/// <summary>
/// Parses the face-specific polygonal data from the current data segment.
/// </summary>
/// <param name="dataSegment">
/// Contains the data to be parsed.
/// </param>
protected void ParseFaceData(DataReader3DS dataSegment)
{
int i; // counter
DataReader3DS subSegment; // will be used to read other subsegments (do not initialize yet)
this.currentMeshData.Faces = new MeshData3DS.FaceData3DS[dataSegment.GetUShort()];
// Read face data
for (i = 0; i < this.currentMeshData.Faces.Length; i++)
{
this.currentMeshData.Faces[i].Vertex1 = dataSegment.GetUShort();
this.currentMeshData.Faces[i].Vertex2 = dataSegment.GetUShort();
this.currentMeshData.Faces[i].Vertex3 = dataSegment.GetUShort();
this.currentMeshData.Faces[i].Flags = dataSegment.GetUShort();
}
// Read other subsegments
subSegment = dataSegment.GetNextSubSegment();
while (subSegment != null)
{
switch (subSegment.Tag)
{
case 0x4130: // Name of material used
this.currentMeshData.MaterialUsed = subSegment.GetString();
break;
}
subSegment = dataSegment.GetNextSubSegment();
}
}
/// <summary>
/// Parses the polygonal data from the current data segment.
/// </summary>
/// <param name="dataSegment">
/// Contains the data to be parsed.
/// </param>
protected void ParsePolygonalData(DataReader3DS dataSegment)
{
int i; // counter
DataReader3DS subSegment = dataSegment.GetNextSubSegment(); // working data subsegment
while (subSegment != null)
{
switch (subSegment.Tag)
{
case 0x4110: // Subsegment contains vertex information
this.currentMeshData.Vertices = new Point3D[subSegment.GetUShort()];
for (i = 0; i < this.currentMeshData.Vertices.Length; i++)
{
this.currentMeshData.Vertices[i].X = subSegment.GetFloat();
this.currentMeshData.Vertices[i].Y = subSegment.GetFloat();
this.currentMeshData.Vertices[i].Z = subSegment.GetFloat();
}
break;
case 0x4160: // Subsegment contains translation matrix info (ignore for now)
break;
case 0x4120: // Subsegment contains face information
this.ParseFaceData(subSegment);
break;
case 0x4140: // Subsegment contains texture mapping information
this.currentMeshData.TextureCoordinates = new Point2D[subSegment.GetUShort()];
//HACK: This is because the above array allocation doesn't automatically
//HACK: create each element.
for (i = 0; i < this.currentMeshData.TextureCoordinates.Length; i++)
{
this.currentMeshData.TextureCoordinates[i] = new Point2D();
}
//HACK: End hack.
if (this.currentMeshData.TextureCoordinates.Length != this.currentMeshData.Vertices.Length)
{
Console.WriteLine("WARNING: Possible errors in texture coordinate mapping!");
}
for (i = 0; i < this.currentMeshData.TextureCoordinates.Length; i++)
{
this.currentMeshData.TextureCoordinates[i].X = subSegment.GetFloat();
this.currentMeshData.TextureCoordinates[i].Y = subSegment.GetFloat();
}
break;
}
subSegment = dataSegment.GetNextSubSegment();
}
// Also use face data to calculate vertex normals
this.CalculateVertexNormals();
}
public void Load()
{
DataReader3DS dataSubSegment = null;
//Validate that the 3DS file is good
if ((this.dataReader != null) && (this.dataReader.Tag == 0x4D4D))
{
dataSubSegment = this.dataReader.GetNextSubSegment();
}
else
{
throw new FileLoadException("3DS file is either corrupted or otherwise not recognizable.");
}
// Check to see what kind of data is contained in the current data subsegment
while (dataSubSegment != null)
{
// Check the tag to see what sort of data is in this subsegment (or "chunk")
switch (dataSubSegment.Tag)
{
case 0x0002: // Subsegment contains 3DS version
ushort version3DS = dataSubSegment.GetUShort(); //This is the 3DS version
this.version = version3DS.ToString();
break;
case 0x3D3D: // Subsegment contains 3DS data
this.ParseData(dataSubSegment);
break;
}
dataSubSegment = this.dataReader.GetNextSubSegment();
}
//// Attempt to write mesh data to the .mesh.xml file
//if (meshDataStore.Count > 0) {
// try {
// WriteMeshFile(meshFileName);
// } catch (Exception anyException) {
// System.Console.WriteLine("Error writing mesh XML file. See below for error...");
// System.Console.WriteLine(anyException.Message);
// }
//}
//// Attempt to write material data to the .material file
//if (materialDataStore.Count > 0) {
// try {
// WriteMaterialFile(materialFileName);
// } catch (Exception anyException) {
// System.Console.WriteLine("Error writing material file. See below for error...");
// System.Console.WriteLine(anyException.Message);
// }
//}
}
/// <summary>
/// Parses the texture weight from the current data segment.
/// </summary>
/// <param name="dataSegment">
/// Contains the data to be parsed.
/// </param>
protected void ParseTextureWeight(DataReader3DS dataSegment)
{
switch (dataSegment.Tag)
{
case 0x0030: // Percentage is in short format
this.currentMaterialData.textureWeight = ((float)dataSegment.GetUShort()) / (float)100.0;
break;
case 0x0031: // Percentage is in float format
this.currentMaterialData.textureWeight = dataSegment.GetFloat();
break;
default: // There should be no other formats, but if there are then we ignore
break;
}
}
/// <summary>
/// Parses the texture weight from the current data segment.
/// </summary>
/// <param name="dataSegment">
/// Contains the data to be parsed.
/// </param>
protected void ParseTextureWeight(DataReader3DS dataSegment)
{
switch (dataSegment.Tag) {
case 0x0030: // Percentage is in short format
this.currentMaterialData.textureWeight = ((float) dataSegment.GetUShort()) / (float) 100.0;
break;
case 0x0031: // Percentage is in float format
this.currentMaterialData.textureWeight = dataSegment.GetFloat();
break;
default: // There should be no other formats, but if there are then we ignore
break;
}
}
/// <summary>
/// Parses the face-specific polygonal data from the current data segment.
/// </summary>
/// <param name="dataSegment">
/// Contains the data to be parsed.
/// </param>
protected void ParseFaceData(DataReader3DS dataSegment)
{
int i; // counter
DataReader3DS subSegment; // will be used to read other subsegments (do not initialize yet)
this.currentMeshData.Faces = new MeshData3DS.FaceData3DS[dataSegment.GetUShort()];
// Read face data
for (i = 0; i < this.currentMeshData.Faces.Length; i++) {
this.currentMeshData.Faces[i].Vertex1 = dataSegment.GetUShort();
this.currentMeshData.Faces[i].Vertex2 = dataSegment.GetUShort();
this.currentMeshData.Faces[i].Vertex3 = dataSegment.GetUShort();
this.currentMeshData.Faces[i].Flags = dataSegment.GetUShort();
}
// Read other subsegments
subSegment = dataSegment.GetNextSubSegment();
while (subSegment != null) {
switch (subSegment.Tag) {
case 0x4130: // Name of material used
this.currentMeshData.MaterialUsed = subSegment.GetString();
break;
}
subSegment = dataSegment.GetNextSubSegment();
}
}