Allow files to be created and deleted and provide some default files for svg, lua, obj, and txt

src/main/java/sh/ball/gui/controller/GeneralController.java

@@ -3,9 +3,11 @@ package sh.ball.gui.controller;
 import javafx.animation.KeyFrame;
 import javafx.animation.Timeline;
 import javafx.application.Platform;
+import javafx.collections.FXCollections;
 import javafx.fxml.FXML;
 import javafx.fxml.Initializable;
 import javafx.scene.control.*;
+import javafx.scene.input.KeyCode;
 import javafx.scene.shape.SVGPath;
 import javafx.stage.DirectoryChooser;
 import javafx.stage.FileChooser;
@@ -19,10 +21,12 @@ import javax.xml.parsers.ParserConfigurationException;
 import java.io.File;
 import java.io.IOException;
 import java.net.URL;
+import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.util.*;
 
 import static sh.ball.gui.Gui.audioPlayer;
+import static sh.ball.gui.Gui.main;
 
 public class GeneralController implements Initializable, SubController {
 
@@ -61,6 +65,14 @@ public class GeneralController implements Initializable, SubController {
   private Slider micVolumeSlider;
   @FXML
   private SVGPath micVolumeMidi;
+  @FXML
+  private TextField createFileTextField;
+  @FXML
+  private ComboBox<String> createFileComboBox;
+  @FXML
+  private Button createFileButton;
+  @FXML
+  private Button deleteFileButton;
 
   public void setRecordResult(String result) {
     recordLabel.setText(result);
@@ -216,6 +228,38 @@ public class GeneralController implements Initializable, SubController {
     });
 
     editFileButton.setOnAction(e -> mainController.openCodeEditor());
+    deleteFileButton.setOnAction(e -> mainController.deleteCurrentFile());
+
+    createFileComboBox.setItems(FXCollections.observableList(List.of(".lua", ".svg", ".obj", ".txt")));
+    createFileComboBox.setValue(".lua");
+
+    try {
+      Map<String, byte[]> defaultFileMap = Map.of(
+        ".lua", getClass().getResourceAsStream("/lua/demo.lua").readAllBytes(),
+        ".svg", getClass().getResourceAsStream("/svg/demo.svg").readAllBytes(),
+        ".obj", getClass().getResourceAsStream("/models/cube.obj").readAllBytes(),
+        ".txt", "hello".getBytes(StandardCharsets.UTF_8)
+      );
+
+      createFileButton.setOnAction(e -> {
+        try {
+          String fileName = createFileTextField.getText() + createFileComboBox.getValue();
+          byte[] fileData = defaultFileMap.get(createFileComboBox.getValue());
+          mainController.createFile(fileName, fileData);
+          createFileTextField.setText("");
+        } catch (Exception ex) {
+          ex.printStackTrace();
+        }
+      });
+    } catch (IOException e) {
+      e.printStackTrace();
+    }
+
+    createFileTextField.setOnKeyPressed(event -> {
+      if (event.getCode() == KeyCode.ENTER) {
+        createFileButton.getOnAction().handle(null);
+      }
+    });
   }
 
   @Override
@@ -233,7 +277,7 @@ public class GeneralController implements Initializable, SubController {
 
   public void updateFrequency(double leftFrequency, double rightFrequency) {
     Platform.runLater(() ->
-      frequencyLabel.setText(String.format("L/R Frequency:\n%d Hz / %d Hz", Math.round(leftFrequency), Math.round(rightFrequency)))
+      frequencyLabel.setText(String.format("L/R Frequency: %5d Hz\t / %5d Hz", Math.round(leftFrequency), Math.round(rightFrequency)))
     );
   }
 

src/main/java/sh/ball/gui/controller/MainController.java

@@ -53,6 +53,7 @@ import sh.ball.engine.ObjectServer;
 import sh.ball.engine.ObjectSet;
 import sh.ball.gui.Gui;
 import sh.ball.oscilloscope.ByteWebSocketServer;
+import sh.ball.parser.FileParser;
 import sh.ball.parser.lua.LuaParser;
 import sh.ball.parser.obj.ObjFrameSettings;
 import sh.ball.parser.obj.ObjParser;
@@ -96,11 +97,10 @@ public class MainController implements Initializable, FrequencyListener, MidiLis
   // frames
   private static final InputStream DEFAULT_OBJ = MainController.class.getResourceAsStream("/models/cube.obj");
   private final ExecutorService executor = Executors.newSingleThreadExecutor();
-  private final LuaParser luaParser = new LuaParser();
   private final Set<String> unsavedFileNames = new LinkedHashSet<>();
   private List<byte[]> openFiles = new ArrayList<>();
   private List<String> frameSourcePaths = new ArrayList<>();
-  private List<FrameSource<Vector2>> sampleSources = new ArrayList<>();
+  private List<FileParser<FrameSource<Vector2>>> sampleParsers = new ArrayList<>();
   private List<FrameSource<List<Shape>>> frameSources = new ArrayList<>();
   private FrameProducer<List<Shape>> producer;
   private int currentFrameSource;
@@ -190,7 +190,7 @@ public class MainController implements Initializable, FrequencyListener, MidiLis
 
     openFiles.add(baos.toByteArray());
     frameSources.add(frames);
-    sampleSources.add(null);
+    sampleParsers.add(null);
     frameSourcePaths.add("cube.obj");
     currentFrameSource = 0;
     this.producer = new FrameProducer<>(audioPlayer, frames);
@@ -518,8 +518,12 @@ public class MainController implements Initializable, FrequencyListener, MidiLis
   }
 
   public void setLuaVariable(String variableName, Object value) {
+    sampleParsers.forEach(sampleParser -> {
+      if (sampleParser instanceof LuaParser luaParser) {
         luaParser.setVariable(variableName, value);
       }
+    });
+  }
 
   public void setSoftwareOscilloscopeAction(Runnable openBrowser) {
     softwareOscilloscopeMenuItem.setOnAction((e) -> openBrowser.run());
@@ -620,17 +624,42 @@ public class MainController implements Initializable, FrequencyListener, MidiLis
     new Thread(analyser).start();
   }
 
+  private void disableSources() {
+    frameSources.stream().filter(Objects::nonNull).forEach(FrameSource::disable);
+    sampleParsers.stream().filter(Objects::nonNull).forEach(parser -> {
+      try {
+        parser.get().disable();
+      } catch (Exception e) {
+        e.printStackTrace();
+      }
+    });
+  }
+
   // changes the FrameProducer e.g. could be changing from a 3D object to an
   // SVG. The old FrameProducer is stopped and a new one created and initialised
   // with the same settings that the original had.
   private void changeFrameSource(int index) {
+    if (frameSources.size() == 0) {
+      generalController.setFrameSourceName("No file open!");
+      generalController.updateFrameLabels();
+      audioPlayer.removeSampleSource();
+      audioPlayer.addFrame(List.of(new Vector2()));
+      return;
+    }
     index = Math.max(0, Math.min(index, frameSources.size() - 1));
     currentFrameSource = index;
-    frameSources.stream().filter(Objects::nonNull).forEach(FrameSource::disable);
-    sampleSources.stream().filter(Objects::nonNull).forEach(FrameSource::disable);
+    disableSources();
 
     FrameSource<List<Shape>> frames = frameSources.get(index);
-    FrameSource<Vector2> samples = sampleSources.get(index);
+    FrameSource<Vector2> samples = null;
+    try {
+      FileParser<FrameSource<Vector2>> sampleParser = sampleParsers.get(index);
+      if (sampleParser != null ) {
+        samples = sampleParser.get();
+      }
+    } catch (Exception e) {
+      e.printStackTrace();
+    }
     if (frames != null) {
       frames.enable();
       audioPlayer.removeSampleSource();
@@ -676,6 +705,56 @@ public class MainController implements Initializable, FrequencyListener, MidiLis
     });
   }
 
+  private void createFile(String name, byte[] fileData, List<FileParser<FrameSource<Vector2>>> sampleParsers, List<FrameSource<List<Shape>>> frameSources, List<String> frameSourcePaths, List<byte[]> openFiles) throws Exception {
+    if (frameSourcePaths.contains(name)) {
+      throw new IOException("File already exists with this name");
+    }
+    if (LuaParser.isLuaFile(name)) {
+      LuaParser luaParser = new LuaParser();
+      luaParser.setScriptFromInputStream(new ByteArrayInputStream(fileData));
+      luaParser.parse();
+      sampleParsers.add(luaParser);
+      luaController.updateLuaVariables();
+      frameSources.add(null);
+    } else {
+      frameSources.add(ParserFactory.getParser(name, fileData).parse());
+      sampleParsers.add(null);
+    }
+    frameSourcePaths.add(name);
+    openFiles.add(fileData);
+    Platform.runLater(() -> {
+      generalController.showMultiFileTooltip(frameSources.size() > 1);
+      if (generalController.framesPlaying() && frameSources.size() == 1) {
+        generalController.disablePlayback();
+      }
+    });
+  }
+
+  public void createFile(String name, byte[] fileData) throws Exception {
+    createFile(name, fileData, sampleParsers, frameSources, frameSourcePaths, openFiles);
+    changeFrameSource(frameSources.size() - 1);
+    unsavedFileNames.add(name);
+    setUnsavedFileWarning();
+  }
+
+  public void deleteCurrentFile() {
+    if (frameSources.isEmpty()) {
+      return;
+    }
+    disableSources();
+    sampleParsers.remove(currentFrameSource);
+    frameSources.remove(currentFrameSource);
+    String name = frameSourcePaths.get(currentFrameSource);
+    unsavedFileNames.remove(name);
+    setUnsavedFileWarning();
+    frameSourcePaths.remove(currentFrameSource);
+    openFiles.remove(currentFrameSource);
+    if (currentFrameSource >= frameSources.size()) {
+      currentFrameSource--;
+    }
+    changeFrameSource(currentFrameSource);
+  }
+
   void updateFileData(byte[] file, String name) {
     int index = frameSourcePaths.indexOf(name);
     if (index == -1) {
@@ -685,16 +764,18 @@ public class MainController implements Initializable, FrequencyListener, MidiLis
     openFiles.set(index, file);
     try {
       if (LuaParser.isLuaFile(name)) {
+        FileParser<FrameSource<Vector2>> sampleParser = sampleParsers.get(index);
+        if (sampleParser instanceof LuaParser luaParser) {
           luaParser.setScriptFromInputStream(new ByteArrayInputStream(file));
-        FrameSource<Vector2> sampleSource = sampleSources.get(index);
-        sampleSources.set(index, luaParser.parse());
-        sampleSource.disable();
+        }
+        sampleParser.parse().disable();
+        sampleParsers.set(index, sampleParser);
         frameSources.set(index, null);
       } else {
         FrameSource<List<Shape>> frameSource = frameSources.get(index);
         frameSources.set(index, ParserFactory.getParser(name, file).parse());
         frameSource.disable();
-        sampleSources.set(index, null);
+        sampleParsers.set(index, null);
       }
 
       unsavedFileNames.add(name);
@@ -711,7 +792,7 @@ public class MainController implements Initializable, FrequencyListener, MidiLis
   void setUnsavedFileWarning() {
     Platform.runLater(() -> {
       if (!unsavedFileNames.isEmpty()) {
-        String warning = "(unsaved file changes: " + String.join(", ", unsavedFileNames) + ")";
+        String warning = "(unsaved files: " + String.join(", ", unsavedFileNames) + ")";
         updateTitle(warning, openProjectPath);
       } else {
         updateTitle(null, openProjectPath);
@@ -720,7 +801,7 @@ public class MainController implements Initializable, FrequencyListener, MidiLis
   }
 
   void updateFiles(List<byte[]> files, List<String> names, int startingFrameSource) throws Exception {
-    List<FrameSource<Vector2>> newSampleSources = new ArrayList<>();
+    List<FileParser<FrameSource<Vector2>>> newSampleParsers = new ArrayList<>();
     List<FrameSource<List<Shape>>> newFrameSources = new ArrayList<>();
     List<String> newFrameSourcePaths = new ArrayList<>();
     List<byte[]> newOpenFiles = new ArrayList<>();
@@ -735,17 +816,8 @@ public class MainController implements Initializable, FrequencyListener, MidiLis
 
     for (int i = 0; i < files.size(); i++) {
       try {
-        if (LuaParser.isLuaFile(names.get(i))) {
-          luaParser.setScriptFromInputStream(new ByteArrayInputStream(files.get(i)));
-          newSampleSources.add(luaParser.parse());
-          newFrameSources.add(null);
-        } else {
-          newFrameSources.add(ParserFactory.getParser(names.get(i), files.get(i)).parse());
-          newSampleSources.add(null);
-        }
-        newFrameSourcePaths.add(names.get(i));
-        newOpenFiles.add(files.get(i));
-      } catch (IOException | IllegalArgumentException e) {
+        createFile(names.get(i), files.get(i), newSampleParsers, newFrameSources, newFrameSourcePaths, newOpenFiles);
+      } catch (Exception e) {
         Platform.runLater(() -> {
           generalController.setFrameSourceName(e.getMessage());
           generalController.updateFrameLabels();
@@ -753,21 +825,14 @@ public class MainController implements Initializable, FrequencyListener, MidiLis
       }
     }
 
-    Platform.runLater(() -> {
     if (newFrameSources.size() > 0) {
-        generalController.showMultiFileTooltip(newFrameSources.size() > 1);
-        if (generalController.framesPlaying() && newFrameSources.size() == 1) {
-          generalController.disablePlayback();
-        }
-        frameSources.stream().filter(Objects::nonNull).forEach(FrameSource::disable);
-        sampleSources.stream().filter(Objects::nonNull).forEach(FrameSource::disable);
-        sampleSources = newSampleSources;
+      disableSources();
+      sampleParsers = newSampleParsers;
       frameSources = newFrameSources;
       frameSourcePaths = newFrameSourcePaths;
       openFiles = newOpenFiles;
       changeFrameSource(startingFrameSource);
     }
-    });
   }
 
   // used so that the Controller has access to the stage, allowing it to open
@@ -1218,6 +1283,8 @@ public class MainController implements Initializable, FrequencyListener, MidiLis
         updateFiles(files, fileNames, 0);
       }
 
+      luaController.updateLuaVariables();
+
       openProjectPath = projectFileName;
       updateTitle(null, projectFileName);
     } catch (Exception e) {
@@ -1297,8 +1364,12 @@ public class MainController implements Initializable, FrequencyListener, MidiLis
   }
 
   public void resetLuaStep() {
+    sampleParsers.forEach(sampleParser -> {
+      if (sampleParser instanceof LuaParser luaParser) {
         luaParser.resetStep();
       }
+    });
+  }
 
   private record PrintableSlider(Slider slider) {
     @Override

src/main/java/sh/ball/parser/FileParser.java

@@ -1,10 +1,10 @@
 package sh.ball.parser;
 
-import java.io.IOException;
-import javax.xml.parsers.ParserConfigurationException;
-
 import org.xml.sax.SAXException;
 
+import javax.xml.parsers.ParserConfigurationException;
+import java.io.IOException;
+
 public abstract class FileParser<T> {
 
   public abstract String getFileExtension();
@@ -21,4 +21,6 @@ public abstract class FileParser<T> {
   }
 
   public abstract T parse() throws Exception;
+
+  public abstract T get() throws Exception;
 }

src/main/java/sh/ball/parser/lua/LuaParser.java

@@ -35,6 +35,11 @@ public class LuaParser extends FileParser<FrameSource<Vector2>> {
     return sampleSource;
   }
 
+  @Override
+  public FrameSource<Vector2> get() {
+    return sampleSource;
+  }
+
   public static boolean isLuaFile(String path) {
     return path.matches(".*\\.lua");
   }

src/main/java/sh/ball/parser/obj/ObjParser.java

@@ -55,6 +55,11 @@ public class ObjParser extends FileParser<FrameSource<List<Shape>>> {
     return new ObjFrameSource(object, camera);
   }
 
+  @Override
+  public FrameSource<List<Shape>> get() throws IOException {
+    return parse();
+  }
+
   // If camera position arguments haven't been specified, automatically work out the position of
   // the camera based on the size of the object in the camera's view.
   public void setFocalLength(double focalLength) {

src/main/java/sh/ball/parser/svg/SvgParser.java

@@ -190,6 +190,11 @@ public class SvgParser extends FileParser<FrameSource<List<Shape>>> {
     }
   }
 
+  @Override
+  public FrameSource<List<Shape>> get() throws IOException, ParserConfigurationException, SAXException {
+    return parse();
+  }
+
   /* Given a character, will return the glyph associated with it.
    * Assumes that the .svg loaded has character glyphs. */
   public List<Shape> parseGlyphsWithUnicode(char unicode) {

src/main/java/sh/ball/parser/txt/TextParser.java

@@ -83,6 +83,11 @@ public class TextParser extends FileParser<FrameSource<List<Shape>>> {
     return new ShapeFrameSource(Shape.flip(Shape.normalize(shapes)));
   }
 
+  @Override
+  public FrameSource<List<Shape>> get() throws Exception {
+    return parse();
+  }
+
   public static boolean isTxtFile(String path) {
     return path.matches(".*\\.txt");
   }

src/main/resources/fxml/general.fxml

@@ -1,25 +1,31 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
 <?import javafx.scene.control.Button?>
+<?import javafx.scene.control.ComboBox?>
 <?import javafx.scene.control.Label?>
 <?import javafx.scene.control.Slider?>
+<?import javafx.scene.control.TextField?>
 <?import javafx.scene.layout.AnchorPane?>
 <?import javafx.scene.shape.SVGPath?>
 
-<AnchorPane id="control-pane" prefHeight="324.0" prefWidth="364.0" xmlns="http://javafx.com/javafx/17" xmlns:fx="http://javafx.com/fxml/1" fx:controller="sh.ball.gui.controller.GeneralController">
+<AnchorPane id="control-pane" prefHeight="341.0" prefWidth="364.0" xmlns="http://javafx.com/javafx/17" xmlns:fx="http://javafx.com/fxml/1" fx:controller="sh.ball.gui.controller.GeneralController">
     <children>
-        <Button fx:id="chooseFileButton" layoutX="14.0" layoutY="26.0" mnemonicParsing="false" prefHeight="26.0" prefWidth="114.0" text="Choose File" />
-        <Label fx:id="fileLabel" alignment="TOP_LEFT" layoutX="143.0" layoutY="30.0" maxWidth="270.0" prefHeight="42.0" prefWidth="174.0" text="cube.obj" wrapText="true" />
-        <Label fx:id="recordLabel" layoutX="13.0" layoutY="304.0" maxWidth="451.0" prefHeight="18.0" prefWidth="343.0" />
-        <Label id="frequency" fx:id="frequencyLabel" layoutX="14.0" layoutY="141.0" prefHeight="58.0" prefWidth="343.0" text="L/R Frequency:&#10; &#10;" />
-        <Button fx:id="chooseFolderButton" layoutX="14.0" layoutY="76.0" mnemonicParsing="false" prefHeight="26.0" prefWidth="114.0" text="Choose Folder" />
-        <Label fx:id="jkLabel" layoutX="143.0" layoutY="69.0" maxWidth="270.0" prefHeight="70.0" prefWidth="210.0" text="Use j and k (or MIDI Program Change) to cycle between files, or i to start playback" visible="false" wrapText="true" />
-        <Slider fx:id="octaveSlider" blockIncrement="1.0" layoutX="82.0" layoutY="215.0" majorTickUnit="1.0" max="5.0" min="-5.0" minorTickCount="0" prefHeight="42.0" prefWidth="246.0" showTickLabels="true" showTickMarks="true" snapToTicks="true" />
-        <SVGPath fx:id="octaveMidi" content="M20.15 8.26H22V15.74H20.15M13 8.26H18.43C19 8.26 19.3 8.74 19.3 9.3V14.81C19.3 15.5 19 15.74 18.38 15.74H13V11H14.87V13.91H17.5V9.95H13M10.32 8.26H12.14V15.74H10.32M2 8.26H8.55C9.1 8.26 9.41 8.74 9.41 9.3V15.74H7.59V10.15H6.5V15.74H4.87V10.15H3.83V15.74H2Z" fill="WHITE" layoutX="333.0" layoutY="211.0" pickOnBounds="true" />
-        <Label layoutX="13.0" layoutY="214.0" text="Octave" />
-      <Slider fx:id="micVolumeSlider" blockIncrement="1.0" layoutX="82.0" layoutY="254.0" majorTickUnit="1.0" max="10.0" prefHeight="42.0" prefWidth="246.0" showTickLabels="true" showTickMarks="true" value="1.0" />
-      <SVGPath fx:id="micVolumeMidi" content="M20.15 8.26H22V15.74H20.15M13 8.26H18.43C19 8.26 19.3 8.74 19.3 9.3V14.81C19.3 15.5 19 15.74 18.38 15.74H13V11H14.87V13.91H17.5V9.95H13M10.32 8.26H12.14V15.74H10.32M2 8.26H8.55C9.1 8.26 9.41 8.74 9.41 9.3V15.74H7.59V10.15H6.5V15.74H4.87V10.15H3.83V15.74H2Z" fill="WHITE" layoutX="333.0" layoutY="250.0" pickOnBounds="true" />
-      <Label layoutX="13.0" layoutY="253.0" text="Mic Volume" />
-      <Button fx:id="editFileButton" layoutX="325.0" layoutY="26.0" mnemonicParsing="false" text="Edit" />
+        <Button fx:id="chooseFileButton" layoutX="14.0" layoutY="17.0" mnemonicParsing="false" prefHeight="26.0" prefWidth="114.0" text="Choose File" />
+        <Label fx:id="fileLabel" alignment="TOP_LEFT" layoutX="143.0" layoutY="22.0" maxWidth="270.0" prefHeight="58.0" prefWidth="210.0" text="cube.obj" wrapText="true" />
+        <Label fx:id="recordLabel" layoutX="14.0" layoutY="323.0" maxWidth="451.0" prefHeight="18.0" prefWidth="343.0" />
+        <Label id="frequency" fx:id="frequencyLabel" layoutX="14.0" layoutY="152.0" prefHeight="58.0" prefWidth="343.0" text="L/R Frequency:&#10; &#10;" />
+        <Button fx:id="chooseFolderButton" layoutX="14.0" layoutY="118.0" mnemonicParsing="false" prefHeight="26.0" prefWidth="114.0" text="Choose Folder" />
+        <Label fx:id="jkLabel" layoutX="143.0" layoutY="89.0" maxWidth="270.0" prefHeight="70.0" prefWidth="218.0" text="Use j and k (or MIDI Program Change) to cycle between files, or i to start playback" visible="false" wrapText="true" />
+        <Slider fx:id="octaveSlider" blockIncrement="1.0" layoutX="82.0" layoutY="198.0" majorTickUnit="1.0" max="5.0" min="-5.0" minorTickCount="0" prefHeight="42.0" prefWidth="246.0" showTickLabels="true" showTickMarks="true" snapToTicks="true" />
+        <SVGPath fx:id="octaveMidi" content="M20.15 8.26H22V15.74H20.15M13 8.26H18.43C19 8.26 19.3 8.74 19.3 9.3V14.81C19.3 15.5 19 15.74 18.38 15.74H13V11H14.87V13.91H17.5V9.95H13M10.32 8.26H12.14V15.74H10.32M2 8.26H8.55C9.1 8.26 9.41 8.74 9.41 9.3V15.74H7.59V10.15H6.5V15.74H4.87V10.15H3.83V15.74H2Z" fill="WHITE" layoutX="333.0" layoutY="194.0" pickOnBounds="true" />
+        <Label layoutX="13.0" layoutY="197.0" text="Octave" />
+      <Slider fx:id="micVolumeSlider" blockIncrement="1.0" layoutX="82.0" layoutY="237.0" majorTickUnit="1.0" max="10.0" prefHeight="42.0" prefWidth="246.0" showTickLabels="true" showTickMarks="true" value="1.0" />
+      <SVGPath fx:id="micVolumeMidi" content="M20.15 8.26H22V15.74H20.15M13 8.26H18.43C19 8.26 19.3 8.74 19.3 9.3V14.81C19.3 15.5 19 15.74 18.38 15.74H13V11H14.87V13.91H17.5V9.95H13M10.32 8.26H12.14V15.74H10.32M2 8.26H8.55C9.1 8.26 9.41 8.74 9.41 9.3V15.74H7.59V10.15H6.5V15.74H4.87V10.15H3.83V15.74H2Z" fill="WHITE" layoutX="333.0" layoutY="233.0" pickOnBounds="true" />
+      <Label layoutX="13.0" layoutY="236.0" text="Mic Volume" />
+      <Button fx:id="deleteFileButton" layoutX="14.0" layoutY="84.0" mnemonicParsing="false" prefHeight="26.0" prefWidth="114.0" text="Remove File" />
+      <Button fx:id="createFileButton" layoutX="248.0" layoutY="286.0" minHeight="30.0" mnemonicParsing="false" prefHeight="30.0" prefWidth="95.0" text="Create File" />
+      <ComboBox fx:id="createFileComboBox" layoutX="166.0" layoutY="286.0" minHeight="30.0" prefHeight="30.0" prefWidth="78.0" />
+      <TextField fx:id="createFileTextField" alignment="CENTER_RIGHT" layoutX="35.0" layoutY="286.0" prefHeight="30.0" prefWidth="127.0" />
+      <Button fx:id="editFileButton" layoutX="14.0" layoutY="51.0" mnemonicParsing="false" prefHeight="26.0" prefWidth="114.0" text="Edit File" />
     </children>
 </AnchorPane>

src/main/resources/fxml/main.fxml

@@ -198,7 +198,7 @@
          </Menu>
      </menus>
    </MenuBar>
-   <TitledPane animated="false" collapsible="false" layoutX="7.0" layoutY="33.0" minWidth="378.0" prefHeight="371.0" prefWidth="370.0" text="Main settings">
+   <TitledPane animated="false" collapsible="false" layoutX="7.0" layoutY="33.0" minHeight="371.0" minWidth="378.0" prefHeight="364.0" prefWidth="378.0" text="Main settings">
       <fx:include fx:id="general" source="general.fxml" />
    </TitledPane>
    <TitledPane animated="false" collapsible="false" layoutX="478.0" layoutY="411.0" prefHeight="334.0" prefWidth="523.0" text="Image settings">

src/main/resources/lua/demo.lua

@@ -0,0 +1,33 @@
+--
+-- .lua files can be used to make your own custom audio sources!
+-- Lua documentation: https://www.lua.org/docs.html
+--
+-- All variables are saved between calls to this script.
+--
+-- Below is a simple example of an audio effect that makes a
+-- nice visual on an oscilloscope and shows off some of the
+-- functionality available.
+--
+-- The variable 'step' used below is incremented with every
+-- call to this script, starting at 1.
+--
+
+-- sets 'theta' to 0 initially, or the previous value of
+-- 'theta' the last time this script ran
+theta = theta or 0
+
+-- updates 'theta' using 'step'
+theta = theta + math.sqrt(step) / 1000000000
+
+-- 'slider_a', 'slider_b', ..., 'slider_e' are controlled by
+-- the respective sliders in the .lua file settings
+left_scale = 0.3 * slider_a
+right_scale = 0.3 * slider_b
+
+-- Returns audio samples that will be played back
+return {
+  -- left audio channel
+  left_scale * math.tan(theta * step),
+  -- right audio channel
+  right_scale * math.tan(theta * step + math.pi / 2)
+}

src/main/resources/models/cube.obj

@@ -1,7 +1,3 @@
-# Blender v2.81 (sub 16) OBJ File: ''
-# www.blender.org
-mtllib cube.mtl
-o Cube
 v 1.000000 1.000000 -1.000000
 v 1.000000 -1.000000 -1.000000
 v 1.000000 1.000000 1.000000
@@ -10,28 +6,6 @@ v -1.000000 1.000000 -1.000000
 v -1.000000 -1.000000 -1.000000
 v -1.000000 1.000000 1.000000
 v -1.000000 -1.000000 1.000000
-vt 0.625000 0.500000
-vt 0.875000 0.500000
-vt 0.875000 0.750000
-vt 0.625000 0.750000
-vt 0.375000 0.750000
-vt 0.625000 1.000000
-vt 0.375000 1.000000
-vt 0.375000 0.000000
-vt 0.625000 0.000000
-vt 0.625000 0.250000
-vt 0.375000 0.250000
-vt 0.125000 0.500000
-vt 0.375000 0.500000
-vt 0.125000 0.750000
-vn 0.0000 1.0000 0.0000
-vn 0.0000 0.0000 1.0000
-vn -1.0000 0.0000 0.0000
-vn 0.0000 -1.0000 0.0000
-vn 1.0000 0.0000 0.0000
-vn 0.0000 0.0000 -1.0000
-usemtl Material
-s off
 f 1/1/1 5/2/1 7/3/1 3/4/1
 f 4/5/2 3/4/2 7/6/2 8/7/2
 f 8/8/3 7/9/3 5/10/3 6/11/3

src/main/resources/svg/demo.svg

@@ -0,0 +1 @@
+<svg><path d="M 0,0 a 75,75 0 1,0 150,0 a 75,75 0 1,0 -150,0"/></svg>