From d3b616b9487fd84617322abc705ba7e200d0a784 Mon Sep 17 00:00:00 2001
From: Paul Weidner <paul.weidner@gmail.com>
Date: Sun, 26 Feb 2023 22:27:25 -0800
Subject: [PATCH 1/2] Include transform and transformExtent methods #171

---
 CHANGELOG.md                       | 4 ++++
 src/instance/instance.js           | 3 +++
 src/instance/methods/projection.js | 2 ++
 3 files changed, 9 insertions(+)
 create mode 100644 src/instance/methods/projection.js

diff --git a/CHANGELOG.md b/CHANGELOG.md
index db5689f..5aa9ce7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+
+- Include transform and transformExtent OL methods. #171
+
 ## [v2.1.0] - 2022-11-15
 
 ### Added
diff --git a/src/instance/instance.js b/src/instance/instance.js
index 11c90b1..eda45bd 100644
--- a/src/instance/instance.js
+++ b/src/instance/instance.js
@@ -8,6 +8,7 @@ import defaults from './defaults';
 // Import instance methods.
 import addLayer, { getLayerByName } from './methods/layer';
 import addPopup from './methods/popup';
+import { transform, transformExtent } from './methods/projection';
 import { zoomToVectors, zoomToLayer } from './methods/zoom';
 import { addBehavior, attachBehavior, attachBehaviorsByWeight } from './methods/behavior';
 import { measureGeometry } from '../utils/measure';
@@ -57,6 +58,8 @@ const createInstance = ({ target, options = {} }) => {
     attachBehavior,
     attachBehaviorsByWeight,
     measureGeometry,
+    transform,
+    transformExtent,
   };
 
   return instance;
diff --git a/src/instance/methods/projection.js b/src/instance/methods/projection.js
new file mode 100644
index 0000000..27d8993
--- /dev/null
+++ b/src/instance/methods/projection.js
@@ -0,0 +1,2 @@
+// Export OpenLayers transform functions
+export { transform, transformExtent } from 'ol/proj';
\ No newline at end of file

From c68a0c4a50cf7b191492ef2a4c50c1c8ea86d016 Mon Sep 17 00:00:00 2001
From: Paul Weidner <paul.weidner@gmail.com>
Date: Sun, 26 Feb 2023 22:56:29 -0800
Subject: [PATCH 2/2] Add getCurrentViewExtentCoordinates instance function
 #171

---
 CHANGELOG.md                       |  1 +
 src/instance/instance.js           |  3 ++-
 src/instance/methods/projection.js | 17 ++++++++++++++++-
 3 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5aa9ce7..e933d76 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 
 - Include transform and transformExtent OL methods. #171
+- Add getCurrentViewExtentCoordinates instance function. #171
 
 ## [v2.1.0] - 2022-11-15
 
diff --git a/src/instance/instance.js b/src/instance/instance.js
index eda45bd..418585e 100644
--- a/src/instance/instance.js
+++ b/src/instance/instance.js
@@ -8,7 +8,7 @@ import defaults from './defaults';
 // Import instance methods.
 import addLayer, { getLayerByName } from './methods/layer';
 import addPopup from './methods/popup';
-import { transform, transformExtent } from './methods/projection';
+import { getCurrentViewExtentCoordinates, transform, transformExtent } from './methods/projection';
 import { zoomToVectors, zoomToLayer } from './methods/zoom';
 import { addBehavior, attachBehavior, attachBehaviorsByWeight } from './methods/behavior';
 import { measureGeometry } from '../utils/measure';
@@ -58,6 +58,7 @@ const createInstance = ({ target, options = {} }) => {
     attachBehavior,
     attachBehaviorsByWeight,
     measureGeometry,
+    getCurrentViewExtentCoordinates,
     transform,
     transformExtent,
   };
diff --git a/src/instance/methods/projection.js b/src/instance/methods/projection.js
index 27d8993..e7c225a 100644
--- a/src/instance/methods/projection.js
+++ b/src/instance/methods/projection.js
@@ -1,2 +1,17 @@
+import { transformExtent } from 'ol/proj';
+
 // Export OpenLayers transform functions
-export { transform, transformExtent } from 'ol/proj';
\ No newline at end of file
+export { transform, transformExtent } from 'ol/proj';
+
+/**
+ * Returns the map's current view extent in the specified projection coordinates.
+ * @param {import('ol/proj').ProjectionLike} source Source projection-like.
+ *     Defaults to 'EPSG:3857'.
+ * @param {import('ol/proj').ProjectionLike} destination Destination projection-like.
+ *     Defaults to 'EPSG:4326'.
+ * @return {import('ol/extent').Extent} The transformed extent.
+ */
+export function getCurrentViewExtentCoordinates(source = 'EPSG:3857', destination = 'EPSG:4326') {
+  const extent = this.map.getView().calculateExtent(this.map.getSize());
+  return transformExtent(extent, source, destination);
+}