CashFlow, A Visualization Framework for 3D Flow - Studierstube ...

Implementation4.6. Implementation of Data Consumers2 .... cubic mappingAll values in the interval are mapped cubical to the output value using a Hermitcubic interpolation. The slope at the begin and the slope at the end of the intervalis defined in the field lookup_value_in_spline, which is ignored if no cubic mappingis used. The values in field lookup_value_in_spline accord to arctan(α)with α as the angle of the tangent.In our example the input interval for the cubic mapping is [0..3), the outputinterval is [1..6) and the slope are 0 at the first bound and −1 at the secondbound. The slope value 0 results in a horizontal tangent, while the slope valueof −1 leads to an tangent declined with is −45.SoCubicDataMapperNode iv–file#Inventor V2.0 asciiSoCubicDataMapperNode {fields [SoSFString scalarIn_Key,SoSFString scalarOut_Key,SoMFInt32 lookup_value_in,SoMFInt32 lookup_value_out,SoMFInt32 lookup_kind,SoMFInt32 lookup_value_in_spline ]scalarIn_KeyscalarOut_Key"myVirtualArray_from_Loader""myVirtualArray_after_Mapping"lookup_value_in [ 0 3 7 9 ]lookup_value_out [ 1 6 4 4 ]lookup_kind [ 2 1 0 ]# 0... constant 1...linear 2...cubic}lookup_value_in_spline [ 0 -1 ]# only used if lookup_kind is "2"CashFlow iv–file95