Give each source file a unique name

2012-10-25 19:03:04 +02:00
parent af872e25c3
commit e5d39724c9
31 changed files with 0 additions and 0 deletions
@@ -0,0 +1,80 @@
+goog.provide('ol.interaction.DragRotateAndZoom');
+
+goog.require('goog.math.Vec2');
+goog.require('ol.MapBrowserEvent');
+goog.require('ol.interaction.ConditionType');
+goog.require('ol.interaction.Drag');
+
+
+
+/**
+ * @constructor
+ * @extends {ol.interaction.Drag}
+ * @param {ol.interaction.ConditionType} condition Condition.
+ */
+ol.interaction.DragRotateAndZoom = function(condition) {
+
+  goog.base(this);
+
+  /**
+   * @private
+   * @type {ol.interaction.ConditionType}
+   */
+  this.condition_ = condition;
+
+  /**
+   * @private
+   * @type {number}
+   */
+  this.startRatio_ = 0;
+
+  /**
+   * @private
+   * @type {number}
+   */
+  this.startRotation_ = 0;
+
+};
+goog.inherits(ol.interaction.DragRotateAndZoom, ol.interaction.Drag);
+
+
+/**
+ * @inheritDoc
+ */
+ol.interaction.DragRotateAndZoom.prototype.handleDrag =
+    function(mapBrowserEvent) {
+  var browserEvent = mapBrowserEvent.browserEvent;
+  var map = mapBrowserEvent.map;
+  var size = map.getSize();
+  var delta = new goog.math.Vec2(
+      browserEvent.offsetX - size.width / 2,
+      size.height / 2 - browserEvent.offsetY);
+  var theta = Math.atan2(delta.y, delta.x);
+  // FIXME this should use map.withFrozenRendering but an assertion fails :-(
+  map.rotate(this.startRotation_, -theta);
+  var resolution = this.startRatio_ * delta.magnitude();
+  map.zoomToResolution(resolution);
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.interaction.DragRotateAndZoom.prototype.handleDragStart =
+    function(mapBrowserEvent) {
+  var browserEvent = mapBrowserEvent.browserEvent;
+  var map = mapBrowserEvent.map;
+  if (map.canRotate() && this.condition_(browserEvent)) {
+    var resolution = map.getResolution();
+    var size = map.getSize();
+    var delta = new goog.math.Vec2(
+        browserEvent.offsetX - size.width / 2,
+        size.height / 2 - browserEvent.offsetY);
+    var theta = Math.atan2(delta.y, delta.x);
+    this.startRotation_ = (map.getRotation() || 0) + theta;
+    this.startRatio_ = resolution / delta.magnitude();
+    return true;
+  } else {
+    return false;
+  }
+};