Function deriveAnnotationMinScale

deriveAnnotationMinScale(extent, textCount, maxFontSize): number
Derives a minimum scale for annotation visibility based on extent and text density.
Parameters
- extent: Extent
  The extent of the annotation layer.
- textCount: number
  The total number of text elements.
- maxFontSize: number
  The maximum font size used in the annotations.
Returns number
The calculated minimum scale.