Transfer Function Parser
Simple parser for transfer functions specified in an xml format for a QGradient.
An example transfer function might look like this:
<!DOCTYPE Gradient>
<gradientData spread="PadSpread" startX="0" startY="0.5" coordinateMode="StretchToDeviceMode" type="LinearGradient" endX="1" endY="0.5">
<stopData position="0.298828">
<colorData g="0" r="0" a="0" b="0"/>
</stopData>
<stopData position="0.311035">
<colorData g="100" r="0" a="76" b="0"/>
</stopData>
<stopData position="0.37207">
<colorData g="10" r="30" a="255" b="40"/>
</stopData>
</gradientData>