/// <summary>
/// reads the OBJ file ONLY with the special format used also in the write_OBJ method
/// </summary>
/// <param name="path"></param>
/// <param name="fileNameShort"></param>
/// <param name="depthData"></param>
/// <returns></returns>
public static PointCloudVertices FromObjFile(string path, string fileNameShort)
{
string fileName = path + "\\" + fileNameShort;
if (!System.IO.File.Exists(fileName))
{
System.Diagnostics.Debug.WriteLine("File does not exist: ");
return(null);
}
double[] p3D = new double[3];
System.Collections.ArrayList lineList = new System.Collections.ArrayList();
PointCloudVertices pointCloud = new PointCloudVertices();
//int numberOfDepthPointsNonZero = -1;
int i = 0;
int startIndex = 0;
try
{
string[] lines = System.IO.File.ReadAllLines(fileName);
//ignore the comment lines
for (i = 0; i < lines.Length; i++)
{
if (!lines[i].Contains('#'))
{
startIndex = i;
break;
}
}
for (i = startIndex; i < lines.GetLength(0); i++)
//for (i = lines.Length -1 ; i >= startIndex + 1; i--)
{
string[] arrStr1 = lines[i].Split(new Char[] { ' ' });
if (lines[i].Contains('#') || arrStr1.Length < 4)
{
//ignore empty and comment lines
continue;
}
if (arrStr1[0] == "vn")
{
//ignore vector normals for now
}
if (arrStr1[0] == "v")
{
if (arrStr1.Length < 7)
{
System.Windows.Forms.MessageBox.Show("Error reading file " + fileNameShort + " in line i");
}
else
{
for (int j = 0; j < 3; j++)
{
p3D[j] = Convert.ToSingle(arrStr1[j + 1], CultureInfo);
}
Vector3d vec = new Vector3d(p3D[0], p3D[1], p3D[2]);
float[] color = new float[4] {
Convert.ToSingle(arrStr1[4], CultureInfo), Convert.ToSingle(arrStr1[5], CultureInfo), Convert.ToSingle(arrStr1[6], CultureInfo), 1f
};
System.Drawing.Color c = System.Drawing.Color.White;
c = c.FromFloatsARGB(color[3], color[0], color[1], color[2]);
Vertex v = new Vertex(vec, c);
pointCloud.Add(v);
//if (vec.Z > 0)
//{
// numberOfDepthPointsNonZero++;
//}
}
}
}
}
catch (Exception err)
{
System.Windows.Forms.MessageBox.Show("Read_OBJ: read error in file : " + fileNameShort + " : at line: " + i.ToString() + " ; " + err.Message);
}
return(pointCloud);
}
