add explorer class

Author: phiarchitect

src/geometor/explorer/explorer.py

@@ -1,3 +1,51 @@
 """
 explorer
-"""
+"""
+from matplotlib.widgets import Button
+
+class Explorer:
+    """
+    The Explorer class encapsulates the interactive exploration of geometric
+    plots. It extends the functionalities of the Sequencer to allow the user
+    to navigate through the elements using buttons.
+
+    Attributes:
+        sequencer (Sequencer): The Sequencer object containing the geometric model and plot.
+    """
+    def __init__(self, sequencer: Sequencer):
+        """
+        Initializes the Explorer with the given Sequencer object.
+
+        Args:
+            sequencer (Sequencer): The Sequencer object containing the geometric model and plot.
+        """
+        self.sequencer = sequencer
+        self.current_index = 0
+        self.setup_buttons()
+
+    def setup_buttons(self):
+        """Sets up the buttons for navigation."""
+        axprev = self.sequencer.fig.add_axes([0.7, 0.05, 0.1, 0.075])
+        axnext = self.sequencer.fig.add_axes([0.81, 0.05, 0.1, 0.075])
+        bnext = Button(axnext, 'Next')
+        bprev = Button(axprev, 'Previous')
+        bnext.on_clicked(self.next_element)
+        bprev.on_clicked(self.prev_element)
+
+    def next_element(self, event):
+        """Callback for the Next button. Moves to the next element."""
+        self.current_index += 1
+        self.current_index %= len(self.sequencer.model.items())
+        self.update_plot()
+
+    def prev_element(self, event):
+        """Callback for the Previous button. Moves to the previous element."""
+        self.current_index -= 1
+        self.current_index %= len(self.sequencer.model.items())
+        self.update_plot()
+
+    def update_plot(self):
+        """Updates the plot based on the current index."""
+        # Logic to update the plot with the current element
+        pass
+