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

3 files changed, 18 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"
diff --git a/release/scripts/startup/bl_ui/properties_material.py b/release/scripts/startup/bl_ui/properties_material.py
index 44fa93054d3..ba6ed9ae6a2 100644
--- a/release/scripts/startup/bl_ui/properties_material.py
+++ b/release/scripts/startup/bl_ui/properties_material.py
@@ -287,6 +287,12 @@ class MATERIAL_PT_lineart(MaterialButtonsPanel, Panel):
         row = layout.row(align=True, heading="Custom Occlusion")
         row.prop(lineart, "mat_occlusion", text="Levels")
 
+        row = layout.row(heading="Intersection Priority")
+        row.prop(lineart, "use_intersection_priority_override", text="")
+        subrow = row.row()
+        subrow.active = lineart.use_intersection_priority_override
+        subrow.prop(lineart, "intersection_priority", text="")
+
 
 classes = (
     MATERIAL_MT_context_menu,
diff --git a/release/scripts/startup/bl_ui/properties_object.py b/release/scripts/startup/bl_ui/properties_object.py
index 904c2af3a5e..7afa2f81b97 100644
--- a/release/scripts/startup/bl_ui/properties_object.py
+++ b/release/scripts/startup/bl_ui/properties_object.py
@@ -317,6 +317,12 @@ class OBJECT_PT_lineart(ObjectButtonsPanel, Panel):
         subrow.active = lineart.use_crease_override
         subrow.prop(lineart, "crease_threshold", slider=True, text="")
 
+        row = layout.row(heading="Intersection Priority")
+        row.prop(lineart, "use_intersection_priority_override", text="")
+        subrow = row.row()
+        subrow.active = lineart.use_intersection_priority_override
+        subrow.prop(lineart, "intersection_priority", text="")
+
 
 class OBJECT_PT_motion_paths(MotionPathButtonsPanel, Panel):
     #bl_label = "Object Motion Paths"