diff options
| author |   Aakash Solanki <tech2aks@gmail.com> | 2022-08-31 15:23:53 +0200 |
|---|---|---|
| committer | Aakash Solanki <tech2aks@gmail.com> | 2022-09-14 11:50:03 +0200 |
| commit | e39f2a69fde316b4e260c151757fb739494fbd56 (patch) | |
| tree | 3ea8a65eee101457264d0000b5bcf122d428b0b8 /lib/screen/paints/arc_painter.dart | |
| parent | 5957cfa0609ff57adfafa4538fb151d00f3c72e3 (diff) | |
Upload Flutter Instrument Cluster app
Instrument Cluster demo app which shows speedometer
tachometer guages, temperature and fuel bars and some
indicators like turn indicators, engine malfunction,
lights, cruise control, lane assist. KUKSA.VAL is the
data source for the widgets.
This app depends on several plugins and all the plugins
have an OSI-approved license.
Bug-AGL: SPEC-4543
Change-Id: I2698c66f9d8d824690ae7e567ca7c93ceeb17e08
Signed-off-by: Aakash Solanki <tech2aks@gmail.com>
Diffstat (limited to 'lib/screen/paints/arc_painter.dart')
| -rw-r--r-- | lib/screen/paints/arc_painter.dart | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/lib/screen/paints/arc_painter.dart b/lib/screen/paints/arc_painter.dart new file mode 100644 index 0000000..66e38d4 --- /dev/null +++ b/lib/screen/paints/arc_painter.dart @@ -0,0 +1,116 @@ +// 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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