public static ObjGeometry MergeGeometries(IEnumerable <ObjGeometry> geometries, ObjMaterial material)
{
ObjGeometry mergedGeometry = new ObjGeometry(material);
foreach (ObjGeometry item in geometries)
{
mergedGeometry.Faces.AddRange(item.Faces);
}
return(mergedGeometry);
}
public List <ObjGeometry> MergeGeometries()
{
List <ObjGeometry> geometries = new List <ObjGeometry>(Geometries);
List <ObjGeometry> merged = new List <ObjGeometry>(Geometries.Count);
while (geometries.Count > 0)
{
ObjMaterial mergedMaterial = geometries[0].Material;
List <ObjGeometry> mergingGeometries = geometries.FindAll(delegate(ObjGeometry item) {
return(item.Material == mergedMaterial);
});
merged.Add(ObjGeometry.MergeGeometries(mergingGeometries, mergedMaterial));
foreach (ObjGeometry item in mergingGeometries)
{
geometries.Remove(item);
}
}
return(merged);
}
private static void ParseFace(ObjContext objContext, string[] token)
{
if (objContext == null)
{
throw new ArgumentNullException("objContext");
}
if (token == null)
{
throw new ArgumentNullException("token");
}
if (token.Length < 3)
{
throw new ArgumentException("wrong array length", "token");
}
if (objContext.Groups.Count == 0)
{
throw new InvalidOperationException("no group");
}
ObjGroup objGroup = objContext.Groups[objContext.Groups.Count - 1];
if (objGroup.Geometries.Count == 0)
{
throw new InvalidOperationException("no geometry");
}
ObjGeometry objGeometry = objGroup.Geometries[objGroup.Geometries.Count - 1];
ObjFace objFace = new ObjFace();
foreach (string values in token)
{
string[] indices = Regex.Split(values, "/");
int[] indicesValues = Array.ConvertAll(indices, delegate(string item) {
if (String.IsNullOrEmpty(item) == false)
{
return(Int32.Parse(item, NumberFormatInfo.InvariantInfo));
}
else
{
return(Int32.MinValue);
}
});
int indexVertex = indicesValues[0];
int indexNormal = indicesValues[2];
int indexTexCoord = indicesValues[1];
ObjFaceCoord objFaceCoord = new ObjFaceCoord();
// Position
if (indexVertex < 0)
{
indexVertex = objContext.Vertices.Count + indexVertex + 1;
}
objFaceCoord.VertexIndex = indexVertex - 1;
// Normal (optional)
if (indexNormal != Int32.MinValue)
{
if (indexNormal < 0)
{
indexNormal = objContext.Normals.Count + indexNormal + 1;
}
objFaceCoord.NormalIndex = indexNormal - 1;
}
// Tex coord (optional)
if (indexTexCoord != Int32.MinValue)
{
if (indexTexCoord < 0)
{
indexTexCoord = objContext.TextureCoords.Count + indexTexCoord + 1;
}
objFaceCoord.TexCoordIndex = indexTexCoord - 1;
}
objFace.Coords.Add(objFaceCoord);
}
objGeometry.Faces.Add(objFace);
}
