Simplify vector tile projection handling

src/ol/VectorTile.js

@@ -24,10 +24,10 @@ class VectorTile extends Tile {
     this.consumers = 0;
 
     /**
-     * @private
+     * Extent of this tile; set by the source.
      * @type {import("./extent.js").Extent}
      */
-    this.extent_ = null;
+    this.extent = null;
 
     /**
      * @private
@@ -48,11 +48,16 @@ class VectorTile extends Tile {
     this.loader_;
 
     /**
-     * Data projection
-     * @private
+     * Feature projection of this tile; set by the source.
      * @type {import("./proj/Projection.js").default}
      */
-    this.projection_ = null;
+    this.projection = null;
+
+    /**
+     * Resolution of this tile; set by the source.
+     * @type {number}
+     */
+    this.resolution;
 
     /**
      * @private
@@ -76,15 +81,6 @@ class VectorTile extends Tile {
     super.disposeInternal();
   }
 
-  /**
-   * Gets the extent of the vector tile.
-   * @return {import("./extent.js").Extent} The extent.
-   * @api
-   */
-  getExtent() {
-    return this.extent_;
-  }
-
   /**
    * Get the feature format assigned for reading this tile's features.
    * @return {import("./format/Feature.js").default} Feature format.
@@ -95,8 +91,7 @@ class VectorTile extends Tile {
   }
 
   /**
-   * Get the features for this tile. Geometries will be in the projection returned
-   * by {@link module:ol/VectorTile~VectorTile#getProjection}.
+   * Get the features for this tile. Geometries will be in the view projection.
    * @return {Array<import("./Feature.js").FeatureLike>} Features.
    * @api
    */
@@ -111,16 +106,6 @@ class VectorTile extends Tile {
     return this.url_;
   }
 
-  /**
-   * Get the feature projection of features returned by
-   * {@link module:ol/VectorTile~VectorTile#getFeatures}.
-   * @return {import("./proj/Projection.js").default} Feature projection.
-   * @api
-   */
-  getProjection() {
-    return this.projection_;
-  }
-
   /**
    * @inheritDoc
    */
@@ -128,7 +113,7 @@ class VectorTile extends Tile {
     if (this.state == TileState.IDLE) {
       this.setState(TileState.LOADING);
       this.tileLoadFunction_(this, this.url_);
-      this.loader_(null, NaN, null);
+      this.loader_(this.extent, this.resolution, this.projection);
     }
   }
 
@@ -136,11 +121,8 @@ class VectorTile extends Tile {
    * Handler for successful tile load.
    * @param {Array<import("./Feature.js").default>} features The loaded features.
    * @param {import("./proj/Projection.js").default} dataProjection Data projection.
-   * @param {import("./extent.js").Extent} extent Extent.
    */
-  onLoad(features, dataProjection, extent) {
-    this.setProjection(dataProjection);
-    this.setExtent(extent);
+  onLoad(features, dataProjection) {
     this.setFeatures(features);
   }
 
@@ -151,22 +133,6 @@ class VectorTile extends Tile {
     this.setState(TileState.ERROR);
   }
 
-  /**
-   * Function for use in an {@link module:ol/source/VectorTile~VectorTile}'s
-   * `tileLoadFunction`. Sets the extent of the vector tile. This is only required
-   * for tiles in projections with `tile-pixels` as units. The extent should be
-   * set to `[0, 0, tilePixelSize, tilePixelSize]`, where `tilePixelSize` is
-   * calculated by multiplying the tile size with the tile pixel ratio. For
-   * sources using {@link module:ol/format/MVT~MVT} as feature format, the
-   * {@link module:ol/format/MVT~MVT#getLastExtent} method will return the correct
-   * extent.
-   * @param {import("./extent.js").Extent} extent The extent.
-   * @api
-   */
-  setExtent(extent) {
-    this.extent_ = extent;
-  }
-
   /**
    * Function for use in an {@link module:ol/source/VectorTile~VectorTile}'s `tileLoadFunction`.
    * Sets the features for the tile.
@@ -178,17 +144,6 @@ class VectorTile extends Tile {
     this.setState(TileState.LOADED);
   }
 
-  /**
-   * Function for use in an {@link module:ol/source/VectorTile~VectorTile}'s `tileLoadFunction`.
-   * Sets the projection of the features that were added with
-   * {@link module:ol/VectorTile~VectorTile#setFeatures}.
-   * @param {import("./proj/Projection.js").default} projection Feature projection.
-   * @api
-   */
-  setProjection(projection) {
-    this.projection_ = projection;
-  }
-
   /**
    * Set the feature loader for reading this tile's features.
    * @param {import("./featureloader.js").FeatureLoader} loader Feature loader.