Get one shape transform (#446)

Author: melonora

src/spatialdata_plot/pl/render.py

@@ -185,7 +185,7 @@ def _render_shapes(
             sdata_filt.shapes[element].loc[is_point, "geometry"] = _geometry[is_point].buffer(scale.to_numpy())
 
         # apply transformations to the individual points
-        element_trans = get_transformation(sdata_filt.shapes[element])
+        element_trans = get_transformation(sdata_filt.shapes[element], to_coordinate_system=coordinate_system)
         tm = _get_transformation_matrix_for_datashader(element_trans)
         transformed_element = sdata_filt.shapes[element].transform(
             lambda x: (np.hstack([x, np.ones((x.shape[0], 1))]) @ tm)[:, :2]
@@ -195,7 +195,7 @@ def _render_shapes(
         )
 
         plot_width, plot_height, x_ext, y_ext, factor = _get_extent_and_range_for_datashader_canvas(
-            transformed_element, coordinate_system, ax, fig_params
+            transformed_element, "global", ax, fig_params
         )
 
         cvs = ds.Canvas(plot_width=plot_width, plot_height=plot_height, x_range=x_ext, y_range=y_ext)