66 lines
1.7 KiB
Dart
66 lines
1.7 KiB
Dart
import 'package:flutter/material.dart';
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import 'dart:math' as math;
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class LeafPatternPainter extends CustomPainter {
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@override
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void paint(Canvas canvas, Size size) {
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final random = math.Random(42); // Fixed seed for consistent pattern
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final leafCount = (size.width * size.height / 15000).round().clamp(10, 50);
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for (int i = 0; i < leafCount; i++) {
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final x = random.nextDouble() * size.width;
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final y = random.nextDouble() * size.height;
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final rotation = random.nextDouble() * 2 * math.pi;
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final scale = random.nextDouble() * 0.5 + 0.5; // 0.5 to 1.0
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final opacity = (random.nextDouble() * 0.15 + 0.05).clamp(
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0.05,
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0.2,
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); // 0.05 to 0.2
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canvas.save();
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canvas.translate(x, y);
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canvas.rotate(rotation);
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canvas.scale(scale);
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_drawLeaf(canvas, opacity);
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canvas.restore();
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}
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}
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void _drawLeaf(Canvas canvas, double opacity) {
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final paint =
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Paint()
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..color = Colors.green.shade800.withOpacity(opacity)
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..style = PaintingStyle.fill
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..strokeWidth = 1.0;
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final path = Path();
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// Leaf shape
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path.moveTo(0, 0);
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path.cubicTo(5, -10, 10, -15, 20, -20);
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path.cubicTo(10, -10, 5, -5, 0, 0);
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path.cubicTo(-5, -5, -10, -10, -20, -20);
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path.cubicTo(-10, -15, -5, -10, 0, 0);
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path.close();
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// Draw leaf
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canvas.drawPath(path, paint);
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// Draw vein
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paint.color = Colors.green.shade800.withOpacity(opacity * 1.5);
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paint.style = PaintingStyle.stroke;
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paint.strokeWidth = 0.5;
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final veinPath = Path();
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veinPath.moveTo(0, 0);
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veinPath.lineTo(0, -15);
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canvas.drawPath(veinPath, paint);
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}
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@override
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bool shouldRepaint(LeafPatternPainter oldDelegate) => false;
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}
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