Function: resolveGenericViewportVolumeId()

resolveGenericViewportVolumeId(viewport, targetId?): string | undefined

Resolves the cache volume id backing a generic ("next" / PLANAR_NEXT) viewport target.

VOI tooling and the colorbar identify a target by its display-set dataId, which is NOT the cache volume id - the volume id ends in :<dataId>. This maps the dataId to the matching actor's referencedId (the real volume id): an exact match first, then the <scheme>:<dataId> suffix. Anchoring to the : separator avoids the unintended-actor matches a loose substring search could produce in a fusion viewport. When no targetId is given (or it matches nothing) it falls back to the bound default actor's referenced volume.

This idiom was previously duplicated verbatim in getViewportModality and isViewportPreScaled; it now lives here as the single source of truth and feeds the shared getScalingDescriptor.

Parameters

• viewport: Viewport

• targetId?: string

Returns

string | undefined

Defined in

packages/core/src/utilities/resolveGenericViewportVolumeId.ts:25