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Tuned two-way roads offset in traffic rendering

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r.kuznetsov 2016-12-20 14:58:57 +03:00 • committed by Vladimir Byko-Ianko
parent 2a6fb57d63
commit bc3665d1c6
6 changed files with 59 additions and 18 deletions
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24
drape_frontend/rule_drawer.cpp
View file

@ -58,13 +58,10 @@ void ExtractTrafficGeometry(FeatureType const & f, df::RoadClass const & roadCla
auto const & regionData = f.GetID().m_mwmId.GetInfo()->GetRegionData();
bool const isLeftHandTraffic = regionData.Get(feature::RegionData::RD_DRIVING) == "l";
// Calculate road offset for two-way roads. The offset is available since a zoom level in
// kMinOffsetZoomLevels.
// Calculate offset between road lines in mercator for two-way roads.
double twoWayOffset = 0.0;
static vector<int> const kMinOffsetZoomLevels = { 13, 11, 10 };
bool const needTwoWayOffset = !oneWay && zoomLevel > kMinOffsetZoomLevels[static_cast<int>(roadClass)];
if (needTwoWayOffset)
twoWayOffset = pixelToGlobalScale * 0.5 * df::TrafficRenderer::GetPixelWidth(roadClass, zoomLevel);
if (!oneWay)
twoWayOffset = pixelToGlobalScale * df::TrafficRenderer::GetTwoWayOffset(roadClass, zoomLevel);
static vector<uint8_t> directions = {traffic::TrafficInfo::RoadSegmentId::kForwardDirection,
traffic::TrafficInfo::RoadSegmentId::kReverseDirection};
@ -93,7 +90,7 @@ void ExtractTrafficGeometry(FeatureType const & f, df::RoadClass const & roadCla
if (segment[0].EqualDxDy(segment[1], kEps))
break;
if (needTwoWayOffset)
if (!oneWay)
{
m2::PointD const tangent = (segment[1] - segment[0]).Normalize();
m2::PointD const normal = isLeftHandTraffic ? m2::PointD(-tangent.y, tangent.x) :
@ -134,13 +131,21 @@ RuleDrawer::RuleDrawer(TDrawerCallback const & fn,
m_globalRect = m_context->GetTileKey().GetGlobalRect();
int32_t tileSize = df::VisualParams::Instance().GetTileSize();
auto & vparams = df::VisualParams::Instance();
int32_t tileSize = vparams.GetTileSize();
m2::RectD const r = m_context->GetTileKey().GetGlobalRect(false /* clipByDataMaxZoom */);
ScreenBase geometryConvertor;
geometryConvertor.OnSize(0, 0, tileSize, tileSize);
geometryConvertor.SetFromRect(m2::AnyRectD(r));
m_currentScaleGtoP = 1.0f / geometryConvertor.GetScale();
// Here we support only two virtual tile size: 2048 px for high resolution and 1024 px for others.
// It helps to render traffic the same on wide range of devices.
uint32_t const kTrafficTileSize = vparams.GetVisualScale() < df::VisualParams::kXxhdpiScale ? 1024 : 2048;
geometryConvertor.OnSize(0, 0, kTrafficTileSize, kTrafficTileSize);
geometryConvertor.SetFromRect(m2::AnyRectD(r));
m_trafficScalePtoG = geometryConvertor.GetScale();
int const kAverageOverlaysCount = 200;
m_mapShapes[df::OverlayType].reserve(kAverageOverlaysCount);
}
@ -342,7 +347,6 @@ void RuleDrawer::operator()(FeatureType const & f)
bool const oneWay = ftypes::IsOneWayChecker::Instance()(f);
auto const highwayClass = ftypes::GetHighwayClass(f);
double const pixelToGlobalScale = 1.0 / m_currentScaleGtoP;
for (size_t i = 0; i < ARRAY_SIZE(checkers); ++i)
{
auto const & classes = checkers[i].m_highwayClasses;
@ -355,7 +359,7 @@ void RuleDrawer::operator()(FeatureType const & f)
f.ForEachPoint([&points](m2::PointD const & p) { points.emplace_back(p); },
FeatureType::BEST_GEOMETRY);
ExtractTrafficGeometry(f, checkers[i].m_roadClass, m2::PolylineD(points), oneWay,
zoomLevel, pixelToGlobalScale, m_trafficGeometry);
zoomLevel, m_trafficScalePtoG, m_trafficGeometry);
break;
}
}

1
drape_frontend/rule_drawer.hpp
View file

@ -46,6 +46,7 @@ private:
ref_ptr<EngineContext> m_context;
m2::RectD m_globalRect;
double m_currentScaleGtoP;
double m_trafficScalePtoG;
bool const m_is3dBuidings;

28
drape_frontend/traffic_renderer.cpp
View file

@ -31,7 +31,7 @@ float const kLeftWidthInPixel[] =
// 1 2 3 4 5 6 7 8 9 10
0.5f, 0.5f, 0.5f, 0.5f, 0.5f, 0.5f, 0.5f, 0.5f, 0.5f, 0.5f,
//11 12 13 14 15 16 17 18 19 20
0.5f, 0.5f, 0.5f, 0.5f, 2.0f, 2.5f, 3.0f, 4.0f, 4.0f, 4.0f
0.5f, 0.5f, 0.5f, 0.5f, 0.7f, 2.5f, 3.0f, 4.0f, 4.0f, 4.0f
};
float const kRightWidthInPixel[] =
@ -39,7 +39,7 @@ float const kRightWidthInPixel[] =
// 1 2 3 4 5 6 7 8 9 10
2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 3.0f, 3.0f,
//11 12 13 14 15 16 17 18 19 20
3.0f, 3.0f, 4.0f, 4.0f, 2.0f, 2.5f, 3.0f, 4.0f, 4.0f, 4.0f
3.0f, 3.0f, 4.0f, 4.0f, 3.8f, 2.5f, 3.0f, 4.0f, 4.0f, 4.0f
};
float const kRoadClass1WidthScalar[] =
@ -58,6 +58,14 @@ float const kRoadClass2WidthScalar[] =
0.3f, 0.3f, 0.3f, 0.3f, 0.5f, 0.5f, 0.5f, 0.8f, 0.9f, 1.0f
};
float const kTwoWayOffsetInPixel[] =
{
// 1 2 3 4 5 6 7 8 9 10
0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f,
//11 12 13 14 15 16 17 18 19 20
0.0f, 0.5f, 0.5f, 0.5f, 1.0f, 2.5f, 2.5f, 2.5f, 2.5f, 2.5f
};
vector<int> const kLineDrawerRoadClass1 = {12, 13, 14};
vector<int> const kLineDrawerRoadClass2 = {15, 16};
@ -237,6 +245,22 @@ void TrafficRenderer::Clear(MwmSet::MwmId const & mwmId)
m_renderData.erase(remove_if(m_renderData.begin(), m_renderData.end(), removePredicate), m_renderData.end());
}
// static
float TrafficRenderer::GetTwoWayOffset(RoadClass const & roadClass, int zoomLevel)
{
// There is no offset for class-0 roads, the offset for them is created by
// kLeftWidthInPixel and kRightWidthInPixel.
int const kRoadClass0MinZoomLevel = 14;
if (roadClass == RoadClass::Class0 && zoomLevel <= kRoadClass0MinZoomLevel)
return 0.0f;
ASSERT_GREATER(zoomLevel, 1, ());
ASSERT_LESS_OR_EQUAL(zoomLevel, scales::GetUpperStyleScale(), ());
int const index = zoomLevel - 1;
float const halfWidth = 0.5f * df::TrafficRenderer::GetPixelWidth(roadClass, zoomLevel);
return halfWidth + kTwoWayOffsetInPixel[index] * VisualParams::Instance().GetVisualScale();
}
// static
float TrafficRenderer::GetPixelWidth(RoadClass const & roadClass, int zoomLevel)
{

3
drape_frontend/traffic_renderer.hpp
View file

@ -36,10 +36,11 @@ public:
buffer_vector<TileKey, 8> const & tilesToDelete);
void OnGeometryReady(int currentZoomLevel);
static float GetPixelWidth(RoadClass const & roadClass, int zoomLevel);
static float GetTwoWayOffset(RoadClass const & roadClass, int zoomLevel);
static bool CanBeRendereredAsLine(RoadClass const & roadClass, int zoomLevel, int & width);
private:
static float GetPixelWidth(RoadClass const & roadClass, int zoomLevel);
static float GetPixelWidthInternal(RoadClass const & roadClass, int zoomLevel);
vector<TrafficRenderData> m_renderData;

15
drape_frontend/visual_params.cpp
View file

@ -32,6 +32,11 @@ static bool g_isInited = false;
#define ASSERT_INITED
#endif
double const VisualParams::kMdpiScale = 1.0;
double const VisualParams::kHdpiScale = 1.5;
double const VisualParams::kXhdpiScale = 2.0;
double const VisualParams::k6plusScale = 2.4;
double const VisualParams::kXxhdpiScale = 3.0;
void VisualParams::Init(double vs, uint32_t tileSize)
{
@ -77,11 +82,11 @@ string const & VisualParams::GetResourcePostfix(double visualScale)
{
static visual_scale_t postfixes[] =
{
make_pair("mdpi", 1.0),
make_pair("hdpi", 1.5),
make_pair("xhdpi", 2.0),
make_pair("xxhdpi", 3.0),
make_pair("6plus", 2.4),
make_pair("mdpi", kMdpiScale),
make_pair("hdpi", kHdpiScale),
make_pair("xhdpi", kXhdpiScale),
make_pair("xxhdpi", kXxhdpiScale),
make_pair("6plus", k6plusScale),
};
// Looking for the nearest available scale.

6
drape_frontend/visual_params.hpp
View file

@ -13,6 +13,12 @@ namespace df
class VisualParams : private noncopyable
{
public:
static double const kMdpiScale;
static double const kHdpiScale;
static double const kXhdpiScale;
static double const k6plusScale;
static double const kXxhdpiScale;
static void Init(double vs, uint32_t tileSize);
static VisualParams & Instance();