/*

    File: oalSpatialView.h

Abstract: A visual representation of our sound stage

 Version: 1.9

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 */

#import <UIKit/UIKit.h>

#import <QuartzCore/QuartzCore.h>

#import <MediaPlayer/MediaPlayer.h>

#define kTouchDistanceThreshhold 45.

// A function to bring an outlying point into the bounds of a rectangle,

// so that it is as close as possible to its original outlying position.

static inline CGPoint CGPointWithinBounds(CGPoint point, CGRect bounds)

{

    CGPoint ret = point;

    if (ret.x < CGRectGetMinX(bounds)) ret.x = CGRectGetMinX(bounds);

    else if (ret.x > CGRectGetMaxX(bounds)) ret.x = CGRectGetMaxX(bounds);

    if (ret.y < CGRectGetMinY(bounds)) ret.y = CGRectGetMinY(bounds);

    else if (ret.y > CGRectGetMaxY(bounds)) ret.y = CGRectGetMaxY(bounds);

    return ret;

}

@class oalPlayback;

@interface oalSpatialView : UIView

{

    // Reference to our playback object, wired up in IB

    IBOutlet oalPlayback        *playback;

    // Images for the speaker in its on and off state

    CGImageRef                  _speaker_off;

    CGImageRef                  _speaker_on;

    // Various layers we use to represent things in the sound stage

    CALayer                     *_draggingLayer;

    CALayer                     *_speakerLayer;

    CALayer                     *_listenerLayer;

    CALayer                     *_instructionsLayer;

}

- (void)initializeContents;

- (void)layoutContents;

@end