drawPath method
Implementation
void drawPath(Canvas canvas, Size size, List<RealChartPoint> realPoints) {
var linePaint = Paint()
..color = lineColor
..style = PaintingStyle.stroke
..strokeWidth = lineWidth;
var path = Path();
var l = realPoints.length;
for (var i = 0; i < l; i++) {
var p = realPoints[i].point;
if (i == 0) {
path.moveTo(p.x, p.y);
} else {
path.lineTo(p.x, p.y);
}
}
canvas.drawPath(path, linePaint);
}