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

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]

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.

-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 seconds.).

-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.

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.

X(1), xscreensaver(1)

Copyright © 2003 by Jon Dowdall. 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.

Jon Dowdall.