/MapView/Map/RMMercatorToTileProjection.h
C Header | 67 lines | 21 code | 13 blank | 33 comment | 0 complexity | d728df593ba183eaefe0d2203861f6ae MD5 | raw file
- //
- // RMMercatorToTileProjection.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.
- #import <Foundation/Foundation.h>
- #import "RMFoundation.h"
- #import "RMTile.h"
- #import "RMMercatorToTileProjection.h"
- @class RMMercatorToScreenProjection;
- /// A tile projection is a projection which turns mercators into tile coordinates.
- /// At time of writing, read RMFractalTileProjection to see the implementation of this.
- @protocol RMMercatorToTileProjection<NSObject>
- -(RMTilePoint) project: (RMProjectedPoint)aPoint atZoom:(float)zoom;
- -(RMTileRect) projectRect: (RMProjectedRect)aRect atZoom:(float)zoom;
- -(RMTilePoint) project: (RMProjectedPoint)aPoint atScale:(float)scale;
- -(RMTileRect) projectRect: (RMProjectedRect)aRect atScale:(float)scale;
- /// This is a helper for projectRect above. Much simpler for the caller.
- -(RMTileRect) project: (RMMercatorToScreenProjection*)screen;
- -(RMTile) normaliseTile: (RMTile) tile;
- -(float) normaliseZoom: (float) zoom;
- -(float) calculateZoomFromScale: (float) scale;
- -(float) calculateNormalisedZoomFromScale: (float) scale;
- -(float) calculateScaleFromZoom: (float) zoom;
- /// bounds of the earth, in projected units (meters).
- @property(readonly, nonatomic) RMProjectedRect planetBounds;
- /// Maximum zoom for which we have tile images
- @property(readonly, nonatomic) NSUInteger maxZoom;
- /// Minimum zoom for which we have tile images
- @property(readonly, nonatomic) NSUInteger minZoom;
- /// Tile side length in pixels
- @property(readonly, nonatomic) NSUInteger tileSideLength;
- @end