TGSceneUpdate


@interface TGSceneUpdate : NSObject

Represents a data structure to specify a YAML path and the corresponding value for a Tangram scene update.

Example to update an API key for a source defined like this in your stylesheet:

sources:
    osm:
        type: MVT
        url:  https://tile.mapzen.com/mapzen/vector/v1/all/{z}/{x}/{y}.mvt
        max_zoom: 16
        url_params:
            api_key: vector-tiles-tyHL4AY

view.queueSceneUpdates(sceneUpdates: [ TGSceneUpdate(path: "sources.osm.url_params", value: "{ api_key: \(YOUR_API_KEY) }") ])
view.applySceneUpdates()

  • Init a scene update for a specific YAML path in the stylesheet and a new value:

    Declaration

    Objective-C

    - (nonnull instancetype)initWithPath:(nonnull NSString *)path
                               value:(nonnull NSString *)value;

    Swift

    init(path: String, value: String)

    Parameters

    path

    the YAML path within the stylesheet
    value

    the new YAML value for the node selected by path

    Return Value

    an initialized scene update

  • The YAML path for which the update will occur in the stylesheet used in the map view

    Declaration

    Objective-C

    @property (readwrite, copy, nonatomic) NSString *_Nonnull path;

    Swift

    var path: String { get set }

  • The YAML value to set in the update

    Declaration

    Objective-C

    @property (readwrite, copy, nonatomic) NSString *_Nonnull value;

    Swift

    var value: String { get set }