xscreensaver(1)
NAME
glforestfire - draws a GL animation of sprinkling firelike 3D triangles
SYNOPSIS
glforestfire [-display host:display.screen] [-window] [-root] [-visual visual] [-delay microseconds] [-count number_of_particles] [-trees number_of_trees] [-size view_ port_size] [-texture] [-no-texture] [-shadows] [-no-shad ows] [-fog] [-no-fog] [-wireframe] [-no-wireframe] [-wan der] [-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 trian
gles.
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_MAN
AGER property.
SEE ALSO
COPYRIGHT
Copyright © 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 Buc
ciarelli (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 <las
sauge@mail.dotcom.fr>