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Hi all,
I am currently making a fitness app and want to replicate the way Apple incorporate medals in their Fitness app.
They have a page called awards and it looks like a collection view of different medals that the user can unlock. Once unlocking a medal the user can tap on the medal and it opens to a full screen intractable scene where the user can rotate the medal etc.
I have had a play around with SceneKit and managed to get a medal loaded into a scene and display it in the app. However my functionality does not look as smooth or as polished as Apples.
Does anyone have any idea on how they have managed to present all of the different Scene-kit scenes in a collection-view for example? Or how they have achieved the smooth transition between tapping on the medal in the collection-view and the scene.
I guess this is created using SwiftUI. Can this be replicated in Storyboards?
Thanks!
My SceneKit Game failed with a
com.apple.scenekit.scnview-renderer (10): signal SIGABRT
The error was marked on the line
@main
Here's the log navigator:
2022-05-25 15:24:18.829319+0800 MyWorldiOS[9022:293392] Metal API Validation Enabled
validateRenderPassDescriptor:899: failed assertion `RenderPass Descriptor Validation
MTLRenderPassAttachmentDescriptor MTLStoreActionMultisampleResolve store action for the depth attachment is not supported by device
PixelFormat MTLPixelFormatDepth32Float cannot be a MSAA resolve target
'
dyld4 config: DYLD_ROOT_PATH=/Applications/Xcode-beta.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot DYLD_LIBRARY_PATH=/Users/wangkeshijian/Library/Developer/Xcode/DerivedData/MyWorld-aayoxjgvyfzbxvgqnvylzgvlwkyr/Build/Products/Debug-iphonesimulator:/Applications/Xcode-beta.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/introspection DYLD_INSERT_LIBRARIES=/Applications/Xcode-beta.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libBacktraceRecording.dylib:/Applications/Xcode-beta.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libMainThreadChecker.dylib:/Applications/Xcode-beta.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/Developer/Library/PrivateFrameworks/DTDDISupport.framework/libViewDebuggerSupport.dylib DYLD_FRAMEWORK_PATH=/Users/wangkeshijian/Library/Developer/Xcode/DerivedData/MyWorld-aayoxjgvyfzbxvgqnvylzgvlwkyr/Build/Products/Debug-iphonesimulator
validateRenderPassDescriptor:899: failed assertion `RenderPass Descriptor Validation
MTLRenderPassAttachmentDescriptor MTLStoreActionMultisampleResolve store action for the depth attachment is not supported by device
PixelFormat MTLPixelFormatDepth32Float cannot be a MSAA resolve target
'
CoreSimulator 802.6 - Device: MyPhone (EBB1ECDE-8AD7-4418-84AF-0B761E0A2EA7) - Runtime: iOS 15.4 (19E5234a) - DeviceType: iPhone 12
(lldb)
I'm not sure what else should I put in here
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I want to crop the usdz model in runtime. I use ModelIO for this.
Before: [https://i.stack.imgur.com/yDXXF.jpg)
After: [https://i.stack.imgur.com/m9ryg.jpg)
First of all, get file from bundle
let url = URL(fileURLWithPath: file)
} else {
print("Object not found in Bundle")
}
And then I need to access asset
let asset = MDLAsset(url: url)
What should I do after this step? How am I supposed to use SCNGeometrySource and SCNGeometryElement or MDLVoxelArray classes?
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I am new to Swift.
I want to display the point clouds data collected by lidar on the robot in real time on iOS.
Any suggestions for me? Thanks.
Post not yet marked as solved
I am facing issues baking lightprobes on iOS. The same logic bakes lightprobes on macOS successfully. iOS throws the following exception
[MTLDebugCommandBuffer waitUntilCompleted]:201: failed assertion `waitUntilCompleted on uncommitted command buffer'
Some specs : Runtime: iOS 15.4 - DeviceType: iPhone 13 Pro Max. I created two template apps from xcode (one for iOS and the other for macOS). Following is the code for lightprobe bake added in viewDidLoad
SCNScene* scene = [SCNScene scene];
SCNNode *ambientLight = [SCNNode node];
ambientLight.light = [SCNLight light];
ambientLight.light.type = SCNLightTypeAmbient;
ambientLight.light.color = [UIColor whiteColor];
ambientLight.light.intensity = 1000.0;
[scene.rootNode addChildNode:ambientLight];
scene.background.contents = [UIColor whiteColor];
scene.background.intensity = 2000.;
SCNNode *probe1 = [SCNNode node];
probe1.position = SCNVector3Make(-0.493530, 1.7285934, -0.150000);
probe1.light = [SCNLight light];
probe1.light.type = SCNLightTypeProbe;
[scene.rootNode addChildNode:probe1];
SCNRenderer* probeRenderer = [SCNRenderer rendererWithDevice:nil options:nil];
probeRenderer.scene = scene;
NSArray<SCNNode*> *probes = [NSArray arrayWithObjects: probe1, nil];
[probeRenderer updateProbes: probes atTime:1.0];
The crash occurs at updateProbes. Also, I have logged and checked the 27 floats and they are not garbage for macOS so essentially the bake is working as expected on macOS. Any help would be really appreciated!
How can I crop a 3D model as seen in the photos? Should I use MetalKit or can I handle it with sceneKit and modelIO? I couldn't find any code examples on this topic. Can you share the code snippet
Before:
[https://i.stack.imgur.com/yDXXF.jpg)
After:
[https://i.stack.imgur.com/m9ryg.jpg)
Post not yet marked as solved
I'm not sure which combination of iOS/XCode/Mac OS is causing this issue, but all of a sudden when I try to run our SceneKit app and the "Scheme -> Diagnostics -> Metal -> API Validation" setting is turned off the scene won't render and the console is just full of the following errors:
Execution of the command buffer was aborted due to an error during execution. Invalid Resource (00000009:kIOGPUCommandBufferCallbackErrorInvalidResource)
[SceneKit] Error: Main command buffer execution failed with status 5, error: Error Domain=MTLCommandBufferErrorDomain Code=9 "Invalid Resource (00000009:kIOGPUCommandBufferCallbackErrorInvalidResource)"
)
If you run the app outside of xcode it's fine, also enabling the "API Validation" option stops the issue.
One of my schemes has this option disabled since the project began and never had an issue before. Just throwing this out there incase someone else has spent hours of their life trying to figure out why this is not working for them.
Also you can just create a new SceneKit project and turn that diagnostic option off and the app won't render anything.
I need some help adding an .scn file to my submission for this year.
I've tried creating an art.scnassets file from xcode within the project, adding the .scn file and trying to use it with SCNScene(named: "scene.scn"), but I get a blank SCNView and printing value of the SCNScene, I get nil.
Please help in this context ASAP.
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I am using scene.write(to:"dirpath\name.usdz") to get usdz export functionality into my app (universal, macOS & iOS). My problem is, it ceases to work after the first use, quitting & restarting the app is the only way to re-enable it. I have tried reusing the same scene, and instantiating a new scene (both ways with the exact same node structure), same results every time: first invocation writes a file of ~14MB, any calls after that write 1.5-2k of garbage. I use a unique filename for each write, and check to make sure it doesn't already exist.
Any ideas?
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Hi, I just wanted to display a SpriteKit Scene in a SCNPlane. So I set the the SCNMaterial contents to my SKScene, but instead of getting the scene I'm getting a grey plane. This is my code by the way:
var mainScene: SKScene {
let scene = Game()
scene.size = CGSize(width: 1024, height: 1024)
scene.scaleMode = .resizeFill
scene.backgroundColor = .purple
scene.view?.backgroundColor = .purple
scene.view?.allowsTransparency = false
return scene
}
func initMainScene() -> SceneView {
mainScene.view?.isPaused = false
let scene = SCNScene()
let mainSceneMaterial = SCNMaterial()
mainSceneMaterial.normal.contents = mainScene
mainSceneMaterial.isDoubleSided = true
let planeGeometry = SCNPlane(width: 1, height: 1)
planeGeometry.materials = [mainSceneMaterial]
let plane: SCNNode = SCNNode(geometry: planeGeometry)
let camera: SCNNode = SCNNode()
camera.name = "Camera"
camera.camera = SCNCamera()
camera.position = SCNVector3(x: 0.0, y: 0.0, z: 4.0)
let light: SCNNode = SCNNode()
light.light = SCNLight()
light.light!.type = .omni
light.position = SCNVector3(x: 1.5, y: 1.5, z: 1.5)
scene.rootNode.addChildNode(camera)
scene.rootNode.addChildNode(light)
scene.rootNode.addChildNode(plane)
return SceneView(
scene: scene,
pointOfView: scene.rootNode.childNode(withName: "Camera", recursively: false),
options: []
)
}
Here is the screenshot:
Also, my SpriteKit scene has touchesBegan and touchesMoved functions implemented, will those events still work if I embed the scene in the SCNMaterial?
Thanks very much 🙏
Hi, I just wanted to add a 3D perspective to my SpriteKit Scene, so I wondered if I render the SpriteKit Scene as a material of SCNGeometry is possible. If not, is there another way to give a 3D perspective to a SpriteKit Scene.
Thanks very much 🙏
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I want to remove unnecessary materials or textures in order to reduce the size of the USDZ model I have. How can I manipulate this model with swift?
or, I can try any advice to reduce the size of the USDZ model
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Hi, I want to build an ARKit + SceneKit (using Storyboard) game for this year's WWDC Swift Student Challenge.
However, the format for submission must be in swiftpm, and it seems that it only supports SwiftUI.
I'm not too familiar with SwiftUI, so can I still use UIKit, ARKit, and SceneKit in swiftpm? Or must I just build something with SwiftUI?
Thanks!
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I'm having the most frustrating time trying to get SceneKit to render custom geometry on Monterey on an MBP M1Max. After some mucking about, I'm starting to suspect that the internal floating point representation has shifted to 64-bit?!? I'm wondering if this is also the case for element buffers, because rendering with UInt32 element arrays is FUBAR. Unfortunately, SceneKit won't allow me to create 64-bit element arrays.
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required: Xcode 13.3 on macOS 12.3
is it okay to run Mac version 12.3.1 not 12.3?
playground book is not allowed to be submitted?
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Hi,
I'm building SceneKit app and run into a weird situation. From time to time, I can 't see any virtual objects in AR Scene, but it works perfectly in most cases. And in this moment I can't see any objects, sceneView.pointOfView.position.x or y or z is Nan, rotation is the same.
guard let camera = sceneView?.pointOfView else {
print("Get phonePosition Fail")
return nil
}
// TODO: Don't know why sceneView?.pointOfView gets nothing (NaN). Should find out why.
if camera.position.x.isNaN {
if let session = sceneView?.session {
interrupted?(session)
}
return nil
}
Did anyone handle this case before?
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Can you develop the feature to pan & zoom simultaneously on the AR/VR SceneKit?
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How do you set the size of an area light in sceneKit?
let areaLightNode = SCNNode()
areaLightNode.light = SCNLight()
areaLightNode.light!.type = .area
areaLightNode.position = SCNVector3(x: 0, y: 5, z: 0)
areaLightNode.light?.intensity = 1000
Nothing appears when using the above
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I'm trying to populate scene view inside Table cell (for 3D objects) as a subview. For first view load its working fine but as new child nodes are added/Updated to view that is not happening its remain static(objects are not updating on view).
Tried with renderer delegate values of child nodes are updated but on view its not happening we have to switch between different scene then view is loaded properly.
How to update or refresh subview continuously ?
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Good morning,
We are creating an AR app made with Unity and AR Foundation and we would like to associate our app with an App Clip.
Is it possible to create an App Clip from a Unity app?
I understand that Unity builds may be too heavy to be used as App Clips.
Otherwise, is it possible to associate a Unity app with an App Clip created on SceneKit or RealityKit and to upload it on the App Store?
How could we achieve that? Is it possible to add a custom App Clip to an app archive made with Unity?
Thanks in advance!
