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

       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-wire-
       frame] [-wander] [-no-wander] [-trackmouse] [-no-trackmouse] [-fps] [-no-fps]

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

       glforestfire accepts the following options:

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

       -root   Draw on the root window.

	       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 con-
	       junction 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  screen-
	       size. Default value is 0, meaning full screensize.

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

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

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

	       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.

	       Keep the fire centered on the screen.

	       Let  the  mouse	be  a joystick to change the view of the landscape.  This implies

	       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.

       DISPLAY to get the default host and display number.

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

       X(1), xscreensaver(1)

       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).

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

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