Fix connect-vertices failing for concave ngons

Also add:
- generic callback for bmesh elements.
- ability to pass an existing array to a bmesh operator.

1 files changed, 55 insertions, 0 deletions

diff --git a/source/blender/bmesh/intern/bmesh_callback_generic.c b/source/blender/bmesh/intern/bmesh_callback_generic.c
new file mode 100644
index 00000000000..91fec392552
--- /dev/null
+++ b/source/blender/bmesh/intern/bmesh_callback_generic.c
@@ -0,0 +1,55 @@
+/*
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file blender/bmesh/intern/bmesh_callback_generic.c
+ *  \ingroup bmesh
+ *
+ * BM construction functions.
+ */
+
+#include "BLI_utildefines.h"
+
+#include "bmesh.h"
+
+#include "intern/bmesh_callback_generic.h"
+
+bool BM_elem_cb_check_hflag_ex(BMElem *ele, void *user_data)
+{
+	const unsigned int hflag_pair = GET_INT_FROM_POINTER(user_data);
+	const char hflag_p = (hflag_pair & 0xff);
+	const char hflag_n = (hflag_pair >> 8);
+
+	return ((BM_elem_flag_test(ele, hflag_p) != 0) &&
+	        (BM_elem_flag_test(ele, hflag_n) == 0));
+}
+
+bool BM_elem_cb_check_hflag_enabled(BMElem *ele, void *user_data)
+{
+	const char hflag = GET_INT_FROM_POINTER(user_data);
+
+	return (BM_elem_flag_test(ele, hflag) != 0);
+}
+
+bool BM_elem_cb_check_hflag_disabled(BMElem *ele, void *user_data)
+{
+	const char hflag = GET_INT_FROM_POINTER(user_data);
+
+	return (BM_elem_flag_test(ele, hflag) == 0);
+}