// init with factory node info & binary reader
internal RwMeshListNode(RwNodeFactory.RwNodeHeader header, BinaryReader reader)
: base(header)
{
mPrimitiveType = (RwPrimitiveType)reader.ReadUInt32();
int numSplits = reader.ReadInt32();
mPrimitiveCount = reader.ReadInt32();
mMeshes = new RwMesh[numSplits];
for (int i = 0; i < numSplits; i++)
{
mMeshes[i] = new RwMesh(reader);
}
}
/// <summary>
/// Initialize a new <see cref="RwMeshListNode"/> using a <see cref="RwGeometryNode"/> and the primitive id for the split data.
/// </summary>
/// <param name="geometryNode"></param>
/// <param name="primitiveType"></param>
public RwMeshListNode(RwGeometryNode geometryNode, RwPrimitiveType primitiveType = RwPrimitiveType.TriangleStrip, RwNode parent = null)
: base(RwNodeId.RwMeshListNode, parent)
{
// set id and prim count
mPrimitiveType = primitiveType;
//mPrimitiveCount = geometryNode.TriangleCount;
// pass 1: order the triangles by ascending material id
var sortedTriangles = geometryNode.Triangles.OrderBy(tri => tri.MatId);
// pass 2: split the indices
List <ushort>[] matSplitsIndices = new List <ushort> [geometryNode.MaterialCount];
List <ushort> curMatSplitIndices = null;
int curMatIdx = -1;
foreach (var tri in sortedTriangles)
{
if (tri.MatId != curMatIdx)
{
if (curMatIdx != -1)
{
matSplitsIndices[curMatIdx] = curMatSplitIndices;
}
curMatIdx = tri.MatId;
curMatSplitIndices = new List <ushort>();
}
curMatSplitIndices.Add(tri.A);
curMatSplitIndices.Add(tri.B);
curMatSplitIndices.Add(tri.C);
}
matSplitsIndices[curMatIdx] = curMatSplitIndices;
// pass 3: create the split data
mMeshes = new RwMesh[geometryNode.MaterialCount];
for (int i = 0; i < mMeshes.Length; i++)
{
ushort[] matSplitIndices = matSplitsIndices[i].ToArray();
int triangleCount;
if (primitiveType == RwPrimitiveType.TriangleStrip)
{
if (NvTriStripUtility.GenerateStrips(matSplitIndices, out PrimitiveGroup[] primitives) && primitives[0].Type == ManagedNvTriStrip.PrimitiveType.TriangleStrip)
/// <summary>
/// Initialize a new <see cref="RwMeshListNode"/> using a <see cref="RwGeometryNode"/> and the primitive id for the split data.
/// </summary>
/// <param name="geometryNode"></param>
/// <param name="primitiveType"></param>
public RwMeshListNode(RwGeometryNode geometryNode, RwPrimitiveType primitiveType = RwPrimitiveType.TriangleStrip, RwNode parent = null)
: base(RwNodeId.RwMeshListNode, parent)
{
// set id and prim count
mPrimitiveType = primitiveType;
//mPrimitiveCount = geometryNode.TriangleCount;
// pass 1: order the triangles by ascending material id
var sortedTriangles = geometryNode.Triangles.OrderBy(tri => tri.MatId);
// pass 2: split the indices
List <ushort>[] matSplitsIndices = new List <ushort> [geometryNode.MaterialCount];
List <ushort> curMatSplitIndices = null;
int curMatIdx = -1;
foreach (var tri in sortedTriangles)
{
if (tri.MatId != curMatIdx)
{
if (curMatIdx != -1)
{
matSplitsIndices[curMatIdx] = curMatSplitIndices;
}
curMatIdx = tri.MatId;
curMatSplitIndices = new List <ushort>();
}
curMatSplitIndices.Add(tri.A);
curMatSplitIndices.Add(tri.B);
curMatSplitIndices.Add(tri.C);
}
matSplitsIndices[curMatIdx] = curMatSplitIndices;
// pass 3: create the split data
mMeshes = new RwMesh[geometryNode.MaterialCount];
for (int i = 0; i < mMeshes.Length; i++)
{
ushort[] matSplitIndices = matSplitsIndices[i].ToArray();
int triangleCount;
if (primitiveType == RwPrimitiveType.TriangleStrip)
{
if (sStripifier.GenerateStrips(matSplitIndices, out var primitives) && primitives[0].Type == NvTriStripDotNet.PrimitiveType.TriangleStrip)
{
matSplitIndices = primitives[0].Indices;
geometryNode.Flags |= RwGeometryFlags.CanTriStrip;
triangleCount = matSplitIndices.Length - 2;
}
else
{
mPrimitiveType = RwPrimitiveType.TriangleList;
triangleCount = matSplitIndices.Length / 3;
//throw new System.Exception("Failed to generate strips.");
}
/*
* NvTriStripDotNet.PrimitiveGroup[] primitives;
* var tristripper = new NvTriStripDotNet.NvTriStrip();
* if (tristripper.GenerateStrips(matSplitIndices, out primitives))
* {
* matSplitIndices = primitives[0].indices.Cast<ushort>().ToArray();
* }
*/
}
else
{
triangleCount = matSplitIndices.Length / 3;
}
mPrimitiveCount += triangleCount;
mMeshes[i] = new RwMesh(i, matSplitIndices);
}
}
