public void GetImageBytes(glTF gltf, IStorage storage)
{
if (IsAsset)
{
return;
}
var image = gltf.GetImageFromTextureIndex(m_textureIndex);
if (string.IsNullOrEmpty(image.uri))
{
//
// use buffer view (GLB)
//
var byteSegment = gltf.GetViewBytes(image.bufferView);
m_imageBytes = ToArray(byteSegment);
m_textureName = !string.IsNullOrEmpty(image.name) ? image.name : string.Format("{0:00}#GLB", m_textureIndex);
}
else
{
m_imageBytes = ToArray(storage.Get(image.uri));
if (image.uri.StartsWith("data:"))
{
m_textureName = !string.IsNullOrEmpty(image.name) ? image.name : string.Format("{0:00}#Base64Embeded", m_textureIndex);
}
else
{
m_textureName = !string.IsNullOrEmpty(image.name) ? image.name : Path.GetFileNameWithoutExtension(image.uri);
}
}
}
public static ArraySegment <Byte> GetImageBytes(this glTF self, IStorage storage, int imageIndex, out string textureName)
{
var image = self.images[imageIndex];
if (string.IsNullOrEmpty(image.uri))
{
//
// use buffer view (GLB)
//
//m_imageBytes = ToArray(byteSegment);
textureName = !string.IsNullOrEmpty(image.name) ? image.name : string.Format("{0:00}#GLB", imageIndex);
return(self.GetViewBytes(image.bufferView));
}
else
{
if (image.uri.FastStartsWith("data:"))
{
textureName = !string.IsNullOrEmpty(image.name) ? image.name : string.Format("{0:00}#Base64Embedded", imageIndex);
}
else
{
textureName = !string.IsNullOrEmpty(image.name) ? image.name : Path.GetFileNameWithoutExtension(image.uri);
}
return(storage.Get(image.uri));
}
}
public void SaveTexturesAsPng(UnityPath prefabPath)
{
TextureBaseDir = prefabPath.Parent;
TextureBaseDir.ImportAsset();
//
// https://answers.unity.com/questions/647615/how-to-update-import-settings-for-newly-created-as.html
//
for (int i = 0; i < GLTF.textures.Count; ++i)
{
var x = GLTF.textures[i];
var image = GLTF.images[x.source];
if (string.IsNullOrEmpty(image.uri))
{
// glb buffer
var folder = prefabPath.GetAssetFolder(".Textures");
folder.EnsureFolder();
// name & bytes
var textureName = !string.IsNullOrEmpty(image.name) ? image.name : string.Format("{0:00}#GLB", i);
var byteSegment = GLTF.GetViewBytes(image.bufferView);
// path
var png = folder.Child(textureName + ".png");
File.WriteAllBytes(png.FullPath, byteSegment.ToArray());
png.ImportAsset();
image.uri = png.Value.Substring(TextureBaseDir.Value.Length + 1);
//Debug.LogFormat("image.uri: {0}", image.uri);
}
}
UnityEditor.AssetDatabase.Refresh();
}
public static ArraySegment <Byte> GetImageBytes(this glTF self, IStorage storage, int imageIndex)
{
var image = self.images[imageIndex];
if (string.IsNullOrEmpty(image.uri))
{
return(self.GetViewBytes(image.bufferView));
}
else
{
return(storage.Get(image.uri));
}
}
static TextureItem _ImportTexture(glTF gltf, int index)
{
var image = gltf.images[index];
if (string.IsNullOrEmpty(image.uri))
{
// use buffer view
var texture = new Texture2D(2, 2);
texture.name = string.IsNullOrEmpty(image.extra.name) ? string.Format("buffer#{0:00}", index) : image.extra.name;
var byteSegment = gltf.GetViewBytes(image.bufferView);
var bytes = byteSegment.ToArray();
texture.LoadImage(bytes, true);
return(new TextureItem(texture, index, false));
}
else if (image.uri.StartsWith("data:"))
{
// embeded
var bytes = UriByteBuffer.ReadEmbeded(image.uri);
var texture = new Texture2D(2, 2);
texture.name = string.IsNullOrEmpty(image.extra.name) ? "embeded" : image.extra.name;
texture.LoadImage(bytes);
return(new TextureItem(texture, index, false));
}
#if UNITY_EDITOR
else if (gltf.baseDir.StartsWith("Assets/"))
{
// local folder
var path = Path.Combine(gltf.baseDir, image.uri);
UnityEditor.AssetDatabase.ImportAsset(path);
var texture = UnityEditor.AssetDatabase.LoadAssetAtPath <Texture2D>(path);
texture.name = string.IsNullOrEmpty(image.extra.name) ? Path.GetFileNameWithoutExtension(path) : image.extra.name;
return(new TextureItem(texture, index, true));
}
#endif
else
{
// external
var path = Path.Combine(gltf.baseDir, image.uri);
var bytes = File.ReadAllBytes(path);
var texture = new Texture2D(2, 2);
texture.name = string.IsNullOrEmpty(image.extra.name) ? Path.GetFileNameWithoutExtension(path) : image.extra.name;
texture.LoadImage(bytes);
return(new TextureItem(texture, index, false));
}
}
private static Texture2D AssignTextureToMaterialPropertyAndExportAndExtract(Texture2D srcTex, string srcImageName, string propertyName)
{
// Prepare
var root = GameObject.CreatePrimitive(PrimitiveType.Cube);
var mat = new Material(Shader.Find("Standard"));
mat.SetTexture(propertyName, srcTex);
root.GetComponent <MeshRenderer>().sharedMaterial = mat;
// Export glTF
var gltf = new glTF();
using (var exporter = new gltfExporter(gltf, new GltfExportSettings
{
InverseAxis = Axes.X
}))
{
exporter.Prepare(root);
var settings = new GltfExportSettings
{
ExportOnlyBlendShapePosition = false,
UseSparseAccessorForMorphTarget = false,
DivideVertexBuffer = false,
};
exporter.Export(settings, new EditorTextureSerializer());
}
Assert.AreEqual(1, gltf.images.Count);
var exportedImage = gltf.images[0];
Assert.AreEqual("image/png", exportedImage.mimeType);
Assert.AreEqual(srcImageName, exportedImage.name);
UnityEngine.Object.DestroyImmediate(mat);
UnityEngine.Object.DestroyImmediate(root);
// Extract Image to Texture2D
var exportedBytes = gltf.GetViewBytes(exportedImage.bufferView).ToArray();
var exportedTexture = new Texture2D(2, 2, TextureFormat.ARGB32, mipChain: false, linear: false);
Assert.IsTrue(exportedTexture.LoadImage(exportedBytes)); // Always true ?
Assert.AreEqual(srcTex.width, exportedTexture.width);
Assert.AreEqual(srcTex.height, exportedTexture.height);
return(exportedTexture);
}
public static TextureItem ImportTexture(glTF gltf, int index)
{
var image = gltf.images[index];
if (string.IsNullOrEmpty(image.uri))
{
// use buffer view
var texture = new Texture2D(2, 2);
texture.name = string.Format("buffer#{0:00}", index);
var byteSegment = gltf.GetViewBytes(image.bufferView);
var bytes = byteSegment.Array.Skip(byteSegment.Offset).Take(byteSegment.Count).ToArray();
texture.LoadImage(bytes, true);
return(new TextureItem(texture, index, false));
}
#if UNITY_EDITOR
else if (gltf.baseDir.StartsWith("Assets"))
{
// local folder
var path = Path.Combine(gltf.baseDir, image.uri);
path = path.Replace("%20", " ");
var texture = UnityEditor.AssetDatabase.LoadAssetAtPath <Texture2D>(path);
texture.name = Path.GetFileNameWithoutExtension(path);
return(new TextureItem(texture, index, true));
}
#endif
else
{
// external
var path = Path.Combine(gltf.baseDir, image.uri);
var bytes = File.ReadAllBytes(path);
var texture = new Texture2D(2, 2);
texture.name = Path.GetFileNameWithoutExtension(path);
texture.LoadImage(bytes);
return(new TextureItem(texture, index, true));
}
}
