XScreenSaver(1) 					      General Commands Manual						   XScreenSaver(1)

NAME

       glforestfire - draws a GL animation of sprinkling fire-like 3D triangles

SYNOPSIS

       glforestfire  [-display	host:display.screen] [-window] [-root] [-visual visual] [-delay microseconds] [-count number_of_particles] [-trees
       number_of_trees] [-size viewport_size] [-texture] [-no-texture] [-shadows]  [-no-shadows]  [-fog]  [-no-fog]  [-wireframe]  [-no-wireframe]
       [-wander] [-no-wander] [-trackmouse] [-no-trackmouse] [-fps] [-no-fps]

DESCRIPTION

       The glforestfire program draws an animation of sprinkling fire-like 3D triangles in a landscape filled with trees.

OPTIONS

       glforestfire accepts the following options:

       -window Draw on a newly-created window.	This is the default.

       -root   Draw on the root window.

       -install
	       Install a private colormap for the window.

       -visual visual
	       Specify which visual to use.  Legal values are the name of a visual class, or the id number (decimal or hex) of a specific visual.

       -fps    Display	a  running  tally  of  how  many frames per second are being rendered.	In conjunction with -delay 0, this can be a useful
	       benchmark of your GL performance.

       -trees number_of_trees
	       Specify how much trees are drawn in the landscape.

       -count number_of_particles
	       Specify how much fire particles are drawn. A very special case is 0 wich means that you get rain !

       -size viewport_size
	       Viewport of GL scene is specified size if greater than 32 and less than screensize. Default value is 0, meaning full screensize.

       -texture
	       Show a textured ground and the trees. This is the default.

       -no-texture
	       Disables texturing the landscape. This implies that no trees are drawn.

       -shadows
	       Show a shadow for each particle on the ground. This is the default.

       -no-shadows
	       Disables the drawing of the shadows.

       -fog    Show a fog in the distance.

       -no-fog Disables the fog. This is the default.

       -wander Move the observer around the landscape. This is the default.

       -no-wander
	       Keep the fire centered on the screen.

       -trackmouse
	       Let the mouse be a joystick to change the view of the landscape.  This implies -no-wander.

       -no-trackmouse
	       Disables mouse tracking. This is the default.

       -wire   Draw a wireframe rendition of the fire: this will consist only of single-pixel lines for the triangles.

ENVIRONMENT

       DISPLAY to get the default host and display number.

       XENVIRONMENT
	       to get the name of a resource file that overrides the global resources stored in the RESOURCE_MANAGER property.

SEE ALSO

       X(1), xscreensaver(1)

COPYRIGHT

       Copyright (C) 2001 by Eric Lassauge.  Permission to use, copy, modify, distribute, and sell this software and  its  documentation  for  any
       purpose	is  hereby  granted without fee, provided that the above copyright notice appear in all copies and that both that copyright notice
       and this permission notice appear in supporting documentation.  No representations are made about the suitability of this software for  any
       purpose.  It is provided "as is" without express or implied warranty.

       The  original  code  for  this  hack  was  written  by  David Bucciarelli (tech.hmw@plus.it) and could be found in the demo package of Mesa
       (Mesa-3.2/3Dfx/demos/). This hack is the result of the merge of two of the David's demos (fire and rain).

AUTHOR

       David Bucciarelli <tech.hmw@plus.it> Eric Lassauge <lassauge@mail.dotcom.fr>

X Version 11							     03-Oct-01							   XScreenSaver(1)