public Model(string object_name, uint triangleCount, uint vertexCount, PassthroughGP passGP, TopologyIP topoIP, MaterialGroup matg, Object3D parent)
: base(object_name, parent)
{
this.size = 0;
// TODO: Get rid of all referring to things by section ID outside of read/write of model files so we don't have to do this.
SectionId = (uint)object_name.GetHashCode();
this.version = 3;
this.PassthroughGP = passGP;
this.TopologyIP = topoIP;
this.RenderAtoms = new List <RenderAtom>();
RenderAtom nmi = new RenderAtom
{
BaseVertex = 0,
TriangleCount = triangleCount,
BaseIndex = 0,
GeometrySliceLength = vertexCount,
MaterialId = 0
};
this.RenderAtoms.Add(nmi);
//this.unknown9 = 0;
this.MaterialGroup = matg;
this.lightset_ID = 0;
this.properties_bitmap = 0;
this.BoundingRadius = 1;
this.unknown13 = 6;
this.SkinBones = null;
}
public Model(BinaryReader instream, SectionHeader section)
: base(instream)
{
this.RenderAtoms = new List <RenderAtom>();
this.size = section.size;
SectionId = section.id;
this.version = instream.ReadUInt32();
if (this.version == 6)
{
this.BoundsMin = instream.ReadVector3();
this.BoundsMax = instream.ReadVector3();
this.v6_unknown7 = instream.ReadSingle();
this.v6_unknown8 = instream.ReadUInt32();
}
else
{
PostLoadRef <PassthroughGP>(instream.ReadUInt32(), i => PassthroughGP = i);
PostLoadRef <TopologyIP>(instream.ReadUInt32(), i => TopologyIP = i);
var renderAtomCount = instream.ReadUInt32();
for (int x = 0; x < renderAtomCount; x++)
{
RenderAtom item = new RenderAtom();
item.BaseVertex = instream.ReadUInt32();
item.TriangleCount = instream.ReadUInt32();
item.BaseIndex = instream.ReadUInt32();
item.GeometrySliceLength = instream.ReadUInt32();
item.MaterialId = instream.ReadUInt32();
this.RenderAtoms.Add(item);
}
//this.unknown9 = instream.ReadUInt32();
PostLoadRef <MaterialGroup>(instream.ReadUInt32(), i => MaterialGroup = i);
this.lightset_ID = instream.ReadUInt32(); // this is a section id afaik
// Bitmap that stores properties about the model
// Bits:
// 1: cast_shadows
// 3: has_opacity
this.properties_bitmap = instream.ReadUInt32();
this.BoundsMin = instream.ReadVector3();
this.BoundsMax = instream.ReadVector3();
this.BoundingRadius = instream.ReadSingle();
this.unknown13 = instream.ReadUInt32();
PostLoadRef <SkinBones>(instream.ReadUInt32(), i => SkinBones = i);
}
this.remaining_data = null;
if ((section.offset + 12 + section.size) > instream.BaseStream.Position)
{
remaining_data = instream.ReadBytes((int)((section.offset + 12 + section.size) - instream.BaseStream.Position));
}
}
public static MeshData FromGltfMesh(GLTF.Mesh mesh)
{
var vcount = mesh.Primitives.Select(prim => prim.VertexAccessors["POSITION"].Count).Sum();
if (vcount >= ushort.MaxValue)
{
throw new Exception($"Too many vertices ({vcount}) in mesh {mesh.Name}. Limit is 65535");
}
var attribsUsed = mesh.Primitives.First().VertexAccessors.Select(i => i.Key).OrderBy(i => i);
var ok = mesh.Primitives.Select(i => i.VertexAccessors.Keys.OrderBy(j => j)).Aggregate(true, (acc, curr) => acc && curr.SequenceEqual(attribsUsed));
if (!ok)
{
throw new Exception("Vertex attributes not consistent between Primitives. Diesel cannot represent this.");
}
var ms = new MeshData();
ms.materials = mesh.Primitives.Select(i => i.Material?.Name ?? "Material: Default Material").Distinct().ToList();
uint currentBaseVertex = 0;
uint currentBaseIndex = 0;
foreach (var prim in mesh.Primitives)
{
var vertices = GetVerticesFromPrimitive(prim).ToList();
var primFaces = prim.GetTriangleIndices().ToList();
var matname = prim.Material?.Name ?? "Material: Default Material";
var ra = new DM.RenderAtom
{
BaseIndex = currentBaseIndex,
BaseVertex = currentBaseVertex,
MaterialId = (uint)ms.materials.IndexOf(matname),
TriangleCount = (uint)primFaces.Count
};
var vertexIds = new Dictionary <Vertex, int>();
foreach (var(A, B, C) in primFaces)
{
var vtxA = vertices[A];
var vtxB = vertices[B];
var vtxC = vertices[C];
if (!vertexIds.ContainsKey(vtxA))
{
vertexIds[vtxA] = ms.AppendVertex(vtxA);
}
if (!vertexIds.ContainsKey(vtxB))
{
vertexIds[vtxB] = ms.AppendVertex(vtxB);
}
if (!vertexIds.ContainsKey(vtxC))
{
vertexIds[vtxC] = ms.AppendVertex(vtxC);
}
var df = new DM.Face(
(ushort)vertexIds[vtxA],
(ushort)vertexIds[vtxB],
(ushort)vertexIds[vtxC]
);
ms.faces.Add(df);
}
ra.GeometrySliceLength = (uint)vertexIds.Count;
ms.renderAtoms.Add(ra);
currentBaseIndex += ra.TriangleCount * 3;
currentBaseVertex += ra.GeometrySliceLength;
}
return(ms);
}
