Completed Leap Motion example. Added a chessboard rendering example, …

…although it isn't fully functional.

OculusRiftSceneKitView.h

@@ -11,5 +11,6 @@
 @property(readwrite, nonatomic) SCNVector3 headLocation;
 
 - (CVReturn)renderTime:(const CVTimeStamp *)timeStamp;
+- (void)setBackgroundColorRed:(CGFloat)redComponent green:(CGFloat)greenComponent blue:(CGFloat)blueComponent alpha:(CGFloat)alphaComponent;
 
 @end

OculusRiftSceneKitView.m

@@ -90,6 +90,8 @@ @interface OculusRiftSceneKitView()
     SCNNode *leftEyeCameraNode, *rightEyeCameraNode;
     SCNNode *headRotationNode, *headPositionNode;
 
+    CGFloat redBackgroundComponent, blueBackgroundComponent, greenBackgroundComponent, alphaBackgroundComponent;
+
     OculusRiftDevice *oculusRiftDevice;
 }
 
@@ -182,6 +184,11 @@ - (void)commonInit;
     _interpupillaryDistance = 64.0;
     _headLocation = SCNVector3Make(0.0, 0.0, 200.0);
 
+    redBackgroundComponent = 0.0;
+    greenBackgroundComponent = 0.0;
+    blueBackgroundComponent = 1.0;
+    alphaBackgroundComponent = 1.0;
+
     CGDirectDisplayID   displayID = CGMainDisplayID();
     CVReturn            error = kCVReturnSuccess;
     error = CVDisplayLinkCreateWithCGDisplay(displayID, &displayLink);
@@ -326,7 +333,7 @@ - (void)renderStereoscopicScene;
     glBindRenderbuffer(GL_RENDERBUFFER, 0);    
     glViewport(0, 0, (GLint)self.bounds.size.width, (GLint)self.bounds.size.height);
 
-    glClearColor(0.0, 1.0, 0.0, 1.0);
+    glClearColor(redBackgroundComponent, greenBackgroundComponent, blueBackgroundComponent, alphaBackgroundComponent);
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
 
     glEnableVertexAttribArray(displayPositionAttribute);
@@ -434,7 +441,7 @@ - (void)renderer:(id <SCNSceneRenderer>)aRenderer willRenderScene:(SCNScene *)sc
         glViewport(0, 0, EYE_RENDER_RESOLUTION_X, EYE_RENDER_RESOLUTION_Y);
     }
 
-    glClearColor(0.0, 0.0, 1.0, 1.0);
+    glClearColor(redBackgroundComponent, greenBackgroundComponent, blueBackgroundComponent, alphaBackgroundComponent);
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 }
 
@@ -469,6 +476,14 @@ - (void)renderer:(id <SCNSceneRenderer>)aRenderer didRenderScene:(SCNScene *)sce
 #pragma mark -
 #pragma mark Accessors
 
+- (void)setBackgroundColorRed:(CGFloat)redComponent green:(CGFloat)greenComponent blue:(CGFloat)blueComponent alpha:(CGFloat)alphaComponent;
+{
+    redBackgroundComponent = redComponent;
+    blueBackgroundComponent = blueComponent;
+    greenBackgroundComponent = greenComponent;
+    alphaBackgroundComponent = alphaComponent;
+}
+
 - (void)setScene:(SCNScene *)newValue;
 {
     CVDisplayLinkStop(displayLink);
@@ -481,7 +496,7 @@ - (void)setScene:(SCNScene *)newValue;
     glUniform4f(hmdWarpParamUniform, 1.0, 0.22, 0.24, 0.0);
 
 
-    CGFloat distortionCorrection = 1.0 + 0.22 + 0.24;
+//    CGFloat distortionCorrection = 1.0 + 0.22 + 0.24;
 //    CGFloat verticalFOV = 2.0 * atan(distortionCorrection * 0.09356 / (2.0 * 0.041)) * 180.0 / M_PI;// VScreenSize = 0.09356, EyeToScreenDistance = 0.041
 //    CGFloat horizontalFOV = 2.0 * atan(distortionCorrection * 0.14976 / (2.0 * 0.041)) * 180.0 / M_PI;// HScreenSize = 0.14976, EyeToScreenDistance = 0.041
     CGFloat verticalFOV = 97.5;

examples/ChessboardTest/OculusSceneKit/ChessboardTest-Info.plist

@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleExecutable</key>
+	<string>${EXECUTABLE_NAME}</string>
+	<key>CFBundleIconFile</key>
+	<string></string>
+	<key>CFBundleIdentifier</key>
+	<string>com.sunsetlakesoftware.${PRODUCT_NAME:rfc1034identifier}</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>${PRODUCT_NAME}</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>LSMinimumSystemVersion</key>
+	<string>${MACOSX_DEPLOYMENT_TARGET}</string>
+	<key>NSHumanReadableCopyright</key>
+	<string>Copyright © 2013 Sunset Lake Software LLC. All rights reserved.</string>
+	<key>NSMainNibFile</key>
+	<string>MainMenu</string>
+	<key>NSPrincipalClass</key>
+	<string>NSApplication</string>
+</dict>
+</plist>

examples/ChessboardTest/OculusSceneKit/ChessboardTest-Prefix.pch

@@ -0,0 +1,7 @@
+//
+// Prefix header for all source files of the 'OculusSceneKit' target in the 'OculusSceneKit' project
+//
+
+#ifdef __OBJC__
+    #import <Cocoa/Cocoa.h>
+#endif

examples/ChessboardTest/OculusSceneKit/SLSAppDelegate.h

@@ -0,0 +1,14 @@
+#import <Cocoa/Cocoa.h>
+#import "OculusRiftSceneKitView.h"
+
+@interface SLSAppDelegate : NSObject <NSApplicationDelegate>
+
+@property(assign) IBOutlet NSWindow *window;
+@property(assign) IBOutlet OculusRiftSceneKitView *oculusView;
+
+- (IBAction)increaseIPD:(id)sender;
+- (IBAction)decreaseIPD:(id)sender;
+- (IBAction)increaseDistance:(id)sender;
+- (IBAction)decreaseDistance:(id)sender;
+
+@end

examples/ChessboardTest/OculusSceneKit/SLSAppDelegate.m

@@ -0,0 +1,86 @@
+#import "SLSAppDelegate.h"
+
+@implementation SLSAppDelegate
+
+- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
+{
+    // Insert code here to initialize your application
+
+    SCNScene *scene = [SCNScene scene];
+
+    SCNNode *objectsNode = [SCNNode node];
+    [scene.rootNode addChildNode:objectsNode];
+
+    objectsNode.scale = SCNVector3Make(0.02, 0.02, 0.02);
+    objectsNode.position = SCNVector3Make(0, -300.0, -250);
+    objectsNode.rotation = SCNVector4Make(1, 0, 0, -M_PI/2);
+
+    // Chess model is from the WWDC 2013 Scene Kit presentation
+    SCNScene *chessboardScene = [SCNScene sceneNamed:@"chess"];
+    SCNNode *chessboardNode = [chessboardScene.rootNode childNodeWithName:@"Line01" recursively:YES];
+    NSLog(@"Chess node: %@", chessboardNode);
+    [objectsNode addChildNode:chessboardNode];
+
+    SCNNode *bishop = [chessboardNode childNodeWithName:@"bishop" recursively:YES];
+    bishop.geometry.firstMaterial.reflective.intensity = 0.7;
+    bishop.geometry.firstMaterial.fresnelExponent = 1.5;
+
+    SCNNode *L = [chessboardNode childNodeWithName:@"L" recursively:YES];
+    L.geometry.firstMaterial.reflective.intensity = 0.7;
+    L.geometry.firstMaterial.fresnelExponent = 1.5;
+
+    // Create a diffuse light
+	SCNLight *diffuseLight = [SCNLight light];
+    diffuseLight.color = [NSColor colorWithDeviceRed:0.1 green:0.1 blue:0.1 alpha:0.5];
+    SCNNode *diffuseLightNode = [SCNNode node];
+    diffuseLight.type = SCNLightTypeOmni;
+    diffuseLightNode.light = diffuseLight;
+	diffuseLightNode.position = SCNVector3Make(200.0, 400.0, -100);
+	[scene.rootNode addChildNode:diffuseLightNode];
+
+    // Create a top-down spotlight
+	SCNLight *spotLight = [SCNLight light];
+    SCNNode *spotLightNode = [SCNNode node];
+    spotLight.type = SCNLightTypeSpot;
+    spotLightNode.light = diffuseLight;
+	spotLightNode.position = SCNVector3Make(0, 300, -250);
+    spotLightNode.rotation = SCNVector4Make(1, 0, 0, M_PI_2);
+    [spotLight setAttribute:@30 forKey:SCNLightShadowNearClippingKey];
+    [spotLight setAttribute:@50 forKey:SCNLightShadowFarClippingKey];
+    [spotLight setAttribute:@10 forKey:SCNLightSpotInnerAngleKey];
+    [spotLight setAttribute:@45 forKey:SCNLightSpotOuterAngleKey];
+	[scene.rootNode addChildNode:spotLightNode];
+
+    self.oculusView.scene = scene;
+    [self.oculusView setBackgroundColorRed:0.0 green:0.0 blue:0.0 alpha:1.0];
+
+    // Have this start in fullscreen so that the rendering matches up to the Oculus Rift
+    [self.window toggleFullScreen:nil];
+}
+
+
+- (IBAction)increaseIPD:(id)sender;
+{
+    self.oculusView.interpupillaryDistance = self.oculusView.interpupillaryDistance + 2.0;
+}
+
+- (IBAction)decreaseIPD:(id)sender;
+{
+    self.oculusView.interpupillaryDistance = self.oculusView.interpupillaryDistance - 2.0;
+}
+
+- (IBAction)increaseDistance:(id)sender;
+{
+    SCNVector3 currentLocation = self.oculusView.headLocation;
+    currentLocation.z = currentLocation.z - 50.0;
+    self.oculusView.headLocation = currentLocation;
+}
+
+- (IBAction)decreaseDistance:(id)sender;
+{
+    SCNVector3 currentLocation = self.oculusView.headLocation;
+    currentLocation.z = currentLocation.z + 50.0;
+    self.oculusView.headLocation = currentLocation;
+}
+
+@end