NAME
     TextureAtom - set texture of atoms
     TextureBond - set texture of bonds
     TextureDist - set texture of distances
     TexturePrim - set texture of primitives
     TextureInit - set initial texture

SYNOPSIS
     TextureAtom string expr expr expr
     TextureBond string expr expr expr
     TextureDist string expr expr expr
     TexturePrim string expr expr expr
     TextureInit string expr expr expr

DESCRIPTION
     The first four commands set the texture mapping
     parameters of all selected atoms, bonds, distances
     or primitives. TextureInit sets the initial
     texture mapping parameters used for new objects.

     The first parameter gives the name of a texture,
     the second paramter its scaling factor.

     The third parameter determines the amount of
     bumpiness of the surface. 0.0 results in a smooth
     surface, 1.0 in a very bumpy surface. The fourth
     paramter is a scaling factor for the bump pattern,
     a larger scaling factor will result in wider bumps.

     Texture mapping is not supported on screen, these
     parameters are used for preparing files for
     ray-tracing (PlotPOV).

     The texture name must appear in the texture definition
     file of POV-Ray (textures.inc). If a texture is
     selected, the attributes of this texture will override
     the colors and material properties selected otherwise.
     If the name has the extension ".gif", it is assumed to
     be the name of a GIF file which is used as image map.

     Giving a value of 'as is' for the texture name or
     less than 0.0 for any numerical argument will not
     change it, this is useful for changing only part of
     the parameters.

EXAMPLES
     TextureAtom 'Blood_Marble' 0.5 0.0 1.0
     TextureBond '' 1.0 0.5 1.0

SEE ALSO
     Select*, Color*, Material*, PlotPov

DATE
     991016
