mirror of
https://github.com/bdunderscore/modular-avatar.git
synced 2024-12-29 18:55:06 +08:00
34 lines
1.7 KiB
Markdown
34 lines
1.7 KiB
Markdown
|
# Semantics
|
||
|
|
|
||
|
|
Shape Changer will set the specified shape keys when the GameObject it is on is active and enabled.
|
||
|
|
This analysis is based on the original hierarchy position of the GameObject in question, not the position after any
|
||
|
|
Merge Armature or Bone Proxy operations.
|
||
|
|
|
||
|
|
## Shape Key Modes
|
||
|
|
|
||
|
|
Shape keys can be set to either
|
||
|
|
|
||
|
|
* Set - Set the shape key to the given value
|
||
|
|
* Delete - If the GameObject is always active, deletes the associated triangles and vertices. Otherwise, sets the shape
|
||
|
|
key to 100%.
|
||
|
|
|
||
|
|
## Conflict resolution
|
||
|
|
|
||
|
|
First, if any Delete action is active, we will delete the affected vertices (if static) or set to 100 (if dynamic).
|
||
|
|
Otherwise, the last object in hierarchy traversal order wins.
|
||
|
|
|
||
|
|
Implementation-wise, we first determine if the result is static (ie, if the last object - or multiple objects with
|
||
|
|
consistent settings - is non-animated). If so, we take that result.
|
||
|
|
|
||
|
|
Otherwise, we:
|
||
|
|
|
||
|
|
* Create animator parameters to proxy game object active states. These are injected into any animation clips which
|
||
|
|
manipulate relevant game objects.
|
||
|
|
* Build a blend tree to determine the final state.
|
||
|
|
* For delete actions, we create a blend tree which effectively adds together all the active objects.
|
||
|
|
* For set actions, we create a blend tree which selects the last active object.
|
||
|
|
* This blend tree works by exploiting the FP32 exponent field. Each object is assigned a floating point value with a
|
||
|
|
unique exponent and a zero mantissa; we skip every other exponent here, in order to provide a "guard band" between
|
||
|
|
values. We then sum these using a direct blend tree.
|
||
|
|
* We finally use a two-level 1D blend tree to evaluate the delete action and then any set actions.
|