Function: pickIntensityPointInSlab()
pickIntensityPointInSlab(
viewport,worldPoint):Types.Point3|null
Picks the extremal-intensity world point along a viewport's view-plane normal within its rendered intensity-projection slab.
An intensity-projection (MIP/MinIP) viewport shows, at each pixel, the
extremal voxel anywhere inside the slab - so a world point derived from a
click lies on the arbitrary central slab plane, not on the anatomy the
user sees. This helper resamples the source volume along the normal
through worldPoint (clamped to the slab) and returns the location of
the maximum (MIP) or minimum (MinIP) intensity, i.e. the point the
projection actually displayed.
Works exclusively through the Generic ("next") viewport surface: the slab and blend mode are read from the source display-set presentation and the volume is sampled directly from the cache (no legacy viewport APIs).
On equal intensities the sample closest to the central plane wins, so uniform regions keep the point where the user clicked.
Returns null when the viewport does not render an intensity-projection slab, or when no volume/plane/finite sample is available.
Parameters
• viewport: Viewport
• worldPoint: Point3
Returns
Types.Point3 | null