Added one more check for roundrect

Author: Ashtreighlia

adafruit_display_shapes/rect.py

@@ -59,12 +59,12 @@ def __init__(
         outline: Optional[int] = None,
         stroke: int = 1,
     ) -> None:
-        self._bitmap = displayio.Bitmap(width, height, 2)
-        self._palette = displayio.Palette(2)
-
         if width <= 0 or height <= 0:
             raise ValueError("Width and height must be greater than 0")
 
+        self._bitmap = displayio.Bitmap(width, height, 2)
+        self._palette = displayio.Palette(2)
+
         if outline is not None:
             self._palette[1] = outline
             for w in range(width):

adafruit_display_shapes/roundrect.py

@@ -52,6 +52,11 @@ def __init__(
         outline: Optional[int] = None,
         stroke: int = 1,
     ) -> None:
+        if r > width / 2 or r > height / 2:
+            raise ValueError("Radius too large for given dimensions")
+        if width <= 0 or height <= 0:
+            raise ValueError("Width and height must be greater than 0")
+
         self._palette = displayio.Palette(3)
         self._palette.make_transparent(0)
         self._bitmap = displayio.Bitmap(width, height, 3)
@@ -68,9 +73,6 @@ def __init__(
             y_offset=height - 2 * r - 1,
         )
 
-        if width <= 0 or height <= 0:
-            raise ValueError("Width and height must be greater than 0")
-
         if fill is not None:
             self._palette[2] = fill
             self._palette.make_opaque(2)