105 lines
2.7 KiB
Dart
105 lines
2.7 KiB
Dart
import 'package:flutter/material.dart';
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class ThermalHeatmap extends StatelessWidget {
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final List<double> temperatures;
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const ThermalHeatmap({super.key, required this.temperatures});
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@override
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Widget build(BuildContext context) {
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return Center(
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child: Container(
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width: 310,
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height: 310,
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decoration: BoxDecoration(
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borderRadius: BorderRadius.circular(18),
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border: Border.all(
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color: const Color.fromRGBO(56, 142, 60, 1).withOpacity(0.6),
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width: 3,
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),
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boxShadow: [
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BoxShadow(
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color: const Color.fromRGBO(56, 142, 60, 1).withOpacity(0.15),
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blurRadius: 8,
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spreadRadius: 1,
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offset: Offset(0, 3),
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),
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],
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),
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child: ClipRRect(
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borderRadius: BorderRadius.circular(18),
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child: SizedBox(
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width: 300,
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height: 300,
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child: CustomPaint(
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painter: _ThermalPainter(temperatures),
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),
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),
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),
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),
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);
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}
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}
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class _ThermalPainter extends CustomPainter {
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final List<double> temps;
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_ThermalPainter(this.temps);
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@override
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void paint(Canvas canvas, Size size) {
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final cellWidth = size.width / 8;
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final cellHeight = size.height / 8;
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final blurPaint = Paint()
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..isAntiAlias = true
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..maskFilter = const MaskFilter.blur(BlurStyle.normal, 2);
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for (int y = 0; y < 8; y++) {
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for (int x = 0; x < 8; x++) {
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int i = y * 8 + x;
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double temp = i < temps.length ? temps[i] : 0.0;
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final color = _getColorForTemp(temp);
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final rect = Rect.fromLTWH(
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x * cellWidth,
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y * cellHeight,
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cellWidth,
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cellHeight,
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);
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canvas.drawRect(rect, blurPaint..color = color.withOpacity(0.95));
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}
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}
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// Garis putih di tengah dihilangkan (dihapus)
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}
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Color _getColorForTemp(double t) {
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if (t <= 20) {
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return Colors.blue;
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} else if (t <= 25) {
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double ratio = (t - 20) / 5;
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return Color.lerp(Colors.blue, Colors.yellow, ratio)!;
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} else if (t <= 28) {
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double ratio = (t - 25) / 3;
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return Color.lerp(Colors.red, Colors.yellow, ratio)!;
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} else if (t < 30) {
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double ratio = (t - 28) / 2;
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return Color.lerp(Colors.blue, Colors.red, ratio)!;
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} else {
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return Colors.red;
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}
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}
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@override
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bool shouldRepaint(covariant _ThermalPainter oldDelegate) {
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if (oldDelegate.temps.length != temps.length) return true;
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for (int i = 0; i < temps.length; i++) {
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if (oldDelegate.temps[i] != temps[i]) return true;
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}
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return false;
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}
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}
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