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

Chapter 4ImplementationFigure 4.1: CashFlow Data flow modelThe general class hierarchy of CashFlow is shown in figure 4.1 and will be introducedin the following chapters. A full collection of all CashFlow classes is listed insection 4.7 on page 97. The concept of filter, mapper and render nodes used on the followingpages were introduced in section 2 page 3 and section 3 page 38. This is a briefsummery of nodes used in figure 4.1, while the details were introduced in chapter 3 onpage 38 .• SoCfDataConsumer (fig 4.1: Dataconsumer)This abstract class provides an interface for all nodes processing data. Any outputdata can only be stored in existing nodes. No SoCfDataConsumer node maycreate new SoMultiDataNodes, SoDataAccessNodes or SoBaseGrid nodes andinsert them into the scene graph. The reason for that policy is, that otherwisescripting would be difficult or even impossible.– FilterA Filter selects part of the raw data at runtime using a virtual array. Thefilter is implemented as SoDataAccessNode and SbDataAccessMap.– SoCfMapperNode (fig 4.1: Mapper)66