Add shared vector rendering functions

src/ol/renderer/vector.js

@@ -0,0 +1,82 @@
+goog.provide('ol.renderer.vector');
+
+goog.require('goog.asserts');
+goog.require('ol.geom.LineString');
+goog.require('ol.geom.Point');
+goog.require('ol.geom.Polygon');
+goog.require('ol.replay.IBatchGroup');
+goog.require('ol.style.Style');
+
+
+/**
+ * @param {ol.replay.IBatchGroup} batchGroup Batch group.
+ * @param {ol.Feature} feature Feature.
+ * @param {ol.style.Style} style Style.
+ */
+ol.renderer.vector.renderFeature = function(batchGroup, feature, style) {
+  var geometry = feature.getGeometry();
+  var geometryRenderer =
+      ol.renderer.vector.GEOMETRY_RENDERERS_[geometry.getType()];
+  goog.asserts.assert(goog.isDef(geometryRenderer));
+  geometryRenderer(batchGroup, geometry, style);
+};
+
+
+/**
+ * @param {ol.replay.IBatchGroup} batchGroup Batch group.
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @param {ol.style.Style} style Style.
+ * @private
+ */
+ol.renderer.vector.renderLineStringGeometry_ =
+    function(batchGroup, geometry, style) {
+  goog.asserts.assert(geometry instanceof ol.geom.LineString);
+  var lineStringGeometry = /** @type {ol.geom.LineString} */ (geometry);
+  window.console.log({batchingLineString: lineStringGeometry}); // FIXME
+  var batch = batchGroup.getBatch(
+      style.zIndex, ol.replay.BatchType.STROKE_LINE);
+  batch.setStrokeStyle(style.stroke);
+  batch.drawLineStringGeometry(lineStringGeometry);
+};
+
+
+/**
+ * @param {ol.replay.IBatchGroup} batchGroup Batch group.
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @param {ol.style.Style} style Style.
+ * @private
+ */
+ol.renderer.vector.renderPointGeometry_ =
+    function(batchGroup, geometry, style) {
+  goog.asserts.assert(geometry instanceof ol.geom.Point);
+  var pointGeometry = /** @type {ol.geom.Point} */ (geometry);
+  window.console.log({batchingPoint: pointGeometry}); // FIXME
+};
+
+
+/**
+ * @param {ol.replay.IBatchGroup} batchGroup Batch group.
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @param {ol.style.Style} style Style.
+ * @private
+ */
+ol.renderer.vector.renderPolygonGeometry_ =
+    function(batchGroup, geometry, style) {
+  goog.asserts.assert(geometry instanceof ol.geom.Polygon);
+  var polygonGeometry = /** @type {ol.geom.Polygon} */ (geometry);
+  window.console.log({batchingPolygon: polygonGeometry}); // FIXME
+};
+
+
+/**
+ * @const
+ * @private
+ * @type {Object.<ol.geom.GeometryType,
+ *                function(
+ *                    ol.replay.IBatchGroup, ol.geom.Geometry, ol.style.Style)>}
+ */
+ol.renderer.vector.GEOMETRY_RENDERERS_ = {
+  'Point': ol.renderer.vector.renderPointGeometry_,
+  'LineString': ol.renderer.vector.renderLineStringGeometry_,
+  'Polygon': ol.renderer.vector.renderPolygonGeometry_
+};