added flash and torch mode to CaptureSession

Examples/Programmatic/CaptureView/CaptureView/Assets.xcassets/Contents.json

+{
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}
\ No newline at end of file

Examples/Programmatic/CaptureView/CaptureView/Assets.xcassets/ic_flash_auto_white.imageset/Contents.json

+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "ic_flash_auto_white.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "ic_flash_auto_white@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "ic_flash_auto_white@3x.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}
\ No newline at end of file

Examples/Programmatic/CaptureView/CaptureView/Assets.xcassets/ic_flash_off_white.imageset/Contents.json

+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "ic_flash_off_white.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "ic_flash_off_white@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "ic_flash_off_white@3x.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}
\ No newline at end of file

Examples/Programmatic/CaptureView/CaptureView/Assets.xcassets/ic_flash_on_white.imageset/Contents.json

+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "ic_flash_on_white.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "ic_flash_on_white@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "ic_flash_on_white@3x.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}
\ No newline at end of file

Sources/CapturePreviewView.swift

@@ -204,6 +204,7 @@ public class CapturePreviewView : MaterialView, UIGestureRecognizerDelegate {
 	*/
 	internal func handleTapToResetGesture(recognizer: UITapGestureRecognizer) {
 		if tapToResetEnabled {
+			captureSession.resetFocusAndExposureModes()
 			(delegate as? CapturePreviewViewDelegate)?.capturePreviewViewDidTapToResetAtPoint?(self, point: pointForCaptureDevicePointOfInterest(CGPointMake(0.5, 0.5)))
 		}
 	}

Sources/CaptureSession.swift

@@ -129,14 +129,28 @@ public class CaptureSession : NSObject {
 	:name:	caneraSupportsTapToFocus
 	*/
 	public var cameraSupportsTapToFocus: Bool {
-		return true == activeCamera?.focusPointOfInterestSupported
+		return activeCamera!.focusPointOfInterestSupported
 	}
 	
 	/**
 	:name:	cameraSupportsTapToExpose
 	*/
 	public var cameraSupportsTapToExpose: Bool {
-		return true == activeCamera?.exposurePointOfInterestSupported
+		return activeCamera!.exposurePointOfInterestSupported
+	}
+	
+	/**
+	:name:	cameraHasFlash
+	*/
+	public var cameraHasFlash: Bool {
+		return activeCamera!.hasFlash
+	}
+	
+	/**
+	:name:	cameraHasTorch
+	*/
+	public var cameraHasTorch: Bool {
+		return activeCamera!.hasTorch
 	}
 	
 	/**
@@ -167,6 +181,60 @@ public class CaptureSession : NSObject {
 	}
 	
 	/**
+	:name:	flashMode
+	*/
+	public var flashMode: AVCaptureFlashMode {
+		get {
+			return activeCamera!.flashMode
+		}
+		set(value) {
+			var error: NSError?
+			if isFlashModeSupported(flashMode) {
+				do {
+					let device: AVCaptureDevice = activeCamera!
+					try device.lockForConfiguration()
+					device.flashMode = flashMode
+					device.unlockForConfiguration()
+				} catch let e as NSError {
+					error = e
+				}
+			} else {
+				error = NSError(domain: "[MaterialKit Error: Unsupported flashMode.]", code: 0, userInfo: nil)
+			}
+			if let e: NSError = error {
+				delegate?.captureSessionFailedWithError?(self, error: e)
+			}
+		}
+	}
+	
+	/**
+	:name:	torchMode
+	*/
+	public var torchMode: AVCaptureTorchMode {
+		get {
+			return activeCamera!.torchMode
+		}
+		set(value) {
+			var error: NSError?
+			if isTorchModeSupported(torchMode) {
+				do {
+					let device: AVCaptureDevice = activeCamera!
+					try device.lockForConfiguration()
+					device.torchMode = torchMode
+					device.unlockForConfiguration()
+				} catch let e as NSError {
+					error = e
+				}
+			} else {
+				error = NSError(domain: "[MaterialKit Error: Unsupported torchMode.]", code: 0, userInfo: nil)
+			}
+			if let e: NSError = error {
+				delegate?.captureSessionFailedWithError?(self, error: e)
+			}
+		}
+	}
+	
+	/**
 	:name:	sessionPreset
 	*/
 	public var sessionPreset: CaptureSessionPreset {
@@ -242,6 +310,20 @@ public class CaptureSession : NSObject {
 	}
 	
 	/**
+	:name:	isFlashModeSupported
+	*/
+	public func isFlashModeSupported(flashMode: AVCaptureFlashMode) -> Bool {
+		return activeVideoInput!.device.isFlashModeSupported(flashMode)
+	}
+	
+	/**
+	:name:	isTorchModeSupported
+	*/
+	public func isTorchModeSupported(torchMode: AVCaptureTorchMode) -> Bool {
+		return activeVideoInput!.device.isTorchModeSupported(torchMode)
+	}
+	
+	/**
 	:name:	focusAtPoint
 	*/
 	public func focusAtPoint(point: CGPoint) {