//
//  RMMapLayer.m
//
// 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 "RMMapLayer.h"
#import "RMPixel.h"

@implementation RMMapLayer

@synthesize annotation;
@synthesize projectedLocation;
@synthesize enableDragging;
@synthesize enableRotation;
@synthesize userInfo;

- (id)init
{
	if (!(self = [super init]))
		return nil;

    self.annotation = nil;
    self.enableDragging = YES;
    self.enableRotation = YES;

	return self;
}

- (id)initWithLayer:(id)layer
{
    if (!(self = [super initWithLayer:layer]))
        return nil;

    self.annotation = nil;

    return self;
}

/// return nil for certain animation keys to block core animation
- (id <CAAction>)actionForKey:(NSString *)key
{
    if ([key isEqualToString:@"position"] || [key isEqualToString:@"bounds"])
        return nil;
    else
        return [super actionForKey:key];
}

- (void)moveBy:(CGSize)delta
{
    self.position = RMTranslateCGPointBy(self.position, delta);
}

- (void)zoomByFactor:(float)zoomFactor near:(CGPoint)pivot
{
    // a empty layer has size=(0,0) which cause divide by 0 if scaled
    if (self.bounds.size.width == 0.0 || self.bounds.size.height == 0.0)
        return;

    self.position = RMScaleCGPointAboutPoint(self.position, zoomFactor, pivot);
    self.bounds = RMScaleCGRectAboutPoint(self.bounds, zoomFactor, pivot);
}

@end