LinearGraphView.java 文件源码

private void drawScrollLine(Canvas canvas) {
    Point startp;
    Point endp;
    for (int i = 0; i < mPoints.length - 1; i++) {
        startp = mPoints[i];
        endp = mPoints[i + 1];
        int wt = (startp.x + endp.x) / 2;
        Point p3 = new Point();
        Point p4 = new Point();
        p3.y = startp.y;
        p3.x = wt;
        p4.y = endp.y;
        p4.x = wt;

        Path path = new Path();
        path.moveTo(startp.x, startp.y);
        path.cubicTo(p3.x, p3.y, p4.x, p4.y, endp.x, endp.y);
        canvas.drawPath(path, mPaint);
    }
}