org.opentripplanner.ext.debugrastertiles.api.resource.DebugRasterTileResource Maven / Gradle / Ivy
package org.opentripplanner.ext.debugrastertiles.api.resource;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;
import jakarta.ws.rs.PathParam;
import jakarta.ws.rs.Produces;
import jakarta.ws.rs.core.CacheControl;
import jakarta.ws.rs.core.Context;
import jakarta.ws.rs.core.MediaType;
import jakarta.ws.rs.core.Response;
import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import javax.imageio.ImageIO;
import org.locationtech.jts.geom.Envelope;
import org.opentripplanner.api.parameter.MIMEImageFormat;
import org.opentripplanner.api.resource.WebMercatorTile;
import org.opentripplanner.ext.debugrastertiles.MapTile;
import org.opentripplanner.ext.debugrastertiles.TileRenderer;
import org.opentripplanner.ext.debugrastertiles.TileRendererManager;
import org.opentripplanner.standalone.api.OtpServerRequestContext;
/**
* Slippy raster map tile API for rendering various graph information for inspection/debugging
* purpose (bike safety factor, connectivity...). Vector tile alternatives should be preferably used
* instead.
*
* Tile rendering goes through TileRendererManager which select the appropriate renderer for the
* given layer.
*
* @author laurent
* @see TileRendererManager
* @see TileRenderer
*/
@Path("/debugrastertiles")
public class DebugRasterTileResource {
private final TileRendererManager tileRendererManager;
public DebugRasterTileResource(@Context OtpServerRequestContext serverContext) {
this.tileRendererManager = new TileRendererManager(
serverContext.graph(),
serverContext.defaultRouteRequest().preferences().wheelchair()
);
}
@GET
@Path("/{layer}/{z}/{x}/{y}.{ext}")
@Produces("image/*")
public Response tileGet(
@PathParam("x") int x,
@PathParam("y") int y,
@PathParam("z") int z,
@PathParam("layer") String layer,
@PathParam("ext") String ext
) throws Exception {
// Re-use analyst
Envelope env = WebMercatorTile.tile2Envelope(x, y, z);
MapTile mapTile = new MapTile(env, 256, 256);
BufferedImage image = tileRendererManager.renderTile(mapTile, layer);
MIMEImageFormat format = new MIMEImageFormat("image/" + ext);
ByteArrayOutputStream baos = new ByteArrayOutputStream(
(image.getWidth() * image.getHeight()) / 4
);
ImageIO.write(image, format.type, baos);
CacheControl cc = new CacheControl();
cc.setMaxAge(3600);
cc.setNoCache(false);
return Response.ok(baos.toByteArray()).type(format.toString()).cacheControl(cc).build();
}
/**
* Returns all layers.
*
* Used in the classic debug client to create a layer menu.
*/
@GET
@Path("layers")
@Produces(MediaType.APPLICATION_JSON)
public DebugLayersList getLayers() {
return new DebugLayersList(tileRendererManager.getRenderers());
}
}