feDiffuseLighting
or
feSpecularLighting
.
fePointLight(z = unit(0, "npc"), default.units = "npc", zdim = "x", ...)
z
if given as
a numeric vector.
"x"
or "y"
. Determines the dimension to which
z
will be located relative to. This is necessary because R
graphics has no concept of a z-dimension.
fe
.
fe.point.light
object.
http://www.w3.org/TR/SVG/filters.html#fePointLightElement
filterEffect
, fe
,
feDiffuseLighting
, feSpecularLighting
.