/* * Copyright 2010, 2011, 2012 mapsforge.org * * 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.mapsforge.android.maps.overlay; import org.mapsforge.core.model.BoundingBox; import android.graphics.Canvas; /** * An {@code Overlay} displays additional geographical data on top of a map. */ public interface Overlay { /** * Draws this {@code Overlay} on the given canvas. * * @param boundingBox * the geographical area which should be drawn. * @param zoomLevel * the zoom level at which this {@code Overlay} should draw itself. * @param canvas * the canvas on which this {@code Overlay} should draw itself. */ void draw(BoundingBox boundingBox, byte zoomLevel, Canvas canvas); }