GPencil MultiStroke modifier

This patch includes a modifiers that developed for NPR rendering.

- MultiStroke modifier that generates multiple strokes around the original ones.

Differential Revision: https://developer.blender.org/D5795

1 files changed, 18 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_gpencil.h b/source/blender/blenkernel/BKE_gpencil.h
index d09917a9e41..21356db8abf 100644
--- a/source/blender/blenkernel/BKE_gpencil.h
+++ b/source/blender/blenkernel/BKE_gpencil.h
@@ -125,6 +125,12 @@ struct bGPDstroke *BKE_gpencil_add_stroke(struct bGPDframe *gpf,
                                           int totpoints,
                                           short thickness);
 
+struct bGPDstroke *BKE_gpencil_add_stroke_existing_style(struct bGPDframe *gpf,
+                                                         struct bGPDstroke *existing,
+                                                         int mat_idx,
+                                                         int totpoints,
+                                                         short thickness);
+
 /* Stroke and Fill - Alpha Visibility Threshold */
 #define GPENCIL_ALPHA_OPACITY_THRESH 0.001f
 #define GPENCIL_STRENGTH_MIN 0.003f
@@ -238,6 +244,18 @@ bool BKE_gpencil_smooth_stroke_uv(struct bGPDstroke *gps, int point_index, float
 bool BKE_gpencil_close_stroke(struct bGPDstroke *gps);
 void BKE_gpencil_dissolve_points(struct bGPDframe *gpf, struct bGPDstroke *gps, const short tag);
 
+bool BKE_gpencil_stretch_stroke(struct bGPDstroke *gps, const float dist, const float tip_length);
+bool BKE_gpencil_trim_stroke_points(struct bGPDstroke *gps,
+                                    const int index_from,
+                                    const int index_to);
+bool BKE_gpencil_split_stroke(struct bGPDframe *gpf,
+                              struct bGPDstroke *gps,
+                              const int before_index,
+                              struct bGPDstroke **remaining_gps);
+bool BKE_gpencil_shrink_stroke(struct bGPDstroke *gps, const float dist);
+
+float BKE_gpencil_stroke_length(const struct bGPDstroke *gps, bool use_3d);
+
 void BKE_gpencil_get_range_selected(struct bGPDlayer *gpl, int *r_initframe, int *r_endframe);
 float BKE_gpencil_multiframe_falloff_calc(
     struct bGPDframe *gpf, int actnum, int f_init, int f_end, struct CurveMapping *cur_falloff);