theallelectricsmartgrid

Scene Manager

The SceneManager (private/src/SceneManager.hpp) is the central coordinator for scene selection, scene blending, and scene-change signaling.

Role

SceneManager is the source of truth for:

• active left scene (m_scene1)
• active right scene (m_scene2)
• global blend factor (m_blendFactor)
• shift state (m_shift)

It allows the rest of the parameter system to read a single blended value from scene-stored arrays:

• GetSceneValue(values) computes
  • values[m_scene1] * (1 - m_blendFactor) + values[m_scene2] * m_blendFactor

Change detection

Each frame, SceneManager::Process() compares current scene/blend state to previous values and emits flags:

• m_changed when blend or scene assignment changed
• m_changedScene when scene indices changed

Consumers (notably encoder-bank processing) use these flags to refresh topology/state only when needed.

Cell registration

SceneManager can track registered stateful cells (StateEncoderCell) through RegisterCell(...).

• Registration is enabled when external-state mode is active (m_externalState).
• This provides a central place for scene-aware state propagation.

Related

• State Saver
• Encoder System
• Smart Grid Integration

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