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// SPDX-License-Identifier: Apache-2.0
import 'dart:math';
import 'package:flutter/material.dart';
class LeftPainter extends CustomPainter {
LeftPainter(
{required this.radi,
required this.currentValue,
required this.bottomPadding,
required this.color});
late final double radi;
late final double currentValue;
late final double bottomPadding;
late final Color color;
Offset getLeftPoints(Size size, double radius, double value) {
final double diam = 2 * radius;
final double arcHalfAngle = asin(size.height / diam); //thetha
final double currentAngle = (arcHalfAngle * value) / 50; //alpha
return Offset(
(radi * cos(arcHalfAngle)) +
(size.width) -
(radi * cos(arcHalfAngle - currentAngle)),
(radi * sin(arcHalfAngle)) + (radi * sin(arcHalfAngle - currentAngle)));
}
@override
void paint(Canvas canvas, Size size) {
Offset startPoint = getLeftPoints(size, radi, bottomPadding);
final paint = Paint()
..color = const Color.fromARGB(255, 49, 48, 48)
..style = PaintingStyle.stroke
..strokeCap = StrokeCap.round
..strokeWidth = radi / 15;
final paint2 = Paint()
..color = color
..strokeCap = StrokeCap.round
..style = PaintingStyle.stroke
..strokeWidth = radi / 15;
final path = Path()
..moveTo(startPoint.dx, startPoint.dy)
..arcToPoint(Offset(size.width, 0), radius: Radius.circular(radi));
canvas.drawPath(path, paint);
final path2 = Path()
..moveTo(startPoint.dx, startPoint.dy)
..arcToPoint(
getLeftPoints(size, radi,
bottomPadding + ((1 - (bottomPadding / 100)) * currentValue)),
radius: Radius.circular(radi));
canvas.drawPath(path, paint);
canvas.drawPath(path2, paint2);
}
@override
bool shouldRepaint(covariant CustomPainter oldDelegate) => true;
}
class RightPainter extends CustomPainter {
RightPainter(
{required this.radi,
required this.currentValue,
required this.bottomPadding,
required this.color});
final double radi;
final double currentValue;
late final double bottomPadding;
late final Color color;
Offset getRightPoints(Size size, double radius, double value) {
final double diam = 2 * radius;
final double arcHalfAngle = asin(size.height / diam); //thetha
final double currentAngle = (arcHalfAngle * value) / 50; //alpha
return Offset(
(radi * cos(arcHalfAngle - currentAngle)) - (radi * cos(arcHalfAngle)),
(radi * sin(arcHalfAngle)) + (radi * sin(arcHalfAngle - currentAngle)));
}
@override
void paint(Canvas canvas, Size size) {
Offset startPoint = getRightPoints(size, radi, bottomPadding);
final paint = Paint()
..color = const Color.fromARGB(255, 49, 48, 48)
..style = PaintingStyle.stroke
..strokeCap = StrokeCap.round
..strokeWidth = radi / 15;
final paint2 = Paint()
..color = color
..style = PaintingStyle.stroke
..strokeCap = StrokeCap.round
..strokeWidth = radi / 15;
final path = Path()
..moveTo(startPoint.dx, startPoint.dy)
..arcToPoint(
const Offset(0, 0),
radius: Radius.circular(radi),
clockwise: false,
);
final path2 = Path()
..moveTo(startPoint.dx, startPoint.dy)
..arcToPoint(
getRightPoints(size, radi,
bottomPadding + ((1 - (bottomPadding / 100)) * currentValue)),
radius: Radius.circular(radi),
clockwise: false);
canvas.drawPath(path, paint);
canvas.drawPath(path2, paint2);
}
@override
bool shouldRepaint(covariant CustomPainter oldDelegate) => true;
}
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