[core, ios, macos, android, node] Heatmap layer (#11046)

Co-Authored-By: Konstantin Käfer <mail@kkaefer.com>
Co-Authored-By: Anand Thakker <anandthakker@users.noreply.github.com>
Co-Authored-By: Minh Nguyễn <1ec5@users.noreply.github.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/src/mbgl/style/layers/heatmap_layer_impl.cpp b/src/mbgl/style/layers/heatmap_layer_impl.cpp
new file mode 100644
index 0000000000..af20888d9d
--- /dev/null
+++ b/src/mbgl/style/layers/heatmap_layer_impl.cpp
@@ -0,0 +1,15 @@
+#include <mbgl/style/layers/heatmap_layer_impl.hpp>
+
+namespace mbgl {
+namespace style {
+
+bool HeatmapLayer::Impl::hasLayoutDifference(const Layer::Impl& other) const {
+    assert(dynamic_cast<const HeatmapLayer::Impl*>(&other));
+    const auto& impl = static_cast<const style::HeatmapLayer::Impl&>(other);
+    return filter     != impl.filter ||
+           visibility != impl.visibility ||
+           paint.hasDataDrivenPropertyDifference(impl.paint);
+}
+
+} // namespace style
+} // namespace mbgl