From f6e79d70735361438655f279c8699a786d25458c Mon Sep 17 00:00:00 2001
From: Lauren Budorick <lauren@mapbox.com>
Date: Thu, 27 Apr 2017 15:56:55 -0700
Subject: [core] Render fill-extrusion layers (#8431)

---
 src/mbgl/renderer/render_fill_extrusion_layer.cpp | 41 +++++++++++++++++++----
 1 file changed, 34 insertions(+), 7 deletions(-)

(limited to 'src/mbgl/renderer/render_fill_extrusion_layer.cpp')

diff --git a/src/mbgl/renderer/render_fill_extrusion_layer.cpp b/src/mbgl/renderer/render_fill_extrusion_layer.cpp
index a378f12cf0..8df0d36900 100644
--- a/src/mbgl/renderer/render_fill_extrusion_layer.cpp
+++ b/src/mbgl/renderer/render_fill_extrusion_layer.cpp
@@ -1,26 +1,53 @@
 #include <mbgl/renderer/render_fill_extrusion_layer.hpp>
-#include <mbgl/renderer/bucket.hpp>
+#include <mbgl/renderer/fill_extrusion_bucket.hpp>
 #include <mbgl/style/layers/fill_extrusion_layer_impl.hpp>
+#include <mbgl/geometry/feature_index.hpp>
+#include <mbgl/util/math.hpp>
+#include <mbgl/util/intersection_tests.hpp>
 
 namespace mbgl {
 
 RenderFillExtrusionLayer::RenderFillExtrusionLayer(const style::FillExtrusionLayer::Impl& _impl)
-        : RenderLayer(style::LayerType::FillExtrusion, _impl) {
+        : RenderLayer(style::LayerType::FillExtrusion, _impl),
+          impl(&_impl) {
 }
 
 std::unique_ptr<RenderLayer> RenderFillExtrusionLayer::clone() const {
     return std::make_unique<RenderFillExtrusionLayer>(*this);
 }
 
-std::unique_ptr<Bucket> RenderFillExtrusionLayer::createBucket(const BucketParameters&, const std::vector<const RenderLayer*>&) const {
-    return nullptr;
+std::unique_ptr<Bucket> RenderFillExtrusionLayer::createBucket(const BucketParameters& parameters, const std::vector<const RenderLayer*>& layers) const {
+    return std::make_unique<FillExtrusionBucket>(parameters, layers);
 }
 
-void RenderFillExtrusionLayer::cascade(const style::CascadeParameters&) {
+void RenderFillExtrusionLayer::cascade(const style::CascadeParameters& parameters) {
+    unevaluated = impl->cascading.cascade(parameters, std::move(unevaluated));
 }
 
-bool RenderFillExtrusionLayer::evaluate(const style::PropertyEvaluationParameters&) {
-    return false;
+bool RenderFillExtrusionLayer::evaluate(const style::PropertyEvaluationParameters& parameters) {
+    evaluated = unevaluated.evaluate(parameters);
+
+    passes = (evaluated.get<style::FillExtrusionOpacity>() > 0) ? RenderPass::Translucent
+                                                         : RenderPass::None;
+
+    return unevaluated.hasTransition();
+}
+
+bool RenderFillExtrusionLayer::queryIntersectsFeature(
+        const GeometryCoordinates& queryGeometry,
+        const GeometryTileFeature& feature,
+        const float,
+        const float bearing,
+        const float pixelsToTileUnits) const {
+
+    auto translatedQueryGeometry = FeatureIndex::translateQueryGeometry(
+            queryGeometry,
+            evaluated.get<style::FillExtrusionTranslate>(),
+            evaluated.get<style::FillExtrusionTranslateAnchor>(),
+            bearing,
+            pixelsToTileUnits);
+
+    return util::polygonIntersectsMultiPolygon(translatedQueryGeometry.value_or(queryGeometry), feature.getGeometries());
 }
 
 } // namespace mbgl
-- 
cgit v1.2.1