Merge pull request #10605 from Ultimaker/CURA-8550_lightning_infill

CURA-8550 Added lightning infill description and sub-settings level.

resources/definitions/fdmprinter.def.json

@@ -1890,7 +1890,7 @@
                 "infill_pattern":
                 {
                     "label": "Infill Pattern",
-                    "description": "The pattern of the infill material of the print. The line and zig zag infill swap direction on alternate layers, reducing material cost. The grid, triangle, tri-hexagon, cubic, octet, quarter cubic, cross and concentric patterns are fully printed every layer. Gyroid, cubic, quarter cubic and octet infill change with every layer to provide a more equal distribution of strength over each direction.",
+                    "description": "The pattern of the infill material of the print. The line and zig zag infill swap direction on alternate layers, reducing material cost. The grid, triangle, tri-hexagon, cubic, octet, quarter cubic, cross and concentric patterns are fully printed every layer. Gyroid, cubic, quarter cubic and octet infill change with every layer to provide a more equal distribution of strength over each direction. Lightning infill tries to minimize the infill, by only supporting the (internal) roofs of the object. As such, the infill percentage is only 'valid' one layer below whatever it needs to support of the model.",
                     "type": "enum",
                     "options":
                     {

resources/setting_visibility/expert.cfg

@@ -358,6 +358,10 @@ magic_mesh_surface_mode
 magic_spiralize
 smooth_spiralized_contours
 relative_extrusion
+lightning_infill_support_angle
+lightning_infill_overhang_angle
+lightning_infill_prune_angle
+lightning_infill_straightening_angle
 
 [experimental]
 support_tree_wall_thickness