126 lines
4.3 KiB
Java
126 lines
4.3 KiB
Java
/*
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* Copyright 2017-2018 devemux86
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* Copyright 2017 Gustl22
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*
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* This program is free software: you can redistribute it and/or modify it under the
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* terms of the GNU Lesser General Public License as published by the Free Software
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* Foundation, either version 3 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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* PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.oscim.tiling.source.geojson;
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import org.oscim.core.MapElement;
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import org.oscim.core.Tag;
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import org.oscim.tiling.source.UrlTileSource;
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import org.oscim.utils.FastMath;
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import java.util.LinkedHashMap;
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import java.util.Map;
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public class MapzenGeojsonTileSource extends GeojsonTileSource {
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private static final String DEFAULT_URL = "https://tile.mapzen.com/mapzen/vector/v1/all";
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private static final String DEFAULT_PATH = "/{Z}/{X}/{Y}.json";
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public static class Builder<T extends Builder<T>> extends UrlTileSource.Builder<T> {
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private String locale = "";
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public Builder() {
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super(DEFAULT_URL, DEFAULT_PATH);
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keyName("api_key");
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overZoom(16);
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}
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public T locale(String locale) {
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this.locale = locale;
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return self();
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}
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public MapzenGeojsonTileSource build() {
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return new MapzenGeojsonTileSource(this);
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}
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}
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@SuppressWarnings("rawtypes")
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public static Builder<?> builder() {
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return new Builder();
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}
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private static Map<String, Tag> mappings = new LinkedHashMap<>();
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private static Tag addMapping(String key, String val) {
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Tag tag = new Tag(key, val);
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mappings.put(key + "=" + val, tag);
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return tag;
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}
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private final String locale;
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public MapzenGeojsonTileSource(Builder<?> builder) {
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super(builder);
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this.locale = builder.locale;
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}
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public MapzenGeojsonTileSource() {
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this(builder());
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}
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public MapzenGeojsonTileSource(String urlString) {
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this(builder().url(urlString));
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}
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@Override
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public void decodeTags(MapElement mapElement, Map<String, Object> properties) {
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boolean hasName = false;
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String fallbackName = null;
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for (Map.Entry<String, Object> entry : properties.entrySet()) {
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String key = entry.getKey();
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Object value = entry.getValue();
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String val = (value instanceof String) ? (String) value : String.valueOf(value);
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if (key.startsWith(Tag.KEY_NAME)) {
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int len = key.length();
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if (len == 4) {
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fallbackName = val;
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continue;
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}
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if (len < 7)
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continue;
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if (locale.equals(key.substring(5))) {
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hasName = true;
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mapElement.tags.add(new Tag(Tag.KEY_NAME, val, false));
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}
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continue;
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}
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Tag tag = mappings.get(key + "=" + val);
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if (tag == null)
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tag = addMapping(key, val);
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mapElement.tags.add(tag);
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}
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if (!hasName && fallbackName != null)
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mapElement.tags.add(new Tag(Tag.KEY_NAME, fallbackName, false));
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// Calculate height of building parts
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if (!properties.containsKey(Tag.KEY_HEIGHT)) {
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if (properties.containsKey(Tag.KEY_VOLUME) && properties.containsKey(Tag.KEY_AREA)) {
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Object volume = properties.get(Tag.KEY_VOLUME);
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String volumeStr = (volume instanceof String) ? (String) volume : String.valueOf(volume);
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Object area = properties.get(Tag.KEY_AREA);
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String areaStr = (area instanceof String) ? (String) area : String.valueOf(area);
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float height = Float.parseFloat(volumeStr) / Float.parseFloat(areaStr);
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String heightStr = String.valueOf(FastMath.round2(height));
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mapElement.tags.add(new Tag(Tag.KEY_HEIGHT, heightStr, false));
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}
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}
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}
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}
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