AnimatedSwiftLayers

// A test case that displays an animated weather layer on top of
//  the standard Geography Class basemap.
// This is part of the AutoTester in the WhirlyGlobe-Maply repo.
class AnimatedBasemapTestCase: MaplyTestCase {

  	// Use Geography Class as the base layer
	let geographyClass = GeographyClassTestCase()
	let cacheDir = NSSearchPathForDirectoriesInDomains(.CachesDirectory, .UserDomainMask, true)[0]
	var tileSources = [MaplyRemoteTileInfo]()

	override init() {
		super.init()

		self.name = "Animated basemap"
		self.captureDelay = 2
		self.implementations = [.Globe, .Map]
	}

	// Collect up the various precipitation sources
	func buildTileSources() {
		for i in 0...4 {
			let precipTileSource = MaplyRemoteTileInfo(
				baseURL: "http://a.tiles.mapbox.com/v3/mousebird.precip-example-layer\(i)/",
				ext: "png",
				minZoom: 0,
				maxZoom: 6)
			precipTileSource.cacheDir = "\(cacheDir)/forecast_io_weather_layer\(i)/"
			tileSources.append(precipTileSource)
		}
	}

  	// Create the animation layer
	func createLayer(baseView: MaplyBaseViewController) -> (MaplyQuadImageTilesLayer) {
		let precipTileSource = MaplyMultiplexTileSource(sources: tileSources)
		// Create a precipitation layer that animates
		let precipLayer = MaplyQuadImageTilesLayer(tileSource: precipTileSource!)
		precipLayer?.imageDepth = UInt32(tileSources.count)
		precipLayer?.animationPeriod = 1.0
		precipLayer?.imageFormat = MaplyQuadImageFormat.ImageUByteRed
		precipLayer?.numSimultaneousFetches = 4
		precipLayer?.handleEdges = false
		precipLayer?.coverPoles = false
		precipLayer?.shaderProgramName = WeatherShader.setupWeatherShader(baseView)
		precipLayer?.fade = 0.5
		return precipLayer!
	}
	
	// Globe test case
	override func setUpWithGlobe(globeVC: WhirlyGlobeViewController) {
		geographyClass.setUpWithGlobe(globeVC)
		buildTileSources()
		globeVC.addLayer(createLayer(globeVC))
	}

  	// Map test case
	override func setUpWithMap(mapVC: MaplyViewController) {
		geographyClass.setUpWithMap(mapVC)
		buildTileSources()
		mapVC.addLayer(createLayer(mapVC))
	}
}

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