nhisyam · April 19, 2012 02:05 · Apr 19, 2012 · Apr 19, 2012
diff --git a/ColorDetect.m b/ColorDetect.m
@@ -1,4 +1,3 @@
-
 #import "ColorDetectVC.h"
 
 @interface ColorDetectVC ()
@@ -82,15 +81,13 @@ - (void)newImageFrameAvailableFromDataSource:(GPUImageRawData *)rawDataSource;
 		[_centerView setFrame:rect];
 
 		GPUByteColorVector colorVector = [rawDataSource colorAtLocation:centerPosition];
+		float red = (float)colorVector.red;
+		float green = (float)colorVector.green;
+		float blue = (float)colorVector.blue;
+		float alpha = (float)colorVector.alpha;
 
-		int red = [[NSNumber numberWithUnsignedChar:colorVector.red] intValue]; 
-		int green = [[NSNumber numberWithUnsignedChar:colorVector.green] intValue];
-		int blue = [[NSNumber numberWithUnsignedChar:colorVector.blue] intValue];
-		int alpha = [[NSNumber numberWithUnsignedChar:colorVector.alpha] intValue];
-
-		NSLog(@"R:%d G:%d B:%d A:%d",red, green, blue, alpha);
-
-		UIColor *color = [UIColor colorWithRed:red green:green blue:blue alpha:alpha];
+		NSLog(@"R:%f G:%f B:%f A:%f",red, green, blue, alpha);		
+		UIColor *color = [UIColor colorWithRed:red/255.0 green:green/255.0 blue:blue/255.0 alpha:alpha/255.0];
 		[_centerView setBackgroundColor:color];
 	}
 }
diff --git a/ColorDetect.m b/ColorDetect.m
@@ -0,0 +1,96 @@
+
+#import "ColorDetectVC.h"
+
+@interface ColorDetectVC ()
+{
+	GPUImageVideoCamera *videoCamera;
+	GPUImageFilter *rotationFilter;
+	GPUImageView *filteredVideoView;
+	GPUImageRawData *positionRawData;
+}
+@end
+
+@implementation ColorDetectVC
+@synthesize centerView = _centerView;
+
+- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
+{
+    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
+    if (self) {
+        // Custom initialization
+    }
+    return self;
+}
+
+- (void)viewDidLoad
+{
+    [super viewDidLoad];
+    // Do any additional setup after loading the view from its nib.
+
+	[self configureVideoFiltering:AVCaptureDevicePositionBack];
+
+}
+
+- (void)viewDidUnload
+{
+	[self setCenterView:nil];
+    [super viewDidUnload];
+    // Release any retained subviews of the main view.
+    // e.g. self.myOutlet = nil;
+}
+
+- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
+{
+    return (interfaceOrientation == UIInterfaceOrientationPortrait);
+}
+
+- (void)configureVideoFiltering:(AVCaptureDevicePosition)devicePosition
+{
+	CGRect mainScreenFrame = [[UIScreen mainScreen] applicationFrame];	
+    videoCamera = [[GPUImageVideoCamera alloc] initWithSessionPreset:AVCaptureSessionPreset640x480 cameraPosition:devicePosition];
+
+	filteredVideoView = [[GPUImageView alloc] initWithFrame:CGRectMake(0.0, 0.0, mainScreenFrame.size.width, mainScreenFrame.size.height)];
+    [self.view addSubview:filteredVideoView];
+	[self.view sendSubviewToBack:filteredVideoView];
+
+	rotationFilter = [[GPUImageRotationFilter alloc] initWithRotation:kGPUImageRotateRight];
+
+	CGSize videoPixelSize = CGSizeMake(480.0, 640.0);
+	positionRawData = [[GPUImageRawData alloc] initWithImageSize:videoPixelSize];
+    positionRawData.delegate = self;
+
+
+	[videoCamera addTarget:rotationFilter];
+	[rotationFilter addTarget:positionRawData];
+	[rotationFilter addTarget:filteredVideoView];
+
+	[videoCamera startCameraCapture];
+}
+
+#pragma mark - GPUImageRawDataProcessor
+
+- (void)newImageFrameAvailableFromDataSource:(GPUImageRawData *)rawDataSource;
+{
+	if (rawDataSource == positionRawData)
+    {
+		CGRect mainScreenFrame = [[UIScreen mainScreen] applicationFrame];
+		CGPoint centerPosition = CGPointMake(CGRectGetMidX(mainScreenFrame), CGRectGetMidY(mainScreenFrame));
+
+		CGRect rect = _centerView.frame;
+		rect.origin.x = centerPosition.x;
+		rect.origin.y = centerPosition.y;
+		[_centerView setFrame:rect];
+
+		GPUByteColorVector colorVector = [rawDataSource colorAtLocation:centerPosition];
+
+		int red = [[NSNumber numberWithUnsignedChar:colorVector.red] intValue]; 
+		int green = [[NSNumber numberWithUnsignedChar:colorVector.green] intValue];
+		int blue = [[NSNumber numberWithUnsignedChar:colorVector.blue] intValue];
+		int alpha = [[NSNumber numberWithUnsignedChar:colorVector.alpha] intValue];
+
+		NSLog(@"R:%d G:%d B:%d A:%d",red, green, blue, alpha);
+
+		UIColor *color = [UIColor colorWithRed:red green:green blue:blue alpha:alpha];
+		[_centerView setBackgroundColor:color];
+	}
+}