goodmap 0.4.0

Beautiful, theme-aware Flutter map components — a native MapLibre flat map and a 3D globe with points, labels and animated great-circle arcs. Inspired by mapcn.

goodmap

Cool, beautiful, ready-to-use map components for Flutter — inspired by mapcn. Two drop-in surfaces: a themed flat map built on native MapLibre, and a 3D globe with points, labels and animated great-circle arcs.

• Theme-aware — follows your app's light/dark Theme (CARTO basemaps).
• Ready to use — small, predictable, controller-based API.
• Native globe — a real spinning globe with no flutter_gpu, rendered in a single ui.FragmentProgram (works on iOS, Android, web, desktop).

Install

dependencies:
  goodmap: ^0.2.0

import 'package:goodmap/goodmap.dart';

The flat map uses maplibre_gl, which requires iOS 13+ and Android minSdkVersion 21.

Globe (GoodGlobe)

A minimalist, theme-aware globe with inertial drag-rotate, pinch-zoom, points + labels, and animated dashed arcs — back-of-globe overlays hide automatically.

GoodGlobe(
  initialCenter: const LatLng(-8.84, 13.23), // Luanda
  initialZoom: 1.0,
  atmosphere: false,
  points: const [
    GlobePoint(coordinate: LatLng(-8.84, 13.23), label: 'Luanda', color: Colors.white, radius: 6),
    GlobePoint(coordinate: LatLng(51.50, -0.13), label: 'London'),
  ],
  arcs: const [
    GlobeArc(from: LatLng(-8.84, 13.23), to: LatLng(51.50, -0.13)),
  ],
  onTap: (latLng) { /* tap → coordinate */ },
)

• GoodGlobe — points, arcs, atmosphere, onTap, onPointTap.
• GlobePoint — coordinate, label, color, radius.
• GlobeArc — from, to, color, width, dashed, bend, segments.

Globe that zooms into streets (GoodMapGlobe)

Use GoodMapGlobe instead of GoodGlobe for a globe that cross-fades to the native flat map (full vector streets/cities) once you pinch past a zoom threshold, and back out to the globe — same API plus points/arcs/atmosphere.

GoodMapGlobe(
  initialCenter: const LatLng(-8.84, 13.23),
  points: [...],
  arcs: [...],
)

Flat map (GoodMap)

A themed slippy map with overlay markers/popups, polylines and zoom/compass controls, driven by a GoodMapController.

GoodMap(
  initialCenter: const LatLng(37.77, -122.42),
  initialZoom: 11,
  controls: const GoodControls(zoom: true, compass: true),
  onMapReady: (c) {
    c.addMarker(MarkerOptions(
      position: const LatLng(37.77, -122.42),
      child: const Icon(Icons.location_on),
      onTap: () => c.showPopup(
        const LatLng(37.77, -122.42),
        const Card(child: Padding(padding: EdgeInsets.all(12), child: Text('SF'))),
      ),
    ));
  },
)

GoodMapController:

• Camera: flyTo, animateTo, fitBounds, moveTo
• Markers: addMarker, updateMarker, removeMarker, clearMarkers
• Popups: showPopup, hidePopup, clearPopups
• Polylines: addPolyline, removePolyline, clearPolylines
• Dotted Grid: enableDottedGrid, disableDottedGrid
• Heatmaps: addHeatmap, updateHeatmap, removeHeatmap, clearHeatmaps

Both surfaces follow Theme.of(context).brightness (CARTO positron / dark-matter).

Dotted World Map ("pointed map")

You can draw a stylized dotted landmass grid on both the 3D globe and the flat map:

// On the Globe or Hybrid surface (declarative):
GoodGlobe(
  initialCenter: const LatLng(0, 0),
  showDottedGrid: true,
  dottedGridColor: Colors.grey.withOpacity(0.3),
  dottedGridRadius: 1.2,
)

Heatmaps

Plot geographic density heatmaps on both surfaces:

// On the Globe surface (declarative):
GoodGlobe(
  initialCenter: const LatLng(0, 0),
  heatmaps: [
    HeatmapOptions(
      points: const [LatLng(37.77, -122.42), LatLng(37.80, -122.45)],
      weights: const [1.0, 0.5], // Optional relative weights (0.0 to 1.0)
      radius: 20.0,        // Radius of influence in pixels
    ),
  ],
)

// On the Flat Map (via controller):
final heatmapId = await controller.addHeatmap(
  HeatmapOptions(
    points: const [LatLng(37.77, -122.42), LatLng(37.80, -122.45)],
    weights: const [1.0, 0.5],
    radius: 30.0,
  ),
);
await controller.removeHeatmap(heatmapId);

Basemap terms

goodmap uses CARTO's public basemap tiles. Review CARTO's and OpenStreetMap's terms before production use, and supply your own style/tiles if required.

License

MIT