getPaint method
获取绘制时的Paint对象
Implementation
Paint getPaint({double? opacity}) {
return Paint()
..color = color.withOpacity(opacity ?? 1.0)
..strokeWidth = strokeWidth
..style = PaintingStyle.stroke
..strokeCap = StrokeCap.round
..strokeJoin = StrokeJoin.round
..isAntiAlias = true;
}