PilotGaea 2D O'view
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    類別 Layer

    Abstract base class; normally only used for creating subclasses and not instantiated in apps. A visual representation of raster or vector map data. Layers group together those properties that pertain to how the data is to be displayed, irrespective of the source of that data.

    Layers are usually added to a map with ol.Map#addLayer. Components like ol.interaction.Select use unmanaged layers internally. These unmanaged layers are associated with the map using ol.layer.Layer#setMap instead.

    A generic change event is fired when the state of the source changes.

    ol.render.Event

    Layer options.

    stable

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    索引

    方法

    unByKey getSource setMap setSource getExtent getMaxResolution getMinResolution getOpacity getVisible getZIndex setExtent setMaxResolution setMinResolution setOpacity setVisible setZIndex get getKeys getProperties set setProperties unset changed dispatchEvent getRevision on once un unByKey

    構造函數

    constructor

    方法

    • Removes an event listener using the key returned by on() or once().

      參數

      • key: Object | Object[]

        The key returned by on() or once() (or an array of keys).

      回傳 void

      stable

    • Get the layer source.

      回傳 Source

      The layer source (or null if not yet set).

      stable

    • Sets the layer to be rendered on top of other layers on a map. The map will not manage this layer in its layers collection, and the callback in ol.Map#forEachLayerAtPixel will receive null as layer. This is useful for temporary layers. To remove an unmanaged layer from the map, use #setMap(null).

      To add the layer to a map and have it managed by the map, use ol.Map#addLayer instead.

      參數

      回傳 void

    • Set the layer source.

      參數

      • source: Source

        The layer source.

      回傳 void

      stable

    • Return the extent of the layer or undefined if it will be visible regardless of extent.

      回傳 Extent

      The layer extent.

      stable

    • Return the maximum resolution of the layer.

      回傳 number

      The maximum resolution of the layer.

      stable

    • Return the minimum resolution of the layer.

      回傳 number

      The minimum resolution of the layer.

      stable

    • Return the opacity of the layer (between 0 and 1).

      回傳 number

      The opacity of the layer.

      stable

    • Return the visibility of the layer (true or false).

      回傳 boolean

      The visibility of the layer.

      stable

    • Return the Z-index of the layer, which is used to order layers before rendering. The default Z-index is 0.

      回傳 number

      The Z-index of the layer.

    • Set the extent at which the layer is visible. If undefined, the layer will be visible at all extents.

      參數

      • extent: Extent

        The extent of the layer.

      回傳 void

      stable

    • Set the maximum resolution at which the layer is visible.

      參數

      • maxResolution: number

        The maximum resolution of the layer.

      回傳 void

      stable

    • Set the minimum resolution at which the layer is visible.

      參數

      • minResolution: number

        The minimum resolution of the layer.

      回傳 void

      stable

    • Set the opacity of the layer, allowed values range from 0 to 1.

      參數

      • opacity: number

        The opacity of the layer.

      回傳 void

      stable

    • Set the visibility of the layer (true or false).

      參數

      • visible: boolean

        The visibility of the layer.

      回傳 void

      stable

    • Set Z-index of the layer, which is used to order layers before rendering. The default Z-index is 0.

      參數

      • zindex: number

        The z-index of the layer.

      回傳 void

    • Gets a value.

      參數

      • key: string

        Key name.

      回傳 any

      Value.

      stable

    • Get a list of object property names.

      回傳 string[]

      List of property names.

      stable

    • Get an object of all property names and values.

      回傳 { [k: string]: any }

      Object.

      stable

    • Sets a value.

      參數

      • key: string

        Key name.

      • value: any

        Value.

      • 可選opt_silent: boolean

        Update without triggering an event.

      回傳 void

      stable

    • Sets a collection of key-value pairs. Note that this changes any existing properties and adds new ones (it does not remove any existing properties).

      參數

      • values: { [k: string]: any }

        Values.

      • 可選opt_silent: boolean

        Update without triggering an event.

      回傳 void

      stable

    • Unsets a property.

      參數

      • key: string

        Key name.

      • 可選opt_silent: boolean

        Unset without triggering an event.

      回傳 void

      stable

    • Increases the revision counter and dispatches a 'change' event.

      回傳 void

    • 函數

      Dispatches an event and calls all listeners listening for events of this type. The event parameter can either be a string or an Object with a type property.

      參數

      回傳 void

    • Get the version number for this object. Each time the object is modified, its version number will be incremented.

      回傳 number

      Revision.

    • Listen for a certain type of event.

      參數

      • type: string | string[]

        The event type or array of event types.

      • listener: Function

        The listener function.

      • 可選opt_this: Object

        The object to use as this in listener.

      回傳 Object | Object[]

      Unique key for the listener. If called with an array of event types as the first argument, the return will be an array of keys.

      stable

    • Listen once for a certain type of event.

      參數

      • type: string | string[]

        The event type or array of event types.

      • listener: Function

        The listener function.

      • 可選opt_this: Object

        The object to use as this in listener.

      回傳 Object | Object[]

      Unique key for the listener. If called with an array of event types as the first argument, the return will be an array of keys.

      stable

    • Unlisten for a certain type of event.

      參數

      • type: string | string[]

        The event type or array of event types.

      • listener: Function

        The listener function.

      • 可選opt_this: Object

        The object which was used as this by the listener.

      回傳 void

      stable

    • 函數

      Removes an event listener using the key returned by on() or once(). Note that using the ol.Observable.unByKey static function is to be preferred.

      參數

      • key: Object | Object[]

        The key returned by on() or once() (or an array of keys).

      回傳 void

      stable

    構造函數

    • 參數

      回傳 Layer

      Abstract base class; normally only used for creating subclasses and not instantiated in apps. A visual representation of raster or vector map data. Layers group together those properties that pertain to how the data is to be displayed, irrespective of the source of that data.

      Layers are usually added to a map with ol.Map#addLayer. Components like ol.interaction.Select use unmanaged layers internally. These unmanaged layers are associated with the map using ol.layer.Layer#setMap instead.

      A generic change event is fired when the state of the source changes.

      ol.render.Event

      stable

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