remove materail index

Sources/glTFSceneKit/GLTF+CompressedTexture.swift

@@ -34,8 +34,8 @@ extension GLTF {
         
         if loadLevel == .all {
             var buffers = [GLTFBuffer]()
-            for bViewIndex in descriptor.sources {
+            for bView in descriptor.sources {
-                let buffer = self.buffers![self.bufferViews![bViewIndex].buffer]
+                let buffer = bView.buffer
                 buffers.append(buffer)
             }
                             
@@ -65,28 +65,27 @@ extension GLTF {
         } else {
             let sizeWidth = (loadLevel == .first) ? 32 : descriptor.width
             let sizeHeight = (loadLevel == .first) ? 32 : descriptor.height
-            let index = (loadLevel == .first) ? descriptor.sources.last! : descriptor.sources.first!  
+            let bufferView = (loadLevel == .first) ? descriptor.sources.last! : descriptor.sources.first!
             
-            if let bView = self.bufferViews?[index] {
+            let buffer_ = bufferView.buffer
-                let buffer_ = self.buffers![bView.buffer]
+            self.loader.load(gltf:self, resource: buffer_, options: ResourceType.texture) { (buffer, error) in
-                self.loader.load(gltf:self, resource: buffer_, options: ResourceType.texture) { (buffer, error) in
+                var error_ = error
-                    var error_ = error
+                var textureResult:Any?
-                    var textureResult:Any?
+                var datas = [Data]()
-                    var datas = [Data]()
+                if buffer.data != nil {
-                    if buffer.data != nil {
+                    datas.append(buffer.data!)
-                        datas.append(buffer.data!)
+                    do {
-                        do {
+                        textureResult = try self._createMetalTexture(sizeWidth, sizeHeight, pixelFormat, datas, bytesPerRow)
-                            textureResult = try self._createMetalTexture(sizeWidth, sizeHeight, pixelFormat, datas, bytesPerRow)
+                    } catch {
-                        } catch {
+                        error_ = error
-                            error_ = error
-                        }
-                    } else {
-                        error_ = GLTFError("Can't load data for \(buffer.uri ?? "")")
                     }
-                    
+                } else {
-                    completionHandler(textureResult, error_)
+                    error_ = GLTFError("Can't load data for \(buffer.uri ?? "")")
                 }
+                
+                completionHandler(textureResult, error_)
             }     
+        
         }
     }
     

Sources/glTFSceneKit/GLTF+Material.swift

@@ -14,9 +14,9 @@ extension GLTF {
     // MARK: - Material
     
     // load material by index
-    internal func loadMaterial(index:Int, delegate: TextureLoaderDelegate, textureChangedCallback: ((Any?)-> Void)? = nil, completionHandler: @escaping (SCNMaterial) -> Void) {
+    internal func loadMaterial(_ material:GLTFMaterial?, delegate: TextureLoaderDelegate, textureChangedCallback: ((Any?)-> Void)? = nil, completionHandler: @escaping (SCNMaterial) -> Void) {
         
-        if let material = self.materials?[index] {
+        if let material = material {
             let scnMaterial = SCNMaterial()
             scnMaterial.name = material.name
             scnMaterial.isDoubleSided = material.doubleSided

Sources/glTFSceneKit/GLTF+SceneKit.swift

@@ -104,27 +104,47 @@ extension GLTF {
         }
     }
     
-    internal static func requestData(glTF: GLTF, bufferView:GLTFBufferView) throws -> Data? {
+//    internal static func requestData(glTF: GLTF, bufferView:GLTFBufferView) throws -> Data? {
-        if let buffer = glTF.buffers?[bufferView.buffer] {
+//        if let buffer = glTF.buffers?[bufferView.buffer] {
+//            
+//            if let data = try glTF.loader.load(gltf:glTF, resource: buffer) {
+//                return data
+//            }
+//        } else {
+//            throw GLTFError("Can't load data! Can't find buffer at index \(bufferView.buffer)")
+//        }
+//        return nil
+//    }
     
-            if let data = try glTF.loader.load(gltf:glTF, resource: buffer) {
+//    internal static func requestData(glTF: GLTF, bufferView:Int) throws -> (GLTFBufferView, Data)? {
-                return data
+//        if let bufferView = glTF.bufferViews?[bufferView] {
-            }
+//            if let data = try requestData(glTF: glTF, bufferView: bufferView) {
-        } else {
+//                return (bufferView, data)
+//            }
+//        } else {
+//            throw GLTFError("Can't load data! Can't find bufferView at index \(bufferView)")
+//        }
+//        return nil
+//    }
+    
+    internal static func requestData(glTF: GLTF, bufferView:GLTFBufferView) throws -> (GLTFBufferView, Data)? {
+//        if let bufferView = glTF.bufferViews?[bufferView] {
+//            if let data = try requestData(glTF: glTF, bufferView: bufferView) {
+//                return (bufferView, data)
+//            }
+//        } else {
+//            throw GLTFError("Can't load data! Can't find bufferView at index \(bufferView)")
+//        }
+//        return nil
+          
+        let buffer = bufferView.buffer
+        if let data = try glTF.loader.load(gltf:glTF, resource: buffer) {
+            return (bufferView, data)
+        }
+        else {
             throw GLTFError("Can't load data! Can't find buffer at index \(bufferView.buffer)")
         }
-        return nil
-    }
 
-    internal static func requestData(glTF: GLTF, bufferView:Int) throws -> (GLTFBufferView, Data)? {
-        if let bufferView = glTF.bufferViews?[bufferView] {
-            if let data = try requestData(glTF: glTF, bufferView: bufferView) {
-                return (bufferView, data)
-            }
-        } else {
-            throw GLTFError("Can't load data! Can't find bufferView at index \(bufferView)")
-        }
-        return nil
     }
     
 }

Sources/glTFSceneKit/GLTF/GLTFAccessor.swift

@@ -111,7 +111,7 @@ import Foundation
 @objcMembers
 open class GLTFAccessor : NSObject, Codable {
     /// The index of the bufferView.
-    public var bufferView:Int?
+    public var bufferView:GLTFBufferView?
 
     /// The offset relative to the start of the bufferView in bytes.
     public var byteOffset:Int
@@ -163,7 +163,7 @@ open class GLTFAccessor : NSObject, Codable {
 
     required public init(from decoder: Decoder) throws {
         let container = try decoder.container(keyedBy: CodingKeys.self)
-        bufferView = try? container.decode(Int.self, forKey: .bufferView)
+        bufferView = try? container.decode(GLTFBufferView.self, forKey: .bufferView)
         do {
             byteOffset = try container.decode(Int.self, forKey: .byteOffset)
         } catch {

Sources/glTFSceneKit/GLTF/GLTFBufferView.swift

@@ -40,7 +40,7 @@ import Foundation
 @objcMembers
 open class GLTFBufferView : NSObject, Codable {
     /// The index of the buffer.
-    public var buffer:Int
+    public var buffer:GLTFBuffer
 
     /// The length of the bufferView in bytes.
     public var byteLength:Int
@@ -74,7 +74,7 @@ open class GLTFBufferView : NSObject, Codable {
         case target
     }
 
-    public init(buffer b:Int, byteLength bl:Int, byteOffset bo:Int) {
+    public init(buffer b:GLTFBuffer, byteLength bl:Int, byteOffset bo:Int) {
         buffer = b
         byteLength = bl
         byteOffset = bo
@@ -82,7 +82,7 @@ open class GLTFBufferView : NSObject, Codable {
     
     required public init(from decoder: Decoder) throws {
         let container = try decoder.container(keyedBy: CodingKeys.self)
-        buffer = try container.decode(Int.self, forKey: .buffer)
+        buffer = try container.decode(GLTFBuffer.self, forKey: .buffer)
         byteLength = try container.decode(Int.self, forKey: .byteLength)
         do {
             byteOffset = try container.decode(Int.self, forKey: .byteOffset)

Sources/glTFSceneKit/GLTF/GLTFImage.swift

@@ -40,7 +40,7 @@ import Foundation
 @objcMembers
 open class GLTFImage : NSObject, Codable {
     /// The index of the bufferView that contains the image. Use this instead of the image's uri property.
-    public var bufferView:Int?
+    public var bufferView:GLTFBufferView?
 
     /// Dictionary object with extension-specific objects.
     public var extensions:[String: Any]?
@@ -70,7 +70,7 @@ open class GLTFImage : NSObject, Codable {
     
     required public init(from decoder: Decoder) throws {
         let container = try decoder.container(keyedBy: CodingKeys.self)
-        bufferView = try? container.decode(Int.self, forKey: .bufferView)
+        bufferView = try? container.decode(GLTFBufferView.self, forKey: .bufferView)
         extensions = try? container.decode([String: Any].self, forKey: .extensions)
         extras = try? container.decode([String: Any].self, forKey: .extras)
         mimeType = try? container.decode(GLTFImageMimeType.self, forKey: .mimeType)

Sources/glTFSceneKit/GLTF/GLTFKHRDracoMeshCompressionExtension.swift

@@ -17,14 +17,14 @@ open class GLTFKHRDracoMeshCompressionExtension : NSObject, Codable {
     public var attributes:[String: Int]
 
     /// The index of the bufferView.
-    public var bufferView:Int
+    public var bufferView:GLTFBufferView
 
     private enum CodingKeys: String, CodingKey {
         case attributes
         case bufferView
     }
 
-    public init(attributes a:[String: Int], bufferView bv:Int) {
+    public init(attributes a:[String: Int], bufferView bv:GLTFBufferView) {
         attributes = a
         bufferView = bv
     }
@@ -32,7 +32,7 @@ open class GLTFKHRDracoMeshCompressionExtension : NSObject, Codable {
     required public init(from decoder: Decoder) throws {
         let container = try decoder.container(keyedBy: CodingKeys.self)
         attributes = try container.decode([String: Int].self, forKey: .attributes)
-        bufferView = try container.decode(Int.self, forKey: .bufferView)
+        bufferView = try container.decode(GLTFBufferView.self, forKey: .bufferView)
     }
 
     public func encode(to encoder: Encoder) throws {

Sources/glTFSceneKit/GLTF/GLTFMeshPrimitive.swift

@@ -80,7 +80,7 @@ open class GLTFMeshPrimitive : NSObject, Codable {
     public var indices:Int?
 
     /// The index of the material to apply to this primitive when rendering.
-    public var material:Int?
+    public var material:GLTFMaterial?
 
     /// The type of primitives to render.
     public var mode:GLTFMeshPrimitiveMode
@@ -109,7 +109,7 @@ open class GLTFMeshPrimitive : NSObject, Codable {
         extensions = try? container.decode([String: GLTFKHRDracoMeshCompressionExtension].self, forKey: .extensions)
         extras = try? container.decode([String: Any].self, forKey: .extras)
         indices = try? container.decode(Int.self, forKey: .indices)
-        material = try? container.decode(Int.self, forKey: .material)
+        material = try? container.decode(GLTFMaterial.self, forKey: .material)
         do {
             mode = try container.decode(GLTFMeshPrimitiveMode.self, forKey: .mode)
         } catch {

Sources/glTFSceneKit/GLTFConverter+Geometry.swift

@@ -123,12 +123,8 @@ extension GLTFAccessor {
 
 fileprivate extension GLTF {
     //let buffer = glTF.buffers![glTF.bufferViews![bufferView].buffer]
-    func buffer(for bufferView: Int) -> GLTFBuffer? {
+    func buffer(for bufferView: GLTFBufferView) -> GLTFBuffer? {
-        if let bufferIndex = self.bufferViews?[bufferView].buffer {
+        return bufferView.buffer
-            return self.buffers?[bufferIndex]
-        }
-        
-        return nil
     }
 }
 
@@ -213,8 +209,8 @@ extension GLTFConverter {
                         primitiveNode.geometry!.firstMaterial = emptyMaterial
                     }
                 
-                    if let materialIndex = primitive.material {
+                    if let material = primitive.material {
-                        self.glTF.loadMaterial(index:materialIndex, delegate: self, textureChangedCallback: { _ in
+                        self.glTF.loadMaterial(material, delegate: self, textureChangedCallback: { _ in
                             if let material = primitiveNode.geometry?.firstMaterial {
                                 if let texture = material.diffuse.contents as? MTLTexture {
                                     if texture.pixelFormat.hasAlpha() {
@@ -268,8 +264,7 @@ extension GLTFConverter {
     fileprivate func geometryElement(_ primitive: GLTFMeshPrimitive) throws -> SCNGeometryElement? {
         if let indicesIndex = primitive.indices {
             if let accessor = glTF.accessors?[indicesIndex],
-                let bufferViewIndex = accessor.bufferView,
+                let bufferView = accessor.bufferView {
-                let bufferView = glTF.bufferViews?[bufferViewIndex] {
                 
                 if let indicesData = try loadAcessor(accessor, bufferView, false) {
                     
@@ -309,7 +304,7 @@ extension GLTFConverter {
         var geometrySources = [SCNGeometrySource]()
         
         // accessors can point to different buffers. We cache last one.
-        var previousBufferView = -1
+        var previousBufferView: GLTFBufferView?
         var mtlBuffer:MTLBuffer?
         
         var byteOffset = 0
@@ -417,11 +412,11 @@ extension GLTFConverter {
     // determine where an accessor and a bufferView link are interleaved or not
     internal func determineAcessor(_ accessor:GLTFAccessor) throws -> (GLTFBufferView, Bool)? {
         
-        guard let index =  accessor.bufferView else {
+        guard let bufferView = accessor.bufferView else {
             throw GLTFError("Missing 'bufferView' for \(accessor.name ?? "") acessor")
         }
         
-        if let bufferView = glTF.bufferViews?[index] {
+//        if let bufferView = glTF.bufferViews?[index] {
             
             // Interleaved data usualy has bytesStride as correct value.
             // Some times non-interleaved data also has bytesStride, and in some cases don't. It's up to exporter
@@ -431,15 +426,15 @@ extension GLTFConverter {
             
             let interleaved = (byteStride != accessorByteStride)
             return (bufferView, interleaved)
-        }
+//        }
-        return nil
+//        return nil
     }
     
     
     // get data by accessor
     internal func loadAcessor(_ accessor:GLTFAccessor, _ bufferView:GLTFBufferView, _ interleaved:Bool) throws -> Data? {
         
-        if let data = try GLTF.requestData(glTF: glTF, bufferView: bufferView) {
+        if let (bufferView, data) = try GLTF.requestData(glTF: glTF, bufferView: bufferView) {
             
             var byteStride:Int = bufferView.byteStride ?? 0
             if (byteStride == 0) {

Sources/glTFSceneKit/GLTF_3D4MCompressedTextureExtension.swift

@@ -357,7 +357,7 @@ open class GLTF_3D4MCompressedTextureExtension : Codable {
     public var height:Int
 
     /// Texture index of bufferView used for each level of texture. First source representing level 0. Each next is divide by 2 of previous texture size. For example 0 level is 1024, next is 512 and next 256 ans so on.
-    public var sources:[Int]
+    public var sources:[GLTFBufferView]
 
     /// Texture 2D target.
     public var target:GLTF_3D4MCompressedTextureExtensionTarget
@@ -373,7 +373,7 @@ open class GLTF_3D4MCompressedTextureExtension : Codable {
     public init(compression c:GLTF_3D4MCompressedTextureExtensionCompression, 
                 width w:Int,
                 height h:Int,
-                sources s:[Int],
+                sources s:[GLTFBufferView],
                 target t:GLTF_3D4MCompressedTextureExtensionTarget) {
         compression = c 
         width = w
@@ -390,7 +390,7 @@ open class GLTF_3D4MCompressedTextureExtension : Codable {
         } catch {
             height = 0
         }
-        sources = try container.decode([Int].self, forKey: .sources)
+        sources = try container.decode([GLTFBufferView].self, forKey: .sources)
         do {
             target = try container.decode(GLTF_3D4MCompressedTextureExtensionTarget.self, forKey: .target)
         } catch {