public static VertexData getVertexData(Mesh mesh, int index, WXMeshVertexLayout vertexLayout)
{
VertexData result = default(VertexData);
result.index = index;
result.vertice = mesh.vertices[index];
if (vertexLayout.NORMAL)
{
result.normal = mesh.normals[index];
}
else
{
result.normal = default(Vector3);
}
if (vertexLayout.COLOR)
{
result.color = mesh.colors[index];
}
else
{
result.color = default(Color);
}
if (vertexLayout.UV)
{
result.uv = mesh.uv[index];
}
else
{
result.uv = default(Vector2);
}
if (vertexLayout.UV1)
{
result.uv2 = mesh.uv2[index];
}
else
{
result.uv2 = default(Vector2);
}
if (vertexLayout.BONE)
{
BoneWeight boneWeight = mesh.boneWeights[index];
result.boneWeight.x = boneWeight.weight0;
result.boneWeight.y = boneWeight.weight1;
result.boneWeight.z = boneWeight.weight2;
result.boneWeight.w = boneWeight.weight3;
result.boneIndex.x = (float)boneWeight.boneIndex0;
result.boneIndex.y = (float)boneWeight.boneIndex1;
result.boneIndex.z = (float)boneWeight.boneIndex2;
result.boneIndex.w = (float)boneWeight.boneIndex3;
}
else
{
result.boneWeight = default(Vector4);
result.boneIndex = default(Vector4);
}
if (vertexLayout.TANGENT)
{
result.tangent = mesh.tangents[index];
}
else
{
result.tangent = default(Vector4);
}
return(result);
}
private byte[] WriteMeshFile(ref JSONObject metadata)
{
MemoryStream fileStream = new MemoryStream();
//ushort subMeshCount = (ushort)mesh.subMeshCount;
string item = meshName;
// 分析vertexLayout
WXMeshVertexLayout vertexLayout = new WXMeshVertexLayout(mesh);
List <Transform> bones = new List <Transform>();
for (int j = 0; j < renderer.bones.Length; j++)
{
Transform item2 = renderer.bones[j];
if (bones.IndexOf(item2) == -1)
{
bones.Add(item2);
}
}
//List<VertexData> vertexDatas = new List<VertexData>();
//List<VertexData> boneGroupVertex = new List<VertexData>();
//List<VertexData> vertexDataQueue = new List<VertexData>();
//int[] positionInBoneGroup = new int[3];
//List<int> indiceList = new List<int>();
//List<int> allBoneIndexes = new List<int>();
//List<int> vertexUsingBone = new List<int>();
//VertexData vertexData;
//for (int i = 0; i < subMeshCount; i++)
//{
// int[] indices = mesh.GetIndices(i);
// for (int indiceIter = 0; indiceIter < indices.Length; indiceIter += 3)
// {
// // indice start
// for (int k = 0; k < 3; k++)
// {
// int indiceIndex = indiceIter + k;
// int vertexIndex = indices[indiceIndex];
// positionInBoneGroup[k] = -1;
// int ii = 0;
// while (ii < boneGroupVertex.Count)
// {
// if (boneGroupVertex[ii].index == vertexIndex)
// {
// positionInBoneGroup[k] = ii;
// break;
// }
// ii++;
// continue;
// }
// if (positionInBoneGroup[k] == -1)
// {
// vertexData = getVertexData(mesh, vertexIndex, vertexLayout);
// vertexDataQueue.Add(vertexData);
// // 每个点最多关联4根骨骼，所以遍历4下
// for (ii = 0; ii < 4; ii++)
// {
// float bone = vertexData.boneIndex[ii];
// if (allBoneIndexes.IndexOf((int)bone) == -1 && vertexUsingBone.IndexOf((int)bone) == -1)
// {
// vertexUsingBone.Add((int)bone);
// }
// }
// }
// }
// // 没到达最大骨骼数 目前不知道这个24最大骨骼限制是干嘛用的
// if (allBoneIndexes.Count + vertexUsingBone.Count <= MaxBoneCount)
// {
// for (int l = 0; l < vertexUsingBone.Count; l++)
// {
// allBoneIndexes.Add(vertexUsingBone[l]);
// }
// int num8 = 1;
// for (int l = 0; l < 3; l++)
// {
// if (positionInBoneGroup[l] == -1)
// {
// indiceList.Add(vertexDatas.Count + boneGroupVertex.Count - 1 + num8++);
// }
// else
// {
// indiceList.Add(vertexDatas.Count + positionInBoneGroup[l]);
// }
// }
// for (int l = 0; l < vertexDataQueue.Count; l++)
// {
// boneGroupVertex.Add(vertexDataQueue[l]);
// }
// }
// else
// {
// for (int l = 0; l < boneGroupVertex.Count; l++)
// {
// vertexDatas.Add(boneGroupVertex[l]);
// }
// // 回退一位？
// indiceIter -= 3;
// boneGroupVertex = new List<VertexData>();
// allBoneIndexes = new List<int>();
// }
// // 最后一个face了
// if (indiceIter + 3 == indices.Length)
// {
// for (int l = 0; l < boneGroupVertex.Count; l++)
// {
// vertexDatas.Add(boneGroupVertex[l]);
// }
// boneGroupVertex = new List<VertexData>();
// allBoneIndexes = new List<int>();
// }
// vertexUsingBone = new List<int>();
// vertexDataQueue = new List<VertexData>();
// // indice end
// }
//}
long vertexStart = 0L;
long vertexLength = 0L;
long indiceStart = 0L;
long indiceLength = 0L;
long boneEndPosition = 0L;
// 记录vertexBuffer在总buffer里的起始位置,一般是0
vertexStart = fileStream.Position;
// 用于算包围球，计算模型的重心（所有点的位置均值）
Vector3 vertexPositionAddup = new Vector3(0, 0, 0);
// 遍历mesh里的所有定点
for (int j = 0; j < mesh.vertexCount; j++)
{
Vector3 vector = mesh.vertices[j];
// 写入position
wxFileUtil.WriteData(fileStream, vector.x * -1f, vector.y, vector.z);
// 统计position，用于算包围盒
vertexPositionAddup.Set(vertexPositionAddup.x + vector.x * -1f, vertexPositionAddup.y + vector.y, vertexPositionAddup.z + vector.z);
// 如果vertexLayout有normal，写入normal
if (vertexLayout.NORMAL)
{
Vector3 vector2 = mesh.normals[j];
wxFileUtil.WriteData(fileStream, vector2.x * -1f, vector2.y, vector2.z);
}
// 如果vertexLayout有color，写入color
if (vertexLayout.COLOR)
{
Color color = mesh.colors[j];
wxFileUtil.WriteData(fileStream, color.r, color.g, color.b, color.a);
}
// 如果vertexLayout有uv，写入uv
if (vertexLayout.UV)
{
Vector2 vector3 = mesh.uv[j];
wxFileUtil.WriteData(fileStream, vector3.x, vector3.y * -1f + 1f);
}
// 如果vertexLayout有uv1，写入uv1
if (vertexLayout.UV1)
{
Vector2 vector4 = mesh.uv2[j];
wxFileUtil.WriteData(fileStream, vector4.x, vector4.y * -1f + 1f);
}
if (vertexLayout.BONE)
{
BoneWeight boneWeight = mesh.boneWeights[j];
wxFileUtil.WriteData(
fileStream,
boneWeight.weight0,
boneWeight.weight1,
boneWeight.weight2,
boneWeight.weight3
);
wxFileUtil.WriteData(
fileStream,
(float)boneWeight.boneIndex0,
(float)boneWeight.boneIndex1,
(float)boneWeight.boneIndex2,
(float)boneWeight.boneIndex3
);
}
// 如果vertexLayout有tangent，写入tangent
if (vertexLayout.TANGENT)
{
Vector4 vector5 = mesh.tangents[j];
wxFileUtil.WriteData(fileStream, vector5.x * -1f, vector5.y, vector5.z, vector5.w);
}
}
// 记录vertexBuffer在buffer里的结束位置
vertexLength = fileStream.Position - vertexStart;
// 记录indiceBuffer在buffer里的起始位置
indiceStart = fileStream.Position;
// indiceBuffer指的是给模型绘制面时，每个面所用的顶点index。在unity里叫triangles
int[] triangles = mesh.triangles;
for (int j = 0; j < triangles.Length; j++)
{
wxFileUtil.WriteData(fileStream, (ushort)triangles[j]);
}
// 记录indexBuffer在buffer里的结束位置
indiceLength = fileStream.Position - indiceStart;
// 因为读取的时候是根据4位来读的所以末尾补0
long isFour = indiceLength % 4;
if (isFour != 0)
{
wxFileUtil.WriteData(fileStream, (ushort)0.0);
}
long boneStartPosition = fileStream.Position;
if (mesh.bindposes != null && mesh.bindposes.Length != 0)
{
Matrix4x4[] bonePoses = new Matrix4x4[mesh.bindposes.Length];
for (int i = 0; i < mesh.bindposes.Length; i++)
{
bonePoses[i] = mesh.bindposes[i];
bonePoses[i] = bonePoses[i].inverse;
Vector3 s = default(Vector3);
Quaternion q = default(Quaternion);
Vector3 pos = default(Vector3);
MathUtil.Decompose(bonePoses[i].transpose, out s, out q, out pos);
pos.x *= -1f;
q.x *= -1f;
q.w *= -1f;
bonePoses[i] = Matrix4x4.TRS(pos, q, s);
}
for (int i = 0; i < mesh.bindposes.Length; i++)
{
Matrix4x4 matrix4x = bonePoses[i];
}
for (int i = 0; i < mesh.bindposes.Length; i++)
{
Matrix4x4 inverse = bonePoses[i].inverse;
for (int j = 0; j < 16; j++)
{
wxFileUtil.WriteData(fileStream, inverse[j]);
}
}
boneEndPosition = fileStream.Position;
}
long bonePoseLength = boneEndPosition - boneStartPosition;
fileStream.Close();
metadata.AddField("indiceFormat", 1); // BIT16 = 1,BIT32 = 2
metadata.AddField("vertexLayout", vertexLayout.GetLayoutString()); //"POSITION,NORMAL,COLOR,UV,BLENDWEIGHT,BLENDINDICES,TANGENT",
metadata.AddField("vertexStart", 0);
metadata.AddField("vertexLength", vertexLength);
metadata.AddField("indiceStart", vertexLength); // indice的偏移量
metadata.AddField("indiceLength", indiceLength); // indice的长度
metadata.AddField("bonePoseStart", boneStartPosition);
metadata.AddField("bonePoseLength", bonePoseLength);
metadata.AddField("capsule", GetCapsule());
bool succ = false;
JSONObject bonesObject = GetSkinPaths(renderer.sharedMesh.name, ref succ);
metadata.AddField("rootBone", bonesObject.GetField("root"));
metadata.AddField("bones", bonesObject.GetField("bones"));
metadata.AddField("version", 1);
// 加入submesh
JSONObject subMeshs = new JSONObject(JSONObject.Type.ARRAY);
#if !UNITY_2017_1_OR_NEWER
int indexStart = 0;
#endif
ushort subMeshCount = (ushort)mesh.subMeshCount;
for (int i = 0; i < subMeshCount; i++)
{
JSONObject subMeshObj = new JSONObject(JSONObject.Type.OBJECT);
#if !UNITY_2017_1_OR_NEWER
subMeshObj.AddField("start", indexStart);
subMeshObj.AddField("length", mesh.GetIndices(i).Length);
indexStart += mesh.GetIndices(i).Length;
#else
subMeshObj.AddField("start", mesh.GetIndexStart(i));
subMeshObj.AddField("length", mesh.GetIndexCount(i));
#endif
subMeshs.Add(subMeshObj);
}
// submesh一般指的是mesh里的其中一部分，所以用indiceBuffer的区间表示
metadata.AddField("subMeshs", subMeshs);
return(fileStream.ToArray());
}
private byte[] WriteMeshFile(ref JSONObject metadata)
{
MemoryStream fileStream = new MemoryStream();
string meshName = mesh.name;
WXMeshVertexLayout vertexLayout = new WXMeshVertexLayout(mesh);
ushort subMeshCount = (ushort)mesh.subMeshCount;
long vertexStart = 0L;
long vertexLength = 0L;
long indiceStart = 0L;
long indiceLength = 0L;
vertexStart = fileStream.Position;
Vector3 vertexPositionMax = new Vector3(0, 0, 0);
for (int j = 0; j < mesh.vertexCount; j++)
{
Vector3 vector = mesh.vertices[j];
wxFileUtil.WriteData(fileStream, vector.x * -1f, vector.y, vector.z);
vertexPositionMax.Set(vertexPositionMax.x + vector.x * -1f, vertexPositionMax.y + vector.y, vertexPositionMax.z + vector.z);
if (vertexLayout.NORMAL)
{
Vector3 vector2 = mesh.normals[j];
wxFileUtil.WriteData(fileStream, vector2.x * -1f, vector2.y, vector2.z);
}
if (vertexLayout.COLOR)
{
Color color = mesh.colors[j];
wxFileUtil.WriteData(fileStream, color.r, color.g, color.b, color.a);
}
if (vertexLayout.UV)
{
Vector2 vector3 = mesh.uv[j];
wxFileUtil.WriteData(fileStream, vector3.x, vector3.y * -1f + 1f);
}
if (vertexLayout.UV1)
{
Vector2 vector4 = mesh.uv2[j];
wxFileUtil.WriteData(fileStream, vector4.x, vector4.y * -1f + 1f);
}
if (vertexLayout.TANGENT)
{
Vector4 vector5 = mesh.tangents[j];
wxFileUtil.WriteData(fileStream, vector5.x * -1f, vector5.y, vector5.z, vector5.w);
}
}
vertexLength = fileStream.Position - vertexStart;
indiceStart = fileStream.Position;
int[] triangles = mesh.triangles;
for (int j = 0; j < triangles.Length; j++)
{
wxFileUtil.WriteData(fileStream, (ushort)triangles[j]);
}
indiceLength = fileStream.Position - indiceStart;
fileStream.Close();
vertexPositionMax.Set(vertexPositionMax.x / mesh.vertices.Length, vertexPositionMax.y / mesh.vertices.Length, vertexPositionMax.z / mesh.vertices.Length);
float capsuleRadius = CalCapsuleRadius(vertexPositionMax, mesh.vertices);
JSONObject capsule = new JSONObject(JSONObject.Type.OBJECT);
capsule.AddField("x", vertexPositionMax.x);
capsule.AddField("y", vertexPositionMax.y);
capsule.AddField("z", vertexPositionMax.z);
capsule.AddField("radius", capsuleRadius);
metadata.AddField("indiceFormat", 1); // BIT16 = 1,BIT32 = 2
metadata.AddField("vertexLayout", vertexLayout.GetLayoutString()); //"POSITION,NORMAL,COLOR,UV,BLENDWEIGHT,BLENDINDICES,TANGENT",
metadata.AddField("vertexStart", 0);
metadata.AddField("vertexLength", vertexLength);
metadata.AddField("indiceStart", vertexLength); // indice的偏移量
metadata.AddField("indiceLength", indiceLength); // indice的长度
metadata.AddField("capsule", capsule);
metadata.AddField("version", 1);
JSONObject subMeshs = new JSONObject(JSONObject.Type.ARRAY);
#if !UNITY_2017_1_OR_NEWER
int indexStart = 0;
#endif
for (int i = 0; i < subMeshCount; i++)
{
JSONObject subMeshObj = new JSONObject(JSONObject.Type.OBJECT);
#if UNITY_2017_1_OR_NEWER
subMeshObj.AddField("start", mesh.GetIndexStart(i));
subMeshObj.AddField("length", mesh.GetIndexCount(i));
#else
subMeshObj.AddField("start", indexStart);
subMeshObj.AddField("length", mesh.GetIndices(i).Length);
indexStart += mesh.GetIndices(i).Length;
#endif
subMeshs.Add(subMeshObj);
}
metadata.AddField("subMeshs", subMeshs);
JSONObject boundBox = new JSONObject(JSONObject.Type.OBJECT);
JSONObject boundBoxCenter = new JSONObject(JSONObject.Type.ARRAY);
boundBoxCenter.Add(mesh.bounds.center.x);
boundBoxCenter.Add(mesh.bounds.center.y);
boundBoxCenter.Add(mesh.bounds.center.z);
JSONObject boundBoxSize = new JSONObject(JSONObject.Type.ARRAY);
boundBoxSize.Add(mesh.bounds.size.x);
boundBoxSize.Add(mesh.bounds.size.y);
boundBoxSize.Add(mesh.bounds.size.z);
boundBox.AddField("center", boundBoxCenter);
boundBox.AddField("size", boundBoxSize);
metadata.AddField("boundBox", boundBox);
return(fileStream.ToArray());
}
