573 lines
14 KiB
Java
573 lines
14 KiB
Java
/*
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* Copyright 2012 Hannes Janetzek
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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.renderer;
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import static org.oscim.generator.JobTile.STATE_NONE;
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import org.oscim.core.MercatorProjection;
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import org.oscim.core.Tag;
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import org.oscim.core.Tile;
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import org.oscim.core.WebMercator;
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import org.oscim.database.IMapDatabase;
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import org.oscim.database.IMapDatabaseCallback;
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import org.oscim.database.QueryResult;
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import org.oscim.generator.JobTile;
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import org.oscim.renderer.layer.Layer;
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import org.oscim.renderer.layer.Layers;
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import org.oscim.renderer.layer.LineLayer;
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import org.oscim.renderer.layer.PolygonLayer;
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import org.oscim.renderer.layer.TextItem;
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import org.oscim.theme.IRenderCallback;
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import org.oscim.theme.RenderTheme;
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import org.oscim.theme.renderinstruction.Area;
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import org.oscim.theme.renderinstruction.Line;
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import org.oscim.theme.renderinstruction.RenderInstruction;
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import org.oscim.theme.renderinstruction.Text;
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import org.oscim.view.DebugSettings;
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import org.oscim.view.MapView;
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import android.graphics.Bitmap;
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import android.graphics.Paint;
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import android.util.Log;
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/**
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*
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*/
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public class TileGenerator implements IRenderCallback, IMapDatabaseCallback {
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private static String TAG = TileGenerator.class.getName();
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private static final double PI180 = (Math.PI / 180) / 1000000.0;
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private static final double PIx4 = Math.PI * 4;
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private static final double STROKE_INCREASE = Math.sqrt(2);
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private static final byte LAYERS = 11;
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static final byte STROKE_MIN_ZOOM_LEVEL = 12;
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static final byte STROKE_MAX_ZOOM_LEVEL = 17;
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private static RenderTheme renderTheme;
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private IMapDatabase mMapDatabase;
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private MapTile mCurrentTile;
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// coordinates of the currently processed way
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private float[] mCoords;
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private short[] mIndices;
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// current line layer, will be added to outline layers
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private LineLayer mCurLineLayer;
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// layer data prepared for rendering
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private Layers mLayers;
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private TextItem mLabels;
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private int mDrawingLayer;
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private int mLevels;
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private float mStrokeScale = 1.0f;
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private boolean mProjected;
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private float mSimplify;
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private RenderInstruction[] mRenderInstructions = null;
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private final String TAG_WATER = "water".intern();
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private final MapView mMapView;
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private final Tag[] debugTagBox = { new Tag("debug", "box") };
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private final Tag[] debugTagWay = { new Tag("debug", "way") };
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private final Tag[] debugTagArea = { new Tag("debug", "area") };
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private final float[] debugBoxCoords = { 0, 0, 0, Tile.TILE_SIZE,
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Tile.TILE_SIZE, Tile.TILE_SIZE, Tile.TILE_SIZE, 0, 0, 0 };
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private final short[] debugBoxIndex = { 10 };
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private float mProjectionScaleFactor;
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public static void setRenderTheme(RenderTheme theme) {
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renderTheme = theme;
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}
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/**
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* @param mapView
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* the MapView
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*/
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public TileGenerator(MapView mapView) {
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Log.d(TAG, "init TileGenerator");
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mMapView = mapView;
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}
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private float mPoiX = 256;
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private float mPoiY = 256;
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private Tag mTagEmptyName = new Tag(Tag.TAG_KEY_NAME, null, false);
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private Tag mTagName;
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private void filterTags(Tag[] tags) {
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for (int i = 0; i < tags.length; i++) {
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// Log.d(TAG, "check tag: " + tags[i]);
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if (tags[i].key == Tag.TAG_KEY_NAME) {
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mTagName = tags[i];
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tags[i] = mTagEmptyName;
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}
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}
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}
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// private RenderInstruction[] mNodeRenderInstructions;
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@Override
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public void renderPointOfInterest(byte layer, Tag[] tags, float latitude,
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float longitude) {
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mTagName = null;
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if (mMapProjection != null) {
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long x = mCurrentTile.pixelX;
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long y = mCurrentTile.pixelY + Tile.TILE_SIZE;
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long z = Tile.TILE_SIZE << mCurrentTile.zoomLevel;
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double divx, divy;
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long dx = (x - (z >> 1));
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long dy = (y - (z >> 1));
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if (mMapProjection == WebMercator.NAME) {
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double div = WebMercator.f900913 / (z >> 1);
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// divy = f900913 / (z >> 1);
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mPoiX = (float) (longitude / div - dx);
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mPoiY = (float) (latitude / div + dy);
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} else {
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divx = 180000000.0 / (z >> 1);
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divy = z / PIx4;
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mPoiX = (float) (longitude / divx - dx);
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double sinLat = Math.sin(latitude * PI180);
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mPoiY = (float) (Math.log((1.0 + sinLat) / (1.0 - sinLat)) * divy + dy);
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// TODO remove this, only used for mapsforge maps
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if (mPoiX < -10 || mPoiX > Tile.TILE_SIZE + 10 || mPoiY < -10
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|| mPoiY > Tile.TILE_SIZE + 10)
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return;
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}
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} else {
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mPoiX = longitude;
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mPoiY = latitude;
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}
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// remove tags that should not be cached in Rendertheme
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filterTags(tags);
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// Log.d(TAG, "renderPointOfInterest: " + mTagName);
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// mNodeRenderInstructions =
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TileGenerator.renderTheme.matchNode(this, tags, mCurrentTile.zoomLevel);
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}
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@Override
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public void renderWaterBackground() {
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// TODO Auto-generated method stub
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}
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private boolean mClosed;
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@Override
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public void renderWay(byte layer, Tag[] tags, float[] coords, short[] indices,
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boolean closed) {
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mTagName = null;
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mProjected = false;
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mCurLineLayer = null;
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mClosed = closed;
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mDrawingLayer = getValidLayer(layer) * mLevels;
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mSimplify = 0.5f;
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if (closed) {
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if (mCurrentTile.zoomLevel < 14)
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mSimplify = 0.5f;
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else
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mSimplify = 0.2f;
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if (tags.length == 1 && TAG_WATER == (tags[0].value))
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mSimplify = 0;
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}
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mCoords = coords;
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mIndices = indices;
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// remove tags that should not be cached in Rendertheme
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filterTags(tags);
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// if (mRenderInstructions != null) {
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// for (int i = 0, n = mRenderInstructions.length; i < n; i++)
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// mRenderInstructions[i].renderWay(this, tags);
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// }
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mRenderInstructions = TileGenerator.renderTheme.matchWay(this, tags,
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(byte) (mCurrentTile.zoomLevel + 0),
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closed, true);
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if (mRenderInstructions == null && mDebugDrawUnmatched)
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debugUnmatched(closed, tags);
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}
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private void debugUnmatched(boolean closed, Tag[] tags) {
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Log.d(TAG, "way not matched: " + tags[0] + " "
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+ (tags.length > 1 ? tags[1] : "") + " " + closed);
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mTagName = new Tag("name", tags[0].key + ":" + tags[0].value, false);
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if (closed) {
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mRenderInstructions = TileGenerator.renderTheme.matchWay(this, debugTagArea,
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(byte) 0, true, true);
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} else {
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mRenderInstructions = TileGenerator.renderTheme.matchWay(this, debugTagWay,
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(byte) 0, true, true);
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}
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}
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@Override
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public void renderAreaCaption(Text text) {
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// Log.d(TAG, "renderAreaCaption: " + mTagName);
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if (mTagName == null)
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return;
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if (text.textKey == mTagEmptyName.key) {
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// TextItem t = new TextItem(mCoords[0], mCoords[1], mTagName.value,
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// text);
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TextItem t = TextItem.get().set(mCoords[0], mCoords[1], mTagName.value, text);
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t.next = mLabels;
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mLabels = t;
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}
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}
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@Override
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public void renderPointOfInterestCaption(Text text) {
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// Log.d(TAG, "renderPointOfInterestCaption: " + mPoiX + " " + mPoiY +
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// " " + mTagName);
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if (mTagName == null)
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return;
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if (text.textKey == mTagEmptyName.key) {
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TextItem t = TextItem.get().set(mPoiX, mPoiY, mTagName.value, text);
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// TextItem t = new TextItem(mPoiX, mPoiY, mTagName.value, text);
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t.next = mLabels;
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mLabels = t;
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}
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}
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@Override
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public void renderWayText(Text text) {
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// Log.d(TAG, "renderWayText: " + mTagName);
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if (mTagName == null)
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return;
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if (text.textKey == mTagEmptyName.key && mTagName.value != null) {
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mLabels = WayDecorator.renderText(mCoords, mTagName.value, text, 0,
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mIndices[0], mLabels);
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}
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}
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@Override
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public void renderAreaSymbol(Bitmap symbol) {
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// TODO Auto-generated method stub
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}
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@Override
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public void renderPointOfInterestCircle(float radius, Paint fill, int level) {
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// TODO Auto-generated method stub
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}
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@Override
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public void renderPointOfInterestSymbol(Bitmap bitmap) {
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// Log.d(TAG, "add symbol");
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// if (mLayers.textureLayers == null)
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// mLayers.textureLayers = new SymbolLayer();
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//
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// SymbolLayer sl = (SymbolLayer) mLayers.textureLayers;
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//
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// SymbolItem it = SymbolItem.get();
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// it.x = mPoiX;
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// it.y = mPoiY;
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// it.bitmap = bitmap;
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// it.billboard = true;
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//
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// sl.addSymbol(it);
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}
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@Override
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public void renderWay(Line line, int level) {
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projectToTile();
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if (line.outline && mCurLineLayer == null)
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return;
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int numLayer = (mDrawingLayer * 2) + level;
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LineLayer lineLayer = (LineLayer) mLayers.getLayer(numLayer, Layer.LINE);
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if (lineLayer == null)
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return;
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if (lineLayer.line == null) {
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lineLayer.line = line;
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float w = line.width;
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if (!line.fixed) {
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w *= mStrokeScale;
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w *= mProjectionScaleFactor;
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}
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lineLayer.width = w;
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}
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if (line.outline) {
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lineLayer.addOutline(mCurLineLayer);
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return;
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}
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mCurLineLayer = lineLayer;
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lineLayer.addLine(mCoords, mIndices, mClosed);
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}
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@Override
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public void renderArea(Area area, int level) {
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if (!mDebugDrawPolygons)
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return;
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if (!mProjected && !projectToTile())
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return;
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int numLayer = mDrawingLayer + level;
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PolygonLayer layer = (PolygonLayer) mLayers.getLayer(numLayer, Layer.POLYGON);
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if (layer == null)
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return;
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if (layer.area == null)
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layer.area = area;
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layer.addPolygon(mCoords, mIndices);
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}
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@Override
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public void renderWaySymbol(Bitmap symbol, boolean alignCenter, boolean repeat) {
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// TODO Auto-generated method stub
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}
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public void cleanup() {
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// TODO Auto-generated method stub
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}
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private boolean mDebugDrawPolygons;
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boolean mDebugDrawUnmatched;
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public boolean executeJob(JobTile jobTile) {
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MapTile tile;
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if (mMapDatabase == null)
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return false;
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tile = mCurrentTile = (MapTile) jobTile;
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DebugSettings debugSettings = mMapView.getDebugSettings();
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mDebugDrawPolygons = !debugSettings.mDisablePolygons;
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mDebugDrawUnmatched = debugSettings.mDrawUnmatchted;
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if (tile.layers != null) {
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// should be fixed now.
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Log.d(TAG, "XXX tile already loaded "
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+ tile + " " + tile.state);
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return false;
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}
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mLevels = TileGenerator.renderTheme.getLevels();
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// limit stroke scale at z=17
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// if (tile.zoomLevel < STROKE_MAX_ZOOM_LEVEL)
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setScaleStrokeWidth(tile.zoomLevel);
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// else
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// setScaleStrokeWidth(STROKE_MAX_ZOOM_LEVEL);
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// acount for area changes with latitude
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mProjectionScaleFactor = 0.5f + 0.5f * (
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(float) Math.sin(Math.abs(MercatorProjection
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.pixelYToLatitude(tile.pixelY, tile.zoomLevel)) * (Math.PI / 180)));
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mLayers = new Layers();
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if (mMapDatabase.executeQuery(tile, this) != QueryResult.SUCCESS) {
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//Log.d(TAG, "Failed loading: " + tile);
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mLayers.clear();
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mLayers = null;
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mLabels = null;
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mCurLineLayer = null;
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// FIXME add STATE_FAILED?
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tile.state = STATE_NONE;
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return false;
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}
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if (debugSettings.mDrawTileFrames) {
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mTagName = new Tag("name", tile.toString(), false);
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mPoiX = Tile.TILE_SIZE >> 1;
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mPoiY = 10;
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TileGenerator.renderTheme.matchNode(this, debugTagWay, (byte) 0);
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mIndices = debugBoxIndex;
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mCoords = debugBoxCoords;
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mDrawingLayer = 10 * mLevels;
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TileGenerator.renderTheme.matchWay(this, debugTagBox, (byte) 0, false, true);
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}
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tile.layers = mLayers;
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tile.labels = mLabels;
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mLayers = null;
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mLabels = null;
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mCurLineLayer = null;
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return true;
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}
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private static byte getValidLayer(byte layer) {
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if (layer < 0) {
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return 0;
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} else if (layer >= LAYERS) {
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return LAYERS - 1;
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} else {
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return layer;
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}
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}
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/**
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* Sets the scale stroke factor for the given zoom level.
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* @param zoomLevel
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* the zoom level for which the scale stroke factor should be
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* set.
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*/
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private void setScaleStrokeWidth(byte zoomLevel) {
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int zoomLevelDiff = Math.max(zoomLevel - STROKE_MIN_ZOOM_LEVEL, 0);
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mStrokeScale = (float) Math.pow(STROKE_INCREASE, zoomLevelDiff);
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if (mStrokeScale < 1)
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mStrokeScale = 1;
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}
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private String mMapProjection;
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public void setMapDatabase(IMapDatabase mapDatabase) {
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if (mMapDatabase != null)
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mMapDatabase.close();
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mMapDatabase = mapDatabase;
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mMapProjection = mMapDatabase.getMapProjection();
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}
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public IMapDatabase getMapDatabase() {
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return mMapDatabase;
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}
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@Override
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public boolean checkWay(Tag[] tags, boolean closed) {
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mRenderInstructions = TileGenerator.renderTheme.matchWay(this, tags,
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(byte) (mCurrentTile.zoomLevel + 0), closed, false);
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return mRenderInstructions != null;
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}
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// TODO move this to Projection classes
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private boolean projectToTile() {
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if (mProjected || mMapProjection == null)
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return true;
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boolean useWebMercator = false;
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if (mMapProjection == WebMercator.NAME)
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useWebMercator = true;
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float[] coords = mCoords;
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long x = mCurrentTile.pixelX;
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long y = mCurrentTile.pixelY + Tile.TILE_SIZE;
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long z = Tile.TILE_SIZE << mCurrentTile.zoomLevel;
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float min = mSimplify;
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double divx, divy = 0;
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long dx = (x - (z >> 1));
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long dy = (y - (z >> 1));
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if (useWebMercator) {
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divx = WebMercator.f900913 / (z >> 1);
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} else {
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divx = 180000000.0 / (z >> 1);
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divy = z / PIx4;
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}
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for (int pos = 0, outPos = 0, i = 0, m = mIndices.length; i < m; i++) {
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int len = mIndices[i];
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if (len == 0)
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continue;
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if (len < 0)
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break;
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int cnt = 0;
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float lat, lon, prevLon = 0, prevLat = 0;
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for (int end = pos + len; pos < end; pos += 2) {
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if (useWebMercator) {
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lon = (float) (coords[pos] / divx - dx);
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lat = (float) (coords[pos + 1] / divx + dy);
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} else {
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lon = (float) ((coords[pos]) / divx - dx);
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double sinLat = Math.sin(coords[pos + 1] * PI180);
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lat = (float) (Math.log((1.0 + sinLat) / (1.0 - sinLat)) * divy + dy);
|
|
}
|
|
|
|
if (cnt != 0) {
|
|
// drop small distance intermediate nodes
|
|
if (lat == prevLat && lon == prevLon)
|
|
continue;
|
|
|
|
if ((pos != end - 2) &&
|
|
!((lat > prevLat + min || lat < prevLat - min) ||
|
|
(lon > prevLon + min || lon < prevLon - min)))
|
|
continue;
|
|
}
|
|
coords[outPos++] = prevLon = lon;
|
|
coords[outPos++] = prevLat = lat;
|
|
|
|
cnt += 2;
|
|
}
|
|
|
|
mIndices[i] = (short) cnt;
|
|
}
|
|
mProjected = true;
|
|
// mProjectedResult = true;
|
|
return true;
|
|
}
|
|
}
|