JavaFX的形状未显示？

huangapple
go评论116阅读模式
英文:

JavaFX shapes not showing up?

问题

我需要使用文本文件中的指令来创建一张图片。我几乎完成了，但是其中有 2 个形状没有显示出来。链接 https://i.stack.imgur.com/WKxwK.jpg 上面的图片是我现在的情况，下面的图片是我需要的效果。如您所见，右上角的一个圆和构建火箭底座的矩形都没有显示出来。这是相关的代码部分：

  1. Group root = new Group();  //创建一个用于存放所有形状的组
  2. try {
  3.     Scanner obj = new Scanner(new File("scene.txt"));  //读取文本文件
  4.     boolean shouldBreak = false;
  5.     while(obj.hasNextLine()){
  6.         String[] strArray = obj.nextLine().split(" ");  //将每个命令拆分为新行
  8.         switch(strArray[0]){
  9.             case "SIZE":                                      //设置窗口大小
  10.                 fwidth = Double.parseDouble(strArray[1]);
  11.                 fheight = Double.parseDouble(strArray[2]);
  12.                 break;
  14.             case "LINE":                                      //创建线段
  15.                 la = Double.parseDouble(strArray[1]);
  16.                 lb = Double.parseDouble(strArray[2]);
  17.                 lc = Double.parseDouble(strArray[3]);
  18.                 ld = Double.parseDouble(strArray[4]);
  19.                 Line line = new Line(la,lb,lc,ld);
  20.                 line.setStyle("-fx-stroke:rgb(127,244,16)");
  21.                 root.getChildren().add(line);
  22.                 break;
  24.             case "CIRCLE":                                    //创建圆形
  25.                 cx = Double.parseDouble(strArray[1]);
  26.                 cy = Double.parseDouble(strArray[2]);
  27.                 cr = Double.parseDouble(strArray[3]);
  28.                 Circle circle = new Circle(cx,cy,cr);
  29.                 circle.setFill(null);
  30.                 circle.setStyle("-fx-stroke:rgb(127,244,16)");
  31.                 root.getChildren().add(circle);
  32.                 break;
  34.             case "RECTANGLE":                                 //创建矩形
  35.                 rx = Double.parseDouble(strArray[1]);
  36.                 ry = Double.parseDouble(strArray[2]);
  37.                 rw = Double.parseDouble(strArray[3]);
  38.                 rh = Double.parseDouble(strArray[4]);
  39.                 Rectangle rect = new Rectangle(rx,ry,rw,rh);
  40.                 rect.setFill(null);
  41.                 rect.setStyle("-fx-stroke:rgb(127,244,16)");
  42.                 root.getChildren().add(rect);
  43.                 break;
  45.             case "TEXT":                                      //创建文本
  46.                 tx = Double.parseDouble(strArray[1]);
  47.                 ty = Double.parseDouble(strArray[2]);
  48.                 for(int i = 3; i < strArray.length; i++){
  49.                     ts = ts + " " + strArray[i];
  50.                 }
  51.                 Text text = new Text(tx,ty,ts);
  52.                 text.setStyle("-fx-stroke:rgb(127,244,16)");
  53.                 root.getChildren().add(text);
  54.                 ts = "";
  55.                 break;
  57.             case "//":                                        //忽略注释
  58.                 obj.nextLine();
  59.                 break;
  61.             case "END":                                       //停止读取文件
  62.                 shouldBreak = true;
  63.                 break;
  64.         }
  65.         if(shouldBreak){break;}
  66.     }
  68.     Scene scene = new Scene(root, fwidth, fheight, Color.BLACK);
  69.     stage.setTitle("graphic");
  70.     stage.setScene(scene);
  71.     stage.show();
  72. }
  73. catch (FileNotFoundException fileNotFoundException) {
  74.     fileNotFoundException.printStackTrace();
  75. }
  76. }
  78. /**
  79.  * 主方法
  80.  * @param args
  81.  */
  83. public static void main(String[] args) {
  84.     launch(args);
  85. }
  86. }

我在网上搜索了一下，但没有找到相关信息。如果有人知道为什么只有 2 个形状没有显示出来，我会非常感谢任何帮助。

英文:

I need to create an image using instructions from a text file. I have almost finished, but 2 of my shapes are not showing up. https://i.stack.imgur.com/WKxwK.jpg The top pic is what I have, and the bottom is what I need. As you can see, one of the circles in the top right is not showing and the rectangle building the base of the rocket isn't either. this is the relevant code:

  1. Group root = new Group();  //creates group for all shapes to go in
  2. try {
  3. Scanner obj = new Scanner(new File(&quot;scene.txt&quot;));  //reads text file
  4. boolean shouldBreak = false;
  5. while(obj.hasNextLine()){
  6. String[] strArray = obj.nextLine().split(&quot; &quot;);  //splits all commands to new line
  7. switch(strArray[0]){
  8. case &quot;SIZE&quot;:                                      //sets size of window
  9. fwidth = Double.parseDouble(strArray[1]);
  10. fheight = Double.parseDouble(strArray[2]);
  11. break;
  12. case &quot;LINE&quot;:                                      //creates each line
  13. la = Double.parseDouble(strArray[1]);
  14. lb = Double.parseDouble(strArray[2]);
  15. lc = Double.parseDouble(strArray[3]);
  16. ld = Double.parseDouble(strArray[4]);
  17. Line line = new Line(la,lb,lc,ld);
  18. line.setStyle(&quot;-fx-stroke:rgb(127,244,16)&quot;);
  19. root.getChildren().add(line);
  20. break;
  21. case &quot;CIRCLE&quot;:                                    //creates each circle
  22. cx = Double.parseDouble(strArray[1]);
  23. cy = Double.parseDouble(strArray[2]);
  24. cr = Double.parseDouble(strArray[3]);
  25. Circle circle = new Circle(cx,cy,cr);
  26. circle.setFill(null);
  27. circle.setStyle(&quot;-fx-stroke:rgb(127,244,16)&quot;);
  28. root.getChildren().add(circle);
  29. break;
  30. case &quot;RECTANGLE&quot;:                                 //creates each rectangle
  31. rx = Double.parseDouble(strArray[1]);
  32. ry = Double.parseDouble(strArray[2]);
  33. rw = Double.parseDouble(strArray[3]);
  34. rh = Double.parseDouble(strArray[4]);
  35. Rectangle rect = new Rectangle(rx,ry,rw,rh);
  36. rect.setFill(null);
  37. rect.setStyle(&quot;-fx-stroke:rgb(127,244,16)&quot;);
  38. root.getChildren().add(rect);
  39. break;
  40. case &quot;TEXT&quot;:                                      //creates each string of text
  41. tx = Double.parseDouble(strArray[1]);
  42. ty = Double.parseDouble(strArray[2]);
  43. for(int i = 3; i &lt; strArray.length; i++){
  44. ts = ts + &quot; &quot; + strArray[i];
  45. }
  46. Text text = new Text(tx,ty,ts);
  47. text.setStyle(&quot;-fx-stroke:rgb(127,244,16)&quot;);
  48. root.getChildren().add(text);
  49. ts = &quot;&quot;;
  50. break;
  51. case &quot;//&quot;:                                        //ignores comments
  52. obj.nextLine();
  53. break;
  54. case &quot;END&quot;:                                       //stops reading file
  55. shouldBreak = true;
  56. break;
  57. }
  58. if(shouldBreak){break;}
  59. }
  60. Scene scene = new Scene(root, fwidth, fheight, Color.BLACK);
  61. stage.setTitle(&quot;graphic&quot;);
  62. stage.setScene(scene);
  63. stage.show();
  64. }
  65. catch (FileNotFoundException fileNotFoundException) {
  66. fileNotFoundException.printStackTrace();
  67. }
  68. }
  69. /**
  70. * The main method
  71. * @param args
  72. */
  73. public static void main(String[] args) {
  74. launch(args);
  75. }
  76. }

i've looked online and can't find anything about it. if anyone knows why just 2 of the shapes aren't appearing, any help is appreciated.

答案1

得分: 1

以下是翻译好的内容：

  1.                         case "//":            //忽略注释
  2.                         obj.nextLine();
  3.                         break;
  1.                         case "//":            //忽略注释
  2.                         break;
英文: 
  1.                     case &quot;//&quot;:            //ignores comments
  2. obj.nextLine();
  3. break;

You are causing it to skip an additional instruction line here. I'm assuming this is whats making you skip certain shapes. Below is what it should be.

  1.                     case &quot;//&quot;:            //ignores comments
  2. break;

huangapple
  • 本文由 发表于 2020年10月18日 22:35:26
  • 转载请务必保留本文链接：https://go.coder-hub.com/64414536.html
  • java
  • java.util.scanner
  • javafx
匿名

发表评论

匿名网友

:?: :razz: :sad: :evil: :!: :smile: :oops: :grin: :eek: :shock: :???: :cool: :lol: :mad: :twisted: :roll: :wink: :idea: :arrow: :neutral: :cry: :mrgreen:

确定