int CheckMeshDataCount(SenceHierarchyInfo.Object3DMesh inObj)
{
int finalCount = inObj.mesh.vertexCount * 3;
if (inObj.exportUV)
{
finalCount += inObj.mesh.uv.Length * 2;
}
if (inObj.exportUV2)
{
finalCount += inObj.mesh.uv2.Length * 2;
}
return(finalCount);
}
byte[] GenOneGameObjectBinBuffer(SenceHierarchyInfo.Object3DMesh obj3d, int LastBinCount)
{
string meshName;
List <byte> finalBinary = new List <byte>();
List <float> verticesList = new List <float>();
List <float> normalList = new List <float>();
List <float> uvList = new List <float>();
List <float> uv2List = new List <float>();
List <float> worldPosAndScaleList = new List <float>();
List <float> tangentsList = new List <float>();
Vector3[] vertices;
Vector3[] normals;
Vector2[] uv;
Vector2[] uv2;
int[] index;
UInt16[] reorderIndex;
meshName = obj3d.mesh.name;
vertices = obj3d.mesh.vertices;
normals = obj3d.mesh.normals;
uv = obj3d.mesh.uv;
uv2 = obj3d.mesh.uv2;
index = obj3d.mesh.triangles;
//index的类型是Uint16 取值最大范围为65535，所以vertices的数组长度最长为65535
if (vertices.Length > 65535)
{
string log = meshName + "的模型的顶点数超过65535,请减面！";
Debug.Log(log);
Debug.LogWarning(log);
Debug.LogError(log);
}
//单物体最大面数Uint16决定了只能为21845面
reorderIndex = new UInt16[index.Length];
//反转三角形渲染顺序
for (int i = 0; i < index.Length / 3; i++)
{
reorderIndex[i * 3] = (UInt16)index[i * 3 + 2];
reorderIndex[i * 3 + 1] = (UInt16)index[i * 3 + 1];
reorderIndex[i * 3 + 2] = (UInt16)index[i * 3];
}
////////////
byte[] binaryHold;
finalBinary.AddRange(BuQuanByte(finalBinary.Count + LastBinCount, 2));
binaryHold = GetUInt16ArrayBuffer(reorderIndex);
obj3d.indexBufferPos = new int[] { finalBinary.Count + LastBinCount, binaryHold.Length / 2 };
finalBinary.AddRange(binaryHold);
for (int i = 0; i < vertices.Length; i++)
{
verticesList.Add(vertices[i].x);
verticesList.Add(vertices[i].y);
verticesList.Add(-vertices[i].z);
}
finalBinary.AddRange(BuQuanByte(finalBinary.Count + LastBinCount, 4));
binaryHold = GetInt32ArrayBuffer(FloatArrayToInt32Array(verticesList.ToArray()));
obj3d.vertexBufferPos = new int[] { finalBinary.Count + LastBinCount, binaryHold.Length / 4 };
finalBinary.AddRange(binaryHold);
if (obj3d.useRealtimeLight)
{
for (int i = 0; i < normals.Length; i++)
{
normals[i].Normalize();
normalList.Add(normals[i].x);
normalList.Add(normals[i].y);
normalList.Add(-normals[i].z);
}
// finalBinary.AddRange(BuQuanByte(finalBinary.Count + LastBinCount, 2));
binaryHold = FloatArrayToInt8Arrar(normalList.ToArray());
obj3d.normalBufferPos = new int[] { finalBinary.Count + LastBinCount, binaryHold.Length / 1 };
if (obj3d.normalBufferPos[1] == 0)
{
Debug.LogError(obj3d.mesh.name + " DontHave Normal");
}
finalBinary.AddRange(binaryHold);
}
if (obj3d.exportUV)
{
for (int i = 0; i < uv.Length; i++)
{
uvList.Add(uv[i].x);
uvList.Add(uv[i].y);
}
finalBinary.AddRange(BuQuanByte(finalBinary.Count + LastBinCount, 2));
binaryHold = GetInt16ArrayBuffer(FloatArrayToInt16Array(uvList.ToArray()));
obj3d.uvBufferPos = new int[] { finalBinary.Count + LastBinCount, binaryHold.Length / 2 };
if (obj3d.uvBufferPos[1] == 0)
{
Debug.LogError(obj3d.mesh.name + "DontHave UV");
}
finalBinary.AddRange(binaryHold);
}
if (obj3d.exportUV2)
{
//unity默认的Plane没有带uv2。因为经常使用的Plane，所有将uv1复制到uv2
if (uv2.Length < 1 && obj3d.mesh.name == "Plane")
{
uv2List = uvList;
}
else
{
for (int i = 0; i < uv2.Length; i++)
{
uv2List.Add(uv2[i].x);
uv2List.Add(uv2[i].y);
}
}
finalBinary.AddRange(BuQuanByte(finalBinary.Count + LastBinCount, 2));
binaryHold = GetInt16ArrayBuffer(FloatArrayToInt16Array(uv2List.ToArray()));
obj3d.uv2BufferPos = new int[] { finalBinary.Count + LastBinCount, binaryHold.Length / 2 };
if (obj3d.uv2BufferPos[1] == 0)
{
Debug.LogError(obj3d.mesh.name + " DontHave UV2");
}
finalBinary.AddRange(binaryHold);
}
if (obj3d.mesh.colors.Length > 0)
{
for (int i = 0; i < obj3d.mesh.colors.Length; i++)
{
worldPosAndScaleList.Add(obj3d.mesh.colors[i].r);
worldPosAndScaleList.Add(obj3d.mesh.colors[i].g);
worldPosAndScaleList.Add(-obj3d.mesh.colors[i].b);
worldPosAndScaleList.Add(obj3d.mesh.colors[i].a);
}
finalBinary.AddRange(BuQuanByte(finalBinary.Count + LastBinCount, 4));
binaryHold = GetInt32ArrayBuffer(FloatArrayToInt32Array(worldPosAndScaleList.ToArray()));
obj3d.worldPosAndScalePos = new int[] { finalBinary.Count + LastBinCount, binaryHold.Length / 4 };
finalBinary.AddRange(binaryHold);
}
if (obj3d.hasWaterMat)
{
// Debug.Log("-----------------------------------");
// Debug.Log(obj3d.mesh.tangents.Length);
for (int i = 0; i < obj3d.mesh.tangents.Length; i++)
{
obj3d.mesh.tangents[i].Normalize();
tangentsList.Add(obj3d.mesh.tangents[i].x);
tangentsList.Add(obj3d.mesh.tangents[i].y);
tangentsList.Add(-obj3d.mesh.tangents[i].z);
}
finalBinary.AddRange(BuQuanByte(finalBinary.Count + LastBinCount, 4));
binaryHold = FloatArrayToInt8Arrar(tangentsList.ToArray());
obj3d.tangentsPos = new int[] { finalBinary.Count + LastBinCount, binaryHold.Length / 1 };
finalBinary.AddRange(binaryHold);
}
//这个补足四位是为了，后面压缩使用utf32进行
finalBinary.AddRange(BuQuanByte(finalBinary.Count + LastBinCount, 4));
return(finalBinary.ToArray());
}