int x1, int y1);

DESCRIPTION
       These subroutines generate graphic output commands for processing with
       the plot(1) plotting filters. They are slightly more general than those
       in libplot as these take	a file pointer.	They also include the BRL 3-D
       extensions to the plot intermediate code.

       Pl_space	or pl_3space must be used before any of	the graphic primitives
       to declare the amount of	space necessary. See plot3(5).

       Pl_box or pl_3box draws a box between the two given opposite points.
       The ''pen'' will	be left	at the second point.

       Pl_circle draws a circle	of radius r with center	at the point (x, y).
       Note that circle	and arc	cannot be transformed in three space if	one is
       using a filter to do that.

       Pl_arc draws an arc of a	circle with center at the point	(x, y) between
       the points (x0, y0) and (x1, y1).

       String arguments	to pl_label and	pl_linmod are terminated by nulls and
       do not contain new-lines.

       There are also 2-D and 3_D double-precision versions, with arguments
       identical to their counterparts above. The naming conventions are to
       change the prefix to "pd"; examples are thus pd_point and pd_3point.
       Vector versions for 3_D (also double-precision) are prefixed "pdv", as
       in pdv_3point.

       See plot3(5) and	plot(5)	for a description of the effect	of the
       remaining functions.

FILES
       /usr/brlcad/lib/libplot3.a produces output for plot(1G) filters

WARNINGS
       In order	to compile a program containing	these functions	in file.c it
       is necessary to use ``cc	file.c -lplot3''.

       Color specification and three-dimensional primitives are	BRL extensions
       to the "unix plot" language that	are not	generally found	on other
       systems.

SEE ALSO
       plot(1),	pl-fb(1), plot3(5), plot(5)

AUTHOR
       BRL-CAD Team

COPYRIGHT
       This software is	Copyright (c) 1989-2019	by the United States
       Government as represented by U.S. Army Research Laboratory.

BUG REPORTS
       Reports of bugs or problems should be submitted via electronic mail to
       devs@brlcad.org

BRL-CAD				  08/27/2021			   LIBPLOT3(3)

NAME | SYNOPSIS | DESCRIPTION | FILES | WARNINGS | SEE ALSO | AUTHOR | COPYRIGHT | BUG REPORTS

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