mirrorblob



XScreenSaver(1)                                                XScreenSaver(1)




NAME

       mirrorblob - Draws a wobbly blob that distorts the image behind it.


SYNOPSIS

       mirrorblob  [-display  host:display.screen]  [-visual visual] [-window]
       [-root] [-wire] [-delay number] [-fog]  [-walls]  [-colour]  [-texture]
       [-bgimage]  [-offset_texture]  [-blend]  [-antialias]  [-x_res  number]
       [-y_res number] [-field_points number] [-hold_frames number] [-fps]


DESCRIPTION

       Draws a wobbling blob, making use of alpha blending, fog, textures, and
       lighting,  plus  a ‘‘frames per second’’ meter so that you can tell how
       fast your graphics card is... Requires OpenGL.


OPTIONS

       -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.

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

       -root   Draw on the root window.  -wire Render in wireframe instead  of
               solid.

       -delay number
               Per-frame  delay,  in  microseconds.  Default: 10000 (0.01 sec-
               onds.).

       -fog | -no-fog
               Whether to enable fog.

       -walls | -no-walls
               Add walls for blob to hit.

       -colour | -no-colour
               Draw coloured blob.  If also textured, the  texture  will  have
               color mixed in.

       -texture | -no-texture
               Whether to wrap a texture image on the blob.

       -bgimage | -no-bgimage
               Whether to also draw the texture on the background.

       -offset_texture | -no-offset_texture
               Whether  to ofset the texture calculations to only use a region
               of the image
                under the blob.  This works well when blend is enabled.

       -blend | -no-blend
               Whether to enable blending. (see also offset_texture above)

       -antialias | -no-antialias
               Whether to anti-alias lines.

       -x_res number
               Number of verticies around the middle row of the blob (see also
               y_res).

       -y_res number
               Number of rows of verticies used to calculatethe blob, combined
               with x_res to
                indirectly determine the number  of  triangles  used  to  draw
               blob.  Larger
                numbers  give  a  smoother blob but increase calculation times
               exponentially.

       -field_points number
               Number of points used to distort the blob.

       -hold_frames number
               Number of frames between changing images.

       -fade_speed number
               Speed at which fading occurs when changing images.

       -fps | -no-fps
               Whether to show a frames-per-second display at  the  bottom  of
               the screen.


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 © 2003 by Jon Dowdall.  Permission to use, copy, modify, dis-
       tribute,  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 per-
       mission 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.


AUTHOR

       Jon Dowdall.



X Version 11                                                   XScreenSaver(1)

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