LineArt: Shadow and related functionalities.

This patch includes the full shadow functionality for LineArt:

- Light contour and cast shadow lines.
- Lit/shaded region selection.
- Enclosed light/shadow shape calculation.
- Silhouette/anti-silhouette selection.
- Intersection priority based on shadow edge identifier.

Reviewed By: Sebastian Parborg (zeddb)

Differential Revision: https://developer.blender.org/D15109

1 files changed, 6 insertions, 0 deletions

diff --git a/release/scripts/startup/bl_ui/properties_collection.py b/release/scripts/startup/bl_ui/properties_collection.py
index 220e35041c1..95debb259b0 100644
--- a/release/scripts/startup/bl_ui/properties_collection.py
+++ b/release/scripts/startup/bl_ui/properties_collection.py
@@ -96,6 +96,12 @@ class COLLECTION_PT_lineart_collection(CollectionButtonsPanel, Panel):
             if i == 3:
                 row = col.row(align=True)
 
+        row = layout.row(heading="Intersection Priority")
+        row.prop(collection, "use_lineart_intersection_priority", text="")
+        subrow = row.row()
+        subrow.active = collection.use_lineart_intersection_priority
+        subrow.prop(collection, "lineart_intersection_priority", text="")
+
 
 class COLLECTION_PT_collection_custom_props(CollectionButtonsPanel, PropertyPanel, Panel):
     _context_path = "collection"