QgsProcessingParameterNumber|altitude|Altitude of the sun in degrees above the horizon|QgsProcessingParameterNumber.Double|30.0|True|0.0|90.0
QgsProcessingParameterNumber|azimuth|Azimuth of the sun in degrees to the east of north|QgsProcessingParameterNumber.Double|270.0|True|0.0|360.0
QgsProcessingParameterNumber|zscale|Factor for exaggerating relief|QgsProcessingParameterNumber.Double|1.0|True|None|None
QgsProcessingParameterNumber|scale|Scale factor for converting horizontal units to elevation units|QgsProcessingParameterNumber.Double|1.0|True|None|None