Add bulge effect

src/main/java/sh/ball/audio/effect/BulgeEffect.java

@@ -0,0 +1,24 @@
+package sh.ball.audio.effect;
+
+import sh.ball.shapes.Vector2;
+
+public class BulgeEffect implements SettableEffect {
+
+  private double bulge = 0.1;
+
+  @Override
+  public Vector2 apply(int count, Vector2 vector) {
+    double translatedBulge = -bulge + 1;
+
+    double r = vector.magnitude();
+    double theta = Math.atan2(vector.y, vector.x);
+    double rn = Math.pow(r, translatedBulge);
+
+    return new Vector2(rn * Math.cos(theta), rn * Math.sin(theta));
+  }
+
+  @Override
+  public void setValue(double value) {
+    this.bulge = value;
+  }
+}

src/main/java/sh/ball/audio/effect/EffectType.java

@@ -31,7 +31,8 @@ public enum EffectType {
   LUA_D(-1),
   LUA_E(-1),
   DELAY_DECAY(101),
-  DELAY_ECHO_LENGTH(-1),;
+  DELAY_ECHO_LENGTH(-1),
+  BULGE(53);
 
   public final int precedence;
 

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

@@ -23,7 +23,6 @@ import sh.ball.parser.lua.LuaExecutor;
 import sh.ball.shapes.Shape;
 import sh.ball.shapes.Vector2;
 
-import java.awt.*;
 import java.net.URL;
 import java.nio.charset.StandardCharsets;
 import java.util.*;
@@ -94,6 +93,8 @@ public class EffectsController implements Initializable, SubController {
   @FXML
   private EffectComponentGroup delayDecay;
   @FXML
+  private EffectComponentGroup bulge;
+  @FXML
   private TextField translationXTextField;
   @FXML
   private TextField translationYTextField;
@@ -204,6 +205,7 @@ public class EffectsController implements Initializable, SubController {
     backingMidi.setAnimator(new EffectAnimator(DEFAULT_SAMPLE_RATE, new ConsumerEffect(audioPlayer::setBackingMidiVolume)));
     delayDecay.setAnimator(new EffectAnimator(DEFAULT_SAMPLE_RATE, delayEffect));
     delayEchoLength.setAnimator(new EffectAnimator(DEFAULT_SAMPLE_RATE, new ConsumerEffect((value) -> delayEffect.setEchoLength(value))));
+    bulge.setAnimator(new EffectAnimator(DEFAULT_SAMPLE_RATE, new BulgeEffect()));
 
     effects().forEach(effect -> {
       effect.setEffectUpdater(this::updateEffect);
@@ -298,7 +300,8 @@ public class EffectsController implements Initializable, SubController {
       rotateSpeed,
       backingMidi,
       delayDecay,
-      delayEchoLength
+      delayEchoLength,
+      bulge
     );
   }
 

src/main/java/sh/ball/shapes/Vector2.java

@@ -113,4 +113,8 @@ public final class Vector2 extends Shape {
       ", y=" + y +
       '}';
   }
+
+  public double magnitude() {
+    return Math.sqrt(x * x + y * y);
+  }
 }

src/main/resources/fxml/effects.fxml

@@ -13,7 +13,7 @@
 <?import javafx.scene.shape.SVGPath?>
 <?import sh.ball.gui.components.EffectComponentGroup?>
 
-<ScrollPane fitToHeight="true" fitToWidth="true" hbarPolicy="NEVER" prefHeight="1168.0" prefWidth="605.0" xmlns="http://javafx.com/javafx/19" xmlns:fx="http://javafx.com/fxml/1" fx:controller="sh.ball.gui.controller.EffectsController">
+<ScrollPane fitToHeight="true" fitToWidth="true" hbarPolicy="NEVER" prefHeight="1214.0" prefWidth="605.0" xmlns="http://javafx.com/javafx/19" xmlns:fx="http://javafx.com/fxml/1" fx:controller="sh.ball.gui.controller.EffectsController">
    <content>
       <FlowPane prefHeight="1094.0" prefWidth="605.0" prefWrapLength="100.0" rowValignment="BASELINE">
          <children>
@@ -135,11 +135,12 @@
                   </AnchorPane>
                    <EffectComponentGroup fx:id="traceMax" increment="0.005" label="traceMax" majorTickUnit="0.1" max="1.0" min="0.0" name="Trace max" type="TRACE_MAX" value="0.5" />
                    <EffectComponentGroup fx:id="traceMin" increment="0.005" label="traceMin" majorTickUnit="0.1" max="1.0" min="0.0" name="Trace min" type="TRACE_MIN" value="0.5" />
+                  <EffectComponentGroup fx:id="bulge" increment="0.005" label="bulge" majorTickUnit="0.1" max="1.0" min="0.0" name="Bulge" type="BULGE" value="0.1" />
                </children>
             </VBox>
             <VBox>
                <children>
-                  <Label alignment="CENTER" prefWidth="601.0" text="Output" textAlignment="JUSTIFY">
+                  <Label alignment="CENTER" prefWidth="601.0" text="Delay" textAlignment="JUSTIFY">
                      <padding>
                         <Insets bottom="5.0" />
                      </padding>