Refactor pre-render function into parseFile

src/parser/ObjParser.java

@@ -56,25 +56,18 @@ public class ObjParser extends FileParser {
 
     Vector3 rotation = new Vector3(0, OBJ_ROTATE_SPEED, OBJ_ROTATE_SPEED);
 
-    shapes = preRender(object, rotation, camera);
+    shapes = new ArrayList<>();
+    // Number of frames it will take to render a full rotation of the object.
+    int numFrames = (int) (2 * Math.PI / OBJ_ROTATE_SPEED);
+
+    for (int i = 0; i < numFrames; i++) {
+      object.rotate(rotation);
+      shapes.add(camera.draw(object));
+    }
   }
 
   @Override
   public List<List<Shape>> getShapes() {
     return shapes;
   }
-
-  private static List<List<Shape>> preRender(WorldObject object, Vector3 rotation,
-      Camera camera) {
-    List<List<Shape>> preRenderedFrames = new ArrayList<>();
-    // Number of frames it will take to render a full rotation of the object.
-    int numFrames = (int) (2 * Math.PI / OBJ_ROTATE_SPEED);
-
-    for (int i = 0; i < numFrames; i++) {
-      object.rotate(rotation);
-      preRenderedFrames.add(camera.draw(object));
-    }
-
-    return preRenderedFrames;
-  }
 }