[core] split off render layers

1 files changed, 70 insertions, 0 deletions

diff --git a/src/mbgl/renderer/render_fill_layer.cpp b/src/mbgl/renderer/render_fill_layer.cpp
new file mode 100644
index 0000000000..126189fc50
--- /dev/null
+++ b/src/mbgl/renderer/render_fill_layer.cpp
@@ -0,0 +1,70 @@
+#include <mbgl/renderer/render_fill_layer.hpp>
+#include <mbgl/renderer/fill_bucket.hpp>
+#include <mbgl/style/layers/fill_layer_impl.hpp>
+#include <mbgl/geometry/feature_index.hpp>
+#include <mbgl/util/math.hpp>
+#include <mbgl/util/intersection_tests.hpp>
+
+namespace mbgl {
+
+RenderFillLayer::RenderFillLayer(const style::FillLayer::Impl& _impl)
+        : RenderLayer(style::LayerType::Fill, _impl),
+          impl(&_impl) {
+}
+
+std::unique_ptr<RenderLayer> RenderFillLayer::clone() const {
+    return std::make_unique<RenderFillLayer>(*this);
+}
+
+std::unique_ptr<Bucket> RenderFillLayer::createBucket(const BucketParameters& parameters, const std::vector<const RenderLayer*>& layers) const {
+    return std::make_unique<FillBucket>(parameters, layers);
+}
+
+void RenderFillLayer::cascade(const style::CascadeParameters& parameters) {
+    unevaluated = impl->cascading.cascade(parameters, std::move(unevaluated));
+}
+
+bool RenderFillLayer::evaluate(const style::PropertyEvaluationParameters& parameters) {
+    evaluated = unevaluated.evaluate(parameters);
+
+    if (unevaluated.get<style::FillOutlineColor>().isUndefined()) {
+        evaluated.get<style::FillOutlineColor>() = evaluated.get<style::FillColor>();
+    }
+
+    passes = RenderPass::None;
+
+    if (evaluated.get<style::FillAntialias>()) {
+        passes |= RenderPass::Translucent;
+    }
+
+    if (!unevaluated.get<style::FillPattern>().isUndefined()
+        || evaluated.get<style::FillColor>().constantOr(Color()).a < 1.0f
+        || evaluated.get<style::FillOpacity>().constantOr(0) < 1.0f) {
+        passes |= RenderPass::Translucent;
+    } else {
+        passes |= RenderPass::Opaque;
+    }
+
+    return unevaluated.hasTransition();
+}
+
+
+bool RenderFillLayer::queryIntersectsFeature(
+        const GeometryCoordinates& queryGeometry,
+        const GeometryTileFeature& feature,
+        const float,
+        const float bearing,
+        const float pixelsToTileUnits) const {
+
+    auto translatedQueryGeometry = FeatureIndex::translateQueryGeometry(
+            queryGeometry,
+            evaluated.get<style::FillTranslate>(),
+            evaluated.get<style::FillTranslateAnchor>(),
+            bearing,
+            pixelsToTileUnits);
+
+    return util::polygonIntersectsMultiPolygon(translatedQueryGeometry.value_or(queryGeometry), feature.getGeometries());
+}
+
+
+}