Improved error handling so that trying to load a fractal from file with the...

Improved error handling so that trying to load a fractal from file with the same name as a file in target gives proper error message.

.gitignore

@@ -8,6 +8,8 @@ target/
 .idea/jarRepositories.xml
 .idea/compiler.xml
 .idea/libraries/
+.idea/
+.DS_Store
 *.iws
 *.iml
 *.ipr

src/main/java/edu/ntnu/stud/chaosgame/controller/game/GuiButtonController.java

@@ -304,11 +304,15 @@ public class GuiButtonController {
     if (selectedFile != null) {
       Path dest = Paths.get(
           "src/main/resources/descriptions/saved_descriptions/" + selectedFile.getName());
-      try {
-        Files.copy(selectedFile.toPath(), dest);
-        factory = new ChaosGameDescriptionFactory();
-      } catch (IOException e) {
-        PopupManager.displayError("Error", "Could not load the fractal from file.");
+      if (Files.exists(dest)) {
+        PopupManager.displayError("Error", "File already exists in the target location.");
+      } else {
+        try {
+          Files.copy(selectedFile.toPath(), dest);
+          factory = new ChaosGameDescriptionFactory();
+        } catch (IOException e) {
+          PopupManager.displayError("Error", "Could not load the fractal from file.");
+        }
       }
     }
   }

src/main/java/edu/ntnu/stud/chaosgame/model/game/ChaosCanvas.java

@@ -34,17 +34,17 @@ public class ChaosCanvas {
   /**
    * The minimum coordinates of the canvas.
    */
-  private Vector2D minCoords;
+  private final Vector2D minCoords;
 
   /**
    * The maximum coordinates of the canvas.
    */
-  private Vector2D maxCoords;
+  private final Vector2D maxCoords;
 
   /**
    * Affine transformation for converting coordinates to canvas indices.
    */
-  private AffineTransform2D transformCoordsToIndices;
+  private final AffineTransform2D transformCoordsToIndices;
 
   /**
    * Parameterized constructor for the class.
@@ -88,7 +88,6 @@ public class ChaosCanvas {
     if (xindex >= 0 && xindex < width && yindex >= 0 && yindex < height) {
       canvas[xindex][yindex] = 1;
       canvasIntensityArray[xindex][yindex]++;
-
     }
   }
 

src/main/resources/descriptions/saved_descriptions/Heighway-Dragon.txt

+Affine2D
+Heighway-Dragon
+-1.0, -1.0
+1.5, 1.5
+0.5, -0.5, 0.5, 0.5, 0.0, 0.0
+-0.5, -0.5, 0.5, -0.5, 1.0, 0.0

src/main/resources/descriptions/saved_descriptions/desc_10.txt

+Affine2D
+Heighway-Dragon
+-1, -1              # Lower left
+1.5, 1.5              # Upper right
+0.5, -0.5, 0.5, 0.5, 0, 0    # 1st transform
+-0.5, -0.5, 0.5, -0.5, 1, 0  # 2nd transform
+

src/main/resources/descriptions/saved_descriptions/test.txt

+Affine2D
+Heighway-Dragon
+-1, -1              # Lower left
+1.5, 1.5              # Upper right
+0.5, -0.5, 0.5, 0.5, 0, 0    # 1st transform
+-0.5, -0.5, 0.5, -0.5, 1, 0  # 2nd transform
+

src/main/resources/descriptions/saved_descriptions/testytest.txt

+Affine2D # Type of transform
+Testytest
+0, 0 # Lower Left
+1, 1 # Upper Right
+.5, 0, 0, .5, 0, 0 # 1st transform (a00, a01, a10, a11, b0, b1)
+.5, 0, 0, .5, .25, .5 # 2nd transform
+.5, 0, 0, .5, .5, 0   # 3rd transform
\ No newline at end of file

src/test/java/edu/ntnu/stud/chaosgame/controller/game/ChaosGameTest.java

@@ -14,8 +14,14 @@ import org.junit.jupiter.api.Test;
  */
 public class ChaosGameTest {
 
+  /**
+   * The ChaosGame object for testing.
+   */
   private ChaosGame game;
 
+  /**
+   * Set up the test environment by defining the fields.
+   */
   @BeforeEach
   void setUp() {
     ChaosGameDescriptionFactory factory = new ChaosGameDescriptionFactory();