public MeshContext ReadMesh(ImporterContext ctx, int meshIndex)
{
var gltfMesh = ctx.GLTF.meshes[meshIndex];
glTFAttributes lastAttributes = null;
var sharedAttributes = true;
foreach (var prim in gltfMesh.primitives)
{
if (lastAttributes != null && !prim.attributes.Equals(lastAttributes))
{
sharedAttributes = false;
break;
}
lastAttributes = prim.attributes;
}
var meshContext = sharedAttributes
? _ImportMeshSharingVertexBuffer(ctx, gltfMesh)
: _ImportMeshIndependentVertexBuffer(ctx, gltfMesh)
;
meshContext.name = gltfMesh.name;
if (string.IsNullOrEmpty(meshContext.name))
{
meshContext.name = string.Format("UniGLTF import#{0}", meshIndex);
}
return(meshContext);
}
public void AttributesTest()
{
var model = new glTFAttributes
{
POSITION = 0,
};
var json = model.ToJson();
Assert.AreEqual(@"{""POSITION"":0}", json);
Debug.Log(json);
var c = new JsonSchemaValidationContext("")
{
EnableDiagnosisForNotRequiredFields = true,
};
var json2 = JsonSchema.FromType <glTFAttributes>().Serialize(model, c);
Assert.AreEqual(json, json2);
}
static glTFMesh ExportPrimitives(glTF gltf, int bufferIndex,
string rendererName,
Mesh mesh, Material[] materials,
List <Material> unityMaterials)
{
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.normalized.ReverseZ()).ToArray(), glBufferTarget.ARRAY_BUFFER);
#if GLTF_EXPORT_TANGENTS
var tangentAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, mesh.tangents.Select(y => y.ReverseZ()).ToArray(), glBufferTarget.ARRAY_BUFFER);
#endif
var uvAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, mesh.uv.Select(y => y.ReverseUV()).ToArray(), glBufferTarget.ARRAY_BUFFER);
var colorAccessorIndex = gltf.ExtendBufferAndGetAccessorIndex(bufferIndex, mesh.colors, 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 GLTF_EXPORT_TANGENTS
if (tangentAccessorIndex != -1)
{
attributes.TANGENT = tangentAccessorIndex;
}
#endif
if (uvAccessorIndex != -1)
{
attributes.TEXCOORD_0 = uvAccessorIndex;
}
if (colorAccessorIndex != -1)
{
attributes.COLOR_0 = colorAccessorIndex;
}
if (weightAccessorIndex != -1)
{
attributes.WEIGHTS_0 = weightAccessorIndex;
}
if (jointsAccessorIndex != -1)
{
attributes.JOINTS_0 = jointsAccessorIndex;
}
var gltfMesh = 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);
if (j >= materials.Length)
{
Debug.LogWarningFormat("{0}.materials is not enough", rendererName);
break;
}
gltfMesh.primitives.Add(new glTFPrimitives
{
attributes = attributes,
indices = indicesAccessorIndex,
mode = 4, // triangles ?
material = unityMaterials.IndexOf(materials[j])
});
}
return(gltfMesh);
}