World Tour (Van Wijk Smooth Zoom + Globe Rotation)

This project renders an orthographic globe (Canvas/SVG) with interactive labels and a programmatic "World Tour" camera.

The tour steps through data points with:

• Smooth globe rotation (shortest-path interpolation)
• Smooth zooming/panning (Van Wijk / Nuij technique via d3.interpolateZoom)
• Pause/Resume on user interaction (drag to rotate, scroll to zoom)

Controls

• Space: Play/Pause tour
• Right Arrow: Next stop
• Left Arrow: Previous stop
• Esc: Stop tour (return to manual control)
• Drag: Rotate globe (pauses tour)
• Scroll/Pinch: Zoom globe (pauses tour)

Configuration

Edit config.js to tune tour physics:

• tourDataSource: 'studios' or 'cities'
• tourStepDurationMs: Flight time between stops
• tourHoldDurationMs: Hover time at destination
• tourZoomedFovRadiusPx: Controls how "close" the zoom gets (smaller = closer)