public bool addVertexList(int objectIndex, List <Vector3> verts, List <Vector3> norms, List <int> indices)
{
if (objectIndex >= m_objects.Count)
{
return(false);
}
m_vertexPositionArray = verts;
m_vertexNormalArray = norms;
OBJObject pObject = m_objects[objectIndex];
for (int i = 0; i < indices.Count; i += 3)
{
OBJFace newFace = new OBJFace();
newFace.m_vertexIndex[0] = indices[i] + 1;
newFace.m_vertexIndex[1] = indices[i + 1] + 1;
newFace.m_vertexIndex[2] = indices[i + 2] + 1;
newFace.m_normalIndex[0] = indices[i] + 1;
newFace.m_normalIndex[1] = indices[i + 1] + 1;
newFace.m_normalIndex[2] = indices[i + 2] + 1;
pObject.m_faces.Add(newFace);
}
return(true);
}
public bool addTriangle(int objectIndex, Vector3 pos1, Vector3 pos2, Vector3 pos3)
{
if (objectIndex >= m_objects.Count)
{
return(false);
}
OBJObject pObject = m_objects[objectIndex];
// Create new face
OBJFace newFace = new OBJFace();
newFace.m_vertexIndex[0] = addUniquePosition(pos1) + 1;
newFace.m_vertexIndex[1] = addUniquePosition(pos2) + 1;
newFace.m_vertexIndex[2] = addUniquePosition(pos3) + 1;
pObject.m_faces.Add(newFace);
return(true);
}
public bool write(FileStream stream)
{
StreamWriter sw = new StreamWriter(stream);
if (stream == null)
{
return(false);
}
int i, j;
// Write out vertex position first
sw.Write("# Ensemble Studios' .Net OBJ file I/O\n");
sw.Write("\n");
// Write out vertex positions firt
int numVertexPositions = m_vertexPositionArray.Count;
if (numVertexPositions > 0)
{
for (i = 0; i < numVertexPositions; i++)
{
Vector3 vertex = m_vertexPositionArray[i];
sw.Write("v {0} {1} {2}\n", vertex.X, vertex.Z, vertex.Y);
}
sw.Write("# {0} vertices\n\n\n", numVertexPositions);
}
// Write out vertex normals
int numVertexNormals = m_vertexNormalArray.Count;
if (numVertexNormals > 0)
{
for (i = 0; i < numVertexNormals; i++)
{
Vector3 normal = m_vertexNormalArray[i];
sw.Write("vn {0} {1} {2}\n", normal.X, normal.Z, normal.Y);
}
sw.Write("# {0} vertex normals\n\n\n", numVertexNormals);
}
// Write out objects
int numObjects = m_objects.Count;
for (i = 0; i < numObjects; i++)
{
OBJObject pObject = m_objects[i];
// Write out the object name
sw.Write("g {0}\n", pObject.m_name);
// Write out object faces
int numFaces = pObject.m_faces.Count;
for (j = 0; j < numFaces; j++)
{
OBJFace face = pObject.m_faces[j];
if (face.m_vertexIndex[0] != -1)
{
sw.Write("f {0} {1} {2}\n", face.m_vertexIndex[0], face.m_vertexIndex[1], face.m_vertexIndex[2]);
}
}
sw.Write("# {0} faces\n\n\n", numFaces);
}
sw.Close();
return(true);
}
private void readElements(string file)
{
int countObject = 0;
OBJObject pCurObject = new OBJObject();
string[] input = File.ReadAllLines(file);
for (int i = 0; i < input.Length; i++)
{
string[] split = input[i].Split(new Char[] { ' ' });
switch (split[0])
{
case "v": // Plain vertex
//get and increment the current vertex
Vector3 vertex = new Vector3();
// initialize the vertex values (important if not all values are in file)
vertex.X = vertex.Y = vertex.Z = 0.0f;
//fill the values with the data in the line
vertex.X = System.Convert.ToSingle(split[1]);
vertex.Y = System.Convert.ToSingle(split[2]);
vertex.Z = System.Convert.ToSingle(split[3]);
m_vertexPositionArray.Add(vertex);
break;
case "vt": // Texture vertex
break;
case "vn": // vertex normal
break;
case "g": // new group
if (input[i].Length > 2)
{
pCurObject = m_objects[countObject++];
string[] sub = input[i].Split(new Char[] { ' ' });
m_name = sub[1];
}
break;
case "s": // new smoothing group
break;
case "f": // new face
List <vertexInfo> verts = new List <vertexInfo>();
vertexInfo vert = new vertexInfo();
vert.vp = vert.vt = vert.vn = -1;
if (split.Length < 4)
{
break;
}
for (int j = 1; j < split.Length; j++)
{
string[] v = split[j].Split(new Char[] { '/' });
if (v.Length > 1)
{
vert.vp = System.Convert.ToInt16(v[0]);
vert.vt = System.Convert.ToInt16(v[1]);
vert.vn = System.Convert.ToInt16(v[2]);
verts.Add(vert);
}
else
{
vert.vp = System.Convert.ToInt16(split[1]);
verts.Add(vert);
vert.vp = System.Convert.ToInt16(split[2]);
verts.Add(vert);
vert.vp = System.Convert.ToInt16(split[3]);
verts.Add(vert);
}
}
OBJFace newFace = new OBJFace();
pCurObject.m_faces.Add(newFace);
newFace.m_vertexIndex[0] = verts[0].vp;
newFace.m_vertexIndex[1] = verts[1].vp;
newFace.m_vertexIndex[2] = verts[2].vp;
break;
}
}
}
