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feat: smoother graph using 3 weighted avarages :O

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This commit is contained in:
zypherift
2026-03-05 00:17:47 +01:00
parent b3b40b5e39
commit 38f2837034
1 changed files with 30 additions and 6 deletions
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36
firka/lib/ui/phone/widgets/grade_chart.dart
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@@ -93,6 +93,27 @@ class _GradeChartState extends State<GradeChart> {
}
}
List<FlSpot> _smoothSpots(List<FlSpot> input) {
if (input.length < 3) return input;
final smoothed = <FlSpot>[];
for (var i = 0; i < input.length; i++) {
if (i == 0 || i == input.length - 1) {
smoothed.add(input[i]);
continue;
}
final prev = input[i - 1].y;
final curr = input[i].y;
final next = input[i + 1].y;
final blended = (0.25 * prev) + (0.5 * curr) + (0.25 * next);
smoothed.add(FlSpot(input[i].x, blended));
}
return smoothed;
}
@override
void didUpdateWidget(covariant GradeChart oldWidget) {
super.didUpdateWidget(oldWidget);
@@ -213,8 +234,10 @@ class _GradeChartState extends State<GradeChart> {
}
LineChartData avgData() {
var firstX = spots.first.x;
var lastX = spots.last.x;
final smoothedSpots = _smoothSpots(spots);
var firstX = smoothedSpots.first.x;
var lastX = smoothedSpots.last.x;
if (firstX == lastX) {
lastX = firstX + 1;
}
@@ -359,12 +382,12 @@ class _GradeChartState extends State<GradeChart> {
lineBarsData: [
LineChartBarData(
spots: spots,
spots: smoothedSpots,
isCurved: true,
curveSmoothness: 0.35,
curveSmoothness: 0.5,
showingIndicators: _touchedIndex != null ? [_touchedIndex!] : [],
gradient: LinearGradient(
colors: [for (final s in spots) colorForY(s.y)],
colors: [for (final s in smoothedSpots) colorForY(s.y)],
),
barWidth: 5,
isStrokeCapRound: true,
@@ -373,7 +396,8 @@ class _GradeChartState extends State<GradeChart> {
show: true,
gradient: LinearGradient(
colors: [
for (final s in spots) colorForY(s.y).withValues(alpha: 0.1),
for (final s in smoothedSpots)
colorForY(s.y).withValues(alpha: 0.1),
],
),
),