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//
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// RMTileStreamSource.h
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//
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// Created by Justin R. Miller on 5/17/11.
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// Copyright 2011, Development Seed, Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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//
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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//
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// * Neither the name of Development Seed, Inc., nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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// ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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#import "RMTileStreamSource.h"
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@interface RMTileStreamSource ()
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@property (nonatomic, retain) NSDictionary *infoDictionary;
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@end
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#pragma mark -
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@implementation RMTileStreamSource
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@synthesize infoDictionary;
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- (id)initWithInfo:(NSDictionary *)info
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{
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if (self = [super init])
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infoDictionary = [[NSDictionary dictionaryWithDictionary:info] retain];
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return self;
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}
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- (id)initWithReferenceURL:(NSURL *)referenceURL
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{
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return [self initWithInfo:[NSDictionary dictionaryWithContentsOfURL:referenceURL]];
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}
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- (void)dealloc
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{
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[infoDictionary release];
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[super dealloc];
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}
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#pragma mark
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- (NSURL *)URLForTile:(RMTile)tile
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{
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// flip y value per OSM-style
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//
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NSInteger zoom = tile.zoom;
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NSInteger x = tile.x;
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NSInteger y = pow(2, zoom) - tile.y - 1;
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NSString *tileURLString = [self.infoDictionary objectForKey:@"tileURL"];
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tileURLString = [tileURLString stringByReplacingOccurrencesOfString:@"{z}" withString:[[NSNumber numberWithInteger:zoom] stringValue]];
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tileURLString = [tileURLString stringByReplacingOccurrencesOfString:@"{x}" withString:[[NSNumber numberWithInteger:x] stringValue]];
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tileURLString = [tileURLString stringByReplacingOccurrencesOfString:@"{y}" withString:[[NSNumber numberWithInteger:y] stringValue]];
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return [NSURL URLWithString:tileURLString];
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}
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- (float)minZoom
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{
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return [[self.infoDictionary objectForKey:@"minzoom"] floatValue];
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}
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- (float)maxZoom
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{
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return [[self.infoDictionary objectForKey:@"maxzoom"] floatValue];
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}
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- (RMSphericalTrapezium)latitudeLongitudeBoundingBox
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{
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NSArray *parts = [[self.infoDictionary objectForKey:@"bounds"] componentsSeparatedByString:@","];
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if ([parts count] == 4)
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{
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RMSphericalTrapezium bounds = {
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.southWest = {
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.longitude = [[parts objectAtIndex:0] doubleValue],
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.latitude = [[parts objectAtIndex:1] doubleValue],
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},
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.northEast = {
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.longitude = [[parts objectAtIndex:2] doubleValue],
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.latitude = [[parts objectAtIndex:3] doubleValue],
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},
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};
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return bounds;
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}
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return kTileStreamDefaultLatLonBoundingBox;
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}
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//- (BOOL)coversFullWorld
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//{
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// RMSphericalTrapezium ownBounds = [self latitudeLongitudeBoundingBox];
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// RMSphericalTrapezium defaultBounds = kTileStreamDefaultLatLonBoundingBox;
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//
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// if (ownBounds.southwest.longitude <= defaultBounds.southwest.longitude + 10 &&
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// ownBounds.northeast.longitude >= defaultBounds.northeast.longitude - 10)
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// return YES;
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//
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// return NO;
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//}
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- (NSString *)uniqueTilecacheKey
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{
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return [NSString stringWithFormat:@"%@-%@", [self.infoDictionary objectForKey:@"id"], [self.infoDictionary objectForKey:@"version"]];
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}
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- (NSString *)shortName
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{
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return [self.infoDictionary objectForKey:@"name"];
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}
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- (NSString *)longDescription
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{
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return [self.infoDictionary objectForKey:@"description"];
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}
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- (NSString *)shortAttribution
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{
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return [self.infoDictionary objectForKey:@"attribution"];
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}
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- (NSString *)longAttribution
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{
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return [self shortAttribution];
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}
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- (NSString *)legend
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{
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return [self.infoDictionary objectForKey:@"legend"];
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}
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- (RMTileStreamLayerType)layerType
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{
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return ([[self.infoDictionary objectForKey:@"type"] isEqualToString:@"overlay"] ? RMTileStreamLayerTypeOverlay : RMTileStreamLayerTypeBaselayer);
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}
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@end
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//#pragma mark -
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//
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//@implementation RMCachedTileSource (RMTileStreamSourceExtensions)
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//
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//- (NSString *)legend
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//{
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// if ([tileSource isKindOfClass:[RMTileStreamSource class]])
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// return [(RMTileStreamSource *)tileSource legend];
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//
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// return nil;
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//}
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//
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//@end |
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\ No newline at end of file |
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