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--- en:concept:start [2024/02/20 16:34] – created yussuna
+++ en:concept:start [2025/02/21 19:47] (current) – [Bones and Blendshapes] What each bone value means yussuna
@@ Line 1: / Line 1: @@
 ====== Basic Concepts ======
+For more detailed informations check [[en:software:creator:start|Inochi Creator]] and [[en:software:session:start|Inochi Session]].
 ===== General vtubing =====
+On vtubing, content creator uses model as avatar to present themselves.
+Model can be 2D or 3D. On 2D models, there are static models (.png) and moving 2D models (react png, realtime facetracking).
 ===== Motion tracking =====
+Motion tracking is method to capture human motion. It can use webcam and specific hardware for to do so.
+On vtubing, there are face tracker, hand tracker and full body tracker.
+===== Toggles =====
+Toggles uses shortcut-like mechanism to trigger an expression on model or to play pre-made animation
 ===== Puppet =====
 ==== Node Tree ====
-==== Node ====
-==== Mask ====
-==== Composite ====
-==== Simple Physics ====
-==== MeshGroup ====
-===== Mechanism =====
+=== - Node Types ===
-==== Transform ====
+  * [[simple-node|Simple Node]]
-==== Camera ====
+  * [[drawable|Drawable]]
-==== Mesh ====
+  * [[part|Parts]]
-==== Texture ====
+  * [[mask|Mask]]
-==== Parameter ====
+  * [[composite|Composite]]
-==== Interpolation ====
+  * [[meshgroup|MeshGroup]]
+  * [[simple-physics|Simple Physics]]
+  * [[camera|Camera]]
+=== - Node Properties ===
+  * [[transform-sorting|Transforms & Sorting]]
+  * [[texture-b-m|Texture, Blending & Masks]]
+  * [[mesh|Mesh]]
+  * [[physics|Physics]]
+==== Parameters ====
+  * [[axe-points|Axes & Axes Points]]
+  * [[interpolation|Interpolation]]
+  * [[physics-param|Physics Parameters]]
+==== Animations ====
+  * [[timeline|Timeline]]
+  * [[keyframe|Keyframe]]
+===== Shortcuts =====
+Shortcut and hotkeys on Inochi2D's software.
+  * [[shortcut|List of Shortcut and hotkeys]]
+===== Bones and Blendshapes =====
+The terms of "**Bones**" and "**BlendShapes**" are an abstractions that comes from the digital animation world. **Bones** are the elements used to define the orientation of 2D/3D models parts. A **bone** has a position (X, Y, Z) and an orientation (Yaw, Pitch, Roll). On the other hand, **[[https://en.wikipedia.org/wiki/Morph_target_animation|blendshapes]]** are used to express mesh deformations, usually through the use of key frames and interpolation.
+In the context of camera tracking, tracking software usually creates an internal 3D model that is deformed to match the shape of the body seen by the camera. Then both **bone** and **blendshape** information is extracted from this internal 3D model to be sent as data. For example, a parameter that most camera tracking software abstracts as a **bone** is the **Head**, which has both a **position** and **orientation**. More advanced tracking solutions can also send **hand** and **finger** data as **bones**. In the case of **blendshapes**, the parameters carry numeric information on how much a specific part of the tracked model has deformed.
+In short, Blendshapes are a way to represent facial expression data. You can use them to input those expression to your vtuber model.
+\\ \\
+Example:
+  * [[pitch-roll-yaw|Head bone data]]
+  * Bone ( [A, B, C], [D, E, F, G] )
+    * **A:** X (Left-Right)
+    * **B:** Y (Up-Down)
+    * **C:** Z (Front-Back)
+    * **D:** Rx
+    * **E:** Ry
+    * **F:** Rz
+    * **G:** Rw

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