public Mesh (string name, Material mat, VertexFormat format, float[] vertices, int[] indices, Bone[] bones) {
_name = name;
_material = mat;
_vbuffer = new VertexBuffer(format, vertices);
_ibuffer = new IndexBuffer(indices, BeginMode.Triangles);
_bones = bones;
if(_bones != null)
_boneTransforms = new Matrix4[_bones.Length];
}
unsafe Mesh[] ReadMeshes (BinaryReader reader, Material[] materials) {
var meshCount = reader.ReadInt32();
var meshes = new Mesh[meshCount];
for (var i = 0; i < meshCount; i++) {
var name = reader.ReadString();
var format = GetVertexFormat((VertexFlags)reader.ReadInt32(), reader.ReadInt32());
var matIdx = reader.ReadInt32();
if (matIdx < 0 || matIdx >= materials.Length)
throw new ContentException("Invalid material index " + matIdx);
var count = reader.ReadInt32();
var vertices = new float[count];
byte[] buf = new byte[count * sizeof(float)];
reader.Read(buf, 0, buf.Length);
fixed(byte *bp = &buf[0]) {
fixed(float *fp = &vertices[0]) {
float* src = (float*)bp;
float* dst = fp;
for (var j = 0; j < count; j++) {
*(dst++) = *(src++);
}
}
}
count = reader.ReadInt32();
var indices = new int[count];
buf = new byte[count * sizeof(int)];
reader.Read(buf, 0, buf.Length);
fixed(byte *bp = &buf[0]) {
fixed(int *ip = &indices[0]) {
int* src = (int*)bp;
int* dst = ip;
for (var j = 0; j < count; j++) {
*(dst++) = *(src++);
}
}
}
count = reader.ReadInt32();
Bone[] bones = null;
if (count > 0) {
bones = new Bone[count];
for (var j = 0; j < count; j++) {
var boneName = reader.ReadString();
Matrix4 offset;
reader.ReadMatrix4(out offset);
var weightCount = reader.ReadInt32();
var weights = new VertexWeight[weightCount];
var sz = weightCount * sizeof(VertexWeight);
if (buf.Length < sz)
buf = new byte[sz];
reader.Read(buf, 0, sz);
fixed(byte *src = &buf[0]) {
var p = (VertexWeight*)src;
fixed(VertexWeight *dst = &weights[0]) {
for (var k = 0; k < weightCount; k++) {
*(dst + k) = *(p + k);
}
}
}
bones[j] = new Bone(j, boneName, ref offset, weights);
}
}
meshes[i] = new Mesh(name, materials[matIdx], format, vertices, indices, bones);
}
return meshes;
}