1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
#include <mbgl/annotation/shape_annotation_impl.hpp>
#include <mbgl/annotation/annotation_manager.hpp>
#include <mbgl/annotation/annotation_tile.hpp>
#include <mbgl/util/geojsonvt/geojsonvt_convert.hpp>
#include <mbgl/util/constants.hpp>
#include <mbgl/util/string.hpp>
#include <mbgl/style/style.hpp>
#include <mbgl/style/style_bucket.hpp>
#include <mbgl/layer/line_layer.hpp>
#include <mbgl/layer/fill_layer.hpp>
namespace mbgl {
using namespace mapbox::util::geojsonvt;
ShapeAnnotationImpl::ShapeAnnotationImpl(const AnnotationID id_,
const ShapeAnnotation& shape_,
const uint8_t maxZoom_)
: id(id_),
layerID("com.mapbox.annotations.shape." + util::toString(id)),
shape(shape_),
maxZoom(maxZoom_) {
}
void ShapeAnnotationImpl::updateStyle(Style& style) {
if (style.getLayer(layerID))
return;
std::unique_ptr<StyleLayer> layer;
std::string beforeLayerID = AnnotationManager::PointLayerID;
if (shape.properties.is<LinePaintProperties>()) {
layer = createLineLayer();
const LinePaintProperties& properties = shape.properties.get<LinePaintProperties>();
ClassProperties paintProperties;
paintProperties.set(PropertyKey::LineOpacity, ConstantFunction<float>(properties.opacity));
paintProperties.set(PropertyKey::LineWidth, ConstantFunction<float>(properties.width));
paintProperties.set(PropertyKey::LineColor, ConstantFunction<Color>(properties.color));
layer->styles.emplace(ClassID::Default, std::move(paintProperties));
} else if (shape.properties.is<FillPaintProperties>()) {
layer = createFillLayer();
const FillPaintProperties& properties = shape.properties.get<FillPaintProperties>();
ClassProperties paintProperties;
paintProperties.set(PropertyKey::FillOpacity, ConstantFunction<float>(properties.opacity));
paintProperties.set(PropertyKey::FillColor, ConstantFunction<Color>(properties.fill_color));
paintProperties.set(PropertyKey::FillOutlineColor, ConstantFunction<Color>(properties.stroke_color));
layer->styles.emplace(ClassID::Default, std::move(paintProperties));
} else {
beforeLayerID = shape.properties.get<std::string>();
const StyleLayer* sourceLayer = style.getLayer(beforeLayerID);
if (!sourceLayer) return;
switch (sourceLayer->type) {
case StyleLayerType::Line:
layer = createLineLayer();
break;
case StyleLayerType::Fill:
layer = createFillLayer();
break;
default:
return;
}
layer->styles = sourceLayer->styles;
layer->bucket->layout = sourceLayer->bucket->layout;
}
layer->bucket->name = layer->id;
layer->bucket->source = AnnotationManager::SourceID;
layer->bucket->source_layer = layer->id;
style.addLayer(std::move(layer), beforeLayerID);
}
std::unique_ptr<StyleLayer> ShapeAnnotationImpl::createLineLayer() {
type = ProjectedFeatureType::LineString;
std::unique_ptr<LineLayer> layer = std::make_unique<LineLayer>();
layer->id = layerID;
layer->type = StyleLayerType::Line;
layer->bucket = std::make_shared<StyleBucket>(layer->type);
layer->bucket->layout.set(PropertyKey::LineJoin, ConstantFunction<JoinType>(JoinType::Round));
return std::move(layer);
}
std::unique_ptr<StyleLayer> ShapeAnnotationImpl::createFillLayer() {
type = ProjectedFeatureType::Polygon;
std::unique_ptr<FillLayer> layer = std::make_unique<FillLayer>();
layer->id = layerID;
layer->type = StyleLayerType::Fill;
layer->bucket = std::make_shared<StyleBucket>(layer->type);
return std::move(layer);
}
void ShapeAnnotationImpl::updateTile(const TileID& tileID, AnnotationTile& tile) {
static const double baseTolerance = 3;
static const uint16_t extent = 4096;
if (!shapeTiler) {
const uint64_t maxAmountOfTiles = 1 << maxZoom;
const double tolerance = baseTolerance / (maxAmountOfTiles * extent);
ProjectedGeometryContainer rings;
std::vector<LonLat> points;
for (size_t i = 0; i < shape.segments[0].size(); ++i) { // first segment for now (no holes)
const double constraintedLatitude = ::fmin(::fmax(shape.segments[0][i].latitude, -util::LATITUDE_MAX), util::LATITUDE_MAX);
points.push_back(LonLat(shape.segments[0][i].longitude, constraintedLatitude));
}
if (type == ProjectedFeatureType::Polygon &&
(points.front().lon != points.back().lon || points.front().lat != points.back().lat)) {
points.push_back(LonLat(points.front().lon, points.front().lat));
}
ProjectedGeometryContainer ring = Convert::project(points, tolerance);
rings.members.push_back(ring);
std::vector<ProjectedFeature> features;
features.push_back(Convert::create(Tags(), type, rings));
shapeTiler = std::make_unique<mapbox::util::geojsonvt::GeoJSONVT>(features, maxZoom, 4, 100, 10);
}
const auto& shapeTile = shapeTiler->getTile(tileID.z, tileID.x, tileID.y);
if (!shapeTile)
return;
AnnotationTileLayer& layer = *tile.layers.emplace(layerID,
std::make_unique<AnnotationTileLayer>()).first->second;
for (auto& shapeFeature : shapeTile.features) {
FeatureType featureType = FeatureType::Unknown;
if (shapeFeature.type == TileFeatureType::LineString) {
featureType = FeatureType::LineString;
} else if (shapeFeature.type == TileFeatureType::Polygon) {
featureType = FeatureType::Polygon;
}
assert(featureType != FeatureType::Unknown);
GeometryCollection renderGeometry;
for (auto& shapeGeometry : shapeFeature.geometry) {
std::vector<Coordinate> renderLine;
auto& shapeRing = shapeGeometry.get<TileRing>();
for (auto& shapePoint : shapeRing.points) {
renderLine.emplace_back(shapePoint.x, shapePoint.y);
}
renderGeometry.push_back(renderLine);
}
layer.features.emplace_back(
std::make_shared<AnnotationTileFeature>(featureType, renderGeometry));
}
}
LatLngBounds ShapeAnnotationImpl::bounds() const {
LatLngBounds result;
for (const auto& segment : shape.segments) {
for (const auto& point : segment) {
result.extend(point);
}
}
return result;
}
}
|
