TiledLayerController.m
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//
// ScreenProjection.m
// Images
//
// Created by Joseph Gentle on 28/08/08.
// Copyright 2008 __MyCompanyName__. All rights reserved.
//
#import "TiledLayerController.h"
#import "FractalTileProjection.h"
#import "TileSource.h"
@implementation TiledLayerController
@synthesize layer;
-(id) initWithTileSource: (id <TileSource>) _tileSource
{
if (![super init])
return nil;
tileSource = _tileSource;
[tileSource retain];
FractalTileProjection *tileProjection = [tileSource tileProjection];
layer = [CATiledLayer layer];
layer.delegate = self;
layer.levelsOfDetail = tileProjection.maxZoom + 1; // check this.
layer.levelsOfDetailBias = 1; // Allows zoom level 0.
layer.tileSize = CGSizeMake(tileProjection.tileSideLength,
tileProjection.tileSideLength);
layer.bounds = tileProjection.bounds;
layer.position = CGPointMake(0, 0);
[self setScale:1];
[layer setNeedsDisplay];
return self;
}
-(void) dealloc
{
layer.delegate = nil;
[layer release];
[super dealloc];
}
-(void) setScale: (float) _scale
{
scale = _scale;
layer.transform = CATransform3DMakeScale(1/scale,1/scale, 1.0f);
}
- (float) scale
{
return scale;
}
-(void) centerMercator: (MercatorPoint) point Animate: (BOOL) animate
{
if (animate == NO)
{
[CATransaction begin];
[CATransaction setValue:[NSNumber numberWithFloat:0.0f]
forKey:kCATransactionAnimationDuration];
}
// layer.position = CGPointMake(point.x, point.y);
if (animate == NO)
{
[CATransaction commit];
}
// topLeft = point;
// topLeft.x -= viewSize.width * scale / 2;
// topLeft.y -= viewSize.height * scale / 2;
}
-(void) centerLatLong: (CLLocationCoordinate2D) point Animate: (BOOL) animate
{
[self centerMercator:[Mercator toMercator:point] Animate: animate];
}
-(void) dragBy: (CGSize) delta
{
[CATransaction begin];
[CATransaction setValue:[NSNumber numberWithFloat:0.0f]
forKey:kCATransactionAnimationDuration];
layer.position = CGPointMake(layer.position.x + delta.width,
layer.position.y + delta.height);
[CATransaction commit];
}
-(void) zoomByFactor: (float) zoomFactor Near:(CGPoint) center
{
// NSLog(@"zoomBy: %f", zoomFactor);
/* topLeft.x += center.x * scale;
topLeft.y += (viewSize.height - center.y) * scale;
scale *= zoomFactor;
topLeft.x -= center.x * scale;
topLeft.y -= (viewSize.height - center.y) * scale;
*/
[self setScale: scale * zoomFactor];
}
- (void)drawLayer:(CALayer *)theLayer
inContext:(CGContextRef)theContext
{
NSLog(@"drawLayer:inContext:");
// CGRect visibleRect = [self visibleRect];
// NSLog(@"visibleRect: %d %d %d %d", visibleRect.origin.x, visibleRect.origin.y, visibleRect.size.width, visibleRect.size.height);
CGRect rect = CGContextGetClipBoundingBox(theContext);
// NSLog(@"rect: %d %d %d %d", rect.origin.x, rect.origin.y, rect.size.width, rect.size.height);
//CGAffineTransform transform = CGContextGetCTM(theContext);
// NSLog(@"transform scale: a:%f b:%f c:%f d:%f tx:%f ty:%f", transform.a, transform.b, transform.c, transform.d, transform.tx, transform.ty);
NSString *path = [[NSBundle mainBundle] pathForResource:@"loading" ofType:@"png"];
CGDataProviderRef dataProvider = CGDataProviderCreateWithFilename([path UTF8String]);
CGImageRef image = CGImageCreateWithPNGDataProvider(dataProvider, NULL, FALSE, kCGRenderingIntentDefault);
CGContextDrawImage(theContext, rect, image);
}
/*
-(CGPoint) projectMercatorPoint: (MercatorPoint) mercator
{
CGPoint point;
point.x = (mercator.x - topLeft.x) / scale;
point.y = -(mercator.y - topLeft.y) / scale;
return point;
}
-(CGRect) projectMercatorRect: (MercatorRect) mercator
{
CGRect rect;
rect.origin = [self projectMercatorPoint: mercator.origin];
mercator.size.width = rect.size.width / scale;
mercator.size.height = rect.size.height / scale;
return rect;
}
-(MercatorPoint) projectInversePoint: (CGPoint) point
{
MercatorPoint mercator;
mercator.x = (scale * point.x) + topLeft.x;
mercator.y = -(scale * point.y) + topLeft.y;
return mercator;
}
-(MercatorRect) projectInverseRect: (CGRect) rect
{
MercatorRect mercator;
mercator.origin = [self projectInversePoint: rect.origin];
mercator.size.width = rect.size.width * scale;
mercator.size.height = rect.size.height * scale;
return mercator;
}
-(MercatorRect) bounds
{
MercatorRect rect;
rect.origin = topLeft;
rect.size.width = viewSize.width * scale;
rect.size.height = viewSize.height * scale;
return rect;
}*/
@end