[core] Add RendererState::{pixelForLatLng,latLngForPixel}

2 files changed, 18 insertions, 0 deletions

diff --git a/platform/default/mbgl/gl/headless_frontend.cpp b/platform/default/mbgl/gl/headless_frontend.cpp
index 30def38f71..37b0f91f32 100644
--- a/platform/default/mbgl/gl/headless_frontend.cpp
+++ b/platform/default/mbgl/gl/headless_frontend.cpp
@@ -87,6 +87,21 @@ bool HeadlessFrontend::hasSource(const std::string& id) {
 
     return false;
 }
+ScreenCoordinate HeadlessFrontend::pixelForLatLng(const LatLng& coordinate) {
+    if (updateParameters) {
+        return RendererState::pixelForLatLng(*updateParameters, coordinate);
+    }
+
+    return ScreenCoordinate {};
+}
+
+LatLng HeadlessFrontend::latLngForPixel(const ScreenCoordinate& point) {
+    if (updateParameters) {
+        return RendererState::latLngForPixel(*updateParameters, point);
+    }
+
+    return LatLng {};
+}
 
 void HeadlessFrontend::setSize(Size size_) {
     if (size != size_) {
diff --git a/platform/default/mbgl/gl/headless_frontend.hpp b/platform/default/mbgl/gl/headless_frontend.hpp
index 45586033b0..18f0cfa537 100644
--- a/platform/default/mbgl/gl/headless_frontend.hpp
+++ b/platform/default/mbgl/gl/headless_frontend.hpp
@@ -39,6 +39,9 @@ public:
     bool hasLayer(const std::string&);
     bool hasSource(const std::string&);
 
+    ScreenCoordinate pixelForLatLng(const LatLng&);
+    LatLng latLngForPixel(const ScreenCoordinate&);
+
     PremultipliedImage readStillImage();
     PremultipliedImage render(Map&);