private static ThreeDSMesh.FaceGroup ParseFaceData(DataReader3DS dataSegment)
{
DataReader3DS subSegment; // will be used to read other subsegments (do not initialize yet)
ThreeDSMesh.FaceGroup group = new ThreeDSMesh.FaceGroup();
group.faces = new ThreeDSMesh.Face[dataSegment.GetUShort()];
// Read face data
for (int face = 0; face < group.faces.Length; face++)
{
group.faces[face].p1 = dataSegment.GetUShort();
group.faces[face].p2 = dataSegment.GetUShort();
group.faces[face].p3 = dataSegment.GetUShort();
// Ignore flag
dataSegment.GetUShort();
}
// Read other subsegments
subSegment = dataSegment.GetNextSubSegment();
while (subSegment != null)
{
switch ((ChunkCodes)subSegment.Tag)
{
case ChunkCodes.MESH_MATER: // Name of material used
group.mappings.Add(ParseMeshMaterial(subSegment));
break;
case ChunkCodes.TRI_SMOOTH:
break;
}
subSegment = dataSegment.GetNextSubSegment();
}
return(group);
}
private static ThreeDSObject ParseMeshData(DataReader3DS dataSegment)
{
string name = dataSegment.GetString();
DataReader3DS subSegment = dataSegment.GetNextSubSegment();
ThreeDSObject obj = new ThreeDSObject();
obj.name = name;
while (subSegment != null)
{
switch ((ChunkCodes)subSegment.Tag)
{
case ChunkCodes.OBJ_MESH: // Current subsegment contains the polygonal information
obj.meshes.Add(ParsePolygonalData(subSegment));
break;
default: // Ignore all other subsegment types
break;
}
subSegment = dataSegment.GetNextSubSegment();
}
return(obj);
}
private static ThreeDSMesh.Material ParseMaterialData(DataReader3DS dataSegment)
{
DataReader3DS subSegment = dataSegment.GetNextSubSegment();
ThreeDSMesh.Material mat = new ThreeDSMesh.Material();
while (subSegment != null)
{
switch ((ChunkCodes)subSegment.Tag)
{
case ChunkCodes.MAT_NAME: // Subsegment holds material name
mat.name = subSegment.GetString();
break;
case ChunkCodes.MAT_AMBIENT: // Subsegment holds ambient color
mat.ambient = ParseColorData(subSegment.GetNextSubSegment());
break;
case ChunkCodes.MAT_DIFFUSE: // Subsegment holds diffuse color (this is iffy...)
mat.diffuse = ParseColorData(subSegment.GetNextSubSegment());
break;
case ChunkCodes.MAT_TEXMAP: // Subsegment holds texture map info
/*ParseTextureWeight(*/ subSegment.GetNextSubSegment();
mat.texture = subSegment.GetNextSubSegment().GetString();
break;
default: // Ignore all other subsegment types
break;
}
subSegment = dataSegment.GetNextSubSegment();
}
// Check if this is a duplicate material entry (by name)
// NOTE: Duplicate material name update should be in form materialname_submeshname
/*if (materialDataStore.ContainsKey(currentMaterialData.name))
* {
* // Select an "owning" submesh for the material
* referencingSubmeshes = (ArrayList)(submeshesUsingMaterials[currentMaterialData.name]);
* owningSubmesh = (SubmeshData3DS)(referencingSubmeshes[referencingSubmeshes.Count - 1]);
* // Qualify the material name with the submesh's name as well (see above note)
* currentMaterialData.name = currentMaterialData.name + "_" + owningSubmesh.name;
* owningSubmesh.materialUsed = currentMaterialData.name;
* // Clean up and update submesh reference lists
* referencingSubmeshes.RemoveAt(referencingSubmeshes.Count - 1);
* referencingSubmeshes = new ArrayList();
* referencingSubmeshes.Add(owningSubmesh);
* submeshesUsingMaterials.Add(currentMaterialData.name, referencingSubmeshes);
* }*/
return(mat);
}
private static ThreeDSMesh ParsePolygonalData(DataReader3DS dataSegment)
{
DataReader3DS subSegment = dataSegment.GetNextSubSegment(); // working data subsegment
ThreeDSMesh mesh = new ThreeDSMesh();
while (subSegment != null)
{
switch ((ChunkCodes)subSegment.Tag)
{
case ChunkCodes.MESH_VERTICES: // Subsegment contains vertex information
mesh.verticies = new ThreeDSMesh.Vertex[subSegment.GetUShort()];
for (int vertex = 0; vertex < mesh.verticies.Length; vertex++)
{
mesh.verticies[vertex].x = subSegment.GetFloat();
mesh.verticies[vertex].y = subSegment.GetFloat();
mesh.verticies[vertex].z = subSegment.GetFloat();
}
break;
case ChunkCodes.MESH_XFMATRIX: // Subsegment contains translation matrix info (ignore for now)
break;
case ChunkCodes.MESH_FACES: // Subsegment contains face information
mesh.groups.Add(ParseFaceData(subSegment));
break;
case ChunkCodes.MESH_TEX_VERT: // Subsegment contains texture mapping information
mesh.uvMap = ParseTexVerts(subSegment);
break;
}
subSegment = dataSegment.GetNextSubSegment();
}
// Also use face data to calculate vertex normals
CalculateVertexNormals(mesh);
return(mesh);
}
private static void Parse3DSData(DataReader3DS dataSegment, ThreeDSFileData file)
{
DataReader3DS subSegment = dataSegment.GetNextSubSegment();
while (subSegment != null)
{
switch ((ChunkCodes)subSegment.Tag)
{
case ChunkCodes.MATERIAL:
file.materials.Add(ParseMaterialData(subSegment));
break;
case ChunkCodes.NAMED_OBJECT:
file.objects.Add(ParseMeshData(subSegment));
break;
default:
break;
}
subSegment = dataSegment.GetNextSubSegment();
}
}
static ThreeDSFileData ParseFromData(DataReader3DS data)
{
DataReader3DS dataSubSegment = null;
if ((ChunkCodes)data.Tag == ChunkCodes.PRIMARY)
{
dataSubSegment = data.GetNextSubSegment();
}
else
{
return(null);
}
ThreeDSFileData file = new ThreeDSFileData();
while (dataSubSegment != null)
{
// Check the tag to see what sort of data is in this subsegment (or "chunk")
switch ((ChunkCodes)dataSubSegment.Tag)
{
case ChunkCodes.VERSION:
file.version = dataSubSegment.GetUShort();
break;
case ChunkCodes.EDIT3DS:
Parse3DSData(dataSubSegment, file);
break;
default:
break;
}
dataSubSegment = data.GetNextSubSegment();
}
return(file);
}
static ThreeDSFileData ParseFromData(DataReader3DS data)
{
DataReader3DS dataSubSegment = null;
if ((ChunkCodes)data.Tag == ChunkCodes.PRIMARY)
{
dataSubSegment = data.GetNextSubSegment();
}
else
return null;
ThreeDSFileData file = new ThreeDSFileData();
while (dataSubSegment != null)
{
// Check the tag to see what sort of data is in this subsegment (or "chunk")
switch ((ChunkCodes)dataSubSegment.Tag)
{
case ChunkCodes.VERSION:
file.version = dataSubSegment.GetUShort();
break;
case ChunkCodes.EDIT3DS:
Parse3DSData(dataSubSegment, file);
break;
default:
break;
}
dataSubSegment = data.GetNextSubSegment();
}
return file;
}
private static ThreeDSMesh.Material ParseMaterialData(DataReader3DS dataSegment)
{
DataReader3DS subSegment = dataSegment.GetNextSubSegment();
ThreeDSMesh.Material mat = new ThreeDSMesh.Material();
while (subSegment != null)
{
switch ((ChunkCodes)subSegment.Tag)
{
case ChunkCodes.MAT_NAME: // Subsegment holds material name
mat.name = subSegment.GetString();
break;
case ChunkCodes.MAT_AMBIENT: // Subsegment holds ambient color
mat.ambient = ParseColorData(subSegment.GetNextSubSegment());
break;
case ChunkCodes.MAT_DIFFUSE: // Subsegment holds diffuse color (this is iffy...)
mat.diffuse = ParseColorData(subSegment.GetNextSubSegment());
break;
case ChunkCodes.MAT_TEXMAP: // Subsegment holds texture map info
/*ParseTextureWeight(*/subSegment.GetNextSubSegment();
mat.texture = subSegment.GetNextSubSegment().GetString();
break;
default: // Ignore all other subsegment types
break;
}
subSegment = dataSegment.GetNextSubSegment();
}
// Check if this is a duplicate material entry (by name)
// NOTE: Duplicate material name update should be in form materialname_submeshname
/*if (materialDataStore.ContainsKey(currentMaterialData.name))
{
// Select an "owning" submesh for the material
referencingSubmeshes = (ArrayList)(submeshesUsingMaterials[currentMaterialData.name]);
owningSubmesh = (SubmeshData3DS)(referencingSubmeshes[referencingSubmeshes.Count - 1]);
// Qualify the material name with the submesh's name as well (see above note)
currentMaterialData.name = currentMaterialData.name + "_" + owningSubmesh.name;
owningSubmesh.materialUsed = currentMaterialData.name;
// Clean up and update submesh reference lists
referencingSubmeshes.RemoveAt(referencingSubmeshes.Count - 1);
referencingSubmeshes = new ArrayList();
referencingSubmeshes.Add(owningSubmesh);
submeshesUsingMaterials.Add(currentMaterialData.name, referencingSubmeshes);
}*/
return mat;
}
private static ThreeDSMesh.FaceGroup ParseFaceData(DataReader3DS dataSegment)
{
DataReader3DS subSegment; // will be used to read other subsegments (do not initialize yet)
ThreeDSMesh.FaceGroup group = new ThreeDSMesh.FaceGroup();
group.faces = new ThreeDSMesh.Face[dataSegment.GetUShort()];
// Read face data
for (int face = 0; face < group.faces.Length; face++)
{
group.faces[face].p1 = dataSegment.GetUShort();
group.faces[face].p2 = dataSegment.GetUShort();
group.faces[face].p3 = dataSegment.GetUShort();
// Ignore flag
dataSegment.GetUShort();
}
// Read other subsegments
subSegment = dataSegment.GetNextSubSegment();
while (subSegment != null)
{
switch ((ChunkCodes)subSegment.Tag)
{
case ChunkCodes.MESH_MATER: // Name of material used
group.mappings.Add(ParseMeshMaterial(subSegment));
break;
case ChunkCodes.TRI_SMOOTH:
break;
}
subSegment = dataSegment.GetNextSubSegment();
}
return group;
}
private static ThreeDSMesh ParsePolygonalData(DataReader3DS dataSegment)
{
DataReader3DS subSegment = dataSegment.GetNextSubSegment(); // working data subsegment
ThreeDSMesh mesh = new ThreeDSMesh();
while (subSegment != null)
{
switch ((ChunkCodes)subSegment.Tag)
{
case ChunkCodes.MESH_VERTICES: // Subsegment contains vertex information
mesh.verticies = new ThreeDSMesh.Vertex[subSegment.GetUShort()];
for (int vertex = 0; vertex < mesh.verticies.Length; vertex++)
{
mesh.verticies[vertex].x = subSegment.GetFloat();
mesh.verticies[vertex].y = subSegment.GetFloat();
mesh.verticies[vertex].z = subSegment.GetFloat();
}
break;
case ChunkCodes.MESH_XFMATRIX: // Subsegment contains translation matrix info (ignore for now)
break;
case ChunkCodes.MESH_FACES: // Subsegment contains face information
mesh.groups.Add(ParseFaceData(subSegment));
break;
case ChunkCodes.MESH_TEX_VERT: // Subsegment contains texture mapping information
mesh.uvMap = ParseTexVerts(subSegment);
break;
}
subSegment = dataSegment.GetNextSubSegment();
}
// Also use face data to calculate vertex normals
CalculateVertexNormals(mesh);
return mesh;
}
private static ThreeDSObject ParseMeshData(DataReader3DS dataSegment)
{
string name = dataSegment.GetString();
DataReader3DS subSegment = dataSegment.GetNextSubSegment();
ThreeDSObject obj = new ThreeDSObject();
obj.name = name;
while (subSegment != null)
{
switch ((ChunkCodes)subSegment.Tag)
{
case ChunkCodes.OBJ_MESH: // Current subsegment contains the polygonal information
obj.meshes.Add(ParsePolygonalData(subSegment));
break;
default: // Ignore all other subsegment types
break;
}
subSegment = dataSegment.GetNextSubSegment();
}
return obj;
}
private static void Parse3DSData(DataReader3DS dataSegment, ThreeDSFileData file)
{
DataReader3DS subSegment = dataSegment.GetNextSubSegment();
while (subSegment != null)
{
switch ((ChunkCodes)subSegment.Tag)
{
case ChunkCodes.MATERIAL:
file.materials.Add(ParseMaterialData(subSegment));
break;
case ChunkCodes.NAMED_OBJECT:
file.objects.Add(ParseMeshData(subSegment));
break;
default:
break;
}
subSegment = dataSegment.GetNextSubSegment();
}
}