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R10646/Dashboard/lib/widgets/arrow.dart
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arrow.dart
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import 'package:flutter/material.dart';
import 'package:arrow_path/arrow_path.dart';
//import 'package:student/model/Cellulo.dart';
import "dart:math" as math;
class Arrow extends CustomPainter {
// <-- CustomPainter class
var celluloxPosition;
var celluloyPosition;
var coeffScreenMapWidth;
var coeffScreenMapHeight;
double directionx;
double directiony;
Offset celluloyM;
Offset celluloxM;
Arrow(this.celluloxPosition, this.celluloyPosition, this.coeffScreenMapWidth,
this.coeffScreenMapHeight, this.directionx, this.directiony) {
celluloxM = Offset(celluloxPosition[0] * coeffScreenMapWidth,
celluloxPosition[1] * coeffScreenMapHeight);
celluloyM = Offset(celluloyPosition[0] * coeffScreenMapWidth,
celluloyPosition[1] * coeffScreenMapHeight);
/*
directionx = 0;
directiony = 0;
if (math.sqrt(math.pow(directionx, 2) + math.pow(directiony, 2)) < 80)
directionx = 0;
else if (directionx > 40)
directionx = 1;
else if (directionx < -40) {
directionx = -1;
} else {
directionx = 0;
}
if (math.sqrt(math.pow(directionx, 2) + math.pow(directiony, 2)) < 80)
directiony = 0;
else if (directiony > 40)
directiony = 1;
else if (directiony < -40) {
directiony = -1;
} else {
directiony = 0;
}
*/
if (directionx > 40) directionx = 40;
if (directionx < -40) directionx = -40;
if (directiony > 40) directiony = 40;
if (directiony < -40) directiony = -40;
}
@override
void paint(Canvas canvas, Size size) {
// print('ddddd' + directiony.toString());
Path path;
Path path2;
Paint paintblue = Paint()
..color = Colors.blue
..style = PaintingStyle.stroke
..strokeCap = StrokeCap.round
..strokeJoin = StrokeJoin.round
..strokeWidth = 3.0;
Paint paintRed = Paint()
..color = Colors.red
..style = PaintingStyle.stroke
..strokeCap = StrokeCap.round
..strokeJoin = StrokeJoin.round
..strokeWidth = 3.0;
if (directionx.abs() > 20) {
path = Path();
path.moveTo(celluloxM.dx - 10, celluloxM.dy - 10);
path.relativeCubicTo(0, 0, 0, 0, directionx, 0);
path = ArrowPath.make(path: path);
canvas.drawPath(path, paintRed);
}
if (directiony.abs() > 20) {
path2 = Path();
path2.moveTo(celluloyM.dx + 20, celluloyM.dy + 15);
path2.relativeCubicTo(0, 0, 0, 0, 0, directiony);
path2 = ArrowPath.make(path: path2);
canvas.drawPath(path2, paintblue);
}
//canvas.drawLine(p1, p2, paint);
}
@override
bool shouldRepaint(CustomPainter old) {
return false;
}
}
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