Step 3/3, merging subdivision/bone creation methods using iterators

This also adds a special Embedding option called "Peel Objects". This option makes the embedding snap consider objects as whole, taking the first and last hit of each of them to calculate the embedding point (instead of peeling with first/second, third/fourth and so on). This option is useful if you have mecanical pieces with lots of details (as single objects) and want to put bones in the middle (think of adding bones to a mecha, for example).

1 files changed, 13 insertions, 1 deletions

diff --git a/source/blender/blenlib/BLI_graph.h b/source/blender/blenlib/BLI_graph.h
index 7629dbf6ba8..f4fccfcbb2c 100644
--- a/source/blender/blenlib/BLI_graph.h
+++ b/source/blender/blenlib/BLI_graph.h
@@ -62,13 +62,25 @@ typedef struct BArc {
 
 struct BArcIterator;
 
+void* IT_head(void* iter);
+void* IT_tail(void* iter);
+void* IT_peek(void* iter, int n);
+void* IT_next(void* iter);
+void* IT_nextN(void* iter, int n);
+void* IT_previous(void* iter);
+int   IT_stopped(void* iter);
+
+typedef void* (*HeadFct)(void* iter);
+typedef void* (*TailFct)(void* iter);
 typedef void* (*PeekFct)(void* iter, int n);
 typedef void* (*NextFct)(void* iter);
 typedef void* (*NextNFct)(void* iter, int n);
 typedef void* (*PreviousFct)(void* iter);
-typedef int	(*StoppedFct)(void* iter);
+typedef int   (*StoppedFct)(void* iter);
 
 typedef struct BArcIterator {
+	HeadFct		head;
+	TailFct		tail;
 	PeekFct		peek;
 	NextFct		next;
 	NextNFct	nextN;