rgl.useNULL

This function checks the <code>"rgl.useNULL"</code> option if present, or the
<env>RGL_USE_NULL</env> environment variable if it is not.  If the value is
<code>TRUE</code> or a string which matches <dquote>yes</dquote> or <dquote>true</dquote>
in a case-insensitive test, <code>TRUE</code> is returned.

Provides medium to high level functions for 3D interactive graphics, including
    functions modelled on base graphics (plot3d(), etc.) as well as functions for 
    constructing representations of geometric objects (cube3d(), etc.).  Output
    may be on screen using OpenGL, or to various standard 3D file formats including 
    WebGL, PLY, OBJ, STL as well as 2D image formats, including PNG, Postscript, SVG, PGF.

rgl.useNULL: Report default use of null device.

Description

Usage

Arguments

Value

See Also

Examples