feat(core): Add bearing/rotation support to GlobeView and GlobeController

[Copilot]

Background

GlobeController explicitly disabled rotation (dragRotate = false, touchRotate = false) and GlobeViewport lacked bearing support in its view matrix. This prevented Google Maps/Earth-like compass rotation on the globe.

Addresses the "Support rotation (bearing) in GlobeController" item in the GlobeView graduation tracker (visgl#9199).

Change List

GlobeViewport

• Add bearing option and instance property
• Update view matrix to apply bearing rotation around Y-axis

GlobeState

• Implement rotate(), rotateStart(), rotateEnd() for drag/touch rotation
• Implement rotateLeft(), rotateRight() for keyboard rotation
• Add shortestPathFrom() for smooth bearing transitions
• Normalize bearing in applyConstraints()

GlobeController

• Remove explicit dragRotate = false and touchRotate = false overrides
• Add bearing to transition interpolator

Usage

new Deck({
  views: new GlobeView(),
  initialViewState: {
    longitude: 0,
    latitude: 20,
    zoom: 0,
    bearing: 45  // compass rotation in degrees
  },
  controller: {
    dragRotate: true,   // drag with function key to rotate
    touchRotate: true   // two-finger rotate gesture
  }
});

Note: Pitch remains unsupported—camera always points toward Earth center.

Warning

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• googlechromelabs.github.io
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• https://storage.googleapis.com/chrome-for-testing-public/141.0.7390.122/linux64/chrome-headless-shell-linux64.zip
  • Triggering command: /usr/local/bin/node /usr/local/bin/node install.mjs (http block)
• https://storage.googleapis.com/chrome-for-testing-public/141.0.7390.122/linux64/chrome-linux64.zip
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If you need me to access, download, or install something from one of these locations, you can either:

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Original prompt

Look DILIGENTLY into DeckGL GlobeView and GlobeController as well as ALL the bug reports about them on deck.gl and luma.gl and lets do a comprehensive triage of WTFFFFFFF is up with it - especially on mobile. I want to have navigation like Google Maps or Earth on this map and I am willing to spend as much time with you as it takes to make it so

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[charlieforward9]

Status: Draft - Not Working Yet

Tested integrating this branch with New Heat but rotation gestures aren't triggering properly.

What was done:

• Built deck.gl with these changes
• Linked to New Heat via yarn link
• Updated instantiateLayers.ts to pass controller options (touchRotate: true, dragRotate: true, etc.)
• Verified the controller config is being passed correctly (confirmed via console logs)

What's not working:

• Two-finger twist gesture doesn't rotate the globe
• Right-click drag doesn't rotate either
• The rotation methods in GlobeController exist and the bearing is wired up in GlobeViewport, but the gestures aren't triggering the rotation state machine

Next steps needed:

• Debug the gesture event handling in deck.gl's Controller base class
• Check if _onPinch and _onPan are actually calling the rotate methods
• May need to trace through mjolnir.js event handling

Leaving as draft until I have more time to investigate the gesture handling layer.