davide.trentin/KMPCharts
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Author SHA1 Message Date
dtrentin
99f7ee1252 fix(axis): show negative X values instead of clamping to 0s 
formatTimeSec coerceAtLeast(0L) caused all pre-T0 ticks to display "0s".
Now shows -5s, -1:30, -1:02:30 for negative elapsed time.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-05-21 09:02:52 +02:00
dtrentin
554b67e630 refactor(buffer): MIN_MAX tier binning, remove MEAN lod mode 
- TieredBuffer: replace MEAN binning with MIN_MAX (min+max per bin).
  Mathematically composable: MIN(bin_mins)=global_MIN, MAX(bin_maxes)=global_MAX.
  Eliminates tier-boundary visual artifacts. TIER1/TIER2 capacity doubled (2 samples/bin).
- LodMode: remove MEAN. Only MIN_MAX and LTTB remain.
  MEAN introduced values never present in raw signal — disinformation for sensor data.
- ChartConfig: default lodMode changed to MIN_MAX.
- Version: 0.4.1-SNAPSHOT → 0.5.0-SNAPSHOT

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-05-21 08:57:58 +02:00
dtrentin
b9ee5ddfa3 Initial commit: chart-realtime KMP library v0.4.1-SNAPSHOT 
- RealtimeChart composable with Canvas-based rendering
- TieredBuffer: 3-tier ring buffer (5min full-rate, 10min @10Hz, 45min @1Hz) for 1h data support with ~5MB footprint
- LodDecimator: MEAN / MIN_MAX / MIN_MAX(default) / LTTB render-time decimation
- AxisRenderer: X/Y axis with INSIDE/BESIDE/HIDDEN label modes, T0-relative timestamps, scientific notation
- SignalRenderer: clipRect-bounded path rendering with LoD
- ChartTheme: Material3-compatible dynamic theming (light/dark)
- package: dev.dtrentin.chart

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-05-21 01:48:51 +02:00