Class MapsuiRenderAssetCache

Namespace

EncDotNet.S100.Renderers.Mapsui

Assembly

EncDotNet.S100.Renderers.Mapsui.dll

Per-palette cache of processed-SVG symbol entries and rasterised pattern tiles produced by MapsuiDisplayListRenderer.

public sealed class MapsuiRenderAssetCache

Inheritance

object

MapsuiRenderAssetCache

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.ReferenceEquals(object, object)

object.ToString()

Remarks

Both MapsuiDisplayListRenderer's processed-SVG ("data URI" string post SvgProcessor.Process) and rasterised pattern-tile PNG caches were originally instance-scoped. Because every dataset processor constructs a fresh renderer on each Render() call, every palette toggle / time-step scrub / mariner-setting change re-paid the full SVG processing + PNG rasterization cost.

Lifting these caches into a dataset-processor-owned MapsuiRenderAssetCache instance lets re-renders of the same dataset reuse that work. The cache is keyed by palette name (Day/Dusk/ Night) so flipping between palettes does not invalidate sibling-palette entries: each palette gets its own slot, populated lazily on first access.

Processed SVG output depends on the active ColorPalette (the processor recolours fills/strokes), so per-palette segmentation is required for correctness.

The dictionaries are ConcurrentDictionary<TKey, TValue> to allow safe sharing if a future caller renders concurrently.