istereo
annotate src/EAGLView.m @ 0:1bb950d0976b
initial commit
| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Tue, 06 Sep 2011 08:07:14 +0300 |
| parents | |
| children | 8dd271942543 |
| rev | line source |
|---|---|
| nuclear@0 | 1 // |
| nuclear@0 | 2 // EAGLView.m |
| nuclear@0 | 3 // istereo |
| nuclear@0 | 4 // |
| nuclear@0 | 5 // Created by nuclear on 9/6/11. |
| nuclear@0 | 6 // Copyright __MyCompanyName__ 2011. All rights reserved. |
| nuclear@0 | 7 // |
| nuclear@0 | 8 |
| nuclear@0 | 9 #import "EAGLView.h" |
| nuclear@0 | 10 |
| nuclear@0 | 11 #import "ES1Renderer.h" |
| nuclear@0 | 12 #import "ES2Renderer.h" |
| nuclear@0 | 13 |
| nuclear@0 | 14 @implementation EAGLView |
| nuclear@0 | 15 |
| nuclear@0 | 16 @synthesize animating; |
| nuclear@0 | 17 @dynamic animationFrameInterval; |
| nuclear@0 | 18 |
| nuclear@0 | 19 // You must implement this method |
| nuclear@0 | 20 + (Class)layerClass |
| nuclear@0 | 21 { |
| nuclear@0 | 22 return [CAEAGLLayer class]; |
| nuclear@0 | 23 } |
| nuclear@0 | 24 |
| nuclear@0 | 25 //The EAGL view is stored in the nib file. When it's unarchived it's sent -initWithCoder: |
| nuclear@0 | 26 - (id)initWithCoder:(NSCoder*)coder |
| nuclear@0 | 27 { |
| nuclear@0 | 28 if ((self = [super initWithCoder:coder])) |
| nuclear@0 | 29 { |
| nuclear@0 | 30 // Get the layer |
| nuclear@0 | 31 CAEAGLLayer *eaglLayer = (CAEAGLLayer *)self.layer; |
| nuclear@0 | 32 |
| nuclear@0 | 33 eaglLayer.opaque = TRUE; |
| nuclear@0 | 34 eaglLayer.drawableProperties = [NSDictionary dictionaryWithObjectsAndKeys: |
| nuclear@0 | 35 [NSNumber numberWithBool:FALSE], kEAGLDrawablePropertyRetainedBacking, kEAGLColorFormatRGBA8, kEAGLDrawablePropertyColorFormat, nil]; |
| nuclear@0 | 36 |
| nuclear@0 | 37 renderer = [[ES2Renderer alloc] init]; |
| nuclear@0 | 38 |
| nuclear@0 | 39 if (!renderer) |
| nuclear@0 | 40 { |
| nuclear@0 | 41 renderer = [[ES1Renderer alloc] init]; |
| nuclear@0 | 42 |
| nuclear@0 | 43 if (!renderer) |
| nuclear@0 | 44 { |
| nuclear@0 | 45 [self release]; |
| nuclear@0 | 46 return nil; |
| nuclear@0 | 47 } |
| nuclear@0 | 48 } |
| nuclear@0 | 49 |
| nuclear@0 | 50 animating = FALSE; |
| nuclear@0 | 51 displayLinkSupported = FALSE; |
| nuclear@0 | 52 animationFrameInterval = 1; |
| nuclear@0 | 53 displayLink = nil; |
| nuclear@0 | 54 animationTimer = nil; |
| nuclear@0 | 55 |
| nuclear@0 | 56 // A system version of 3.1 or greater is required to use CADisplayLink. The NSTimer |
| nuclear@0 | 57 // class is used as fallback when it isn't available. |
| nuclear@0 | 58 NSString *reqSysVer = @"3.1"; |
| nuclear@0 | 59 NSString *currSysVer = [[UIDevice currentDevice] systemVersion]; |
| nuclear@0 | 60 if ([currSysVer compare:reqSysVer options:NSNumericSearch] != NSOrderedAscending) |
| nuclear@0 | 61 displayLinkSupported = TRUE; |
| nuclear@0 | 62 } |
| nuclear@0 | 63 |
| nuclear@0 | 64 return self; |
| nuclear@0 | 65 } |
| nuclear@0 | 66 |
| nuclear@0 | 67 - (void)drawView:(id)sender |
| nuclear@0 | 68 { |
| nuclear@0 | 69 [renderer render]; |
| nuclear@0 | 70 } |
| nuclear@0 | 71 |
| nuclear@0 | 72 - (void)layoutSubviews |
| nuclear@0 | 73 { |
| nuclear@0 | 74 [renderer resizeFromLayer:(CAEAGLLayer*)self.layer]; |
| nuclear@0 | 75 [self drawView:nil]; |
| nuclear@0 | 76 } |
| nuclear@0 | 77 |
| nuclear@0 | 78 - (NSInteger)animationFrameInterval |
| nuclear@0 | 79 { |
| nuclear@0 | 80 return animationFrameInterval; |
| nuclear@0 | 81 } |
| nuclear@0 | 82 |
| nuclear@0 | 83 - (void)setAnimationFrameInterval:(NSInteger)frameInterval |
| nuclear@0 | 84 { |
| nuclear@0 | 85 // Frame interval defines how many display frames must pass between each time the |
| nuclear@0 | 86 // display link fires. The display link will only fire 30 times a second when the |
| nuclear@0 | 87 // frame internal is two on a display that refreshes 60 times a second. The default |
| nuclear@0 | 88 // frame interval setting of one will fire 60 times a second when the display refreshes |
| nuclear@0 | 89 // at 60 times a second. A frame interval setting of less than one results in undefined |
| nuclear@0 | 90 // behavior. |
| nuclear@0 | 91 if (frameInterval >= 1) |
| nuclear@0 | 92 { |
| nuclear@0 | 93 animationFrameInterval = frameInterval; |
| nuclear@0 | 94 |
| nuclear@0 | 95 if (animating) |
| nuclear@0 | 96 { |
| nuclear@0 | 97 [self stopAnimation]; |
| nuclear@0 | 98 [self startAnimation]; |
| nuclear@0 | 99 } |
| nuclear@0 | 100 } |
| nuclear@0 | 101 } |
| nuclear@0 | 102 |
| nuclear@0 | 103 - (void)startAnimation |
| nuclear@0 | 104 { |
| nuclear@0 | 105 if (!animating) |
| nuclear@0 | 106 { |
| nuclear@0 | 107 if (displayLinkSupported) |
| nuclear@0 | 108 { |
| nuclear@0 | 109 // CADisplayLink is API new to iPhone SDK 3.1. Compiling against earlier versions will result in a warning, but can be dismissed |
| nuclear@0 | 110 // if the system version runtime check for CADisplayLink exists in -initWithCoder:. The runtime check ensures this code will |
| nuclear@0 | 111 // not be called in system versions earlier than 3.1. |
| nuclear@0 | 112 |
| nuclear@0 | 113 displayLink = [NSClassFromString(@"CADisplayLink") displayLinkWithTarget:self selector:@selector(drawView:)]; |
| nuclear@0 | 114 [displayLink setFrameInterval:animationFrameInterval]; |
| nuclear@0 | 115 [displayLink addToRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode]; |
| nuclear@0 | 116 } |
| nuclear@0 | 117 else |
| nuclear@0 | 118 animationTimer = [NSTimer scheduledTimerWithTimeInterval:(NSTimeInterval)((1.0 / 60.0) * animationFrameInterval) target:self selector:@selector(drawView:) userInfo:nil repeats:TRUE]; |
| nuclear@0 | 119 |
| nuclear@0 | 120 animating = TRUE; |
| nuclear@0 | 121 } |
| nuclear@0 | 122 } |
| nuclear@0 | 123 |
| nuclear@0 | 124 - (void)stopAnimation |
| nuclear@0 | 125 { |
| nuclear@0 | 126 if (animating) |
| nuclear@0 | 127 { |
| nuclear@0 | 128 if (displayLinkSupported) |
| nuclear@0 | 129 { |
| nuclear@0 | 130 [displayLink invalidate]; |
| nuclear@0 | 131 displayLink = nil; |
| nuclear@0 | 132 } |
| nuclear@0 | 133 else |
| nuclear@0 | 134 { |
| nuclear@0 | 135 [animationTimer invalidate]; |
| nuclear@0 | 136 animationTimer = nil; |
| nuclear@0 | 137 } |
| nuclear@0 | 138 |
| nuclear@0 | 139 animating = FALSE; |
| nuclear@0 | 140 } |
| nuclear@0 | 141 } |
| nuclear@0 | 142 |
| nuclear@0 | 143 - (void)dealloc |
| nuclear@0 | 144 { |
| nuclear@0 | 145 [renderer release]; |
| nuclear@0 | 146 |
| nuclear@0 | 147 [super dealloc]; |
| nuclear@0 | 148 } |
| nuclear@0 | 149 |
| nuclear@0 | 150 @end |