Ios 如何通过SceneKit在.OBJ 3d模型上应用.MTL文件&;模型I/O
我正在尝试通过SceneKit和model I/0在.obj 3d模型上应用.mtl文件纹理 当我尝试在其上应用.jpg纹理时,下面的代码工作正常:Ios 如何通过SceneKit在.OBJ 3d模型上应用.MTL文件&;模型I/O,ios,swift,3d,scenekit,modelio,Ios,Swift,3d,Scenekit,Modelio,我正在尝试通过SceneKit和model I/0在.obj 3d模型上应用.mtl文件纹理 当我尝试在其上应用.jpg纹理时,下面的代码工作正常: let url = NSBundle.mainBundle().URLForResource("chair", withExtension: "obj") let asset = MDLAsset(URL: NSURL(string:url)!) guard let object
let url = NSBundle.mainBundle().URLForResource("chair", withExtension: "obj")
let asset = MDLAsset(URL: NSURL(string:url)!)
guard let object = asset.objectAtIndex(0) as? MDLMesh else {
//fatalError("Failed to get mesh from asset.")
return
}
if shouldApplyTexture == true {
var textureFileName = "chair.mtl"
// Create a material from the various textures
let scatteringFunction = MDLScatteringFunction()
let material = MDLMaterial(name: "baseMaterial", scatteringFunction: scatteringFunction)
material.setTextureProperties(textures: [
.BaseColor:textureFileName])
// Apply the texture to every submesh of the asset
for submesh in object.submeshes! {
if let submesh = submesh as? MDLSubmesh {
submesh.material = material
}
}
}
// Wrap the ModelIO object in a SceneKit object
let node = SCNNode(MDLObject: object)
if (scene.rootNode.childNodes.count > 0){
scene.rootNode.enumerateChildNodesUsingBlock { (node, stop) -> Void in
node.removeFromParentNode()
}
}
scene.rootNode.addChildNode(node)
我将以下MDMaterial扩展用于SetTextReproperties:
extension MDLMaterial {
func setTextureProperties([MDLMaterialSemantic:String]) -> Void {
for (key,value) in textures {
var finalURL = NSBundle.mainBundle().URLForResource(value, withExtension: "")
guard let url = finalURL else {
// fatalError("Failed to find URL for resource \(value).")
return
}
let property = MDLMaterialProperty(name:fileName!, semantic: key, URL: url)
self.setProperty(property)
}
}
}
我应该如何加载一个.mtl文件并将其应用于我的模型以使其具有纹理?
要从.mtl文件中获取纹理数据,我应该声明SCN材质的哪些属性?可能有点晚了,但我面临同样的问题,加载.mtl信息的方式是通过创建对象和场景,例如,我正在加载 确保包中有带纹理的.mtl和jpg
我也有同样的问题。你的问题解决了吗?没有,不幸的是没有。我必须提供一个带有.jpg纹理映射的解决方案。你能展示一下你如何使用.jpg文件的代码吗?
let scene = SCNScene(named: "rose.obj")