RTEXAMPLE(1)

NAME
rtexample - shoots a single ray at objects in a geometry database

SYNOPSIS

rtexample model.g objects...

DESCRIPTION

            This is an example of a program that uses librt to shoot a single ray at some
            geometry in a geometry (.g) database.
            librt is a big library with lots of code, but basically all that the programmer
            needs to do is include `raytrace.h` and specify the following:
              a_rt_i    a raytrace instance, from 'rt_dirbuild()'
              a_ray     ray origin and direction
              a_hit     function to be called if ray hits something
              a_miss    function to be called if ray misses everything
            rtexample defines simple functions for a_hit and a_miss which simply
            output information about hit region (if hit) and log misses. Applications will
            typically define more complex tasks to fo if the ray hits, such as describing a
            reflected ray.

EXAMPLE

rtexample car.g wheel door

Here, a single ray will be shot at the geometry database car.g and hit reports generated if the ray hits the specified objects.

SEE ALSO

mged(1), rt(1), librt(3)

AUTHORS

BRL-CAD Team

COPYRIGHT

This software is Copyright (c) 2004-2023 United States Government as represented by the U.S. Army Research Laboratory.

BUG REPORTS

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