public bool CanLoad(Stream S, string FileName)
{
using (BinaryReader Reader = new BinaryReader(S, Encoding.ASCII, true)) {
IQMHeader H = Reader.ReadStruct <IQMHeader>();
if (H.GetMagic() == "INTERQUAKEMODEL" && H.Version == 2)
{
return(true);
}
}
return(false);
}
public FoamModel Load(Stream S, string IQMFile)
{
int NumFrames = 0;
ushort[] FrameData = null;
Vector3[] Position = null;
Vector2[] Texcoord = null;
Vector3[] Normal = null;
Vector4[] Tangent = null;
IQMBlendIndices[] BlendIndexes = null;
IQMBlendWeights[] BlendWeights = null;
FoamColor[] Color = null;
byte[] Text = null;
byte[] Comment = null;
IQMTriangle[] Triangles = null;
IQMMesh[] Meshes = null;
IQMJoint[] Joints = null;
IQMPose[] Poses = null;
IQMAnim[] Anims = null;
FoamVertex3[] FoamVertices = null;
FoamBoneInfo[] FoamBoneInfo = null;
using (BinaryReader Reader = new BinaryReader(S, Encoding.UTF8, true)) {
IQMHeader Header = Reader.ReadStruct <IQMHeader>();
NumFrames = (int)Header.num_frames;
if (Header.GetMagic() != "INTERQUAKEMODEL")
{
throw new Exception("Invalid magic in IQM file");
}
if (Header.Version != 2)
{
throw new Exception("Only IQM version 2 supported");
}
// Text
if (Header.ofs_text != 0)
{
Reader.Seek(Header.ofs_text);
//Text = Encoding.ASCII.GetString(Reader.ReadBytes((int)Header.num_text)).Split(new char[] { (char)0 });
Text = Reader.ReadBytes((int)Header.num_text);
}
// Comments
if (Header.ofs_comment != 0)
{
Reader.Seek(Header.ofs_comment);
Comment = Reader.ReadBytes((int)Header.num_comment);
}
// Vertex arrays
Reader.Seek(Header.ofs_vertexarrays);
IQMVertexArray[] VertArrays = new IQMVertexArray[Header.num_vertexarrays];
for (int i = 0; i < VertArrays.Length; i++)
{
VertArrays[i] = Reader.ReadStruct <IQMVertexArray>();
}
for (int i = 0; i < VertArrays.Length; i++)
{
ref IQMVertexArray VA = ref VertArrays[i];
Reader.Seek(VA.offset);
switch (VA.type)
{
case IQMVertexArrayType.IQM_POSITION:
if (VA.format != IQMVertexArrayFormat.IQM_FLOAT && VA.size != 3)
{
throw new NotImplementedException();
}
Position = Reader.ReadStructArray <Vector3>((uint)(Header.num_vertexes * Marshal.SizeOf <Vector3>()));
break;
case IQMVertexArrayType.IQM_TEXCOORD:
if (VA.format != IQMVertexArrayFormat.IQM_FLOAT && VA.size != 2)
{
throw new NotImplementedException();
}
Texcoord = Reader.ReadStructArray <Vector2>((uint)(Header.num_vertexes * Marshal.SizeOf <Vector2>()));
break;
case IQMVertexArrayType.IQM_NORMAL:
if (VA.format != IQMVertexArrayFormat.IQM_FLOAT && VA.size != 3)
{
throw new NotImplementedException();
}
Normal = Reader.ReadStructArray <Vector3>((uint)(Header.num_vertexes * Marshal.SizeOf <Vector3>()));
break;
case IQMVertexArrayType.IQM_TANGENT:
if (VA.format != IQMVertexArrayFormat.IQM_FLOAT && VA.size != 4)
{
throw new NotImplementedException();
}
Tangent = Reader.ReadStructArray <Vector4>((uint)(Header.num_vertexes * Marshal.SizeOf <Vector4>()));
break;
case IQMVertexArrayType.IQM_BLENDINDEXES:
if (VA.format != IQMVertexArrayFormat.IQM_UBYTE && VA.size != 4)
{
throw new NotImplementedException();
}
BlendIndexes = Reader.ReadStructArray <IQMBlendIndices>((uint)(Header.num_vertexes * Marshal.SizeOf <IQMBlendIndices>()));
break;
case IQMVertexArrayType.IQM_BLENDWEIGHTS:
if (VA.format != IQMVertexArrayFormat.IQM_UBYTE && VA.size != 4)
{
throw new NotImplementedException();
}
BlendWeights = Reader.ReadStructArray <IQMBlendWeights>((uint)(Header.num_vertexes * Marshal.SizeOf <IQMBlendWeights>()));
break;
case IQMVertexArrayType.IQM_COLOR:
if (VA.format != IQMVertexArrayFormat.IQM_UBYTE && VA.size != 4)
{
throw new NotImplementedException();
}
Color = Reader.ReadStructArray <FoamColor>((uint)(Header.num_vertexes * Marshal.SizeOf <FoamColor>()));
break;
case IQMVertexArrayType.IQM_CUSTOM:
default:
throw new NotImplementedException();
}
}
// Triangles
Reader.Seek(Header.ofs_triangles);
Triangles = Reader.ReadStructArray <IQMTriangle>((uint)(Header.num_triangles * sizeof(IQMTriangle)));
// Meshes
Reader.Seek(Header.ofs_meshes);
Meshes = Reader.ReadStructArray <IQMMesh>((uint)(Header.num_meshes * sizeof(IQMMesh)));
// Joints
Reader.Seek(Header.ofs_joints);
Joints = Reader.ReadStructArray <IQMJoint>((uint)(Header.num_joints * sizeof(IQMJoint)));
// Poses
Reader.Seek(Header.ofs_poses);
Poses = Reader.ReadStructArray <IQMPose>((uint)(Header.num_poses * sizeof(IQMPose)));
// Anims
Reader.Seek(Header.ofs_anims);
Anims = Reader.ReadStructArray <IQMAnim>((uint)(Header.num_anims * sizeof(IQMAnim)));
// Frames
Reader.Seek(Header.ofs_frames);
FrameData = Reader.ReadStructArray <ushort>((uint)(CountFrameDataLength(NumFrames, Poses) * sizeof(ushort)));
// Foam vertices
FoamVertices = new FoamVertex3[Header.num_vertexes];
for (int i = 0; i < FoamVertices.Length; i++)
{
FoamVertices[i] = BuildVertex(i, Tangent, Normal, Position, Texcoord, Color);
}
// Foam bone info
FoamBoneInfo = new FoamBoneInfo[FoamVertices.Length];
for (int i = 0; i < FoamBoneInfo.Length; i++)
{
FoamBoneInfo Info = new FoamBoneInfo();
if (BlendIndexes != null && BlendWeights != null)
{
IQMBlendIndices BInd = BlendIndexes[i];
IQMBlendWeights BWgt = BlendWeights[i];
Info.Bone1 = BInd.BlendIndex1;
Info.Bone2 = BInd.BlendIndex2;
Info.Bone3 = BInd.BlendIndex3;
Info.Bone4 = BInd.BlendIndex4;
const float WeightDividend = 255.0f;
Info.Weight1 = BWgt.BlendWeight1 / WeightDividend;
Info.Weight2 = BWgt.BlendWeight2 / WeightDividend;
Info.Weight3 = BWgt.BlendWeight3 / WeightDividend;
Info.Weight4 = BWgt.BlendWeight4 / WeightDividend;
}
FoamBoneInfo[i] = Info;
}
}
