Master's Thesis - Computer Graphics and Visualization - TU Delft

The second problem is about how to represent a pipeline. In fact the pipeline is just a sequence of
macro modules. For example, the DPD simulation program of Culgi could be divided into three parts,
which are ‘build box’, ‘view’, and ‘simulation’. So the DPD template just create three Macro Nodes,
which are box (corresponding to build box), view, and simulation.
Class ConceptInterface is used to implement the Concept Model. It has two important data member,
which are supernodes and runConceptNodes. Member superNodes is a list of Macro nodes. In different
templates, superNodes should be different. In DPD simulation, Macro nodes are box, view, simulation.
Member runConceptNodes is a dictionary. The keys of this dictionary are the steps in the pipeline of
the simulation program. And the value of each key is a list of modules. When the program runs, the
system will execute the lists of modules according to the order of the keys. But for the modules that
belong to the same key, the order will be random. For example, if the record in this data member is
self.runConceptNodes = {
'1palette':[ node1, ],
'2createMolecules':[ node3,node2 ],
'3graphics':[
node4],
'4calculator':[ node5 ],
'5calculation':[ node8, node6, node7] ,
'6LaunchSimulation':[ node9] ,
}
The
order would be “node1, node3, node2, node4, node5, node8, node6, node7, node9”. But the order
like “node1, node2, node3, node4, node5, node6, node7, node8, node9” is also valid.
4.5.4 The Network Model
In the network model, the mechanism of the creation of a connection between two modules is needed.
This is implemented by a class connection, and class input ports and output ports. Appendix A shows
the architecture of the implementation
of the Network Model. Because dataflow editors are quite
popular nowadays, we will not explain the implementation
in detail.
4.5.5 Transformations between
different models
Transformation means that an application made in one model is displayed
correctly in another model.
And with transformations, users can have different levels of view to an application.
Table 4-1 2 . The transforms among different models
From
To
Network Model Sequence Model Concept Model
Network Model -- Yes possible
Sequence Model possible -- possible
2 In Table 4-1, “--” means no transforms; “Yes” means this transform has been implemented; and
“Possible” means this transform is possible to implement, but not implemented yet.
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