[core] add raster-dem source type and hillshade layer type (#10642)

8 files changed, 126 insertions, 4 deletions

diff --git a/include/mbgl/style/layer.hpp b/include/mbgl/style/layer.hpp
index eb2dbf830b..8a5a4236b3 100644
--- a/include/mbgl/style/layer.hpp
+++ b/include/mbgl/style/layer.hpp
@@ -19,6 +19,7 @@ class LineLayer;
 class CircleLayer;
 class SymbolLayer;
 class RasterLayer;
+class HillshadeLayer;
 class BackgroundLayer;
 class CustomLayer;
 class FillExtrusionLayer;
@@ -86,6 +87,8 @@ public:
             return std::forward<V>(visitor)(*as<RasterLayer>());
         case LayerType::Background:
             return std::forward<V>(visitor)(*as<BackgroundLayer>());
+        case LayerType::Hillshade:
+            return std::forward<V>(visitor)(*as<HillshadeLayer>());
         case LayerType::Custom:
             return std::forward<V>(visitor)(*as<CustomLayer>());
         case LayerType::FillExtrusion:
diff --git a/include/mbgl/style/layer_type.hpp b/include/mbgl/style/layer_type.hpp
index 66ff834eee..951757134b 100644
--- a/include/mbgl/style/layer_type.hpp
+++ b/include/mbgl/style/layer_type.hpp
@@ -9,10 +9,11 @@ enum class LayerType {
     Circle,
     Symbol,
     Raster,
+    Hillshade,
     Background,
     Custom,
     FillExtrusion,
 };
 
 } // namespace style
-} // namespace mbgl
\ No newline at end of file
+} // namespace mbgl
diff --git a/include/mbgl/style/layers/hillshade_layer.hpp b/include/mbgl/style/layers/hillshade_layer.hpp
new file mode 100644
index 0000000000..35664da46c
--- /dev/null
+++ b/include/mbgl/style/layers/hillshade_layer.hpp
@@ -0,0 +1,86 @@
+// This file is generated. Do not edit.
+
+#pragma once
+
+#include <mbgl/style/layer.hpp>
+#include <mbgl/style/filter.hpp>
+#include <mbgl/style/property_value.hpp>
+#include <mbgl/style/data_driven_property_value.hpp>
+
+#include <mbgl/util/color.hpp>
+
+namespace mbgl {
+namespace style {
+
+class TransitionOptions;
+
+class HillshadeLayer : public Layer {
+public:
+    HillshadeLayer(const std::string& layerID, const std::string& sourceID);
+    ~HillshadeLayer() final;
+
+    // Source
+    const std::string& getSourceID() const;
+
+    // Visibility
+    void setVisibility(VisibilityType) final;
+
+    // Zoom range
+    void setMinZoom(float) final;
+    void setMaxZoom(float) final;
+
+    // Paint properties
+
+    static PropertyValue<float> getDefaultHillshadeIlluminationDirection();
+    PropertyValue<float> getHillshadeIlluminationDirection() const;
+    void setHillshadeIlluminationDirection(PropertyValue<float>);
+    void setHillshadeIlluminationDirectionTransition(const TransitionOptions&);
+    TransitionOptions getHillshadeIlluminationDirectionTransition() const;
+
+    static PropertyValue<HillshadeIlluminationAnchorType> getDefaultHillshadeIlluminationAnchor();
+    PropertyValue<HillshadeIlluminationAnchorType> getHillshadeIlluminationAnchor() const;
+    void setHillshadeIlluminationAnchor(PropertyValue<HillshadeIlluminationAnchorType>);
+    void setHillshadeIlluminationAnchorTransition(const TransitionOptions&);
+    TransitionOptions getHillshadeIlluminationAnchorTransition() const;
+
+    static PropertyValue<float> getDefaultHillshadeExaggeration();
+    PropertyValue<float> getHillshadeExaggeration() const;
+    void setHillshadeExaggeration(PropertyValue<float>);
+    void setHillshadeExaggerationTransition(const TransitionOptions&);
+    TransitionOptions getHillshadeExaggerationTransition() const;
+
+    static PropertyValue<Color> getDefaultHillshadeShadowColor();
+    PropertyValue<Color> getHillshadeShadowColor() const;
+    void setHillshadeShadowColor(PropertyValue<Color>);
+    void setHillshadeShadowColorTransition(const TransitionOptions&);
+    TransitionOptions getHillshadeShadowColorTransition() const;
+
+    static PropertyValue<Color> getDefaultHillshadeHighlightColor();
+    PropertyValue<Color> getHillshadeHighlightColor() const;
+    void setHillshadeHighlightColor(PropertyValue<Color>);
+    void setHillshadeHighlightColorTransition(const TransitionOptions&);
+    TransitionOptions getHillshadeHighlightColorTransition() const;
+
+    static PropertyValue<Color> getDefaultHillshadeAccentColor();
+    PropertyValue<Color> getHillshadeAccentColor() const;
+    void setHillshadeAccentColor(PropertyValue<Color>);
+    void setHillshadeAccentColorTransition(const TransitionOptions&);
+    TransitionOptions getHillshadeAccentColorTransition() const;
+
+    // Private implementation
+
+    class Impl;
+    const Impl& impl() const;
+
+    Mutable<Impl> mutableImpl() const;
+    HillshadeLayer(Immutable<Impl>);
+    std::unique_ptr<Layer> cloneRef(const std::string& id) const final;
+};
+
+template <>
+inline bool Layer::is<HillshadeLayer>() const {
+    return getType() == LayerType::Hillshade;
+}
+
+} // namespace style
+} // namespace mbgl
diff --git a/include/mbgl/style/layers/layer.hpp.ejs b/include/mbgl/style/layers/layer.hpp.ejs
index 4ee5545247..265dd57e1f 100644
--- a/include/mbgl/style/layers/layer.hpp.ejs
+++ b/include/mbgl/style/layers/layer.hpp.ejs
@@ -35,7 +35,7 @@ public:
 <% if (type !== 'background') { -%>
     // Source
     const std::string& getSourceID() const;
-<% if (type !== 'raster') { -%>
+<% if (type !== 'raster' && type !== 'hillshade') { -%>
     const std::string& getSourceLayer() const;
     void setSourceLayer(const std::string& sourceLayer);
 
diff --git a/include/mbgl/style/source.hpp b/include/mbgl/style/source.hpp
index 0b6a6c72d9..2f2838ade8 100644
--- a/include/mbgl/style/source.hpp
+++ b/include/mbgl/style/source.hpp
@@ -17,6 +17,7 @@ namespace style {
 
 class VectorSource;
 class RasterSource;
+class RasterDEMSource;
 class GeoJSONSource;
 class SourceObserver;
 
diff --git a/include/mbgl/style/sources/raster_dem_source.hpp b/include/mbgl/style/sources/raster_dem_source.hpp
new file mode 100644
index 0000000000..82588613bc
--- /dev/null
+++ b/include/mbgl/style/sources/raster_dem_source.hpp
@@ -0,0 +1,25 @@
+#pragma once
+
+#include <mbgl/style/sources/raster_source.hpp>
+#include <mbgl/util/tileset.hpp>
+#include <mbgl/util/variant.hpp>
+
+namespace mbgl {
+
+class AsyncRequest;
+
+namespace style {
+
+class RasterDEMSource : public RasterSource {
+public:
+    RasterDEMSource(std::string id, variant<std::string, Tileset> urlOrTileset, uint16_t tileSize);
+
+};
+
+template <>
+inline bool Source::is<RasterDEMSource>() const {
+    return getType() == SourceType::RasterDEM;
+}
+
+} // namespace style
+} // namespace mbgl
diff --git a/include/mbgl/style/sources/raster_source.hpp b/include/mbgl/style/sources/raster_source.hpp
index 7f23a7ca4b..5aa81aa979 100644
--- a/include/mbgl/style/sources/raster_source.hpp
+++ b/include/mbgl/style/sources/raster_source.hpp
@@ -12,8 +12,8 @@ namespace style {
 
 class RasterSource : public Source {
 public:
-    RasterSource(std::string id, variant<std::string, Tileset> urlOrTileset, uint16_t tileSize);
-    ~RasterSource() final;
+    RasterSource(std::string id, variant<std::string, Tileset> urlOrTileset, uint16_t tileSize, SourceType sourceType = SourceType::Raster);
+    ~RasterSource() override;
 
     const variant<std::string, Tileset>& getURLOrTileset() const;
     optional<std::string> getURL() const;
diff --git a/include/mbgl/style/types.hpp b/include/mbgl/style/types.hpp
index 6fe457e181..693972a72f 100644
--- a/include/mbgl/style/types.hpp
+++ b/include/mbgl/style/types.hpp
@@ -10,6 +10,7 @@ namespace style {
 enum class SourceType : uint8_t {
     Vector,
     Raster,
+    RasterDEM,
     GeoJSON,
     Video,
     Annotations,
@@ -37,6 +38,11 @@ enum class LineJoinType : uint8_t {
     FlipBevel
 };
 
+enum class HillshadeIlluminationAnchorType : bool {
+    Map,
+    Viewport
+};
+
 enum class TranslateAnchorType : bool {
     Map,
     Viewport