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<H1><A ID="SECTION00110000000000000000"> Texturing Functions</A> </H1>

<P> <BR> <IMG STYLE="height: 196.25ex; vertical-align: -0.57ex; " SRC="img1.png" ALT="
\begin{defkey}{blotch}{{\em BlendFactor surface}}
Produces a mildly interesting....
.....result in a great portion of
the default surface characteristics.
\end{defkey}
"> <BR>

<P> <BR> <IMG STYLE="height: 2.17ex; vertical-align: 176.55ex; " SRC="img2.png" ALT="
\begin{defkey}{bump}{{\em scale}}
Apply a random bump map. The point of interse....
....result is added to the normal vector at the point of intersection.
\end{defkey}
"> <BR> Using an image texture applied to the ``bump'' component offers a more direct way to control the modification of surface normals (see below).

<P> <BR> <IMG STYLE="height: 2.38ex; vertical-align: 176.27ex; " SRC="img3.png" ALT="
\begin{defkey}{checker}{$\ensuremath{<}${\em Surface}$\ensuremath{>}$}
Applies a...
..... integral plane in texture space
(e.g., {\tt translate 0 0 0.1}).
\end{defkey}
"> <BR>

<P> <BR> <IMG STYLE="height: 2.17ex; vertical-align: 176.19ex; " SRC="img4.png" ALT="
\begin{defkey}{cloud}{{\em scale H $\lambda$\ octaves cthresh lthresh tscale}}
...
...thresh - (lthresh - cthresh)(1 - limb){{tscale}
\end{displaymath}\end{defkey}
"> <BR>

<P> <BR> <IMG STYLE="height: 2.17ex; vertical-align: 176.41ex; " SRC="img5.png" ALT="
\begin{defkey}{fbm}{{\em offset scale H $\lambda$\ octaves thresh}
[{\em colorm....
.....scale the ambient and diffuse components of the
object's surface.
\end{defkey}
"> <BR>

<P> <BR> <IMG STYLE="height: 2.38ex; vertical-align: 176.40ex; " SRC="img6.png" ALT="
\begin{defkey}{fbmbump}{{\em offset scale H $\lambda$\ octaves}}
Similar to the....
.....odifying the color of
a surface, this texture acts as a bump map.
\end{defkey}
"> <BR>

<P> <BR> <IMG STYLE="height: 2.17ex; vertical-align: 176.68ex; " SRC="img7.png" ALT="
\begin{defkey}{gloss}{{\em glossiness}}
Gives reflective surfaces a glossy appe....
.....ng
should be used to render scenes that make use of this texture.
\end{defkey}
"> <BR>

<P> <BR> <IMG STYLE="height: 2.17ex; vertical-align: 176.55ex; " SRC="img8.png" ALT="
\begin{defkey}{marble}{[{\em colormap}]}
Gives a surface a marble-like appearan....
.....xture to
control the density and orientation of the marble veins.
\end{defkey}
"> <BR>

<P> <BR> <IMG STYLE="height: 2.38ex; vertical-align: 176.40ex; " SRC="img9.png" ALT="
\begin{defkey}{sky}{{\em scale H $\lambda$\ octaves cthresh ltresh}}
Similar t...
...opaque. Below {\em lthresh},
the surface is totally transparent.
\end{defkey}
"> <BR>

<P> <BR> <IMG STYLE="height: 2.17ex; vertical-align: 176.68ex; " SRC="img10.png" ALT="
\begin{defkey}{stripe}{$\ensuremath{<}${\em Surface}$\ensuremath{>}$\ {\em size ...
......urface; if positive, it will appear to stand
out of the surface.
\end{defkey}
"> <BR> Mapping functions are described below.

<P> <BR> <IMG STYLE="height: 2.17ex; vertical-align: 176.68ex; " SRC="img11.png" ALT="
\begin{defkey}{wood}{}
Gives a surface a wood-like appearance. The feature size....
..... to
scale the texture in order to achieve the desired appearance.
\end{defkey}
"> <BR>

<P>

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