If you select the landmark finder tool from the top section, World Wind will exhibit small tags for all locations it considers of significance. Landmarks are particularly well catalogued. Find a destination by typing its name in the search tool located on the top bar. Renderable layers hold any kind of shape.A digital globe wouldn't be complete without its own search option. You must also add the renderable layer to the WorldWindow’s layer list: wwd.addLayer(placemarkLayer) Here the layer is given the display name “Placemarks”. Var placemark = new WorldWind.Placemark(new WorldWind.Position(latitude, longitude, altitude)) To display a shape, you simply create it using its constructor and add it to a renderable layer: var placemarkLayer = new WorldWind.RenderableLayer("Placemarks") Apps typically use renderable layers to group shapes logically. You use the RenderableLayer class when you want to display shapes. The imagery need not span the entire globe. You can create your own image layers using TiledImageLayer. This layer is used similarly to a splash screen in order to quickly display imagery on the globe while other higher-resolution imagery is retrieved.
#Nasa world wind download full#
Blue Marble Single Image Layer (class BMNGOneImageLayer) - Full global coverage using one low-resolution Blue Marble image.Blue Marble + Landsat Layer (class BMNGLandsatLayer) - Full global coverage using colorized Blue Marble imagery for the oceans and medium-resolution Landsat imagery for land.Blue Marble Layer (class BMNGLayer) - Full global coverage using low-resolution Blue Marble imagery.Bing Roads Layer (class BingRoadsLayer) - Full global coverage using high-resolution Bing roads imagery.Bing Aerial with Labels Layer (class BingAerialWithLabelsLayer) - Full global coverage using the same imagery as Bing Aerial Layer but with placenames and roads included.Bing Aerial Layer (class BingAerialLayer) - Full global coverage using high-resolution Bing satellite imagery.Web WorldWind provides the following image layers: This is typically global-coverage imagery but need not be. Image layers hold imagery that is drawn on the surface of the globe. The layer type you’re likely to use most is RenderableLayer, which you use to hold shapes. See the API doc for the particular layer to discover those properties. Each defines additional properties that you can use to control the layer’s behavior. See the API doc for Layer for more details. A layer may not be drawn for several reasons, such as the eye altitude has not reached the max active altitude. inCurrentFrame - A read-only boolean indicating whether the layer was actually drawn during the most recent redraw.The layer is not displayed if the eye altitude is above this value. maxActiveAltitude - A number specifying the eye altitude below which the layer is displayed.The layer is not displayed if the eye altitude is below this value minActiveAltitude - A number specifying the eye altitude above which the layer is displayed.opacity - A number between 0 and 1 that enables you to make an layer and its contents semi-transparent.pickEnabled - A boolean indicating that the layer and its contents do not participate in picking.enabled - A boolean that enables you to turn the layer off while leaving it in the layer list.displayName - A string that you can use to give the layer a name that would be displayed, for example, in a layer manager.Wwd.addLayer(new WorldWind.ViewControlsLayer(wwd)) Wwd.addLayer(new WorldWind.CompassLayer()) Create and add a compass and view controls. Create and add layers for shapes, but don't add any shapes yet. Wwd.addLayer(new WorldWind.BingAerialWithLabelsLayer(null)) Var wwd = new WorldWind.WorldWindow("canvasOne") The above layer list is defined and the layers added to the WorldWindow by the following code: // Create the WorldWindow. (3D shapes within layers, however, are displayed in far-to-near order, as described in the Shapes section.) The adjacent illustration depicts six layers. During rendering, layers are displayed in the order they’re defined in the layer list. Each layer contains either imagery, shapes or decorations such as a compass. Each WorldWindow holds one layer list that contains all the layers to display in that WorldWindow. LayerListLayers hold all the information displayed by the WorldWindow.
0 kommentar(er)
