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swift-arcgis-runtime-experiments

Experiments in Swift with the ArcGIS Runtime SDK for iOS

A few components and experiments in Swift and Xcode 6 to work with the ArcGIS Runtime SDK for iOS.

##AGSGeometry ####Custom Operators Defining some operators (which make use of Generics) to handle common AGSGeometry operations.

Underlying the operators is the AGSGeometryEngine. Where previously you would have to write something like

AGSPolygon *projectedGeom = [[AGSGeometryEngine defaultGeometryEngine] projectGeometry:geom toSpatialReference:self.mapView.spatialReference]

you can now write

let projectedGeom = geom >> mapView.spatialReference

The following Swift infix operators are ovelrloaded. Note that in all cases except >> the types of geometry must match:

Operator Geometry Operation Example Notes
>> Reproject let projected = geom >> mapView.spatialReference
+, |, || Union let unionPoly = polygon1 + polygon2
&, && Intersection let intersectPoly = polygon1 & polygon2
- Difference let diffPoly = polygon1 - polygon2 Order is significant
^ Symmetric Difference let symmetricDiffPoly = polygon1 ^ polygon2

Notes:

  1. The Difference operator - could technically accept different kinds of geometry, but that's not being considered for now.
  2. In the above examples, polygons are shown, but the operators support AGSPoint, AGSMultipoint, AGSPolyline and AGSPolygon.

##User Interface ####AGSGeometryView Making use of @IBDesignable and @IBInspectable along with prepareForInterfaceBuilder(), provide a design-time interactive Geometry Viewer. The AGSGeometryView class can display a Polyline or Polygon scaled to the underlying view. Use this in Collection Views or Table Views, or as in the screenshot below (taken from Xcode6 beta 2), overlaid directly on the map or another control.

####AGSDesignableMapView Making use again of @IBDesignable and prepareForInterfaceBuilder(), use a hard-coded PNG image of the Topographic Basemap to represent a MapView in Interface Builder at design time. This is also visible in the above screenshot.