Bitmap bitmap = Bitmap.createBitmap(ToolUtils.dip2px(423), ToolUtils.dip2px(168), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
Path path = new Path();
//多边形的起点
path.moveTo(ToolUtils.dip2px(35) + percent * (width -ToolUtils.dip2px(45)), 0);
//lineto的坐标是绝对坐标，相对（0，0）
path.lineTo(percent * (width + ToolUtils.dip2px(25)), height);
path.lineTo(width, height);
path.lineTo(width,0);
path.close();
canvas.drawPath(path, paint);

vector画图
<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="32dp"
    android:height="26dp"
    android:viewportWidth="32"
    android:viewportHeight="26">
    <path
        android:fillColor="@color/white"
        android:pathData="M16,0l-16,26 32,0z" />//m起点,l是相对的起一个点的坐标
</vector>