Vista

A vista — the view of a model along a particular axis of interest, ready to be rendered as a diagram.

A vista is the single source of truth shared by every diagram exporter (SVG, cytoscape, sigma). It carries three node lists and one edge list:

• elementViews — wrappers around user-defined com.stigway.metamodels.highway.Elements; appear in spec-level and mixed diagrams.

• interfacePointViews — wrappers around com.stigway.metamodels.highway.InterfacePoints; the canonical sources/sinks of data flow.

• codeConstructViews — wrappers around com.stigway.metamodels.highway.CodeConstructs; appear in instruction- and function-level diagrams.

• edges — directed connections between any of the above, by id.

• dataFlowSegmentDags — analyzer data-flow DAGs at segment level. These are not ordinary instruction edges; renderers and transforms consume them when they need data-flow semantics.

Endpoints in edges reference views by their underlying entity's com.stigway.metamodels.highway.MetamodelEntity.id, which is auto-computed from the Kotlin val that holds the entity. Two views in the same vista that wrap the same entity would collide — the lookup table built from a vista's view lists must therefore be a 1:1 mapping (the loader enforces this).

The 5-axis pipeline identity (analysis type, depth, merge mode, diagram type, summary type) is not part of the vista — it's pipeline metadata carried alongside, e.g. by the engine's RenderableVista wrapper. The vista itself is just a graph.