Add Onion Skin support to Annotations

The old onion skinning used in 2.7x has been ported and converted to 2.8. Only basic features have been included. For more advanced onion skin features, use grease pencil objects.

Onion Skin is supported in View 3D and Sequencer.

1 files changed, 8 insertions, 0 deletions

diff --git a/source/blender/makesdna/DNA_gpencil_types.h b/source/blender/makesdna/DNA_gpencil_types.h
index cebdc4b29b9..43ce3649db3 100644
--- a/source/blender/makesdna/DNA_gpencil_types.h
+++ b/source/blender/makesdna/DNA_gpencil_types.h
@@ -272,6 +272,14 @@ typedef struct bGPDlayer {
 	int blend_mode;         /* blend modes */
 	char pad_[4];
 
+	/* annotation onion skin */
+	short gstep;			/* Ghosts Before: max number of ghost frames to show between active frame and the one before it (0 = only the ghost itself) */
+	short gstep_next;		/* Ghosts After:  max number of ghost frames to show after active frame and the following it    (0 = only the ghost itself) */
+
+	float gcolor_prev[3];	/* color for ghosts before the active frame */
+	float gcolor_next[3];	/* color for ghosts after the active frame */
+	char pad_1[4];
+
 	bGPDlayer_Runtime runtime;
 } bGPDlayer;