Determining bounds of polygon

Author: ProgrammingOperative

scripts/gpd_helper.py

@@ -7,4 +7,28 @@
 
 class GpdHelper:
     def __init__(self) -> None:
-        pass
+        self.input_epsg = input_epsg
+        self.output_epsg = output_epsg
+    
+
+    def get_bound_from_polygon(self, polygon: Polygon) -> tuple:
+        """ Computes bounds value for the given polygon
+
+        Args:
+            polygon (Polygon): Shapely geometry object describing the polygon.
+
+        Returns:
+            tuple: A tuple of Bounds object and a string of a given polygon in a form accepted by the pdal pipeline.
+        """
+        polygon_df = gpd.GeoDataFrame([polygon], columns=['geometry'])
+        polygon_df.set_crs(epsg=self.output_epsg, inplace=True)
+        polygon_df['geometry'] = polygon_df['geometry'].to_crs(epsg=self.input_epsg)
+        xmin, ymin, xmax, ymax = polygon_df['geometry'][0].bounds
+        bound = Bounds(xmin, xmax, ymin, ymax)
+        x_cord, y_cord = polygon_df['geometry'][0].exterior.coords.xy
+        polygon_str = self.get_polygon_str(x_cord, y_cord)
+
+        return bound, polygon_str
+
+
+