Allows placing repeated labels on area of a polygon. All possible placements create grid of points. Only placements within given polygon are rendered.
alternating-grid creates pattern similar to bricks in a wall.
Very important is order in which grid is iterated and individual placements placed. The first point is polygon's interior. Subsequent placements go around interior in a spiral.
Only CollisionSymbolizer does not work this way, but rather iterates the grid in left-right top-down order.
These are basic use cases:
- Labeling areas in given density.
- Trying various positions around interior.
- Adding areas into collision detector by
CollisionSymbolizer.
Grid density can be controlled by grid-cell-width and grid-cell-height properties of the symbolizer.
grid-on-polygon-1-marker-alternating.xml
