diff --git a/fastplotlib/graphics/_features/_selection_features.py b/fastplotlib/graphics/_features/_selection_features.py
index e499e72c9..c385f820f 100644
--- a/fastplotlib/graphics/_features/_selection_features.py
+++ b/fastplotlib/graphics/_features/_selection_features.py
@@ -48,7 +48,7 @@ def __init__(self, axis: str, value: float, limits: tuple[float, float]):
         self._value = value
 
     @property
-    def value(self) -> float:
+    def value(self) -> np.float32:
         """
         selection, data x or y value
         """
@@ -56,7 +56,7 @@ def value(self) -> float:
 
     def set_value(self, selector, value: float):
         # clip value between limits
-        value = np.clip(value, self._limits[0], self._limits[1])
+        value = np.clip(value, self._limits[0], self._limits[1], dtype=np.float32)
 
         # set position
         if self._axis == "x":
diff --git a/fastplotlib/graphics/selectors/_base_selector.py b/fastplotlib/graphics/selectors/_base_selector.py
index 3729adda5..30643bbe4 100644
--- a/fastplotlib/graphics/selectors/_base_selector.py
+++ b/fastplotlib/graphics/selectors/_base_selector.py
@@ -280,7 +280,16 @@ def _move_to_pointer(self, ev):
         elif self.axis == "y":
             offset = self.offset[1]
 
-        current_pos_world: np.ndarray = self.selection + offset
+        if self.selection.size > 1:
+            # linear region selectors
+            # TODO: get center for rectangle and polygon selectors
+            center = self.selection.mean(axis=0)
+
+        else:
+            # linear selectors
+            center = self.selection
+
+        current_pos_world: np.ndarray = center + offset
 
         world_pos = self._plot_area.map_screen_to_world(ev)
 
diff --git a/fastplotlib/graphics/selectors/_rectangle.py b/fastplotlib/graphics/selectors/_rectangle.py
index aae99803e..38bb0d2f9 100644
--- a/fastplotlib/graphics/selectors/_rectangle.py
+++ b/fastplotlib/graphics/selectors/_rectangle.py
@@ -515,3 +515,6 @@ def _move_graphic(self, delta: np.ndarray):
             self._selection.set_value(self, (xmin, xmax, ymin_new, ymax))
         if self._move_info.source == self.edges[3]:
             self._selection.set_value(self, (xmin, xmax, ymin, ymax_new))
+
+    def _move_to_pointer(self, ev):
+        pass