Grease Pencil: Add LineArt modifier

This adds the LineArt grease pencil modifier.

It takes objects or collections as input and generates various grease
pencil lines from these objects with the help of the active scene
camera. For example it can generate contour lines, intersection lines
and crease lines to name a few.

This is really useful as artists can then use 3D meshes to automatically
generate grease pencil lines for characters, enviroments or other
visualization purposes.

These lines can then be baked and edited as regular grease pencil lines.

Reviewed By: Sebastian Parborg, Antonio Vazquez, Matias Mendiola

Differential Revision: http://developer.blender.org/D8758

1 files changed, 5 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_gpencil.h b/source/blender/blenkernel/BKE_gpencil.h
index 5cfdcf241d1..a0a3f30d6d8 100644
--- a/source/blender/blenkernel/BKE_gpencil.h
+++ b/source/blender/blenkernel/BKE_gpencil.h
@@ -212,6 +212,10 @@ void BKE_gpencil_layer_mask_sort(struct bGPdata *gpd, struct bGPDlayer *gpl);
 void BKE_gpencil_layer_mask_sort_all(struct bGPdata *gpd);
 void BKE_gpencil_layer_frames_sort(struct bGPDlayer *gpl, bool *r_has_duplicate_frames);
 
+struct bGPDlayer *BKE_gpencil_layer_get_by_name(struct bGPdata *gpd,
+                                                char *name,
+                                                int first_if_not_found);
+
 /* Brush */
 struct Material *BKE_gpencil_brush_material_get(struct Brush *brush);
 void BKE_gpencil_brush_material_set(struct Brush *brush, struct Material *material);
@@ -231,6 +235,7 @@ struct Material *BKE_gpencil_object_material_new(struct Main *bmain,
                                                  int *r_index);
 
 int BKE_gpencil_object_material_index_get(struct Object *ob, struct Material *ma);
+int BKE_gpencil_object_material_get_index_name(struct Object *ob, char *name);
 
 struct Material *BKE_gpencil_object_material_from_brush_get(struct Object *ob,
                                                             struct Brush *brush);