private static void ReadVerticesSource(BinaryReader br, string groupName, int bodyPartIndex, int modelIndex, ModelData modelData, DataStructures.Models.Model model, int numMesh, long meshIndex)
{
br.BaseStream.Position = meshIndex;
for (var i = 0; i < numMesh; i++)
{
var material = br.ReadInt32();
var modelOffset = br.ReadInt32();
var numVerts = br.ReadInt32();
var vertexOffset = br.ReadInt32();
var numFlexes = br.ReadInt32();
var flexIndex = br.ReadInt32();
var materialType = br.ReadInt32();
var materialParam = br.ReadInt32();
var meshId = br.ReadInt32();
var center = br.ReadCoordinateF();
var modelVertexDataPointer = br.ReadInt32();
var numLODVertices = br.ReadIntArray(8);
br.ReadIntArray(8); // Unused
foreach (var mm in modelData.Meshes.Where(mm => mm.BodyPart == bodyPartIndex
&& mm.Model == modelIndex
&& mm.LOD == 0
&& mm.MeshIndex == meshId))
{
var mesh = new Mesh(mm.LOD);
foreach (var point in mm.Mesh.Points)
{
var vert = modelData.Vertices[point.VertexIndex + vertexOffset];
var boneWeights = new List<BoneWeighting>();
for (var j = 0; j < vert.NumBones; j++)
{
boneWeights.Add(new BoneWeighting(model.Bones[vert.Bones[j]], vert.BoneWeights[j]));
}
var mv = new MeshVertex(vert.Position, vert.Normal, boneWeights, vert.TextureS, vert.TextureT);
mesh.Vertices.Add(mv);
}
model.AddMesh(groupName, modelIndex, mesh);
}
}
}
private static void ReadVerticesGoldSource(BinaryReader br, string bodyPartName, int modelIndex, DataStructures.Models.Model model, int numVerts, int vertInfoIndex, int vertIndex, int numMesh, int meshIndex, int numNorms, int normInfoIndex, int normIndex)
{
br.BaseStream.Position = vertInfoIndex;
var vertInfoData = br.ReadByteArray(numVerts);
br.BaseStream.Position = normInfoIndex;
var normInfoData = br.ReadByteArray(numNorms);
br.BaseStream.Position = vertIndex;
var vertices = br.ReadCoordinateFArray(numVerts);
br.BaseStream.Position = normIndex;
var normals = br.ReadCoordinateFArray(numNorms);
br.BaseStream.Position = meshIndex;
for (var i = 0; i < numMesh; i++)
{
var mesh = new Mesh(0); // GoldSource meshes don't have LODs
var meshNumTris = br.ReadInt32();
var meshTriIndex = br.ReadInt32();
var meshSkinRef = br.ReadInt32();
var meshNumNorms = br.ReadInt32();
var meshNormIndex = br.ReadInt32();
mesh.SkinRef = meshSkinRef;
var pos = br.BaseStream.Position;
br.BaseStream.Position = meshTriIndex;
int sh;
// Read all the triangle strips and fans from the mesh and convert into easy-to-render 3-point triangles
while ((sh = br.ReadInt16()) != 0)
{
var list = new List<MdlProviderSequenceDataPoint>();
var fan = sh < 0;
if (fan) sh = -sh; // Negative value flags a fan, otherwise it is a strip
for (var j = 0; j < sh; j++) // Read the points in the sequence
{
list.Add(new MdlProviderSequenceDataPoint
{
Vertex = br.ReadInt16(), // Vertex index in the vertices array
Normal = br.ReadInt16(), // Normal index in the normals array
TextureS = br.ReadInt16(),
TextureT = br.ReadInt16()
});
}
for (var j = 0; j < list.Count - 2; j++)
{
// Get the vert indices to use for the various types of strip/fan
// |TRIANGLE FAN | |TRIANGLE STRIP (ODD)| |TRIANGLE STRIP (EVEN)|
var add = fan ? new[] {0, j + 1, j + 2} : (j % 2 == 1 ? new[] {j + 1, j, j + 2 } : new[] {j, j + 1, j + 2 });
foreach (var idx in add)
{
var vi = list[idx];
var boneIndex = vertInfoData[vi.Vertex]; // Vertinfo tells what bone the vert belongs to
mesh.Vertices.Add(new MeshVertex(
vertices[vi.Vertex],
normals[vi.Normal],
model.Bones[boneIndex],
vi.TextureS,
vi.TextureT));
}
}
}
model.AddMesh(bodyPartName, modelIndex, mesh);
br.BaseStream.Position = pos;
}
}