bmmesh api - use struct rather than int[4] to initialize mesh sizes.

also correct bad assert() in previous commit.

1 files changed, 46 insertions, 0 deletions

diff --git a/source/blender/bmesh/bmesh_class.h b/source/blender/bmesh/bmesh_class.h
index f071e00211c..1c7717ac5f0 100644
--- a/source/blender/bmesh/bmesh_class.h
+++ b/source/blender/bmesh/bmesh_class.h
@@ -47,6 +47,19 @@ struct Object;
  *
  * hrm. it doesnt but stull works ok, remove the comment above? - campbell.
  */
+
+/**
+ * BMHeader
+ *
+ * All mesh elements begin with a BMHeader. This structure
+ * hold several types of data
+ *
+ * 1: The type of the element (vert, edge, loop or face)
+ * 2: Persistant "header" flags/markings (smooth, seam, select, hidden, ect)
+ *     note that this is different from the "tool" flags.
+ * 3: Unique ID in the bmesh.
+ * 4: some elements for internal record keeping.
+ */
 typedef struct BMHeader {
 	void *data; /* customdata layers */
 	int index; /* notes:
@@ -188,4 +201,37 @@ typedef struct BMesh {
 	int opflag; /* current operator flag */
 } BMesh;
 
+/* BMHeader->htype (char) */
+enum {
+	BM_VERT = 1,
+	BM_EDGE = 2,
+	BM_LOOP = 4,
+	BM_FACE = 8
+};
+
+#define BM_ALL (BM_VERT | BM_EDGE | BM_LOOP | BM_FACE)
+
+/* BMHeader->hflag (char) */
+enum {
+	BM_ELEM_SELECT  = (1 << 0),
+	BM_ELEM_HIDDEN  = (1 << 1),
+	BM_ELEM_SEAM    = (1 << 2),
+	BM_ELEM_SMOOTH  = (1 << 3), /* used for faces and edges, note from the user POV,
+                                  * this is a sharp edge when disabled */
+
+	BM_ELEM_TAG     = (1 << 4), /* internal flag, used for ensuring correct normals
+                                 * during multires interpolation, and any other time
+                                 * when temp tagging is handy.
+                                 * always assume dirty & clear before use. */
+
+	/* we have 2 spare flags which is awesome but since we're limited to 8
+	 * only add new flags with care! - campbell */
+	/* BM_ELEM_SPARE  = (1 << 5), */
+	/* BM_ELEM_SPARE  = (1 << 6), */
+
+	BM_ELEM_INTERNAL_TAG = (1 << 7) /* for low level internal API tagging,
+                                     * since tools may want to tag verts and
+                                     * not have functions clobber them */
+};
+
 #endif /* __BMESH_CLASS_H__ */