From 9062e0aae9f2f576b7a237c28028aa6b09feee5e Mon Sep 17 00:00:00 2001
From: Fox Caminiti <fox@foxcam.net>
Date: Wed, 17 Aug 2022 23:41:08 -0400
Subject: undo and pen development

---
 main.h | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

(limited to 'main.h')

diff --git a/main.h b/main.h
index a31bc64..af45516 100644
--- a/main.h
+++ b/main.h
@@ -1,7 +1,11 @@
 enum instruction_mode {
     instruction_mode_scalar,
+#if ARM
+    instruction_mode_neon,
+#else
     instruction_mode_sse,
     instruction_mode_avx
+#endif
 };
 
 struct cache {
@@ -67,8 +71,6 @@ struct cached_bitmap {
     uint32 Frame;           // What frame it is.
 };
 
-// Some actions may require a higher-level function to undo to a satisfactory
-// standard, so actions are allowed to do more than just set/swap single values.
 enum action_entry_type {
     action_entry_layerinit,
     action_entry_default
@@ -207,6 +209,8 @@ union val {
 
 struct keyframe {
     val Value;
+    // NOTE(fox): Frame values are relative to the layer's FrameOffset! This is
+    // done to reduce the footprint of layer moving in the undo tree.
     int32 FrameNumber;
     keyframe_type Type;
     bool32 IsSelected;
@@ -291,17 +295,17 @@ struct source {
 struct layer_bitmap_info {
     // Image and video
     void *BitmapBuffer;       // Each layer has a persistent bitmap that the source data gets packed into.
+    int32 FrameOffset;        // The "true" position of the layer, separate from StartFrame. Starts at zero and only gets incremented when the layer is moved.
     bool32 ToUpdate = 1;
     gl_effect_layer Test;
 
     // TODO(fox): Find a better place to store this. Either give effects a more
     // fleshed-out API to add things to a struct like this or integrate into ImGui.
-    void *HistogramVals;        // 256*5 packed floats (all channel average + RGBA).
+    void *HistogramVals;        // 256*5 floats (all channel average + RGBA).
     uint16 LevelsSelector;      // Which channel is currently active
 
     // Video only
-    int32 FrameOffset;        // the "true" position of video layers, separate from StartFrame
-    int32 CurrentFrame = -1;  // The last frame number rendered to the bitmap.
+    int32 CurrentFrame = -1;  // The last frame number rendered to the bitmap. -1 gurantees a load upon layer creation.
     void *AVInfo;        // Internal data containing current frame info
 };
 
@@ -364,6 +368,7 @@ struct mask_point {
 
 struct mask {
     mask_point Point[16];
+    bool32 IsClosed;
     uint16 NumberOfPoints;
     uint16 NumberOfSelectedPoints;
     void *TriangulatedPointCache;
-- 
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