public MqoAttributeRange Start(int len, ushort mtl)
{
ar = new MqoAttributeRange();
ar.mtl = mtl;
ar.AttributeId = at.Count;
ar.FaceStart = len;
at.Add(ar);
return(ar);
}
public AttributeRange[] GenerateAttributeTable(int vertex_start, int vertex_count)
{
AttributeRange[] da = new AttributeRange[at.Count];
for (int i = 0; i < at.Count; i++)
{
MqoAttributeRange ar = at[i];
da[i].AttributeId = ar.AttributeId;
da[i].FaceStart = ar.FaceStart;
da[i].FaceCount = ar.FaceCount;
da[i].VertexStart = vertex_start;
da[i].VertexCount = vertex_count;
}
return(da);
}
public void Finish(int len)
{
ar.FaceCount = len - FaceCount;
FaceCount += ar.FaceCount;
ar = null;
}
/// <summary>
/// 頂点をDirect3Dバッファに書き込みます。
/// </summary>
/// <param name="device">device</param>
public void WriteBuffer(Device device)
{
Vector3[] normals = new Vector3[vertices.Count];
foreach (MqoFace face in faces)
{
Vector3 v1 = vertices[face.a].position - vertices[face.c].position;
Vector3 v2 = vertices[face.b].position - vertices[face.c].position;
Vector3 n = Vector3.Normalize(Vector3.Cross(v2, v1));
normals[face.a] += n;
normals[face.b] += n;
normals[face.c] += n;
}
{
int i = 0;
foreach (UVertex v in vertices)
{
v.normal = Vector3.Normalize(normals[i]);
i++;
}
}
UVertexHeap heap = new UVertexHeap();
List <ushort> indices = new List <ushort>(faces.Count * 3);
{
int face_len = 0;
MqoAttributeRange ar = at.Start(face_len, faces[0].mtl);
foreach (MqoFace face in faces)
{
if (face.mtl != ar.mtl)
{
face_len += indices.Count / 3;
ar = at.Next(face_len, face.mtl);
}
UVertex a = new UVertex(vertices[face.a].position, vertices[face.a].normal, face.ta.X, 1 - face.ta.Y, face.mtl);
UVertex b = new UVertex(vertices[face.b].position, vertices[face.b].normal, face.tb.X, 1 - face.tb.Y, face.mtl);
UVertex c = new UVertex(vertices[face.c].position, vertices[face.c].normal, face.tc.X, 1 - face.tc.Y, face.mtl);
indices.Add(heap.Add(a));
indices.Add(heap.Add(c));
indices.Add(heap.Add(b));
}
{
face_len += indices.Count / 3;
at.Finish(face_len);
ar = null;
}
}
if (dm != null)
{
dm.Dispose();
dm = null;
}
dm = new Mesh(at.FaceCount, heap.Count, MeshFlags.Managed | MeshFlags.WriteOnly, ve, device);
//
// rewrite vertex buffer
//
{
GraphicsStream gs = dm.LockVertexBuffer(LockFlags.None);
{
foreach (UVertex v in heap.ary)
{
gs.Write(v.position);
gs.Write(1.0f);
gs.Write(0.0f);
gs.Write(0.0f);
gs.Write(0.0f);
gs.Write(0);
gs.Write(v.normal);
gs.Write(v.u);
gs.Write(v.v);
}
}
dm.UnlockVertexBuffer();
}
//
// rewrite index buffer
//
{
GraphicsStream gs = dm.LockIndexBuffer(LockFlags.None);
{
foreach (ushort idx in indices)
{
gs.Write(idx);
}
}
dm.UnlockIndexBuffer();
}
//
// rewrite attribute buffer
//
{
int[] attribBuffer = dm.LockAttributeBufferArray(LockFlags.None);
foreach (MqoAttributeRange ar in at.Ranges)
{
for (int i = 0; i < ar.FaceCount; i++)
{
attribBuffer[ar.FaceStart + i] = ar.AttributeId;
}
}
dm.UnlockAttributeBuffer(attribBuffer);
dm.SetAttributeTable(at.GenerateAttributeTable(0, heap.Count));
}
}
