added PBR materials, and updated screenshots

AR-TicTacToe.xcodeproj/project.pbxproj

@@ -17,6 +17,7 @@
 		0633C8D91EF9108C00F6A311 /* GameState.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0633C8D81EF9108C00F6A311 /* GameState.swift */; };
 		0633C8DB1EF910CB00F6A311 /* Extensions.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0633C8DA1EF910CB00F6A311 /* Extensions.swift */; };
 		0633C8DD1EF910D900F6A311 /* Board.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0633C8DC1EF910D900F6A311 /* Board.swift */; };
+		708A9ACA1EFEFF4700D010B9 /* Media.scnassets in Resources */ = {isa = PBXBuildFile; fileRef = 708A9AC91EFEFF4700D010B9 /* Media.scnassets */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXFileReference section */
@@ -32,6 +33,8 @@
 		0633C8D81EF9108C00F6A311 /* GameState.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = GameState.swift; sourceTree = "<group>"; };
 		0633C8DA1EF910CB00F6A311 /* Extensions.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Extensions.swift; sourceTree = "<group>"; };
 		0633C8DC1EF910D900F6A311 /* Board.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Board.swift; sourceTree = "<group>"; };
+		708A9A921EFEF94700D010B9 /* media_sources.txt */ = {isa = PBXFileReference; lastKnownFileType = text; path = media_sources.txt; sourceTree = "<group>"; };
+		708A9AC91EFEFF4700D010B9 /* Media.scnassets */ = {isa = PBXFileReference; lastKnownFileType = wrapper.scnassets; path = Media.scnassets; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -75,6 +78,8 @@
 				0633C8D81EF9108C00F6A311 /* GameState.swift */,
 				0633C8DA1EF910CB00F6A311 /* Extensions.swift */,
 				0633C8DC1EF910D900F6A311 /* Board.swift */,
+				708A9A921EFEF94700D010B9 /* media_sources.txt */,
+				708A9AC91EFEFF4700D010B9 /* Media.scnassets */,
 			);
 			path = "AR-TicTacToe";
 			sourceTree = "<group>";
@@ -137,6 +142,7 @@
 			isa = PBXResourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				708A9ACA1EFEFF4700D010B9 /* Media.scnassets in Resources */,
 				0633C8C91EF90F6600F6A311 /* LaunchScreen.storyboard in Resources */,
 				0633C8C61EF90F6600F6A311 /* Assets.xcassets in Resources */,
 				0633C8C41EF90F6600F6A311 /* Main.storyboard in Resources */,

AR-TicTacToe/Board.swift

@@ -59,27 +59,19 @@ class Board {
             let geometry = SCNBox(width: width,
                                   height: height,
                                   length: length,
-                                  chamferRadius: 0)
-            geometry.firstMaterial!.diffuse.contents = UIColor.darkGray
-            geometry.firstMaterial!.specular.contents = UIColor.white
-
-            let vgeometry = SCNBox(width: width,
-                                   height: height,
-                                   length: length,
-                                   chamferRadius: 0)
-            vgeometry.firstMaterial!.diffuse.contents = UIColor.darkGray
-            vgeometry.firstMaterial!.specular.contents = UIColor.white
-
-
-
+                                  chamferRadius: height * 0.1)
+            geometry.firstMaterial?.lightingModel = .physicallyBased
+            geometry.firstMaterial?.diffuse.contents = UIImage(named: "Media.scnassets/scuffed-plastic2-alb.png")
+            geometry.firstMaterial?.roughness.contents = UIImage(named: "Media.scnassets/scuffed-plastic-rough.png")
+            geometry.firstMaterial?.metalness.contents = UIImage(named: "Media.scnassets/scuffed-plastic-metal.png")
+            geometry.firstMaterial?.normal.contents = UIImage(named: "Media.scnassets/scuffed-plastic-normal.png")
+            geometry.firstMaterial?.ambientOcclusion.contents = UIImage(named: "Media.scnassets/scuffed-plastic-ao.png")
 
             let horizontalLineNode = SCNNode(geometry: geometry)
             horizontalLineNode.position = SCNVector3(lineOffset, height * 0.5, 0)
             node.addChildNode(horizontalLineNode)
 
-            let verticalLineNode = SCNNode(geometry: vgeometry)
-
-            // using euler angles the object rotates around itself ;)
+            let verticalLineNode = SCNNode(geometry: geometry)
             verticalLineNode.eulerAngles = SCNVector3(0, 90.0.degreesToRadians, 0)
             verticalLineNode.position = SCNVector3(0, height * 0.5, lineOffset)
             node.addChildNode(verticalLineNode)

AR-TicTacToe/Figure.swift

@@ -20,8 +20,12 @@ class Figure {
     class func xFigure() -> SCNNode {
         let geometry = SCNCylinder(radius: Dimensions.FIGURE_RADIUS,
                                    height: Dimensions.SQUARE_SIZE)
-        geometry.firstMaterial?.diffuse.contents = UIColor.brown
-        geometry.firstMaterial?.specular.contents = UIColor.white
+        geometry.firstMaterial?.lightingModel = .physicallyBased
+        geometry.firstMaterial?.diffuse.contents = UIImage(named: "Media.scnassets/scuffed-plastic6-alb.png")
+        geometry.firstMaterial?.roughness.contents = UIImage(named: "Media.scnassets/scuffed-plastic-rough.png")
+        geometry.firstMaterial?.metalness.contents = UIImage(named: "Media.scnassets/scuffed-plastic-metal.png")
+        geometry.firstMaterial?.normal.contents = UIImage(named: "Media.scnassets/scuffed-plastic-normal.png")
+        geometry.firstMaterial?.ambientOcclusion.contents = UIImage(named: "Media.scnassets/scuffed-plastic-ao.png")
 
         let cylinderNode1 = SCNNode(geometry: geometry)
         cylinderNode1.eulerAngles = SCNVector3(-90.0.degreesToRadians, 45.0.degreesToRadians, 0)
@@ -40,8 +44,14 @@ class Figure {
     class func oFigure() -> SCNNode {
         let geometry = SCNTorus(ringRadius: Dimensions.SQUARE_SIZE * 0.3,
                                 pipeRadius: Dimensions.FIGURE_RADIUS)
-        geometry.firstMaterial?.diffuse.contents = UIColor.purple
-        geometry.firstMaterial?.specular.contents = UIColor.white
+        geometry.firstMaterial?.lightingModel = .physicallyBased
+        geometry.firstMaterial?.diffuse.contents = UIImage(named: "Media.scnassets/scuffed-plastic4-alb.png")
+        geometry.firstMaterial?.roughness.contents = UIImage(named: "Media.scnassets/scuffed-plastic-rough.png")
+        geometry.firstMaterial?.metalness.contents = UIImage(named: "Media.scnassets/scuffed-plastic-metal.png")
+        geometry.firstMaterial?.normal.contents = UIImage(named: "Media.scnassets/scuffed-plastic-normal.png")
+        geometry.firstMaterial?.ambientOcclusion.contents = UIImage(named: "Media.scnassets/scuffed-plastic-ao.png")
+
+        // applying PBR: https://medium.com/@avihay/amazing-physically-based-rendering-using-the-new-ios-10-scenekit-2489e43f7021
 
         let torusNode = SCNNode(geometry: geometry)
         torusNode.position = SCNVector3(0, Dimensions.FIGURE_RADIUS * 0.5, 0)

AR-TicTacToe/ViewController.swift

@@ -82,10 +82,9 @@ class ViewController: UIViewController, ARSCNViewDelegate {
         // sceneView.antialiasingMode = .multisampling4X
         //sceneView.preferredFramesPerSecond = 60
         //sceneView.contentScaleFactor = 1.3
+        sceneView.antialiasingMode = .multisampling4X
 
-        sceneView.scene = SCNScene()
-        sceneView.automaticallyUpdatesLighting = true
-        //sceneView.autoenablesDefaultLighting = false
+        sceneView.automaticallyUpdatesLighting = false
 
         let tap = UITapGestureRecognizer()
         tap.addTarget(self, action: #selector(didTap))
@@ -96,6 +95,16 @@ class ViewController: UIViewController, ARSCNViewDelegate {
         sceneView.addGestureRecognizer(pan)
     }
 
+    // from APples app
+    func enableEnvironmentMapWithIntensity(_ intensity: CGFloat) {
+        if sceneView.scene.lightingEnvironment.contents == nil {
+            if let environmentMap = UIImage(named: "Media.scnassets/environment_blur.exr") {
+                sceneView.scene.lightingEnvironment.contents = environmentMap
+            }
+        }
+        sceneView.scene.lightingEnvironment.intensity = intensity
+    }
+
     override func viewWillAppear(_ animated: Bool) {
         super.viewWillAppear(animated)
 
@@ -132,6 +141,7 @@ class ViewController: UIViewController, ARSCNViewDelegate {
         board.node.position = position
         sceneView.scene.rootNode.addChildNode(board.node)
 
+        /*
         let spotLight = SCNLight()
         spotLight.type = .spot
         spotLight.castsShadow = true
@@ -144,6 +154,7 @@ class ViewController: UIViewController, ARSCNViewDelegate {
         lightNode!.position = SCNVector3(position.x, position.y + 25, position.z)
         lightNode!.constraints = [constraint]
         sceneView.scene.rootNode.addChildNode(lightNode!)
+         */
 
         for (key, figure) in figures {
             //TODO: how to get the coordinates for these?!?!?
@@ -300,6 +311,22 @@ class ViewController: UIViewController, ARSCNViewDelegate {
 
     // MARK: - ARSCNViewDelegate
 
+    func renderer(_ renderer: SCNSceneRenderer, updateAtTime time: TimeInterval) {
+
+        // from apples app
+        DispatchQueue.main.async {
+            // If light estimation is enabled, update the intensity of the model's lights and the environment map
+            if let lightEstimate = self.sceneView.session.currentFrame?.lightEstimate {
+
+                // Apple divived the ambientIntensity by 40, I find that, atleast with the materials used
+                // here that it's a big too bright, so I increased to to 50..
+                self.enableEnvironmentMapWithIntensity(lightEstimate.ambientIntensity / 50)
+            } else {
+                self.enableEnvironmentMapWithIntensity(25)
+            }
+        }
+    }
+
     // did at plane(?)
     func renderer(_ renderer: SCNSceneRenderer, didAdd node: SCNNode, for anchor: ARAnchor) {
         print("didAdd")

AR-TicTacToe/media_sources.txt

@@ -0,0 +1,8 @@
+
+
+plastic (unreal engine variants):
+https://freepbr.com/materials/worn-scuffed-plastic-pbr-material/
+
+environment files:
+Apple ARKIt Demo App
+