1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/EAGLView.m	Tue Sep 06 08:07:14 2011 +0300
     1.3 @@ -0,0 +1,150 @@
     1.4 +//
     1.5 +//  EAGLView.m
     1.6 +//  istereo
     1.7 +//
     1.8 +//  Created by nuclear on 9/6/11.
     1.9 +//  Copyright __MyCompanyName__ 2011. All rights reserved.
    1.10 +//
    1.11 +
    1.12 +#import "EAGLView.h"
    1.13 +
    1.14 +#import "ES1Renderer.h"
    1.15 +#import "ES2Renderer.h"
    1.16 +
    1.17 +@implementation EAGLView
    1.18 +
    1.19 +@synthesize animating;
    1.20 +@dynamic animationFrameInterval;
    1.21 +
    1.22 +// You must implement this method
    1.23 ++ (Class)layerClass
    1.24 +{
    1.25 +    return [CAEAGLLayer class];
    1.26 +}
    1.27 +
    1.28 +//The EAGL view is stored in the nib file. When it's unarchived it's sent -initWithCoder:
    1.29 +- (id)initWithCoder:(NSCoder*)coder
    1.30 +{    
    1.31 +    if ((self = [super initWithCoder:coder]))
    1.32 +    {
    1.33 +        // Get the layer
    1.34 +        CAEAGLLayer *eaglLayer = (CAEAGLLayer *)self.layer;
    1.35 +
    1.36 +        eaglLayer.opaque = TRUE;
    1.37 +        eaglLayer.drawableProperties = [NSDictionary dictionaryWithObjectsAndKeys:
    1.38 +                                        [NSNumber numberWithBool:FALSE], kEAGLDrawablePropertyRetainedBacking, kEAGLColorFormatRGBA8, kEAGLDrawablePropertyColorFormat, nil];
    1.39 +
    1.40 +        renderer = [[ES2Renderer alloc] init];
    1.41 +
    1.42 +        if (!renderer)
    1.43 +        {
    1.44 +            renderer = [[ES1Renderer alloc] init];
    1.45 +
    1.46 +            if (!renderer)
    1.47 +            {
    1.48 +                [self release];
    1.49 +                return nil;
    1.50 +            }
    1.51 +        }
    1.52 +
    1.53 +        animating = FALSE;
    1.54 +        displayLinkSupported = FALSE;
    1.55 +        animationFrameInterval = 1;
    1.56 +        displayLink = nil;
    1.57 +        animationTimer = nil;
    1.58 +
    1.59 +        // A system version of 3.1 or greater is required to use CADisplayLink. The NSTimer
    1.60 +        // class is used as fallback when it isn't available.
    1.61 +        NSString *reqSysVer = @"3.1";
    1.62 +        NSString *currSysVer = [[UIDevice currentDevice] systemVersion];
    1.63 +        if ([currSysVer compare:reqSysVer options:NSNumericSearch] != NSOrderedAscending)
    1.64 +            displayLinkSupported = TRUE;
    1.65 +    }
    1.66 +
    1.67 +    return self;
    1.68 +}
    1.69 +
    1.70 +- (void)drawView:(id)sender
    1.71 +{
    1.72 +    [renderer render];
    1.73 +}
    1.74 +
    1.75 +- (void)layoutSubviews
    1.76 +{
    1.77 +    [renderer resizeFromLayer:(CAEAGLLayer*)self.layer];
    1.78 +    [self drawView:nil];
    1.79 +}
    1.80 +
    1.81 +- (NSInteger)animationFrameInterval
    1.82 +{
    1.83 +    return animationFrameInterval;
    1.84 +}
    1.85 +
    1.86 +- (void)setAnimationFrameInterval:(NSInteger)frameInterval
    1.87 +{
    1.88 +    // Frame interval defines how many display frames must pass between each time the
    1.89 +    // display link fires. The display link will only fire 30 times a second when the
    1.90 +    // frame internal is two on a display that refreshes 60 times a second. The default
    1.91 +    // frame interval setting of one will fire 60 times a second when the display refreshes
    1.92 +    // at 60 times a second. A frame interval setting of less than one results in undefined
    1.93 +    // behavior.
    1.94 +    if (frameInterval >= 1)
    1.95 +    {
    1.96 +        animationFrameInterval = frameInterval;
    1.97 +
    1.98 +        if (animating)
    1.99 +        {
   1.100 +            [self stopAnimation];
   1.101 +            [self startAnimation];
   1.102 +        }
   1.103 +    }
   1.104 +}
   1.105 +
   1.106 +- (void)startAnimation
   1.107 +{
   1.108 +    if (!animating)
   1.109 +    {
   1.110 +        if (displayLinkSupported)
   1.111 +        {
   1.112 +            // CADisplayLink is API new to iPhone SDK 3.1. Compiling against earlier versions will result in a warning, but can be dismissed
   1.113 +            // if the system version runtime check for CADisplayLink exists in -initWithCoder:. The runtime check ensures this code will
   1.114 +            // not be called in system versions earlier than 3.1.
   1.115 +
   1.116 +            displayLink = [NSClassFromString(@"CADisplayLink") displayLinkWithTarget:self selector:@selector(drawView:)];
   1.117 +            [displayLink setFrameInterval:animationFrameInterval];
   1.118 +            [displayLink addToRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
   1.119 +        }
   1.120 +        else
   1.121 +            animationTimer = [NSTimer scheduledTimerWithTimeInterval:(NSTimeInterval)((1.0 / 60.0) * animationFrameInterval) target:self selector:@selector(drawView:) userInfo:nil repeats:TRUE];
   1.122 +
   1.123 +        animating = TRUE;
   1.124 +    }
   1.125 +}
   1.126 +
   1.127 +- (void)stopAnimation
   1.128 +{
   1.129 +    if (animating)
   1.130 +    {
   1.131 +        if (displayLinkSupported)
   1.132 +        {
   1.133 +            [displayLink invalidate];
   1.134 +            displayLink = nil;
   1.135 +        }
   1.136 +        else
   1.137 +        {
   1.138 +            [animationTimer invalidate];
   1.139 +            animationTimer = nil;
   1.140 +        }
   1.141 +
   1.142 +        animating = FALSE;
   1.143 +    }
   1.144 +}
   1.145 +
   1.146 +- (void)dealloc
   1.147 +{
   1.148 +    [renderer release];
   1.149 +
   1.150 +    [super dealloc];
   1.151 +}
   1.152 +
   1.153 +@end