Add comprehensive tests for image processing and mask functionalities

- Introduced tests for color image handling, ensuring source preservation and premultiplied alpha usage.
- Implemented tests for brush stroke operations, validating segment boundaries and brush anti-aliasing.
- Added tests for frame anti-aliasing, confirming correct rendering behavior with various alpha values and depth settings.
- Created tests for frame projection, ensuring accurate overlap calculations and half-plane clipping.
- Developed tests for image premultiplied retention, verifying behavior during loading and packing processes.
- Added undo functionality tests for mask operations, ensuring single transaction behavior during edits.

src/anyimage/properties.py

@@ -192,27 +192,46 @@ def upscale_model_label(model_key):
     return model.label if model is not None else model_key
 
 
-def refine_selection_property():
-    return bpy.props.BoolProperty(
-        name="Refine Selection",
-        description="Use BEN2 to refine the selection to foreground content",
-        default=False,
+def mask_gesture_property():
+    return bpy.props.EnumProperty(
+        name="Gesture",
+        description="Shape used to edit image Alpha",
+        items=(
+            ("LASSO", "Lasso", "Draw a closed freehand area"),
+            ("BRUSH", "Brush", "Paint with a circular brush"),
+            ("POLYLINE", "Polyline", "Click points to define a closed area"),
+        ),
+        default="LASSO",
     )
 
 
-def crop_invert_property():
-    return bpy.props.BoolProperty(
-        name="Invert",
-        description="Keep the area outside the crop selection",
-        default=False,
+def mask_mode_property():
+    return bpy.props.EnumProperty(
+        name="Mode",
+        description="How the gesture changes image Alpha",
+        items=(
+            ("SET", "Set", "Keep current Alpha inside the gesture", "SELECT_SET", 0),
+            ("ADD", "Add", "Extend Alpha with the gesture", "SELECT_EXTEND", 1),
+            (
+                "SUBTRACT",
+                "Subtract",
+                "Remove Alpha inside the gesture",
+                "SELECT_SUBTRACT",
+                2,
+            ),
+        ),
+        default="SUBTRACT",
     )
 
 
-def keep_original_property():
-    return bpy.props.BoolProperty(
-        name="Keep Original",
-        description="Create a crop result while preserving the source Image Empty",
-        default=False,
+def mask_radius_property():
+    return bpy.props.IntProperty(
+        name="Radius",
+        description="Brush radius in Viewport pixels",
+        default=25,
+        min=1,
+        soft_max=500,
+        subtype="PIXEL",
     )
 
 
@@ -256,17 +275,10 @@ def cutout_mesh_detail_property():
 class AnyImageSettings(bpy.types.PropertyGroup):
     cutout_mesh_detail: cutout_mesh_detail_property()
     cutout_generate_normal: cutout_generate_normal_property()
-    cutout_refine_selection: refine_selection_property()
     cutout_inward_axis: cutout_inward_axis_property()
-    crop_box_refine_selection: refine_selection_property()
-    crop_box_invert: crop_invert_property()
-    crop_box_keep_original: keep_original_property()
-    crop_lasso_refine_selection: refine_selection_property()
-    crop_lasso_invert: crop_invert_property()
-    crop_lasso_keep_original: keep_original_property()
-    crop_polyline_invert: crop_invert_property()
-    crop_polyline_keep_original: keep_original_property()
-    crop_perspective_keep_original: keep_original_property()
+    mask_gesture: mask_gesture_property()
+    mask_mode: mask_mode_property()
+    mask_radius: mask_radius_property()
     input_path: bpy.props.StringProperty(
         name="Image or Video",
         description="A single image or video file used for reconstruction",