我正在使用Xcode中的Swift开发ARKit应用程序,试图从远程服务器加载模型,但是在将模型和纹理/材质一起加载并正确显示纹理/材质时遇到了问题。
我已经浏览了一些链接和教程,并加载了模型,但是没有显示材料。我已经在场景编辑器中创建了模型,或者下载了模型并将其转换为.scn文件,在Finder中找到它们,然后将其上传到Web服务器。只是.scn文件和材料(图像)。
//Tap Gesture
@objc func handleTap(_ gesture: UITapGestureRecognizer) {
//hittest
let results = self.sceneView.hitTest(gesture.location(in: gesture.view), types: ARHitTestResult.ResultType.featurePoint)
//return first tap
guard let result: ARHitTestResult = results.first else {
return
}
//Set URL of location of model
let myURL = NSURL(string: "https://www.website.com/scnfiles/iPhoneX.scn")
//Try getting this url or return
guard let scene = try? SCNScene(url: myURL! as URL, options: nil) else {return}
//Set the node to be the model
let node = scene.rootNode.childNode(withName: "SketchUp", recursively: true)
//Set scale
node?.scale = SCNVector3(0.025,0.025,0.025)
//The material image is located in the same directory
node?.geometry?.firstMaterial?.diffuse.contents = UIImage(named: "https://website/scnfiles/iPhoneX_Screen.jpg")
//set the position of the model
let position = SCNVector3Make(result.worldTransform.columns.3.x, result.worldTransform.columns.3.y, result.worldTransform.columns.3.z)
node?.position = position
//Add to scene
self.sceneView.scene.rootNode.addChildNode(node!)
}
我希望模型能够像在本地那样正确加载,显示具有已应用纹理的模型,但是我却得到了没有纹理的模型,只是希望使用材质的颜色是白色或白色。
我收到以下错误,看起来像是它试图在本地加载它?
ARKitModels[10386:3406637] [SceneKit] Error: Failed to load : <C3DImage 0x281e45180 src:file:///var/containers/Bundle/Application/233AE78F-748F-420B-96AD-30F591ADF80C/ARKitModels.app/material/iPhoneX_Screen.jpg [0.000000x0.000000]>
我们非常感谢您的帮助,如果有更好的方法,请告诉我。谢谢!
答案 0 :(得分:0)
尝试将预下载的UIImage设置为来自几何图形的所有材质的内容。像这样:
geometry.materials.forEach{$0.diffuse.contents = textureImage}
答案 1 :(得分:0)
因此,由于我想从远程服务器加载所有内容,因此@@@@@@@@@@@@@@@的一些帮助,使我在本地没有想到。
解决方案:遍历子节点并将纹理设置为与node.name相同的名称。您可以在场景编辑器中设置节点的名称,然后在适当的文件夹中具有相同的命名图像文件。这允许动态加载。仅当您可以控制模型/服务器或具有明确的说明时,此方法才有效。
@objc func handleTap(_ gesture: UITapGestureRecognizer) {
let results = self.sceneView.hitTest(gesture.location(in: gesture.view), types: ARHitTestResult.ResultType.featurePoint)
guard let result: ARHitTestResult = results.first else {
return
}
let myURL = NSURL(string: "https://www.website.com/scnfiles/model/model.scn")
guard let scene = try? SCNScene(url: myURL! as URL, options: nil) else {return}
let node = scene.rootNode.childNode(withName: "SketchUp", recursively: true)
//Solution//
let children = (node?.childNodes)!
for child in children {
child.geometry?.materials.forEach{$0.diffuse.contents = "https://www.website.com/scnfiles/model/materials/" + child.name! + ".jpg"
}
node?.scale = SCNVector3(0.025,0.025,0.025)
let position = SCNVector3Make(result.worldTransform.columns.3.x, result.worldTransform.columns.3.y, result.worldTransform.columns.3.z)
node?.position = position
self.sceneView.scene.rootNode.addChildNode(node!)
}