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new BitmapTileLayer implementation

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This commit is contained in:
Hannes Janetzek
2014-01-21 02:49:49 +01:00
parent 6e543303c6
commit 9baf5b2b6e
20 changed files with 292 additions and 988 deletions
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6
vtm-gdx-html/src/org/oscim/gdx/client/GwtGdxMap.java
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@@ -22,10 +22,10 @@ import org.oscim.backend.GLAdapter;
import org.oscim.core.MapPosition;
import org.oscim.core.MercatorProjection;
import org.oscim.gdx.GdxMap;
import org.oscim.layers.tile.bitmap.BitmapTileLayer;
import org.oscim.layers.tile.bitmap.NaturalEarth;
import org.oscim.layers.tile.BitmapTileLayer;
import org.oscim.renderer.MapRenderer;
import org.oscim.tiling.source.TileSource;
import org.oscim.tiling.source.bitmap.DefaultSources.NaturalEarth;
import org.oscim.tiling.source.oscimap2.OSciMap2TileSource;
import org.oscim.tiling.source.oscimap4.OSciMap4TileSource;
import org.slf4j.Logger;
@@ -116,7 +116,7 @@ class GwtGdxMap extends GdxMap {
initDefaultLayers(tileSource, false, true, true);
if ("naturalearth".equals(c.getBackgroundLayer()))
mMap.setBackgroundMap(new BitmapTileLayer(mMap, NaturalEarth.INSTANCE));
mMap.setBackgroundMap(new BitmapTileLayer(mMap, new NaturalEarth()));
mSearchBox = new SearchBox(mMap);

137
vtm-gdx-html/src/org/oscim/gdx/emu/org/oscim/layers/tile/bitmap/BitmapTileLayer.java
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@@ -1,137 +0,0 @@
/*
* Copyright 2013 Hannes Janetzek
*
* This program is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.oscim.layers.tile.bitmap;
import java.net.URL;
import org.oscim.backend.canvas.Bitmap;
import org.oscim.core.MapPosition;
import org.oscim.core.Tile;
import org.oscim.gdx.client.GwtBitmap;
import org.oscim.layers.tile.TileLayer;
import org.oscim.layers.tile.bitmap.TileSource.FadeStep;
import org.oscim.map.Map;
import org.oscim.renderer.elements.BitmapLayer;
import org.oscim.renderer.elements.ElementLayers;
import org.oscim.tiling.MapTile;
import org.oscim.tiling.TileLoader;
import org.oscim.tiling.TileManager;
import org.oscim.utils.FastMath;
import com.google.gwt.event.dom.client.ErrorEvent;
import com.google.gwt.event.dom.client.ErrorHandler;
import com.google.gwt.event.dom.client.LoadEvent;
import com.google.gwt.event.dom.client.LoadHandler;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.RootPanel;
public class BitmapTileLayer extends TileLayer<TileLoader> {
private final static int CACHE_LIMIT = 50;
final TileSource mTileSource;
private final FadeStep[] mFade;
public BitmapTileLayer(Map map, TileSource tileSource) {
this(map, tileSource, CACHE_LIMIT);
}
public BitmapTileLayer(Map map, TileSource tileSource, int cacheLimit) {
super(map, tileSource.getZoomLevelMin(), tileSource.getZoomLevelMax(), cacheLimit);
mTileSource = tileSource;
mFade = mTileSource.getFadeSteps();
}
@Override
public void onMapUpdate(MapPosition pos, boolean changed, boolean clear) {
super.onMapUpdate(pos, changed, clear);
if (mFade == null) {
mRenderLayer.setBitmapAlpha(1);
return;
}
float alpha = 0;
for (FadeStep f : mFade) {
if (pos.scale < f.scaleStart || pos.scale > f.scaleEnd)
continue;
if (f.alphaStart == f.alphaEnd) {
alpha = f.alphaStart;
break;
}
double range = f.scaleEnd / f.scaleStart;
float a = (float) ((range - (pos.scale / f.scaleStart)) / range);
a = FastMath.clamp(a, 0, 1);
// interpolate alpha between start and end
alpha = a * f.alphaStart + (1 - a) * f.alphaEnd;
break;
}
mRenderLayer.setBitmapAlpha(alpha);
}
@Override
protected TileLoader createLoader(TileManager tm) {
return new TileLoader(tm) {
private void loadImage(final MapTile tile, final String url) {
final Image img = new Image(url);
RootPanel.get().add(img);
img.setVisible(false);
img.addLoadHandler(new LoadHandler() {
public void onLoad(LoadEvent event) {
Bitmap bitmap = new GwtBitmap(img);
tile.layers = new ElementLayers();
BitmapLayer l = new BitmapLayer(false);
l.setBitmap(bitmap, Tile.SIZE, Tile.SIZE);
tile.layers.textureLayers = l;
tile.loader.jobCompleted(tile, true);
}
});
img.addErrorHandler(new ErrorHandler() {
@Override
public void onError(ErrorEvent event) {
tile.loader.jobCompleted(tile, false);
}
});
}
@Override
protected boolean executeJob(MapTile tile) {
URL url;
try {
url = mTileSource.getTileUrl(tile);
loadImage(tile, url.toString());
} catch (Exception e) {
e.printStackTrace();
tile.loader.jobCompleted(tile, false);
return false;
}
return false;
}
@Override
public void cleanup() {
}
};
}
}