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Document LOS frequency and k-factor math

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Show the connector frequency right next to the Frequency label, display the derived k value, and keep the info dialog tied to the exact
This commit is contained in:
just_stuff_tm
2026-02-23 02:42:58 -05:00
parent fc55fb98ce
commit 677b25908a
32 changed files with 747 additions and 41 deletions
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lib/screens/line_of_sight_map_screen.dart
+25 -27
View File
@@ -471,6 +471,9 @@ class _LineOfSightMapScreenState extends State<LineOfSightMapScreen> {
fontSize: 10,
fontWeight: FontWeight.w600,
),
terrainLabel: context.l10n.losLegendTerrain,
losBeamLabel: context.l10n.losLegendLosBeam,
radioHorizonLabel: context.l10n.losLegendRadioHorizon,
),
),
)
@@ -504,7 +507,7 @@ class _LineOfSightMapScreenState extends State<LineOfSightMapScreen> {
child: Row(
children: [
Text(
'Frequency',
context.l10n.losFrequencyLabel,
style: TextStyle(
fontSize: 11,
color: Colors.grey[700],
@@ -531,7 +534,7 @@ class _LineOfSightMapScreenState extends State<LineOfSightMapScreen> {
constraints: const BoxConstraints(),
icon: const Icon(Icons.info_outline, size: 16),
color: Colors.grey[600],
tooltip: 'View calculation details',
tooltip: context.l10n.losFrequencyInfoTooltip,
onPressed: () {
_showFrequencyInfoDialog(
context,
@@ -963,27 +966,13 @@ class _LineOfSightMapScreenState extends State<LineOfSightMapScreen> {
showDialog<void>(
context: context,
builder: (dialogContext) => AlertDialog(
title: const Text('Radio horizon calculation'),
content: Text.rich(
TextSpan(
children: [
TextSpan(
text:
'Starting from k=$baselineK at ${baselineFreq.toStringAsFixed(3)} MHz, ',
),
const TextSpan(text: 'the calculation multiplies the offset by '),
TextSpan(
text:
'0.15 × (frequency − ${baselineFreq.toStringAsFixed(3)}) / ${baselineFreq.toStringAsFixed(3)} ',
),
TextSpan(
text:
'to get k ≈ ${kFactor.toStringAsFixed(3)} for the current ${frequencyMHz.toStringAsFixed(3)} MHz band, ',
),
const TextSpan(
text: 'which defines the curved radio horizon cap.',
),
],
title: Text(context.l10n.losFrequencyDialogTitle),
content: Text(
context.l10n.losFrequencyDialogDescription(
baselineK,
baselineFreq,
frequencyMHz,
kFactor,
),
),
actions: [
@@ -1009,12 +998,18 @@ class _LosProfilePainter extends CustomPainter {
final String distanceUnit;
final String heightUnit;
final TextStyle badgeTextStyle;
final String terrainLabel;
final String losBeamLabel;
final String radioHorizonLabel;
const _LosProfilePainter({
required this.samples,
required this.distanceUnit,
required this.heightUnit,
required this.badgeTextStyle,
required this.terrainLabel,
required this.losBeamLabel,
required this.radioHorizonLabel,
});
@override
@@ -1148,7 +1143,10 @@ class _LosProfilePainter extends CustomPainter {
return oldDelegate.samples != samples ||
oldDelegate.distanceUnit != distanceUnit ||
oldDelegate.heightUnit != heightUnit ||
oldDelegate.badgeTextStyle != badgeTextStyle;
oldDelegate.badgeTextStyle != badgeTextStyle ||
oldDelegate.terrainLabel != terrainLabel ||
oldDelegate.losBeamLabel != losBeamLabel ||
oldDelegate.radioHorizonLabel != radioHorizonLabel;
}
void _drawUnitBadge(Canvas canvas, Size size) {
@@ -1175,9 +1173,9 @@ class _LosProfilePainter extends CustomPainter {
const legendPadding = 6.0;
final entries = [
_LegendEntry('Terrain', terrainColor),
_LegendEntry('LOS beam', losColor),
_LegendEntry('Radio horizon', horizonColor),
_LegendEntry(terrainLabel, terrainColor),
_LegendEntry(losBeamLabel, losColor),
_LegendEntry(radioHorizonLabel, horizonColor),
];
final textStyle = badgeTextStyle.copyWith(