Curves: save active point to file

Changed curve active point from pointer to index. Allows curve active point to be saved to file and retained between modes for free. Also some small optimisations by removing pointer look up code.

- Made active point access functions into BKE API calls.
- Fixes operators where curve de-selection resulted in unsel-active point.
- Split curve delete into 2 functions

1 files changed, 8 insertions, 1 deletions

diff --git a/source/blender/blenkernel/BKE_curve.h b/source/blender/blenkernel/BKE_curve.h
index 589ca68c798..afa053012da 100644
--- a/source/blender/blenkernel/BKE_curve.h
+++ b/source/blender/blenkernel/BKE_curve.h
@@ -86,7 +86,14 @@ void BKE_curve_translate(struct Curve *cu, float offset[3], int do_keys);
 void BKE_curve_material_index_remove(struct Curve *cu, int index);
 void BKE_curve_material_index_clear(struct Curve *cu);
 
-ListBase *BKE_curve_nurbs_get(struct Curve *cu);
+ListBase    *BKE_curve_nurbs_get(struct Curve *cu);
+
+void         BKE_curve_nurb_active_set(struct Curve *cu, struct Nurb *nu);
+struct Nurb *BKE_curve_nurb_active_get(struct Curve *cu);
+void        *BKE_curve_vert_active_get(struct Curve *cu);
+void         BKE_curve_nurb_vert_active_set(struct Curve *cu, struct Nurb *nu,    void *vert);
+bool         BKE_curve_nurb_vert_active_get(struct Curve *cu, struct Nurb **r_nu, void **r_vert);
+void         BKE_curve_nurb_vert_active_validate(struct Curve *cu);
 
 float (*BKE_curve_nurbs_vertexCos_get(struct ListBase *lb, int *numVerts_r))[3];
 void BK_curve_nurbs_vertexCos_apply(struct ListBase *lb, float (*vertexCos)[3]);