The passes list AOS/LOS times can be stale or computed for a different
station position, causing elevation curves to show -60° at pass start.
The independent search (refineEdge + sampleMutualPass) always computes
elevation for the actual positions. With posA now set to the exact
station position, the pass times should match the main page.
The refineEdge function re-computed boundaries using the grid-center
position (posA), which differs from the exact station position that
the passes list was computed with. This caused all passes to be
filtered out. Now we trust the pass list's AOS/LOS times directly
and just sample the elevation/azimuth curves.
If the main pass list (satelliteRepo.passes) is empty or the common
window check filters everything out, fall back to the independent
search algorithm so the user always gets results.
findMutualPasses was computing passes independently with its own
search algorithm, which produced different results from the main
page's getLeoPass. Now it directly reuses satelliteRepo.passes,
which is the same list shown on the main passes page. The only
additional computation is refining the common window for station B
and sampling elevation/azimuth curves.
Root cause: mutual search used the min-elevation threshold (default 10°)
as the AOS/LOS boundary, while the main radar uses the 0° horizon
(getLeoPass). With identical stations the windows therefore never
matched. Also, an in-progress pass was counted as a new one.
- AOS/LOS boundaries now at the 0° horizon (refined to 1s)
- Skip in-progress mutual windows at search start (like getLeoPass)
- Filter requires BOTH stations to reach their min elevation
- Default min elevation follows the main radar passes setting
- Elevation ring labels were inverted (90/60/30 from outer to inner);
now 30/60/90 correctly from outer ring to center
- Split track paths at the 0/360° azimuth wrap in both MutualRadarView
and main RadarView, so passes crossing due north no longer draw a
line straight across the plot
- ElevationCurveChart is now controlled (progress + onProgressChange)
- MutualRadarView shows shared time-cursor positions for both stations
and is draggable/tappable to move the cursor
- MutualPassCard owns a single dragProgress feeding both charts, so
dragging either chart moves the other in sync
- MutualViewModel is Activity-scoped, so returning from Radar keeps query results
- TrackSampleData gains time field for live cut-off
- Removed standalone mutual card from radar page
- RadarViewCompose draws optional dashed station-B track + current dot
- RadarScreen builds trackB from mutual data up to current time
- MutualPass now carries TrackSample (azimuth/elevation for both stations)
- New MutualRadarView: polar plot with elevation rings (30/60/90),
cardinal spokes, solid A-track vs dashed B-track, AOS/LOS markers
- Shown in expanded mutual pass card and radar page mutual card
Absolute epoch millis (~1.7e12) exceeds Float precision (ULP ~131s
at that magnitude), so 5s-spaced samples collapsed onto identical
x coordinates, producing a stepped/jagged curve. Use Long relative
time deltas (sample - start) before converting to Float.
- Fix cubic Bezier control points (proper Catmull-Rom to Bezier conversion)
- Refine AOS/LOS more robustly by walking from edge into the pass window
- Still 5s sampling for smooth curves
- Reduce sample interval from 10s to 5s for smoother curves
- Add refineEdge() to find exact AOS/LOS at 1s resolution
- Curve now starts/ends at the correct horizon-crossing points
- Pre-fill station A grid from settingsRepo.stationPosition
- Find ALL mutual passes per satellite (not just first)
- Fix Color.hashCode() -> Color.toArgb() for native canvas paint
- Use 2min gap between pass searches to avoid duplicates
Bug: OrbitalObject.getElevation() returns radians, but
MutualViewModel was comparing it directly with degree values
from the slider (10-90), causing no matches to be found.
Fix: add elevationDeg() helper that converts to degrees.
Also add Maidenhead grid square input support (4/6/8 chars)
alongside existing lat/lon fields. Grid takes priority when
filled.
Port satlover.de dual-station pass matching feature:
- New feature/mutual module with mutual pass data model
- MutualViewModel: compute overlapping passes for two stations
- ElevationCurveChart: Canvas-based dual elevation curve with drag
- MutualScreen: input form + results with expandable cards
- Navigation: add Mutual tab to bottom navigation bar
- i18n: add Chinese/English strings for new feature
atsunatsu