PortAwareLayoutManager

Import it from @grafloria/engine.

Port-aware layout computation utilities

ts
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class PortAwareLayoutManager

Methods

• static assignPortSides( ports: PortInfo[], nodePositions: Map<string, { x: number; y: number }>, options: PortAwareLayoutOptions ): Map<string, PortSide> (static) — Assign ports to sides of their parent nodes
• static orderPorts( ports: PortInfo[], portAssignments: Map<string, PortSide>, nodePositions: Map<string, { x: number; y: number }>, links: Array<{ sourcePortId?: string; targetPortId?: string }>, options: PortAwareLayoutOptions ): Map<string, string[]> (static) — Order ports on each node to minimize edge crossings
• static calculatePortPositions( ports: PortInfo[], portAssignments: Map<string, PortSide>, portOrdering: Map<string, string[]>, nodeSizes: Map<string, { width: number; height: number }>, options: PortAwareLayoutOptions ): Map<string, { x: number; y: number; side: PortSide }> (static) — Calculate physical port positions on nodes
• static countEdgeCrossings( portPositions: Map<string, { x: number; y: number; side: PortSide }>, nodePositions: Map<string, { x: number; y: number }>, links: Array<{ sourcePortId?: string; targetPortId?: string }>, ports?: PortInfo[] ): number (static) — Count edge crossings for a given port configuration.

ports is what makes the fix possible: it maps a port back to its node, so the port's offset can be added to the node's origin. It is optional only for source compatibility — without it we cannot resolve the frame, so we fall back to the relative comparison rather than silently inventing a node position.

• static computePortLayout( ports: PortInfo[], nodePositions: Map<string, { x: number; y: number }>, nodeSizes: Map<string, { width: number; height: number }>, links: Array<{ sourcePortId?: string; targetPortId?: string }>, options: PortAwareLayoutOptions ): PortAwareLayoutResult (static) — Generate complete port-aware layout result