rgl.useNULL


This function checks the <code>"rgl.useNULL"</code> option if present, or the
<span class="env">RGL_USE_NULL</span> environment variable if it is not.  If the value is
<code>TRUE</code> or a string which matches &#147;yes&#148; or &#147;true&#148;
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.

Duncan Murdoch

3D Visualization Using OpenGL

rgl.useNULL function


This function checks the <code>"rgl.useNULL"</code> option if present, or the
<span class = "env">RGL_USE_NULL</span> environment variable if it is not.  If the value is
<code>TRUE</code> or a string which matches &#147;yes&#148; or &#147;true&#148;
in a case-insensitive test, <code>TRUE</code> is returned.


rgl.useNULL: Report default use of null device.

Description

Usage

Arguments

Value

See Also

Examples