diff --git a/src/ol/epi/ol/location.js b/src/ol/epi/ol/location.js
new file mode 100644
index 0000000000..a6dc602c8d
--- /dev/null
+++ b/src/ol/epi/ol/location.js
@@ -0,0 +1,112 @@
+goog.provide('ol.Location');
+
+goog.require('ol.Projection');
+
+
+
+/**
+ * @constructor
+ * @param {number} x X.
+ * @param {number} y Y.
+ * @param {number} z Z.
+ * @param {ol.Projection|undefined} projection Projection.
+ */
+ol.Location = function(x, y, z, projection) {
+
+  /**
+   * @private
+   * @type {number}
+   */
+  this.x_ = x;
+
+  /**
+   * @private
+   * @type {number}
+   */
+  this.y_ = y;
+
+  /**
+   * @private
+   * @type {number}
+   */
+  this.z_ = z;
+
+  /**
+   * @private
+   * @type {ol.Projection|undefined}
+   */
+  this.projection_ = projection;
+
+};
+
+
+/**
+ * @return {ol.Projection|undefined} Projection.
+ */
+ol.Location.prototype.getProjection = function() {
+  return this.projection_;
+};
+
+
+/**
+ * @return {number} X.
+ */
+ol.Location.prototype.getX = function() {
+  return this.x_;
+};
+
+
+/**
+ * @return {number} Y.
+ */
+ol.Location.prototype.getY = function() {
+  return this.y_;
+};
+
+
+/**
+ * @return {number} Z.
+ */
+ol.Location.prototype.getZ = function() {
+  return this.z_;
+};
+
+
+/**
+ * @param {ol.Projection|undefined} projection Projection.
+ * @return {ol.Location} This.
+ */
+ol.Location.prototype.setProjection = function(projection) {
+  this.projection_ = projection;
+  return this;
+};
+
+
+/**
+ * @return {number} X.
+ */
+ol.Location.prototype.setX = function() {
+  this.x_ = x;
+  return this;
+};
+
+
+/**
+ * @return {number} Y.
+ */
+ol.Location.prototype.setY = function() {
+  this.y_ = y;
+  return this;
+};
+
+
+/**
+ * @return {number} Z.
+ */
+ol.Location.prototype.setZ = function() {
+  this.z_ = z;
+  return this;
+};
+
+
+
diff --git a/src/ol/epi/ol/map.js b/src/ol/epi/ol/map.js
new file mode 100644
index 0000000000..0f0c32c7d6
--- /dev/null
+++ b/src/ol/epi/ol/map.js
@@ -0,0 +1,85 @@
+goog.provide('ol.Map');
+
+goog.require('ol.Location');
+goog.require('ol.Projection');
+
+
+
+/**
+ * @constructor
+ */
+ol.Map = function() {
+
+  /**
+   * @private
+   * @type {ol.Projection}
+   */
+  this.projection_ = new ol.Projection();
+
+  /**
+   * @private
+   * @type {ol.Location}
+   */
+  this.location_ = new ol.Location(0, 0);
+
+  /**
+   * @private
+   * @type {number}
+   */
+  this.zoom_ = 0;
+
+};
+
+
+/**
+ * @return {ol.Location} Location.
+ */
+ol.Map.prototype.getCenter = function() {
+  return this.center_;
+};
+
+
+/**
+ * @return {ol.Projection} Projection.
+ */
+ol.Map.prototype.getProjection = function() {
+  return this.projection_;
+};
+
+
+/**
+ * @return {number} Zoom.
+ */
+ol.Map.prototype.getZoom = function() {
+  return this.zoom_;
+};
+
+
+/**
+ * @param {ol.Center} center Center.
+ * @return {ol.Map} This.
+ */
+ol.Map.prototype.setCenter = function(center) {
+  this.center_ = center;
+  return this;
+};
+
+
+/**
+ * @param {ol.Projection} projection Projection.
+ * @return {ol.Map} This.
+ */
+ol.Map.prototype.setProjection = function(projection) {
+  this.projection_ = projection;
+  return this;
+};
+
+
+/**
+ * @param {number} zoom Zoom.
+ * @return {ol.Map} This.
+ */
+ol.Map.prototype.setZoom = function(zoom) {
+  this.zoom_ = zoom;
+  return this;
+};
diff --git a/src/ol/epi/ol/projection.js b/src/ol/epi/ol/projection.js
new file mode 100644
index 0000000000..cb77844ae4
--- /dev/null
+++ b/src/ol/epi/ol/projection.js
@@ -0,0 +1,34 @@
+goog.provide('ol.Projection');
+
+
+
+/**
+ * @constructor
+ */
+ol.Projection = function() {
+
+  /**
+   * @private
+   * @type {string=}
+   */
+  this.code_ = undefined;
+
+};
+
+
+/**
+ * @return {string} Code.
+ */
+ol.Projection.prototype.getCode = function() {
+  return this.code_;
+};
+
+
+/**
+ * @param {string=} code Code.
+ * @return {ol.Projection} This.
+ */
+ol.Projection.prototype.setCode = function(code) {
+  this.code_ = code;
+  return this;
+};
diff --git a/src/ol/hpi/ol/loc.js b/src/ol/hpi/ol/loc.js
new file mode 100644
index 0000000000..e1a25db280
--- /dev/null
+++ b/src/ol/hpi/ol/loc.js
@@ -0,0 +1,114 @@
+goog.provide('ol.loc');
+
+goog.require('ol.Location');
+
+
+/**
+ * @typedef {ol.Location|Array.<number>|{{x:number, y:number, z:number=, projection: ol.Projection=}}} loc Location.
+ */
+ol.LocationLike;
+
+
+
+/**
+ * @export
+ * @param {ol.LocationLike} loc Location.
+ * @return {ol.Location} Location.
+ */
+ol.loc = function(loc) {
+
+  if (loc instanceof ol.Location) {
+    return loc;
+  }
+
+  var x = 0;
+  var y = 0;
+  var z;
+  var projection;
+
+  if (goog.isArray(loc)) {
+    if (loc.length >= 1) {
+      x = loc[0];
+      if (loc.length >= 2) {
+        y = loc[1];
+        if (loc.length >= 3) {
+          z = loc[2];
+        }
+      }
+    }
+  } else if (goog.isObject(loc)) {
+    if (goog.isDef(loc.x)) {
+      x = loc.x;
+    }
+    if (goog.isDef(loc.y)) {
+      y = loc.y;
+    }
+    if (goog.isDef(loc.z)) {
+      z = loc.z;
+    }
+    if (goog.isDef(loc.projection)) {
+      projection = loc.projection;
+    }
+  } else {
+    throw new Error('ol.loc');
+  }
+
+  return new ol.Location(x, y, z, projection);
+
+};
+
+
+/**
+ * @export
+ * @param {ol.Projection=} opt_arg Projection.
+ * @return {ol.Location|ol.Projection} Result.
+ */
+ol.Location.prototype.projection = function(opt_arg) {
+  if (arguments.length == 1) {
+    return this.setProjection(opt_arg);
+  } else {
+    return this.getProjection();
+  }
+};
+
+
+/**
+ * @export
+ * @param {number=} opt_arg X.
+ * @return {ol.Location|number} Result.
+ */
+ol.Location.prototype.x = function(opt_arg) {
+  if (arguments.length == 1) {
+    return this.setX(opt_arg);
+  } else {
+    return this.getX();
+  }
+};
+
+
+/**
+ * @export
+ * @param {number=} opt_arg Y.
+ * @return {ol.Location|number} Result.
+ */
+ol.Location.prototype.y = function(opt_arg) {
+  if (arguments.length == 1) {
+    return this.setY(opt_arg);
+  } else {
+    return this.getY();
+  }
+};
+
+
+/**
+ * @export
+ * @param {number=} opt_arg Z.
+ * @return {ol.Location|number} Result.
+ */
+ol.Location.prototype.z = function(opt_arg) {
+  if (arguments.length == 1) {
+    return this.setZ(opt_arg);
+  } else {
+    return this.getZ();
+  }
+};
diff --git a/src/ol/hpi/ol/map.js b/src/ol/hpi/ol/map.js
new file mode 100644
index 0000000000..16daa72a82
--- /dev/null
+++ b/src/ol/hpi/ol/map.js
@@ -0,0 +1,45 @@
+goog.provide('ol.map');
+
+goog.require('ol.Location');
+goog.require('ol.Map');
+goog.require('ol.Projection');
+
+
+/**
+ * @typedef {ol.Map|Object|string}
+ */
+ol.MapLike;
+
+
+/**
+ * @param {ol.MapLike=} opt_arg Argument.
+ * @return {ol.Map} Map.
+ */
+ol.map = function(opt_arg) {
+
+  /** @type {ol.Location|undefined} */
+  var center;
+  var target;
+
+  if (arguments.length == 1) {
+    if (opt_arg instanceof ol.Map) {
+      return opt_arg;
+    } else if (goog.isObject(opt_arg)) {
+      config = opt_arg;
+      if (goog.isDef(config.center)) {
+        center = ol.loc(config.center);
+      }
+      if (goog.isDef(config.target)) {
+        target = config.target;
+      }
+    } else {
+      throw new Error('ol.map');
+    }
+  }
+
+  var map = new ol.Map();
+
+  if (goog.object.) {
+  }
+
+};
diff --git a/src/ol/hpi/ol/projection.js b/src/ol/hpi/ol/projection.js
new file mode 100644
index 0000000000..2efaf32fe1
--- /dev/null
+++ b/src/ol/hpi/ol/projection.js
@@ -0,0 +1,43 @@
+goog.provide('ol.projection');
+
+goog.require('ol.Projection');
+
+
+/**
+ * @typedef {ol.Projection|string}
+ */
+ol.ProjectionLike;
+
+
+/**
+ * @export
+ * @param {ol.ProjectionLike=} opt_arg Argument.
+ * @return {ol.Projection} Projection.
+ */
+ol.projection = function(opt_arg) {
+  var code;
+  if (arguments.length == 1) {
+    if (opt_arg instanceof ol.Projection) {
+      return opt_arg;
+    } else if (goog.isString(arguments[0])) {
+      code = arguments[0];
+    } else {
+      throw new Error('ol.projection');
+    }
+  }
+  return new ol.Projection(code);
+};
+
+
+/**
+ * @export
+ * @param {string=} opt_code Code.
+ * @return {ol.Projection|string} Result.
+ */
+ol.Projection.prototype.code = function(opt_code) {
+  if (goog.isDef(opt_code)) {
+    return this.setCode(opt_code);
+  } else {
+    return this.getCode();
+  }
+};