public static int ExportTexture(glTF gltf, int bufferIndex, Texture texture, glTFTextureTypes textureType)
{
var bytesWithMime = GetBytesWithMime(texture, textureType);;
// add view
var view = gltf.buffers[bufferIndex].Append(bytesWithMime.Bytes, glBufferTarget.NONE);
var viewIndex = gltf.AddBufferView(view);
// add image
var imageIndex = gltf.images.Count;
gltf.images.Add(new glTFImage
{
name = texture.name,
bufferView = viewIndex,
mimeType = bytesWithMime.Mime,
});
// add sampler
var samplerIndex = gltf.samplers.Count;
var sampler = TextureSamplerUtil.Export(texture);
gltf.samplers.Add(sampler);
// add texture
gltf.textures.Add(new glTFTexture
{
sampler = samplerIndex,
source = imageIndex,
});
return(imageIndex);
}
/// <summary>
/// gltf に texture を足す
///
/// * textures
/// * samplers
/// * images
/// * bufferViews
///
/// を更新し、textures の index を返す
///
/// </summary>
/// <param name="gltf"></param>
/// <param name="bufferIndex"></param>
/// <param name="texture"></param>
/// <returns>gltf texture index</returns>
public static int PushGltfTexture(this glTF gltf, int bufferIndex, Texture2D texture)
{
var bytesWithMime = GetBytesWithMime(texture);
// add view
var view = gltf.buffers[bufferIndex].Append(bytesWithMime.bytes, glBufferTarget.NONE);
var viewIndex = gltf.AddBufferView(view);
// add image
var imageIndex = gltf.images.Count;
gltf.images.Add(new glTFImage
{
name = GetTextureParam.RemoveSuffix(texture.name),
bufferView = viewIndex,
mimeType = bytesWithMime.mine,
});
// add sampler
var samplerIndex = gltf.samplers.Count;
var sampler = TextureSamplerUtil.Export(texture);
gltf.samplers.Add(sampler);
// add texture
var textureIndex = gltf.textures.Count;
gltf.textures.Add(new glTFTexture
{
sampler = samplerIndex,
source = imageIndex,
});
return(textureIndex);
}
public static int ExportTexture(glTF gltf, int bufferIndex, Texture texture)
{
var bytesWithPath = new BytesWithPath(texture);;
// add view
var view = gltf.buffers[bufferIndex].Append(bytesWithPath.Bytes, glBufferTarget.NONE);
var viewIndex = gltf.AddBufferView(view);
// add image
var imageIndex = gltf.images.Count;
gltf.images.Add(new glTFImage
{
name = texture.name,
bufferView = viewIndex,
mimeType = bytesWithPath.Mime,
});
// add sampler
var filter = default(glFilter);
switch (texture.filterMode)
{
case FilterMode.Point:
filter = glFilter.NEAREST;
break;
default:
filter = glFilter.LINEAR;
break;
}
var wrap = default(glWrap);
switch (texture.wrapMode)
{
case TextureWrapMode.Clamp:
wrap = glWrap.CLAMP_TO_EDGE;
break;
case TextureWrapMode.Repeat:
wrap = glWrap.REPEAT;
break;
#if UNITY_2017_OR_NEWER
case TextureWrapMode.Mirror:
wrap = glWrap.MIRRORED_REPEAT;
break;
#endif
default:
throw new NotImplementedException();
}
var samplerIndex = gltf.samplers.Count;
gltf.samplers.Add(new glTFTextureSampler
{
magFilter = filter,
minFilter = filter,
wrapS = wrap,
wrapT = wrap,
});
// add texture
gltf.textures.Add(new glTFTexture
{
sampler = samplerIndex,
source = imageIndex,
});
return(imageIndex);
}
public static Exported FromGameObject(glTF gltf, GameObject go)
{
var bytesBuffer = new ArrayByteBuffer();
var bufferIndex = gltf.AddBuffer(bytesBuffer);
var unityNodes = go.transform.Traverse()
.Skip(1) // exclude root object for the symmetry with the importer
.ToList();
#region Material
var unityMaterials = unityNodes.SelectMany(x => x.GetSharedMaterials()).Where(x => x != null).Distinct().ToList();
var unityTextures = unityMaterials.SelectMany(x => x.GetTextures()).Where(x => x != null).Distinct().ToList();
for (int i = 0; i < unityTextures.Count; ++i)
{
var texture = unityTextures[i];
var bytesWithPath = new BytesWithPath(texture);;
// add view
var view = gltf.buffers[bufferIndex].Storage.Extend(bytesWithPath.Bytes, glBufferTarget.NONE);
var viewIndex = gltf.AddBufferView(view);
// add image
var imageIndex = gltf.images.Count;
gltf.images.Add(new glTFImage
{
bufferView = viewIndex,
mimeType = bytesWithPath.Mime,
});
// add sampler
var filter = default(glFilter);
switch (texture.filterMode)
{
case FilterMode.Point:
filter = glFilter.NEAREST;
break;
default:
filter = glFilter.LINEAR;
break;
}
var wrap = default(glWrap);
switch (texture.wrapMode)
{
case TextureWrapMode.Clamp:
wrap = glWrap.CLAMP_TO_EDGE;
break;
case TextureWrapMode.Repeat:
wrap = glWrap.REPEAT;
break;
#if UNITY_2017_OR_NEWER
case TextureWrapMode.Mirror:
wrap = glWrap.MIRRORED_REPEAT;
break;
#endif
default:
throw new NotImplementedException();
}
var samplerIndex = gltf.samplers.Count;
gltf.samplers.Add(new glTFTextureSampler
{
magFilter = filter,
minFilter = filter,
wrapS = wrap,
wrapT = wrap,
});
// add texture
gltf.textures.Add(new glTFTexture
{
sampler = samplerIndex,
source = imageIndex,
});
}
gltf.materials = unityMaterials.Select(x => ExportMaterial(x, unityTextures)).ToList();
#endregion
#region Meshes
var unityMeshes = unityNodes
.Select(x => new MeshWithRenderer
{
Mesh = x.GetSharedMesh(),
Rendererer = x.GetComponent <Renderer>(),
})
.Where(x => x.Mesh != null)
.ToList();
for (int i = 0; i < unityMeshes.Count; ++i)
{
var x = unityMeshes[i];
var mesh = x.Mesh;
var materials = x.Rendererer.sharedMaterials;
var positions = mesh.vertices.Select(y => y.ReverseZ()).ToArray();
var positionAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, positions, glBufferTarget.ARRAY_BUFFER);
gltf.accessors[positionAccessorIndex].min = positions.Aggregate(positions[0], (a, b) => new Vector3(Mathf.Min(a.x, b.x), Math.Min(a.y, b.y), Mathf.Min(a.z, b.z))).ToArray();
gltf.accessors[positionAccessorIndex].max = positions.Aggregate(positions[0], (a, b) => new Vector3(Mathf.Max(a.x, b.x), Math.Max(a.y, b.y), Mathf.Max(a.z, b.z))).ToArray();
var normalAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, mesh.normals.Select(y => y.ReverseZ()).ToArray(), glBufferTarget.ARRAY_BUFFER);
var tangentAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, mesh.tangents.Select(y => y.ReverseZ()).ToArray(), glBufferTarget.ARRAY_BUFFER);
var colorAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, mesh.colors.Select(y => (Vector4)y).ToArray(), glBufferTarget.ARRAY_BUFFER);
var uvAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, mesh.uv.Select(y => y.ReverseY()).ToArray(), glBufferTarget.ARRAY_BUFFER);
var boneweights = mesh.boneWeights;
var weightAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, boneweights.Select(y => new Vector4(y.weight0, y.weight1, y.weight2, y.weight3)).ToArray(), glBufferTarget.ARRAY_BUFFER);
var jointsAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, boneweights.Select(y => new UShort4((ushort)y.boneIndex0, (ushort)y.boneIndex1, (ushort)y.boneIndex2, (ushort)y.boneIndex3)).ToArray(), glBufferTarget.ARRAY_BUFFER);
var attributes = new glTFAttributes
{
POSITION = positionAccessorIndex,
};
if (normalAccessorIndex != -1)
{
attributes.NORMAL = normalAccessorIndex;
}
if (tangentAccessorIndex != -1)
{
attributes.TANGENT = tangentAccessorIndex;
}
if (colorAccessorIndex != -1)
{
attributes.COLOR_0 = colorAccessorIndex;
}
if (uvAccessorIndex != -1)
{
attributes.TEXCOORD_0 = uvAccessorIndex;
}
if (weightAccessorIndex != -1)
{
attributes.WEIGHTS_0 = weightAccessorIndex;
}
if (jointsAccessorIndex != -1)
{
attributes.JOINTS_0 = jointsAccessorIndex;
}
gltf.meshes.Add(new glTFMesh(mesh.name));
for (int j = 0; j < mesh.subMeshCount; ++j)
{
var indices = TriangleUtil.FlipTriangle(mesh.GetIndices(j)).Select(y => (uint)y).ToArray();
var indicesAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, indices, glBufferTarget.ELEMENT_ARRAY_BUFFER);
gltf.meshes.Last().primitives.Add(new glTFPrimitives
{
attributes = attributes,
indices = indicesAccessorIndex,
mode = 4, // triangels ?
//material = unityMaterials.IndexOf(materials[j])
material = unityMaterials.IndexOf(materials[0]) // JIA change for Maquette image entity
});
}
if (mesh.blendShapeCount > 0)
{
for (int j = 0; j < mesh.blendShapeCount; ++j)
{
var blendShapeVertices = mesh.vertices;
var blendShpaeNormals = mesh.normals;
var blendShapeTangents = mesh.tangents.Select(y => (Vector3)y).ToArray();
var blendShapeColors = mesh.colors.Select(y => (Vector4)y).ToArray();
var k = mesh.GetBlendShapeFrameCount(j);
mesh.GetBlendShapeFrameVertices(j, k - 1, blendShapeVertices, blendShpaeNormals, null);
var blendShapePositionAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex,
blendShapeVertices.Select(y => y.ReverseZ()).ToArray(), glBufferTarget.ARRAY_BUFFER);
var blendShapeNormalAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex,
blendShpaeNormals.Select(y => y.ReverseZ()).ToArray(), glBufferTarget.ARRAY_BUFFER);
var blendShapeTangentAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex,
blendShapeTangents.Select(y => y.ReverseZ()).ToArray(), glBufferTarget.ARRAY_BUFFER);
var blendShapeColorAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex,
blendShapeColors.ToArray(), glBufferTarget.ARRAY_BUFFER);
//
// first primitive has whole blendShape
//
gltf.meshes.Last().primitives[0].targets.Add(new glTFAttributes
{
POSITION = blendShapePositionAccessorIndex,
NORMAL = blendShapeNormalAccessorIndex,
TANGENT = blendShapeTangentAccessorIndex,
COLOR_0 = blendShapeColorAccessorIndex,
});
}
}
}
#endregion
#region Skins
var unitySkins = unityNodes
.Select(x => x.GetComponent <SkinnedMeshRenderer>()).Where(x => x != null)
.ToList();
gltf.nodes = unityNodes.Select(x => ExportNode(x, unityNodes, unityMeshes.Select(y => y.Mesh).ToList(), unitySkins)).ToList();
gltf.scenes = new List <gltfScene>
{
new gltfScene
{
nodes = go.transform.GetChildren().Select(x => unityNodes.IndexOf(x)).ToArray(),
}
};
foreach (var x in unitySkins)
{
var matrices = x.sharedMesh.bindposes.Select(y => y.ReverseZ()).ToArray();
var accessor = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, matrices, glBufferTarget.NONE);
var skin = new glTFSkin
{
inverseBindMatrices = accessor,
joints = x.bones.Select(y => unityNodes.IndexOf(y)).ToArray(),
skeleton = unityNodes.IndexOf(x.rootBone),
};
var skinIndex = gltf.skins.Count;
gltf.skins.Add(skin);
foreach (var z in unityNodes.Where(y => y.Has(x)))
{
var nodeIndex = unityNodes.IndexOf(z);
gltf.nodes[nodeIndex].skin = skinIndex;
}
}
#endregion
#if UNITY_EDITOR
#region Animations
var animation = go.GetComponent <Animation>();
if (animation != null)
{
foreach (AnimationState state in animation)
{
var animationWithCurve = ExportAnimation(state.clip, go.transform, unityNodes);
foreach (var kv in animationWithCurve.SamplerMap)
{
var sampler = animationWithCurve.Animation.samplers[kv.Key];
var inputAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, kv.Value.Input);
sampler.input = inputAccessorIndex;
var outputAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, kv.Value.Output);
sampler.output = outputAccessorIndex;
// modify accessors
var outputAccessor = gltf.accessors[outputAccessorIndex];
var channel = animationWithCurve.Animation.channels.First(x => x.sampler == kv.Key);
switch (glTFAnimationTarget.GetElementCount(channel.target.path))
{
case 3:
outputAccessor.type = "VEC3";
outputAccessor.count /= 3;
break;
case 4:
outputAccessor.type = "VEC4";
outputAccessor.count /= 4;
break;
default:
throw new NotImplementedException();
}
}
gltf.animations.Add(animationWithCurve.Animation);
}
}
#endregion
#endif
// glb buffer
gltf.buffers[bufferIndex].UpdateByteLength();
return(new Exported
{
Meshes = unityMeshes,
Nodes = unityNodes.Select(x => x.transform).ToList(),
Materials = unityMaterials,
Textures = unityTextures,
});
}
