public static List <GameObject> AnalyzeToGameObject(string objFilePath, bool useGlobalMaterial)
{
if (!File.Exists(objFilePath))
{
return(null);
}
var objFormatAnalyzer = new ObjFormatAnalyzer();
objFormatAnalyzer.Analyze(File.ReadAllText(objFilePath));
int length = objFormatAnalyzer.ObjFaceBeginArr.Length;//有多少个3d模型
var re = new List <GameObject>();
var sourceVertexArr = objFormatAnalyzer.VertexArr;
var sourceVertexNormalArr = objFormatAnalyzer.VertexNormalArr;
var sourceUVArr = objFormatAnalyzer.VertexTextureArr;
var faceArr = objFormatAnalyzer.FaceArr;
Debug.Log("vertex num:" + sourceVertexArr.Length);
Debug.Log("face num:" + faceArr.Length);
Debug.Log("length:" + length);
for (int objId = 0; objId < length; objId++)
{
var go = new GameObject();
go.name = objFormatAnalyzer.ObjNameArr[objId];
var skinnedMeshRenderer = go.AddComponent <SkinnedMeshRenderer>();//添加skinnedMeshRenderer
var mesh = new Mesh();
var vertexList = new List <Vector3>();
var vertexNormalList = new List <Vector3>();
var uvList = new List <Vector2>();
int faceBeginId = objFormatAnalyzer.ObjFaceBeginArr[objId];
int faceEndId = faceArr.Length;//左闭右开
if (objId < length - 1)
{
faceEndId = objFormatAnalyzer.ObjFaceBeginArr[objId + 1];
}
Debug.Log("faceBeginId: " + faceBeginId);
Debug.Log("faceEndId: " + faceEndId);
int triangleNum = 0;
for (int i = faceBeginId; i < faceEndId; i++)
{
if (faceArr[i].IsQuad)
{
triangleNum += 6;
}
else
{
triangleNum += 3;
}
}
var triangles = new int[triangleNum];
int nNum = 0;
int tNum = 0;
for (int i = faceBeginId, j = 0; i < faceEndId; i++)
{
var currentFace = faceArr[i];
var defaultVec = default(ObjFormatAnalyzer.Vector);
triangles[j] = j;
triangles[j + 1] = j + 1;
triangles[j + 2] = j + 2;
for (int k = 0; k < 3; k++)//0,1,2是一个三角形
{
var vId = currentFace.Points[k].VertexIndex - 1;
var nId = currentFace.Points[k].NormalIndex - 1;
var tId = currentFace.Points[k].TextureIndex - 1;
var vec = sourceVertexArr[vId];
vertexList.Add(new Vector3(vec.X, vec.Y, vec.Z));
vec = defaultVec;
if (nId != -1)
{
vec = sourceVertexNormalArr[nId];
nNum++;
}
vertexNormalList.Add(new Vector3(vec.X, vec.Y, vec.Z));
var uv = defaultVec;
if (tId != -1)
{
uv = sourceUVArr[tId];
tNum++;
}
uvList.Add(new Vector2(uv.X, uv.Y));
}
if (currentFace.IsQuad)
{
triangles[j + 3] = j + 3;
triangles[j + 4] = j + 4;
triangles[j + 5] = j + 5;
j += 3;
for (int k = 0; k < 4; k++)//0,2,3是一个三角形
{
if (k == 1)
{
continue;
}
var vId = currentFace.Points[k].VertexIndex - 1;
var nId = currentFace.Points[k].NormalIndex - 1;
var tId = currentFace.Points[k].TextureIndex - 1;
var vec = sourceVertexArr[vId];
vertexList.Add(new Vector3(vec.X, vec.Y, vec.Z));
vec = nId < sourceVertexNormalArr.Length ? sourceVertexNormalArr[nId] : defaultVec;
vertexNormalList.Add(new Vector3(vec.X, vec.Y, vec.Z));
var uv = tId < sourceUVArr.Length ? sourceUVArr[tId] : defaultVec;
uvList.Add(new Vector2(uv.X, uv.Y));
}
}
j += 3;
}
mesh.vertices = vertexList.ToArray();
if (nNum == 0)
{
mesh.normals = null;
}
else
{
mesh.normals = vertexNormalList.ToArray();
}
if (tNum == 0)
{
mesh.uv = null;
}
else
{
mesh.uv = uvList.ToArray();
}
Debug.Log("mesh.normals.length: " + mesh.normals.Length);
Debug.Log("mesh.uv.length: " + mesh.uv.Length);
//mesh.normals= vertexNormalList.ToArray();
//mesh.uv = uvList.ToArray();
mesh.triangles = triangles;
skinnedMeshRenderer.sharedMesh = mesh;
if (useGlobalMaterial)
{
skinnedMeshRenderer.material = new Material(GameObject.Find("ObjManager").GetComponent <ObjManager>().panelModel_PointsInformationController.GetMaterial());
}
else//使用标准material
{
skinnedMeshRenderer.material = new Material(GameObject.Find("ObjManager").GetComponent <ObjManager>().materialStandard);
}
re.Add(go);
}
return(re);
}
public static GameObject AnalyzeToGameObject(string objFilePath)
{
//if (!File.Exists(objFilePath)) return null;
var objFormatAnalyzer = new ObjFormatAnalyzer();
//objFormatAnalyzer.Analyze(File.ReadAllText(objFilePath));//传入obj文件路径
//objFormatAnalyzer.Analyze(File.ReadAllText("C:\\Users\\Administrator\\Desktop\\9186\\Garen.obj"));//传入obj文件路径
objFormatAnalyzer.Analyze(objFilePath);
var go = new GameObject();
var meshRenderer = go.AddComponent <MeshRenderer>();
var meshFilter = go.AddComponent <MeshFilter>();
var mesh = new Mesh();
var sourceVertexArr = objFormatAnalyzer.VertexArr;
var sourceUVArr = objFormatAnalyzer.VertexTextureArr;
var faceArr = objFormatAnalyzer.FaceArr;
var notQuadFaceArr = objFormatAnalyzer.FaceArr.Where(m => !m.IsQuad).ToArray();
var quadFaceArr = objFormatAnalyzer.FaceArr.Where(m => m.IsQuad).ToArray();
var vertexList = new List <Vector3>();
var uvList = new List <Vector2>();
var triangles = new int[notQuadFaceArr.Length * 3 + quadFaceArr.Length * 6];
for (int i = 0, j = 0; i < faceArr.Length; i++)
{
var currentFace = faceArr[i];
triangles[j] = j;
triangles[j + 1] = j + 1;
triangles[j + 2] = j + 2;
var vec = sourceVertexArr[currentFace.Points[0].VertexIndex - 1];
vertexList.Add(new Vector3(vec.X, vec.Y, vec.Z));
var uv = sourceUVArr[currentFace.Points[0].TextureIndex - 1];
uvList.Add(new Vector2(uv.X, uv.Y));
vec = sourceVertexArr[currentFace.Points[1].VertexIndex - 1];
vertexList.Add(new Vector3(vec.X, vec.Y, vec.Z));
uv = sourceUVArr[currentFace.Points[1].TextureIndex - 1];
uvList.Add(new Vector2(uv.X, uv.Y));
vec = sourceVertexArr[currentFace.Points[2].VertexIndex - 1];
vertexList.Add(new Vector3(vec.X, vec.Y, vec.Z));
uv = sourceUVArr[currentFace.Points[2].TextureIndex - 1];
uvList.Add(new Vector2(uv.X, uv.Y));
if (currentFace.IsQuad)
{
triangles[j + 3] = j + 3;
triangles[j + 4] = j + 4;
triangles[j + 5] = j + 5;
j += 3;
vec = sourceVertexArr[currentFace.Points[0].VertexIndex - 1];
vertexList.Add(new Vector3(vec.X, vec.Y, vec.Z));
uv = sourceUVArr[currentFace.Points[0].TextureIndex - 1];
uvList.Add(new Vector2(uv.X, uv.Y));
vec = sourceVertexArr[currentFace.Points[2].VertexIndex - 1];
vertexList.Add(new Vector3(vec.X, vec.Y, vec.Z));
uv = sourceUVArr[currentFace.Points[2].TextureIndex - 1];
uvList.Add(new Vector2(uv.X, uv.Y));
vec = sourceVertexArr[currentFace.Points[3].VertexIndex - 1];
vertexList.Add(new Vector3(vec.X, vec.Y, vec.Z));
uv = sourceUVArr[currentFace.Points[3].TextureIndex - 1];
uvList.Add(new Vector2(uv.X, uv.Y));
}
j += 3;
}
mesh.vertices = vertexList.ToArray();
mesh.uv = uvList.ToArray();
mesh.triangles = triangles;
meshFilter.mesh = mesh;
meshRenderer.material = new Material(Shader.Find("Standard"));
return(go);
}