Controls are UI elements that enhance map interaction. 3DMapFi provides several built-in controls and supports custom controls for advanced use cases.

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Built-in Controls

  • NavigationControl: Zoom and rotate the map.
  • FullscreenControl: Toggle fullscreen mode.
  • GeolocateControl: Show user’s current location.
  • ScaleControl: Display a scale bar.
  • AttributionControl: Show attribution information.

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Usage

// Add navigation control to the top-right
map.addControl(new map.NavigationControl(), 'top-right');

// Add fullscreen control to the bottom-left
map.addControl(new map.FullscreenControl(), 'bottom-left');

// Add geolocate control
map.addControl(new map.GeolocateControl({
  positionOptions: { enableHighAccuracy: true },
  trackUserLocation: true
}));

// Add scale control
map.addControl(new map.ScaleControl({ maxWidth: 100, unit: 'metric' }));

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Control Positions

Controls can be positioned at:
  • top-left
  • top-right
  • bottom-left
  • bottom-right

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Custom Controls

You can create custom controls by implementing onAdd and onRemove methods. Custom controls can include any HTML content and logic. 
class MyControl {
  onAdd(map) {
    this._container = document.createElement('div');
    this._container.className = 'my-control';
    this._container.innerHTML = '<button>Click me</button>';
    this._container.onclick = () => alert('Custom control clicked!');
    return this._container;
  }
  onRemove() {
    this._container.parentNode.removeChild(this._container);
  }
}
map.addControl(new MyControl(), 'top-left');

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Removing Controls

Remove a control by passing the control instance to removeControl. 
const nav = new map.NavigationControl();
map.addControl(nav);
map.removeControl(nav);

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Accessibility

  • Use semantic HTML and ARIA attributes in custom controls for accessibility.
  • Ensure controls are keyboard navigable.
See also: Map API