日常闲置重写(+3 files)，花了三个小时，感觉击键/操作效率还是要提升，可是我懒得学了……

JDrawing.java

import javax.swing.*;
import java.awt.*;
import java.awt.geom.Path2D;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.Arrays;
import java.util.stream.Collectors;

/**
 * Draw simple single-colored absolute SVG path without transformation using Java.
 * 
 * @author Yuuta
 */
public class JDrawing {
    public static void main(String... args) throws Throwable {
        final JFrame window = new JFrame();
        window.setTitle(args[0]);
        window.add(new DrawingPanel(g -> {
            draw(args[0], g);
        }));
        window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        window.setVisible(true);
    }

    private static void draw(String file, Graphics g) {
        final Path2D path2D = new Path2D.Double();

        try {
            try(BufferedReader reader = new BufferedReader(new FileReader(file))) {
                while(true) {
                    final String line = reader.readLine();
                    if(line == null) break;
                    final Double[] args = line.length() > 2 ? Arrays.stream(line.substring(2).split(","))
                            .map(Double::parseDouble)
                            .collect(Collectors.toList())
                            .toArray(new Double[]{}) : new Double[]{};
                    switch (line.charAt(0)) {
                        case 'M':
                            path2D.moveTo(args[0], args[1]);
                            break;
                        case 'C':
                            path2D.curveTo(args[0], args[1],
                                    args[2], args[3],
                                    args[4], args[5]);
                            break;
                        case 'L':
                            path2D.lineTo(args[0], args[1]);
                            break;
                        case 'H':
                            path2D.lineTo(args[0], path2D.getCurrentPoint().getY());
                            break;
                        case 'V':
                            path2D.lineTo(path2D.getCurrentPoint().getX(), args[0]);
                            break;
                        case 'Z':
                            path2D.closePath();
                            break;
                        default:
                            throw new UnsupportedOperationException(
                                    String.format("Unsupported command %s.\n", line.charAt(0)));
                    }
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        g.setColor(Color.BLACK);
        ((Graphics2D)g).fill(path2D);
    }

    private static class DrawingPanel extends JPanel {
        private final OnDrawCallback callback;

        public DrawingPanel(OnDrawCallback callback) {
            this.callback = callback;
        }

        @Override
        public void paint(Graphics g) {
            super.paint(g);
            callback.onDraw(g);
        }

        @FunctionalInterface
        public interface OnDrawCallback {
            void onDraw(Graphics g);
        }
    }
}

JDrawing1.java

import java.awt.*;
import java.awt.geom.Path2D; // SVG rendering
import java.io.*; // FileReader, IOExcept, BufferedReader
import javax.swing.*; // JFrame, JPanel

import static java.util.Arrays.stream;
import static java.util.stream.Collectors.toList;

class JDrawing1 {
  public static void main(String... args) throws IOException {
    for (String fp : args)
    try (BufferedReader ins = new BufferedReader(new FileReader(new File(fp)))) {
      svgPathUI(fp, drawPath(ins)).setVisible(true);;
    }
  }
  static JFrame svgPathUI(String title, Path2D path) {
    JFrame win = new JFrame();
    win.setTitle(title);
    win.setSize(fullSize(path.getBounds()));
    win.add(new DrawPanel((g) -> { g.setColor(Color.BLACK); ((Graphics2D)g).fill(path); }));
    win.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    return win;
  }
  static Dimension fullSize(Rectangle ra) { return new Dimension(ra.x+ra.width, ra.y+ra.height); }
  static Path2D drawPath(BufferedReader ins) throws IOException {
    Path2D path = new Path2D.Double();
    String sOperate = null; // no better Iterable for(:) wrapper, since hasNext() require a 1-item buffer
    while ((sOperate = ins.readLine()) != null) {
      char cmd = sOperate.charAt(0);
      int iA = 1+1/*' '*/;
      Double[] args = (sOperate.length()>iA)? stream(sOperate.substring(iA).split(",")).map(Double::parseDouble)
        .collect(toList()).toArray(new Double[]{}) : new Double[]{};
      executeSVGCmd(path, cmd, args);
    }
    return path;
  }
  /** Handle MLZ,HV,C cmds */
  static void executeSVGCmd(Path2D p, char cmd, Double[] a) {
    switch (cmd) {
      case 'M': p.moveTo(a[0], a[1]); break;
      case 'L': p.lineTo(a[0], a[1]); break;
      case 'Z': p.closePath(); break;
      case 'H': p.lineTo(a[0], p.getCurrentPoint().getY()); break;
      case 'V': p.lineTo(p.getCurrentPoint().getX(), a[0]); break;
      case 'C': p.curveTo(a[0], a[1], a[2], a[3], a[4], a[5]); break;
      default: throw new UnsupportedOperationException("unknown svg op: "+cmd);
    }
  }
  /** Exposing [paint] as [onPaint] */
  static class DrawPanel extends JPanel {
    @FunctionalInterface interface PaintHandler { void onPaint(Graphics g); }
    PaintHandler paintHandler;
    public DrawPanel(PaintHandler paintHandler) { this.paintHandler = paintHandler; }
    @Override public void paint(Graphics g) { super.paint(g); paintHandler.onPaint(g); }
  }
}

JDrawing1_KtVer.kt

import java.awt.*
import java.awt.geom.Path2D
import java.awt.Color.*
import java.io.* // FileReader, BufferedReader
import javax.swing.* // JFrame, Timer
import java.util.stream.Stream
import java.util.stream.Collectors.toList

// 加了个有内味的闪光特效…… 主要是没法给 g 仅一次设置 color。见 http://www.fredosaurus.com/notes-java/other/10time/20timer.html

object JDrawing1_KtVer {
  @JvmStatic fun main(vararg args: String) = args.forEach { fp ->
    val ui = svgPathUI(fp, loadPath(BufferedReader(FileReader(fp)).lines()) )
    ui.setVisible(true)
    Timer(300) { (ui.contentPane as JPanel).updateUI() }.apply { setRepeats(true) }.start()
  }
  fun svgPathUI(title: String, path: Path2D): JFrame {
    val win = JFrame().apply {
      setTitle(title); defaultCloseOperation = JFrame.EXIT_ON_CLOSE
      setSize(path.bounds.run { Dimension(x+width, y+height) })
    }
    win.contentPane = object: JPanel() {
      override fun paint(g: Graphics) { super.paint(g); g.color = nextColor(); (g as Graphics2D).fill(path) }
      var i = 0
      fun nextColor() = colors[i].also { i = (i+1) % colors.size }
    }
    return win
  }
  val colors = listOf(black, gray, lightGray, red, pink, orange, yellow, green, magenta, cyan, blue)
  fun loadPath(lines: Stream<String>, len_cmd: Int = 2): Path2D { // 也可用 Scanner 实现的
    val path = Path2D.Double()
    lines.forEach { sOperate ->
      val cmd = sOperate[0]
      val args: List<Double> = sOperate.run { if (length>len_cmd) substring(len_cmd).split(",").map(String::toDouble) else emptyList() }
      executeSVGCmd(path, cmd, args.iterator()::next)
    }
    return path
  }
  fun executeSVGCmd(p: Path2D, cmd: Char, a: () -> Double) = when (cmd) {
    'M' -> p.moveTo(a(), a())
    'L' -> p.lineTo(a(), a())
    'Z' -> p.closePath()
    'H' -> p.lineTo(a(), p.getCurrentPoint().getY())
    'V' -> p.lineTo(p.getCurrentPoint().getX(), a())
    'C' -> p.curveTo(a(), a(), a(), a(), a(), a())
    else -> throw UnsupportedOperationException("unknown cmd $cmd")
  }
}

JDrawing1_StreamVer.java

import java.awt.*;
import java.awt.geom.Path2D; // SVG rendering
import java.io.*; // FileReader, IOExcept, BufferedReader
import javax.swing.*; // JFrame, JPanel

class JDrawing1_StreamVer {
  public static void main(String... args) throws IOException {
    for (String fp : args)
    try (Reader ins = new BufferedReader(new FileReader(new File(fp)))) {
      JDrawing1.svgPathUI(fp, drawPath(ins)).setVisible(true);
    }
  }
  /** Handle MLZ,HV,C cmds */
  static Path2D drawPath(Reader ins) throws IOException {
    Path2D path = new Path2D.Double();
    // op {\n op {(,|' ')a} }?
    int lastCP; // 想叫 peek 后来觉得语义不太对
    String state = "init";
    DoubleProducer readD = () -> {
      double v = 0.0, vr = 0.0; // 数位[左/右]移到这里面去
      int c = 0; do { c = justRead(ins); } while (c == ' '||c == ',');
      boolean isExponent = false;
      while (c > '0'&&c < '9'||c == '.') if (c=='.') isExponent = true; // 没检查 1..0
      else if (!isExponent) {
        v = v*TEN + (double)(c-'0');
      } else { // 记得之前在一个流解析组合子上看过读 1.0E1 (==1*10) 这种的方法，不过这里没用
        vr = vr/TEN + (double)(c-'0');
      }
      return v+vr;
    };
    while ((lastCP = ins.read()) != -1) switch (state) { // 意思意思而已，没打算真运行
      case "init":
        executeSVGCmd(path, lastCP, readD);
        state = "loop";
        break;
      case "loop":
        notM1(dropTill('\n', ins)); // 注意这把 \n 本身也耗掉了
        lastCP = ins.read();
        executeSVGCmd(path, lastCP, readD);
        break;
    }
    return path;
  }
  static private int justRead(Reader ins) {
    try { return ins.read(); }
    catch (IOException ex) { return -1; } // 现在 (Java SE 8 之后的发行版中可能不支持使用 '_' 作为标识符) 什么鬼……
  }
  static private final double TEN = 10.0;
  static private int dropTill(int cp, Reader ins) throws IOException {
    int c = 0;
    while (c != cp && c != -1) { c = ins.read(); }
    return c; // -1 when EOF
  }
  static private int notM1(int cp) throws EOFException { if (cp == -1) throw new EOFException("unexpected end"); else return cp; }
  @FunctionalInterface interface DoubleProducer { double get(); }
  // 不知道 java.util.function 发什么呆，有 Consumer 没 Producer ！是怕性能不好么？
  // 懒得为 ins 变量可用、作用域受限 而创建 class 了，也不想引入局部 Path2D p; 或不加简写，就做成函数值参数。
  static void executeSVGCmd(Path2D p, int cmd, DoubleProducer a) {
    switch (cmd) {
      case 'M': p.moveTo(g(a), g(a)); break;
      case 'L': p.lineTo(g(a), g(a)); break;
      case 'Z': p.closePath(); break;
      case 'H': p.lineTo(g(a), g(p).getY()); break;
      case 'V': p.lineTo(g(p).getX(), g(a)); break;
      case 'C': p.curveTo(g(a), g(a), g(a), g(a), g(a), g(a)); break;
      default: throw new UnsupportedOperationException("unknown svg op: "+cmd);
    }
  }
  static private double g(DoubleProducer a) { return a.get(); } // 你动苏傻了，是因为 Jawa 不支持局部函数，别学我
  static private java.awt.geom.Point2D g(Path2D p) { return p.getCurrentPoint(); } //^... 还有 operator fun
}

path

M 730.6,5.2
C 725.9,16,724.7,22.7,724.7,37.5
C 724.8000000000001,57.6,728.6,73,738.2,91.7
C 741.6,98.4,742.5,101.10000000000001,741.7,101.8
C 739.4000000000001,103.5,732.4000000000001,106.7,727,108.5
C 712.2,113.4,682.9,130.2,670,141.3
C 646.8,161.20000000000002,631.4,178.10000000000002,622.8,193.60000000000002
C 621.1999999999999,196.3,618.1999999999999,201.00000000000003,616.0999999999999,204.00000000000003
C 610.5999999999999,211.60000000000002,604.3,231.70000000000002,601.4999999999999,250.50000000000003
C 600.0999999999999,259.90000000000003,594.5999999999999,276.8,590.2999999999998,285.3
C 588.9999999999999,288.1,585.9999999999999,292.6,583.7999999999998,295.40000000000003
C 580.5999999999998,299.40000000000003,580.0999999999998,300.6,581.3999999999999,300.8
C 583.6999999999998,301.3,589.3999999999999,297.5,593.4999999999999,292.8
C 597.6999999999999,287.8,598.5999999999999,289,597.1999999999999,298.1
C 596.4,303.6,596.4999999999999,304.3,598.0999999999999,304.70000000000005
C 601.3,305.6,601.8999999999999,310.00000000000006,600.8,324.6
C 599.6999999999999,339.70000000000005,600.1999999999999,345.90000000000003,602.4,344
C 603.1999999999999,343.4,604.3,340.8,605,338.2
L 606.2,333.5
L 608,335.8
C 609.1,337.1,610.2,339.8,610.5,341.8
C 611.3,346.1,613.7,353,615.2,354.7
C 617.3000000000001,357.3,618,355.8,617.4000000000001,349.7
L 616.9000000000001,343.5
L 618.9000000000001,347.5
C 620.0000000000001,349.7,620.9000000000001,352.5,621.0000000000001,353.8
C 621.0000000000001,355.2,622.7000000000002,357.6,625.3000000000001,360
C 630.2,364.6,630.6,364.7,631.5000000000001,361.9
C 632.1000000000001,360.09999999999997,632.4000000000001,360.29999999999995,634.8000000000001,363.9
C 636.9000000000001,367.2,637.8000000000001,367.79999999999995,639.7,367.4
C 642.5,366.7,644.5,368.2,646.8000000000001,372.59999999999997
C 648.4000000000001,375.59999999999997,657.5000000000001,383.99999999999994,659.2,383.99999999999994
C 660.3000000000001,383.99999999999994,660.2,378.59999999999997,659.2,377.49999999999994
C 658.1,376.19999999999993,652.8000000000001,359.8999999999999,653.3000000000001,359.3999999999999
C 654.0000000000001,358.5999999999999,656.6,362.49999999999994,658.4000000000001,366.99999999999994
C 659.4000000000001,369.49999999999994,660.9000000000001,373.29999999999995,661.8000000000001,375.49999999999994
C 662.7,377.69999999999993,664.2,380.49999999999994,665.1,381.79999999999995
C 666.8000000000001,383.99999999999994,666.9,383.99999999999994,667.5,381.99999999999994
C 667.8,380.8999999999999,667.9,379.19999999999993,667.6,378.19999999999993
C 667.3000000000001,377.29999999999995,667.4,375.8999999999999,667.9,375.19999999999993
C 668.5,374.19999999999993,669,374.29999999999995,670.1,375.5999999999999
C 671.1,376.7999999999999,671.5,379.9999999999999,671.4,386.3999999999999
C 671.4,397.8999999999999,668.9,403.5999999999999,659.1,414.8999999999999
C 653.9,420.99999999999994,652.3000000000001,423.49999999999994,652.7,425.0999999999999
C 653.7,428.69999999999993,659.4000000000001,433.4999999999999,667.2,437.3999999999999
C 675.6,441.49999999999994,677.3000000000001,443.8999999999999,678.9000000000001,453.49999999999994
C 680.2,460.8999999999999,684.3000000000001,465.29999999999995,690.8000000000001,466.3999999999999
C 693.1,466.69999999999993,695.0000000000001,467.3999999999999,695.1,467.7999999999999
C 695.2,468.1999999999999,695.3000000000001,470.2999999999999,695.4,472.3999999999999
C 695.6,475.3999999999999,696.4,476.8999999999999,698.6,478.69999999999993
C 705.5,484.29999999999995,708.1,487.49999999999994,713.5,497.0999999999999
L 719.3,507.2999999999999
L 718.5999999999999,520.6999999999999
C 718.1999999999999,527.9999999999999,717.3,536.0999999999999,716.4999999999999,538.5999999999999
L 715.1999999999999,543.0999999999999
L 719.9999999999999,545.1999999999999
C 724.3999999999999,547.0999999999999,724.8999999999999,547.5999999999999,725.3999999999999,551.4999999999999
C 726.0999999999999,555.6999999999999,724.9999999999999,560.2999999999998,723.0999999999999,561.4999999999999
C 720.9999999999999,562.6999999999999,721.8999999999999,566.9999999999999,724.3999999999999,567.9999999999999
C 727.8999999999999,569.2999999999998,729.9999999999999,572.8999999999999,729.9999999999999,577.6999999999999
C 729.9999999999999,579.9999999999999,730.4999999999999,584.0999999999999,730.9999999999999,586.6999999999999
C 731.5999999999999,589.3,732.3999999999999,594.4,732.8999999999999,597.9999999999999
C 733.3999999999999,601.5999999999999,734.6999999999998,608.6999999999999,735.8999999999999,613.8999999999999
C 738.6999999999998,626.4999999999999,738.5999999999999,629.2999999999998,734.6999999999998,639.0999999999999
C 732.7999999999998,643.6999999999999,729.1999999999998,654.1999999999999,726.5999999999998,662.4999999999999
C 721.1999999999998,679.6999999999999,717.2999999999998,688.7999999999998,714.7999999999998,690.0999999999999
C 712.7999999999998,691.1999999999999,710.6999999999998,690.4999999999999,705.2999999999998,686.8
C 699.4999999999999,682.9,688.9999999999999,678,686.2999999999998,678
C 685.0999999999998,678,683.7999999999998,677.5,683.4999999999999,677
C 682.4999999999999,675.4,671.2999999999998,675.8,667.6999999999999,677.6
C 662.9999999999999,680,659.1999999999999,683.9,657.9999999999999,687.5
C 656.9999999999999,690.6,657.3999999999999,698.9,659.5999999999999,722
C 660.1999999999999,727.9,659.8999999999999,729.3,657.4999999999999,734.5
C 653.5999999999999,742.8,651.1999999999999,746,649.3999999999999,745.3
C 648.5999999999999,745,646.0999999999999,741.5999999999999,643.8999999999999,737.5999999999999
C 641.5999999999999,733.6999999999999,638.4999999999999,728.5999999999999,636.8999999999999,726.3
C 635.2999999999998,724,633.9999999999999,721.5999999999999,633.9999999999999,720.9
C 633.9999999999999,720.1999999999999,631.9999999999999,716.5,629.5999999999999,712.6
C 627.1999999999999,708.7,623.9999999999999,703.1,622.4999999999999,700.1
C 615.0999999999999,685.4,604.4999999999999,673.3000000000001,594.9999999999999,668.8000000000001
C 591.3999999999999,667.2,587.3999999999999,665.2,585.9999999999999,664.5000000000001
C 584.5999999999999,663.8000000000001,580.7999999999998,658.9000000000001,577.4999999999999,653.7000000000002
C 574.1999999999999,648.5000000000001,569.2999999999998,641.8000000000002,566.6999999999999,638.9000000000002
C 562.5999999999999,634.5000000000002,561.9999999999999,633.2000000000002,562.5999999999999,631.1000000000003
C 563.8999999999999,626.3000000000003,564.1999999999999,592.8000000000003,562.9999999999999,585.5000000000002
C 560.7999999999998,572.4000000000002,557.8999999999999,561.7000000000003,554.7999999999998,555.6000000000003
C 550.6999999999998,547.6000000000003,544.0999999999998,539.1000000000003,539.2999999999998,535.7000000000003
C 529.6999999999998,529.1000000000003,515.0999999999998,526.8000000000003,498.59999999999985,529.5000000000002
C 493.29999999999984,530.3000000000002,487.1999999999999,531.0000000000002,484.99999999999983,531.0000000000002
C 482.6999999999998,531.0000000000002,478.79999999999984,531.5000000000002,476.29999999999984,532.2000000000003
C 470.29999999999984,533.7000000000003,469.39999999999986,532.5000000000002,468.49999999999983,521.7000000000003
C 468.1999999999998,517.2000000000003,467.59999999999985,512.7000000000003,467.3999999999998,511.7000000000003
C 466.5999999999998,509.2000000000003,463.2999999999998,509.60000000000025,461.2999999999998,512.6000000000003
C 459.7999999999998,515.0000000000002,459.69999999999976,516.2000000000003,460.7999999999998,524.8000000000003
C 462.19999999999976,535.6000000000003,461.4999999999998,537.3000000000003,455.5999999999998,538.6000000000003
C 449.1999999999998,539.9000000000002,426.6999999999998,548.0000000000002,422.4999999999998,550.4000000000002
C 420.0999999999998,551.8000000000002,416.69999999999976,554.2000000000002,414.89999999999975,555.7000000000002
C 413.09999999999974,557.3000000000002,409.59999999999974,559.6000000000001,407.09999999999974,561.0000000000001
C 401.39999999999975,564.2000000000002,399.09999999999974,568.6000000000001,394.59999999999974,585.6000000000001
C 392.7999999999997,592.7000000000002,390.4999999999997,601.1000000000001,389.59999999999974,604.3000000000002
C 387.2999999999997,612.5000000000002,387.59999999999974,615.4000000000002,391.4999999999997,627.6000000000001
C 393.4999999999997,633.8000000000002,394.9999999999997,640.4000000000001,394.9999999999997,643.2000000000002
C 394.9999999999997,649.6000000000001,400.4999999999997,670.2000000000002,403.7999999999997,676.3000000000002
C 405.1999999999997,679.0000000000002,408.39999999999975,683.5000000000002,410.89999999999975,686.4000000000002
C 413.4999999999998,689.3000000000002,418.19999999999976,695.0000000000002,421.4999999999998,699.0000000000002
C 436.39999999999975,717.4000000000002,443.69999999999976,721.6000000000003,474.9999999999998,729.9000000000002
C 482.39999999999975,731.8000000000002,485.5999999999998,733.1000000000003,485.7999999999998,734.3000000000002
C 485.9999999999998,735.2000000000002,483.4999999999998,741.4000000000002,480.19999999999976,748.2000000000002
C 470.4999999999998,768.4000000000002,470.19999999999976,769.1000000000001,466.89999999999975,779.5000000000001
C 457.2999999999997,810.4000000000001,453.9999999999998,830.1000000000001,452.4999999999998,866.0000000000001
C 451.89999999999975,880.1000000000001,451.2999999999998,883.8000000000001,448.89999999999975,891.5000000000001
C 443.59999999999974,908.5000000000001,439.09999999999974,926.3000000000001,438.9999999999998,930.2000000000002
V 933.0000000000001
H 571.8999999999997
H 704.7999999999997
L 705.2999999999997,927.7000000000002
C 705.6999999999997,924.9000000000002,706.3999999999997,920.0000000000001,706.9999999999998,917.0000000000001
C 708.3999999999997,910.1000000000001,709.7999999999997,900.9000000000001,710.8999999999997,890.5000000000001
C 711.8999999999997,881.8000000000001,712.6999999999997,879.0000000000001,714.0999999999998,879.0000000000001
C 715.5999999999998,879.0000000000001,716.6999999999998,882.9000000000001,718.4999999999998,894.5000000000001
C 719.3999999999997,900.5000000000001,721.1999999999998,909.9000000000001,722.5999999999998,915.2000000000002
C 723.8999999999997,920.5000000000001,724.9999999999998,926.7000000000002,724.9999999999998,928.9000000000002
V 933.0000000000002
H 894.0999999999998
H 1063.1999999999998
L 1062.4999999999998,926.2000000000003
C 1061.3999999999999,916.0000000000002,1061.6999999999998,887.0000000000002,1062.9999999999998,885.5000000000002
C 1064.3999999999999,883.8000000000002,1067.8999999999999,882.6000000000003,1078.4999999999998,880.1000000000003
C 1094.5999999999997,876.3000000000003,1097.9999999999998,875.2000000000003,1106.5999999999997,870.5000000000002
C 1121.4999999999998,862.5000000000002,1122.1999999999996,861.7000000000003,1114.9999999999998,860.5000000000002
C 1112.7999999999997,860.1000000000003,1110.6999999999998,859.4000000000002,1110.3999999999999,858.8000000000002
C 1110.1,858.3000000000002,1113.6999999999998,853.9000000000002,1118.3999999999999,849.1000000000001
C 1123.1,844.2000000000002,1126.9999999999998,839.8000000000002,1126.9999999999998,839.2000000000002
C 1126.9999999999998,837.5000000000001,1124.2999999999997,837.1000000000001,1110.9999999999998,836.8000000000002
L 1098.4999999999998,836.5000000000002
L 1069.6999999999998,850.8000000000002
C 1053.7999999999997,858.7000000000002,1040.1,865.0000000000002,1039.1999999999998,864.8000000000002
C 1037.2999999999997,864.4000000000002,1035.8999999999999,859.8000000000002,1033.3999999999999,845.0000000000002
C 1032.3999999999999,839.1000000000003,1030.6,833.3000000000002,1028.8,829.6000000000003
C 1026,824.1000000000003,1025.8999999999999,823.3000000000003,1027,820.0000000000002
C 1028,816.9000000000002,1027.9,815.0000000000002,1026.6,808.9000000000002
C 1025.6,804.9000000000002,1024.3,798.2000000000002,1023.5999999999999,794.0000000000002
C 1022.8,789.8000000000002,1021.1999999999999,784.4000000000002,1019.9999999999999,782.1000000000003
C 1018.3999999999999,778.9000000000002,1017.9999999999999,776.8000000000003,1018.4999999999999,774.3000000000003
C 1019.0999999999999,770.9000000000003,1018.4999999999999,767.5000000000003,1012.8999999999999,745.0000000000003
C 1011.3999999999999,738.7000000000004,1009.5999999999999,730.6000000000004,1008.9999999999999,727.1000000000004
C 1008.3999999999999,723.6000000000004,1006.7999999999998,717.8000000000004,1005.5999999999999,714.1000000000004
C 1004.3,710.5000000000003,1002.6999999999999,704.8000000000004,1001.9999999999999,701.5000000000003
C 1001.3999999999999,698.2000000000004,999.8999999999999,693.5000000000003,998.8999999999999,691.1000000000004
C 997.8999999999999,688.7000000000004,996.9999999999999,685.1000000000004,996.9999999999999,683.1000000000004
C 996.9999999999999,681.1000000000004,996.5999999999999,678.0000000000003,995.9999999999999,676.1000000000004
C 994.8999999999999,672.2000000000004,995.5999999999999,670.4000000000003,997.3999999999999,672.0000000000003
C 998.0999999999999,672.5000000000003,999.9999999999999,672.7000000000004,1001.5999999999999,672.4000000000003
C 1004.4999999999999,671.9000000000003,1004.6999999999999,672.1000000000004,1007.1999999999999,678.7000000000003
C 1008.6999999999999,682.4000000000003,1011.3,689.4000000000003,1012.9999999999999,694.2000000000003
C 1017.4999999999999,707.0000000000002,1024.6999999999998,722.5000000000002,1026.1999999999998,722.5000000000002
C 1027.1,722.5000000000002,1027.7999999999997,719.4000000000002,1028.4999999999998,712.2000000000003
C 1029.3999999999999,702.3000000000003,1029.5999999999997,701.7000000000003,1032.1999999999998,700.4000000000003
C 1037.6,697.6000000000004,1036.9999999999998,692.3000000000003,1030.6,685.2000000000003
C 1027.5,681.8000000000003,1027,680.5000000000002,1026.1,672.9000000000003
C 1025.6,668.3000000000003,1024.6,656.4000000000003,1023.9999999999999,646.5000000000003
C 1022.8999999999999,627.2000000000004,1022.4999999999999,623.9000000000003,1021.0999999999999,617.2000000000004
C 1020.4999999999999,614.2000000000004,1020.5999999999999,611.6000000000004,1021.4999999999999,608.7000000000004
C 1023.5999999999999,601.4000000000004,1026.3,602.9000000000004,1030,613.5000000000003
C 1031.1,616.8000000000003,1032.4,620.2000000000004,1032.9,621.0000000000003
C 1033.3000000000002,621.8000000000003,1035.8000000000002,627.4000000000003,1038.3000000000002,633.5000000000003
C 1040.9,639.5000000000003,1043.9,645.8000000000003,1045.1000000000001,647.5000000000003
L 1047.1000000000001,650.5000000000003
L 1046.7,646.0000000000003
C 1046.4,643.5000000000003,1045.6000000000001,639.0000000000003,1045,636.0000000000003
C 1044,631.2000000000004,1044,630.4000000000003,1045.5,629.3000000000003
C 1046.7,628.5000000000003,1047.1,627.3000000000003,1046.7,625.3000000000003
C 1045.1000000000001,617.6000000000003,1040.9,595.0000000000003,1040.4,591.0000000000003
C 1040.1000000000001,588.5000000000003,1038.7,581.2000000000004,1037.4,574.7000000000004
C 1035,562.9000000000004,1034.3000000000002,553.0000000000003,1035.8000000000002,553.0000000000003
C 1036.9,553.0000000000003,1038.6000000000001,556.5000000000003,1039.8000000000002,561.5000000000003
C 1044.8000000000002,581.0000000000003,1053.3000000000002,606.0000000000003,1059.2000000000003,618.0000000000003
C 1074.9000000000003,650.4000000000003,1079.5000000000002,659.0000000000003,1082.1000000000004,660.6000000000004
C 1082.9000000000003,661.1000000000004,1083.1000000000004,660.6000000000004,1082.7000000000003,658.9000000000003
C 1081.8000000000002,655.3000000000003,1075.4000000000003,627.9000000000003,1072.9000000000003,617.0000000000003
C 1070.3000000000004,605.5000000000003,1069.3000000000004,595.0000000000003,1070.8000000000004,595.0000000000003
C 1072.2000000000005,595.0000000000003,1074.9000000000003,598.8000000000003,1081.3000000000004,610.2000000000004
C 1084.2000000000005,615.4000000000004,1089.9000000000003,624.0000000000003,1093.8000000000004,629.2000000000004
C 1104.3000000000004,643.4000000000004,1105.2000000000005,643.4000000000004,1102.6000000000004,629.8000000000004
C 1097.6000000000004,603.4000000000004,1096.0000000000005,582.3000000000004,1094.5000000000005,519.5000000000005
C 1094.2000000000005,506.30000000000047,1093.5000000000005,486.70000000000044,1093.0000000000005,476.00000000000045
C 1092.5000000000005,465.30000000000047,1092.0000000000005,450.20000000000044,1092.0000000000005,442.50000000000045
C 1092.0000000000005,427.1000000000005,1088.8000000000004,382.20000000000044,1086.6000000000004,366.50000000000045
C 1083.2000000000003,342.70000000000044,1081.8000000000004,333.80000000000047,1079.4000000000003,322.00000000000045
C 1073.7000000000003,293.30000000000047,1068.3000000000004,271.70000000000044,1062.8000000000004,255.00000000000045
C 1054.9000000000003,231.00000000000045,1050.8000000000004,219.70000000000044,1045.9000000000003,209.00000000000045
C 1036.2000000000003,187.50000000000045,1032.3000000000004,176.80000000000047,1032.7000000000003,173.00000000000045
C 1033.3000000000002,168.60000000000045,1029.7000000000003,153.40000000000046,1026.5000000000002,145.90000000000046
C 1022.8000000000002,137.40000000000046,1011.6000000000003,117.60000000000046,1008.1000000000003,113.10000000000046
C 1006.3000000000003,110.90000000000046,1003.3000000000003,106.70000000000046,1001.3000000000003,103.80000000000047
C 996.4000000000003,96.60000000000046,977.5000000000003,77.90000000000046,972.5000000000003,75.30000000000047
C 970.3000000000003,74.20000000000047,966.9000000000003,72.40000000000046,964.9000000000003,71.20000000000047
C 954.6000000000004,65.40000000000047,925.3000000000003,62.30000000000047,912.2000000000003,65.50000000000047
C 908.5000000000002,66.40000000000047,903.3000000000003,68.10000000000046,900.6000000000003,69.30000000000047
C 895.9000000000002,71.30000000000047,895.7000000000003,71.30000000000047,892.1000000000003,69.50000000000047
C 890.1000000000003,68.40000000000047,877.3000000000003,56.40000000000047,863.6000000000003,42.70000000000047
C 849.9,29.1,835,15.2,830.6,11.9
C 826.1,8.6,820.8,4.6,818.8,3
L 815.1,0
H 774
H 732.9
Z
M 795.3000000000001,526.7
C 797.8000000000001,532,798.1,536,796.1,536
C 795.8000000000001,536,793.2,537.8,790.4,539.9
C 783.6999999999999,544.9,782.1,544.1999999999999,783.8,537
C 784.5,534.2,785,526.8,785,520.6
C 785,514.4,785.3,509,785.7,508.6
C 786.3000000000001,508,788,511.20000000000005,795.3000000000001,526.7
Z

原推文 https://twitter.com/NeoTrumeet/status/1351661745455071232?s=19
Kotlin 的一些 o.getXXX() 可以简化 o.xxx 但另一些不能
这个重写也可能有能再化简（功能的等价调用方式上或复用上），相信 Kotlin 版可缩至 40L 内
整体来看也还算可以的，不可能处理大量 text 所以 stream 化也没必要，Java Scanner 的性能我觉得不可信

之前不知道 SVG Path 可以这么玩，也不知道 subSequence(返回仅可 charAt 系) 和 substring 有什么区别，现在明白了。