GPencil: Merge GSoC curve edit mode

Differential Revision: https://developer.blender.org/D8660

This patch is the result of the GSoC 2020 "Editing Grease Pencil Strokes
Using Curves" project. It adds a submode to greasepencil edit mode that
allows for the transformation of greasepencil strokes using bezier
curves. More information about the project can be found
here: https://wiki.blender.org/wiki/User:Filedescriptor/GSoC_2020.

1 files changed, 21 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_gpencil_curve.h b/source/blender/blenkernel/BKE_gpencil_curve.h
index c61427c6c4a..1821972469c 100644
--- a/source/blender/blenkernel/BKE_gpencil_curve.h
+++ b/source/blender/blenkernel/BKE_gpencil_curve.h
@@ -30,6 +30,10 @@ extern "C" {
 struct Main;
 struct Object;
 struct Scene;
+struct bGPdata;
+struct bGPDlayer;
+struct bGPDstroke;
+struct bGPDcurve;
 
 void BKE_gpencil_convert_curve(struct Main *bmain,
                                struct Scene *scene,
@@ -39,6 +43,23 @@ void BKE_gpencil_convert_curve(struct Main *bmain,
                                const float scale_thickness,
                                const float sample);
 
+struct bGPDcurve *BKE_gpencil_stroke_editcurve_generate(struct bGPDstroke *gps,
+                                                        const float error_threshold,
+                                                        const float corner_angle,
+                                                        const float stroke_radius);
+void BKE_gpencil_stroke_editcurve_update(struct bGPdata *gpd,
+                                         struct bGPDlayer *gpl,
+                                         struct bGPDstroke *gps);
+void BKE_gpencil_editcurve_stroke_sync_selection(struct bGPDstroke *gps, struct bGPDcurve *gpc);
+void BKE_gpencil_stroke_editcurve_sync_selection(struct bGPDstroke *gps, struct bGPDcurve *gpc);
+void BKE_gpencil_strokes_selected_update_editcurve(struct bGPdata *gpd);
+void BKE_gpencil_strokes_selected_sync_selection_editcurve(struct bGPdata *gpd);
+void BKE_gpencil_stroke_update_geometry_from_editcurve(struct bGPDstroke *gps,
+                                                       const uint resolution,
+                                                       const bool is_adaptive);
+void BKE_gpencil_editcurve_recalculate_handles(struct bGPDstroke *gps);
+void BKE_gpencil_editcurve_subdivide(struct bGPDstroke *gps, const int cuts);
+
 #ifdef __cplusplus
 }
 #endif