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Make planetiler-openmaptiles runnable as a standalone project (#19)
This commit is contained in:
Michael Barry
132
src/main/java/org/openmaptiles/layers/Water.java
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132
src/main/java/org/openmaptiles/layers/Water.java
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/*
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Copyright (c) 2021, MapTiler.com & OpenMapTiles contributors.
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All rights reserved.
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Code license: BSD 3-Clause License
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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* Neither the name of the copyright holder nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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Design license: CC-BY 4.0
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See https://github.com/openmaptiles/openmaptiles/blob/master/LICENSE.md for details on usage
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*/
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package org.openmaptiles.layers;
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import com.onthegomap.planetiler.FeatureCollector;
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import com.onthegomap.planetiler.FeatureMerge;
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import com.onthegomap.planetiler.ForwardingProfile;
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import com.onthegomap.planetiler.VectorTile;
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import com.onthegomap.planetiler.config.PlanetilerConfig;
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import com.onthegomap.planetiler.expression.MultiExpression;
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import com.onthegomap.planetiler.geo.GeometryException;
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import com.onthegomap.planetiler.reader.SourceFeature;
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import com.onthegomap.planetiler.stats.Stats;
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import com.onthegomap.planetiler.util.Translations;
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import java.util.List;
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import org.openmaptiles.OpenMapTilesProfile;
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import org.openmaptiles.generated.OpenMapTilesSchema;
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import org.openmaptiles.generated.Tables;
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import org.openmaptiles.util.Utils;
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/**
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* Defines the logic for generating map elements for oceans and lakes in the {@code water} layer from source features.
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* <p>
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* This class is ported to Java from
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* <a href="https://github.com/openmaptiles/openmaptiles/tree/master/layers/water">OpenMapTiles water sql files</a>.
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*/
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public class Water implements
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OpenMapTilesSchema.Water,
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Tables.OsmWaterPolygon.Handler,
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OpenMapTilesProfile.NaturalEarthProcessor,
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OpenMapTilesProfile.OsmWaterPolygonProcessor,
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ForwardingProfile.FeaturePostProcessor {
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/*
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* At low zoom levels, use natural earth for oceans and major lakes, and at high zoom levels
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* use OpenStreetMap data. OpenStreetMap data contains smaller bodies of water, but not
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* large ocean polygons. For oceans, use https://osmdata.openstreetmap.de/data/water-polygons.html
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* which infers ocean polygons by preprocessing all coastline elements.
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*/
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private final MultiExpression.Index<String> classMapping;
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private final PlanetilerConfig config;
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public Water(Translations translations, PlanetilerConfig config, Stats stats) {
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this.classMapping = FieldMappings.Class.index();
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this.config = config;
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}
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@Override
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public void processNaturalEarth(String table, SourceFeature feature, FeatureCollector features) {
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record WaterInfo(int minZoom, int maxZoom, String clazz) {}
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WaterInfo info = switch (table) {
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case "ne_110m_ocean" -> new WaterInfo(0, 1, FieldValues.CLASS_OCEAN);
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case "ne_50m_ocean" -> new WaterInfo(2, 4, FieldValues.CLASS_OCEAN);
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case "ne_10m_ocean" -> new WaterInfo(5, 5, FieldValues.CLASS_OCEAN);
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// TODO: get OSM ID from low-zoom natural earth lakes
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case "ne_110m_lakes" -> new WaterInfo(0, 1, FieldValues.CLASS_LAKE);
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case "ne_50m_lakes" -> new WaterInfo(2, 3, FieldValues.CLASS_LAKE);
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case "ne_10m_lakes" -> new WaterInfo(4, 5, FieldValues.CLASS_LAKE);
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default -> null;
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};
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if (info != null) {
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features.polygon(LAYER_NAME)
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.setBufferPixels(BUFFER_SIZE)
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.setZoomRange(info.minZoom, info.maxZoom)
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.setAttr(Fields.CLASS, info.clazz);
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}
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}
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@Override
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public void processOsmWater(SourceFeature feature, FeatureCollector features) {
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features.polygon(LAYER_NAME)
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.setBufferPixels(BUFFER_SIZE)
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.setAttr(Fields.CLASS, FieldValues.CLASS_OCEAN)
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.setMinZoom(6);
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}
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@Override
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public void process(Tables.OsmWaterPolygon element, FeatureCollector features) {
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if (!"bay".equals(element.natural())) {
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String clazz = "riverbank".equals(element.waterway()) ? FieldValues.CLASS_RIVER :
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classMapping.getOrElse(element.source(), FieldValues.CLASS_LAKE);
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features.polygon(LAYER_NAME)
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.setBufferPixels(BUFFER_SIZE)
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.setMinPixelSizeBelowZoom(11, 2)
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.setMinZoom(6)
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.setAttr(Fields.ID, element.source().id())
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.setAttr(Fields.INTERMITTENT, element.isIntermittent() ? 1 : 0)
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.setAttrWithMinzoom(Fields.BRUNNEL, Utils.brunnel(element.isBridge(), element.isTunnel()), 12)
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.setAttr(Fields.CLASS, clazz);
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}
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}
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@Override
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public List<VectorTile.Feature> postProcess(int zoom, List<VectorTile.Feature> items) throws GeometryException {
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return items.size() > 1 ? FeatureMerge.mergeOverlappingPolygons(items, config.minFeatureSize(zoom)) : items;
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}
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}
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