| private static populateMeshStruct ( meshStruct &mesh ) : void | ||
| mesh | meshStruct | |
| return | void | |
private static void populateMeshStruct(ref meshStruct mesh)
{
StreamReader stream = File.OpenText(mesh.fileName);
string entireText = stream.ReadToEnd();
stream.Close();
using (StringReader reader = new StringReader(entireText))
{
string currentText = reader.ReadLine();
char[] splitIdentifier = { ' ' };
char[] splitIdentifier2 = { '/' };
string[] brokenString;
string[] brokenBrokenString;
int f = 0;
int f2 = 0;
int v = 0;
int vn = 0;
int vt = 0;
int vt1 = 0;
int vt2 = 0;
while (currentText != null)
{
if (!currentText.StartsWith("f ") && !currentText.StartsWith("v ") && !currentText.StartsWith("vt ") &&
!currentText.StartsWith("vn ") && !currentText.StartsWith("g ") && !currentText.StartsWith("usemtl ") &&
!currentText.StartsWith("mtllib ") && !currentText.StartsWith("vt1 ") && !currentText.StartsWith("vt2 ") &&
!currentText.StartsWith("vc ") && !currentText.StartsWith("usemap "))
{
currentText = reader.ReadLine();
if (currentText != null)
{
currentText = currentText.Replace(" ", " ");
}
}
else
{
currentText = currentText.Trim();
brokenString = currentText.Split(splitIdentifier, 50);
switch (brokenString[0])
{
case "g":
break;
case "usemtl":
break;
case "usemap":
break;
case "mtllib":
break;
case "v":
mesh.vertices[v] = new Vector3(System.Convert.ToSingle(brokenString[1]), System.Convert.ToSingle(brokenString[2]),
System.Convert.ToSingle(brokenString[3]));
v++;
break;
case "vt":
mesh.uv[vt] = new Vector2(System.Convert.ToSingle(brokenString[1]), System.Convert.ToSingle(brokenString[2]));
vt++;
break;
case "vt1":
mesh.uv[vt1] = new Vector2(System.Convert.ToSingle(brokenString[1]), System.Convert.ToSingle(brokenString[2]));
vt1++;
break;
case "vt2":
mesh.uv[vt2] = new Vector2(System.Convert.ToSingle(brokenString[1]), System.Convert.ToSingle(brokenString[2]));
vt2++;
break;
case "vn":
mesh.normals[vn] = new Vector3(System.Convert.ToSingle(brokenString[1]), System.Convert.ToSingle(brokenString[2]),
System.Convert.ToSingle(brokenString[3]));
vn++;
break;
case "vc":
break;
case "f":
int j = 1;
List<int> intArray = new List<int>();
while (j < brokenString.Length && ("" + brokenString[j]).Length > 0)
{
Vector3 temp = new Vector3();
brokenBrokenString = brokenString[j].Split(splitIdentifier2, 3); //Separate the face into individual components (vert, uv, normal)
temp.x = System.Convert.ToInt32(brokenBrokenString[0]);
if (brokenBrokenString.Length > 1) //Some .obj files skip UV and normal
{
if (brokenBrokenString[1] != "") //Some .obj files skip the uv and not the normal
{
temp.y = System.Convert.ToInt32(brokenBrokenString[1]);
}
temp.z = System.Convert.ToInt32(brokenBrokenString[2]);
}
j++;
mesh.faceData[f2] = temp;
intArray.Add(f2);
f2++;
}
j = 1;
while (j + 2 < brokenString.Length) //Create triangles out of the face data. There will generally be more than 1 triangle per face.
{
mesh.triangles[f] = intArray[0];
f++;
mesh.triangles[f] = intArray[j];
f++;
mesh.triangles[f] = intArray[j+1];
f++;
j++;
}
break;
}
currentText = reader.ReadLine();
if (currentText != null)
{
currentText = currentText.Replace(" ", " "); //Some .obj files insert double spaces, this removes them.
}
}
}
}
}
} public static Mesh ImportFile(string filePath)
{
if (!File.Exists(filePath))
{
Debug.LogError("No file was found at '" + filePath + "'");
return(null);
}
ObjImporter.meshStruct meshStruct = ObjImporter.createMeshStruct(filePath);
ObjImporter.populateMeshStruct(ref meshStruct);
Vector3[] array = new Vector3[meshStruct.faceData.Length];
Vector2[] array2 = new Vector2[meshStruct.faceData.Length];
Vector3[] array3 = new Vector3[meshStruct.faceData.Length];
int num = 0;
Vector3[] faceData = meshStruct.faceData;
for (int i = 0; i < faceData.Length; i++)
{
Vector3 vector = faceData[i];
array[num] = meshStruct.vertices[(int)vector.x - 1];
if (vector.y >= 1f)
{
array2[num] = meshStruct.uv[(int)vector.y - 1];
}
if (vector.z >= 1f)
{
array3[num] = meshStruct.normals[(int)vector.z - 1];
}
num++;
}
Mesh mesh = new Mesh();
mesh.vertices = array;
mesh.uv = array2;
mesh.normals = array3;
mesh.triangles = meshStruct.triangles;
mesh.RecalculateBounds();
return(mesh);
}