RMTile.h
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//
// RMTile.h
//
// Copyright (c) 2008-2009, Route-Me Contributors
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
#ifndef _RMTILE_H_
#define _RMTILE_H_
#include <CoreGraphics/CGGeometry.h>
#include <stdint.h>
/*! \file RMTile.h
*/
/*! \struct RMTile
\brief Uniquely specifies coordinates and zoom level for a particular tile in some tile source.
This is a 3-field number. If you want the image associated with an RMTile, you're looking for RMTileImage
*/
typedef struct{
uint32_t x, y;
short zoom;
} RMTile;
/*! \struct RMTilePoint
*/
typedef struct{
RMTile tile;
CGPoint offset;
} RMTilePoint;
/*! \struct RMTileRect
*/
typedef struct{
RMTilePoint origin;
CGSize size;
} RMTileRect;
char RMTilesEqual(RMTile one, RMTile two);
char RMTileIsDummy(RMTile tile);
RMTile RMTileDummy();
RMTile RMTileMake(uint32_t x, uint32_t y, short zoom);
/// Return a hash of the tile, used to override the NSObject hash method for RMTile.
uint64_t RMTileHash(RMTile tile);
/// Returns a unique key of the tile for use in the SQLite cache
uint64_t RMTileKey(RMTile tile);
/// Round the rectangle to whole numbers of tiles
RMTileRect RMTileRectRound(RMTileRect rect);
/// Dump a description of the tile to the console
void RMLogTile(RMTile tile);
#endif