From 46b80961c94ddde7aeaaaba988266f557d1a6d06 Mon Sep 17 00:00:00 2001 From: "r.kuznetsov" Date: Wed, 7 Dec 2016 10:30:34 +0300 Subject: [PATCH] Added preallocation of vectors in RuleDrawer --- drape_frontend/rule_drawer.cpp | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drape_frontend/rule_drawer.cpp b/drape_frontend/rule_drawer.cpp index 5ba75f0d91..f78fcb7086 100644 --- a/drape_frontend/rule_drawer.cpp +++ b/drape_frontend/rule_drawer.cpp @@ -29,6 +29,8 @@ namespace { int constexpr kOutlineMinZoomLevel = 16; + // 10 11 12 13 14 15 16 17 18 19 +vector const kAverageSegmentsCount = { 10000, 5000, 10000, 5000, 2500, 5000, 2000, 1000, 500, 500 }; df::BaseApplyFeature::HotelData ExtractHotelData(FeatureType const & f) { @@ -65,7 +67,12 @@ void ExtractTrafficGeometry(FeatureType const & f, df::RoadClass const & roadCla static vector directions = {traffic::TrafficInfo::RoadSegmentId::kForwardDirection, traffic::TrafficInfo::RoadSegmentId::kReverseDirection}; auto & segments = geometry[f.GetID().m_mwmId]; - segments.reserve(segments.size() + directions.size() * (polyline.GetSize() - 1)); + + int const index = zoomLevel - 10; // 10 - the first zoom level in kAverageSegmentsCount. + ASSERT_GREATER(index, 0, ()); + ASSERT_LESS(index, kAverageSegmentsCount.size(), ()); + segments.reserve(kAverageSegmentsCount[index]); + for (uint16_t segIndex = 0; segIndex + 1 < static_cast(polyline.GetSize()); ++segIndex) { for (size_t dirIndex = 0; dirIndex < directions.size(); ++dirIndex)