[core] allow changing the orientation

You can now change the orientation of north to be to the right, bottom, left in addition to the default of top

1 files changed, 14 insertions, 0 deletions

diff --git a/platform/default/glfw_view.cpp b/platform/default/glfw_view.cpp
index 418f427c74..c83e6c324b 100644
--- a/platform/default/glfw_view.cpp
+++ b/platform/default/glfw_view.cpp
@@ -92,6 +92,7 @@ GLFWView::GLFWView(bool fullscreen_, bool benchmark_)
     printf("- Press `X` to reset the transform\n");
     printf("- Press `N` to reset north\n");
     printf("- Press `R` to toggle any available `night` style class\n");
+    printf("- Press `Z` to cycle through north orientations\n");
     printf("\n");
     printf("- Press `1` through `6` to add increasing numbers of point annotations for testing\n");
     printf("- Press `7` through `0` to add increasing numbers of shape annotations for testing\n");
@@ -153,6 +154,9 @@ void GLFWView::onKey(GLFWwindow *window, int key, int /*scancode*/, int action,
             if (!mods)
                 view->map->resetNorth();
             break;
+        case GLFW_KEY_Z:
+            view->nextOrientation();
+            break;
         case GLFW_KEY_Q:
             view->clearAnnotations();
             break;
@@ -218,6 +222,16 @@ GLFWView::makeSpriteImage(int width, int height, float pixelRatio) {
     return std::make_shared<mbgl::SpriteImage>(width, height, pixelRatio, std::move(pixels));
 }
 
+void GLFWView::nextOrientation() {
+    using NO = mbgl::NorthOrientation;
+    switch (map->getNorthOrientation()) {
+        case NO::Upwards: map->setNorthOrientation(NO::Rightwards); break;
+        case NO::Rightwards: map->setNorthOrientation(NO::Downwards); break;
+        case NO::Downwards: map->setNorthOrientation(NO::Leftwards); break;
+        default: map->setNorthOrientation(NO::Upwards); break;
+    }
+}
+
 void GLFWView::addRandomCustomPointAnnotations(int count) {
     std::vector<mbgl::PointAnnotation> points;