我正在使用SKVideoNode作为我的球体的材质来播放360度视频,但它只在球体的xy正面部分渲染视频。我正在从URL流式传输视频,它是一个.m3u8格式的文件。参考:SKVideoNode as texture for SCNSphere。有多个人似乎和我遇到了同样的问题。
func makeSphere() {
let sceneView = SCNView(frame: self.view.frame);
self.view.addSubview(sceneView);
var screenSize: CGRect = UIScreen.mainScreen().bounds;
var screenWidth = screenSize.width;
var screenHeight = screenSize.height;
sceneView.frame.size.height = screenHeight * 1;
sceneView.frame.size.width = screenWidth * 1;
sceneView.center.x = screenWidth * 0.5;
let scene = SCNScene();
sceneView.scene = scene;
sphereGeometry = SCNSphere(radius: 5);
sphereNode = SCNNode(geometry: sphereGeometry);
sphereNode.position = SCNVector3(x: 0, y: 0, z: 0);
sphereGeometry.segmentCount = 55;
constraint = SCNLookAtConstraint(target: sphereNode);
let camera = SCNCamera();
let cameraNode = SCNNode();
cameraNode.camera = camera;
cameraNode.position = SCNVector3(x: 0, y: 0, z: 0);
let light = SCNLight();
light.type = SCNLightTypeOmni;
let lightNode = SCNNode();
lightNode.light = light;
lightNode.position = SCNVector3(x: 0, y: 0, z: 0);
cameraNode.constraints = [constraint];
scene.rootNode.addChildNode(cameraNode);
scene.rootNode.addChildNode(sphereNode);
let videoMaterial = SCNMaterial();
let path = "http://video-url.m3u8";
let url = NSURL(string: path);
let asset = AVURLAsset(URL: url!,options: nil);
let playerItem = AVPlayerItem(asset: asset);
let player = AVPlayer(playerItem: playerItem);
let videoNode = SKVideoNode(AVPlayer: player);
let size = CGFloat(100.0);
let spriteScene = SKScene(size: CGSizeMake(size,size));
videoNode.size.width = size;
videoNode.size.height = size;
spriteScene.addChild(videoNode);
videoMaterial.diffuse.contents = spriteScene;
videoMaterial.specular.contents = UIColor.redColor();
videoMaterial.shininess = 1.0;
videoMaterial.doubleSided = true;
sphereGeometry.materials = [videoMaterial];
videoNode.play();
}
如果显示图像没有问题,您可以使用上面的代码来重现我的问题。
编辑
使用videoMaterial.diffuse.contents.transfom(SCNMatrix4MakeScale(0,-1,1));
和 videoMaterial.diffuse.wrapT = SCNWrapMode.Repeat;
将视频投射到球体的下半部分,但是除了拉伸环之外,我什么也看不到,更改 WrapMode
使得iOS 6屏幕只显示一个颜色。
使用videoMaterial.diffuse.contents.transfom(SCNMatrix4MakeScale(1,0,1));
和 videoMaterial.diffuse.wrapT = SCNWrapMode.Repeat;
将视频呈现在球体左侧,但会拉伸纹理/视频。