add mball_foreachScreenElem() and use for lasso & circle selection, also utility metaball functions to (de)select all.

1 files changed, 29 insertions, 0 deletions

diff --git a/source/blender/blenkernel/intern/mball.c b/source/blender/blenkernel/intern/mball.c
index 2030ab0f552..de7fdece7dd 100644
--- a/source/blender/blenkernel/intern/mball.c
+++ b/source/blender/blenkernel/intern/mball.c
@@ -2396,3 +2396,32 @@ void BKE_mball_translate(MetaBall *mb, float offset[3])
 		add_v3_v3(&ml->x, offset);
 	}
 }
+
+/* *** select funcs *** */
+void BKE_mball_select_all(struct MetaBall *mb)
+{
+	MetaElem *ml;
+
+	for (ml = mb->editelems->first; ml; ml = ml->next) {
+		ml->flag |= SELECT;
+	}
+}
+
+void BKE_mball_deselect_all(MetaBall *mb)
+{
+	MetaElem *ml;
+
+	for (ml = mb->editelems->first; ml; ml = ml->next) {
+		ml->flag &= ~SELECT;
+	}
+}
+
+void BKE_mball_select_swap(struct MetaBall *mb)
+{
+	MetaElem *ml;
+
+	for (ml = mb->editelems->first; ml; ml = ml->next) {
+		ml->flag ^= SELECT;
+	}
+}
+