many improvements and reimplementations

2021-11-29 21:22:49 -08:00
parent 495b07fc55
commit 239a019690
21 changed files with 874 additions and 495 deletions
@@ -30,6 +30,7 @@ namespace olive {
 class NodeViewCommon {
 public:
  enum FlowDirection {
+    kInvalidDirection = -1,
    kTopToBottom,
    kBottomToTop,
    kLeftToRight,