feat(selection): separate selection geometry from image content processing

- Introduced a new design for selection rasterization that decouples the selection geometry from the image content, ensuring that the SelectionMask is independent of the source image's alpha and color.
- Updated the `rasterize_selection_path` function to only accept selection paths and image dimensions, removing parameters related to source alpha and alpha thresholds.
- Implemented a new approach for handling selection paths using non-zero winding fill, ensuring overlapping areas are preserved.
- Enhanced performance by utilizing a scanline algorithm for rasterization, significantly reducing processing time for high-resolution images.
- Updated internal documentation and added comprehensive tests to validate the new behavior and performance improvements.
- Ensured backward compatibility by maintaining existing interfaces where necessary while introducing breaking changes in the selection processing logic.

tools/node_assets/build_mesh_plane.py

@@ -42,15 +42,6 @@ def build_mesh_plane_group():
     thickness.min_value = 0.0
     thickness.max_value = 10000.0
     thickness.subtype = "DISTANCE"
-    data_panel = interface.new_panel(name="Data", default_closed=True)
-    material = new_socket(
-        interface,
-        "Material",
-        "INPUT",
-        "NodeSocketMaterial",
-        parent=data_panel,
-    )
-    material.hide_in_modifier = True
     new_socket(interface, "Geometry", "OUTPUT", "NodeSocketGeometry")
 
     nodes = group.nodes
@@ -58,9 +49,8 @@ def build_mesh_plane_group():
     geometry_input = new_group_input(nodes, (-1800.0, 500.0), {"Geometry"})
     subdivide_input = new_group_input(nodes, (-1800.0, 0.0), {"Subdivide"})
     thickness_input = new_group_input(nodes, (100.0, -250.0), {"Thickness"})
-    material_input = new_group_input(nodes, (900.0, 0.0), {"Material"})
     output = nodes.new("NodeGroupOutput")
-    output.location = (1350.0, 500.0)
+    output.location = (1750.0, 500.0)
 
     bounds = nodes.new("GeometryNodeBoundBox")
     bounds.location = (-1600.0, 500.0)
@@ -196,7 +186,7 @@ def build_mesh_plane_group():
     links.new(depth_ratio.outputs[0], rounded_depth.inputs[0])
     depth_segments = nodes.new("ShaderNodeMath")
     depth_segments.operation = "MAXIMUM"
-    depth_segments.inputs[1].default_value = 1.0
+    depth_segments.inputs[1].default_value = 3.0
     depth_segments.location = (700.0, -100.0)
     links.new(rounded_depth.outputs[0], depth_segments.inputs[0])
     depth_vertices = nodes.new("ShaderNodeMath")
@@ -239,11 +229,27 @@ def build_mesh_plane_group():
     links.new(place_grid.outputs["Geometry"], geometry_switch.inputs["False"])
     links.new(place_cube.outputs["Geometry"], geometry_switch.inputs["True"])
 
-    set_material = nodes.new("GeometryNodeSetMaterial")
-    set_material.location = (1050.0, 500.0)
-    links.new(geometry_switch.outputs["Output"], set_material.inputs["Geometry"])
-    links.new(material_input.outputs["Material"], set_material.inputs["Material"])
-    links.new(set_material.outputs["Geometry"], output.inputs["Geometry"])
+    capture_source = nodes.new("GeometryNodeCaptureAttribute")
+    capture_source.domain = "POINT"
+    capture_source.capture_items.clear()
+    capture_source.capture_items.new("BOOLEAN", "Source")
+    capture_source.inputs["Source"].default_value = True
+    capture_source.location = (750.0, 750.0)
+    links.new(geometry_input.outputs["Geometry"], capture_source.inputs["Geometry"])
+    join_material = nodes.new("GeometryNodeJoinGeometry")
+    join_material.location = (1000.0, 500.0)
+    links.new(geometry_switch.outputs["Output"], join_material.inputs["Geometry"])
+    links.new(capture_source.outputs["Geometry"], join_material.inputs["Geometry"])
+    set_material_index = nodes.new("GeometryNodeSetMaterialIndex")
+    set_material_index.inputs["Material Index"].default_value = 0
+    set_material_index.location = (1250.0, 500.0)
+    links.new(join_material.outputs["Geometry"], set_material_index.inputs["Geometry"])
+    delete_source = nodes.new("GeometryNodeDeleteGeometry")
+    delete_source.domain = "POINT"
+    delete_source.location = (1500.0, 500.0)
+    links.new(set_material_index.outputs["Geometry"], delete_source.inputs["Geometry"])
+    links.new(capture_source.outputs["Source"], delete_source.inputs["Selection"])
+    links.new(delete_source.outputs["Geometry"], output.inputs["Geometry"])
 
     group.color_tag = "GEOMETRY"
     group.description = (