Mesh Selection: Move Selection ID Context Utilities to ED_view3d.

This patch does not bring functional changes, but it is a good change if we want to use these utilities in areas other than those using BMesh (eg painting editors).

This is also a step to replace `ED_view3d_select_id_validate`. That function erroneously checks `V3D_INVALID_BACKBUF` which causes it to update unnecessarily.

Reviewers: campbellbarton

Differential Revision: https://developer.blender.org/D5072

1 files changed, 17 insertions, 0 deletions

diff --git a/source/blender/editors/include/ED_view3d.h b/source/blender/editors/include/ED_view3d.h
index 751f71cc53b..21a18a0b387 100644
--- a/source/blender/editors/include/ED_view3d.h
+++ b/source/blender/editors/include/ED_view3d.h
@@ -512,6 +512,23 @@ int view3d_opengl_select(struct ViewContext *vc,
                          eV3DSelectObjectFilter select_filter);
 
 /* view3d_select.c */
+struct EDSelectID_Context;
+struct EDSelectID_Context *ED_view3d_select_id_context_create(struct ViewContext *vc,
+                                                              struct Base **bases,
+                                                              const uint bases_len,
+                                                              short select_mode);
+
+void ED_view3d_select_id_context_destroy(struct EDSelectID_Context *sel_id_ctx);
+uint ED_view3d_select_id_context_offset_for_object_elem(
+    const struct EDSelectID_Context *sel_id_ctx, int base_index, char elem_type);
+
+uint ED_view3d_select_id_context_elem_len(const struct EDSelectID_Context *sel_id_ctx);
+bool ED_view3d_select_id_elem_get(struct EDSelectID_Context *sel_id_ctx,
+                                  const uint sel_id,
+                                  uint *r_elem,
+                                  uint *r_base_index,
+                                  char *r_elem_type);
+
 float ED_view3d_select_dist_px(void);
 void ED_view3d_viewcontext_init(struct bContext *C, struct ViewContext *vc);
 void ED_view3d_viewcontext_init_object(struct ViewContext *vc, struct Object *obact);