[core] Render fill-extrusion layers (#8431)

1 files changed, 52 insertions, 0 deletions

diff --git a/include/mbgl/style/light.hpp b/include/mbgl/style/light.hpp
new file mode 100644
index 0000000000..bec8e6ddeb
--- /dev/null
+++ b/include/mbgl/style/light.hpp
@@ -0,0 +1,52 @@
+#pragma once
+
+#include <mbgl/style/property_value.hpp>
+#include <mbgl/style/transition_options.hpp>
+#include <mbgl/style/types.hpp>
+#include <mbgl/style/position.hpp>
+#include <mbgl/util/color.hpp>
+#include <mbgl/util/indexed_tuple.hpp>
+
+namespace mbgl {
+namespace style {
+
+template <class T>
+class LightProperty {
+public:
+    using Type = T;
+    using ValueType = PropertyValue<T>;
+
+    PropertyValue<T> value;
+    TransitionOptions transition;
+};
+
+struct LightAnchor : LightProperty<LightAnchorType> {
+    static LightAnchorType defaultValue() {
+        return LightAnchorType::Viewport;
+    }
+};
+
+struct LightPosition : LightProperty<Position> {
+    static Position defaultValue() {
+        std::array<float, 3> default_ = { { 1.15, 210, 30 } };
+        return Position{ { default_ } };
+    }
+};
+
+struct LightColor : LightProperty<Color> {
+    static Color defaultValue() {
+        return Color::white();
+    }
+};
+
+struct LightIntensity : LightProperty<float> {
+    static float defaultValue() {
+        return 0.5;
+    }
+};
+
+using LightProperties = TypeList<LightAnchor, LightPosition, LightColor, LightIntensity>;
+class Light : public IndexedTuple<LightProperties, LightProperties> {};
+
+} // namespace style
+} // namespace mbgl