Remove images2gif and use PIL instead

README.md

@@ -40,7 +40,6 @@ Rhodium has several optional dependencies that enable additional graphical and a
 2. `pip install pywin32` - Required to connect to Excel models (`ExcelModel`)
 3. `pip install openmdao` - Required to connect to OpenMDAO models (`OpenMDAOModel`)
 4. `pip install pyper` - Required to connect to R models (`RModel`)
-4. `pip install images2gif` - Required to produce 3D animated GIFs (`animate3d`)
 5. [J3Py](https://github.com/Project-Platypus/J3Py) - Interactive 3D visualizations
 
 ## Resources

pyproject.toml

@@ -31,7 +31,7 @@ dynamic = ["version"]  # Version is read from rhodium/__init__.py
 [project.optional-dependencies]
 test = ["pytest", "mock", "rhodium[examples]"]
 openmdao = ["openmdao"]
-examples = ["pandas[excel]", "images2gif", "pyper<=1.1.2"]
+examples = ["pandas[excel]", "pyper<=1.1.2"]
 
 [tool.setuptools.dynamic]
 version = {attr = "rhodium.__version__"}

rhodium/plot.py

@@ -673,7 +673,6 @@ def animate3d(prefix, dir="images/", steps=36, transform=(10, 0, 0), **kwargs):
     import math
     import inspect
     from PIL import Image
-    from images2gif import writeGif
 
     base_dir = os.path.join(dir, prefix)
 
@@ -690,15 +689,15 @@ def animate3d(prefix, dir="images/", steps=36, transform=(10, 0, 0), **kwargs):
         else:
             ax.azim += transform[0]
             ax.elev += transform[1]
-            ax.dist += transform[2]
+            # ax.dist += transform[2]  # This is deprecated, use ax.set_box_aspect(None, zoom=2) instead
 
         filename = os.path.join(base_dir, 'img' + str(n).zfill(digits) + '.png')
         plt.savefig(filename, bbox_inches='tight')
         files.append(filename)
-
+      
     images = [Image.open(file) for file in files]
     file_path_name = os.path.join(dir, prefix + '.gif')
-    writeGif(file_path_name, images, **kwargs)
+    images[0].save(file_path_name, save_all=True, append_images=images[1:], **kwargs)
 
 def parallel_coordinates(model, data, c=None, cols=None, ax=None, colors=None,
                          use_columns=False, xticks=None, colormap=None,