| The ShadedRelief element selects the application of relief shading (or ?hill
shading?) to an image for a three-dimensional visual effect. It is defined
as:
<xs:element name="ShadedRelief">
<xs:complexType>
<xs:sequence>
<xs:element ref="sld:BrightnessOnly" minOccurs="0"/>
<xs:element ref="sld:ReliefFactor" minOccurs="0"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="BrightnessOnly" type="xs:boolean"/>
<xs:element name="ReliefFactor" type="xs:double"/>
Exact parameters of the shading are system-dependent (for now). If the
BrightnessOnly flag is ?0? (false, default), the shading is applied to the
layer being rendered as the current RasterSymbol. If BrightnessOnly is ?1?
(true), the shading is applied to the brightness of the colors in the
rendering canvas generated so far by other layers, with the effect of
relief-shading these other layers. The default for BrightnessOnly is ?0?
(false). The ReliefFactor gives the amount of exaggeration to use for the
height of the ?hills.? A value of around 55 (times) gives reasonable
results for Earth-based DEMs. The default value is system-dependent.
author:
iant |