// -----------------------------------------
// DumpBufferInfoFromMesh
// -----------------------------------------
void DumpBufferInfoFromMesh(Mesh _mesh, BufferInfo _bufInfo)
{
int vertexBytes = 0;
byte[] vertexData;
List <byte[]> indexDataList = new List <byte[]>();
byte[] bindposesData;
Vector3[] vertices = _mesh.vertices;
Vector3[] normals = _mesh.normals;
Vector4[] tangents = _mesh.tangents;
Color[] colors = _mesh.colors;
Vector2[] uv = _mesh.uv;
Vector2[] uv2 = _mesh.uv2;
Vector2[] uv3 = _mesh.uv3;
Vector2[] uv4 = _mesh.uv4;
BoneWeight[] boneWeights = _mesh.boneWeights;
int offsetNormal = 0;
int offsetTangent = 0;
int offsetColor = 0;
int offsetUV = 0;
int offsetUV2 = 0;
int offsetUV3 = 0;
int offsetUV4 = 0;
int offsetJoint = 0;
int offsetWeight = 0;
int offsetBuffer = _bufInfo.data.Length;
Vector3 minPos = Vector3.zero;
Vector3 maxPos = Vector3.zero;
Vector3 minNormal = Vector3.zero;
Vector3 maxNormal = Vector3.zero;
Vector4 minTangent = Vector4.zero;
Vector4 maxTangent = Vector4.zero;
if (vertices.Length > 0)
{
minPos = maxPos = vertices[0];
vertexBytes += 12; // float32 * 3
}
if (normals.Length > 0)
{
offsetNormal = vertexBytes;
vertexBytes += 12; // float32 * 3
}
if (tangents.Length > 0)
{
offsetTangent = vertexBytes;
vertexBytes += 16; // float32 * 4
}
if (colors.Length > 0)
{
offsetColor = vertexBytes;
vertexBytes += 16; // float32 * 4
}
if (uv.Length > 0)
{
offsetUV = vertexBytes;
vertexBytes += 8; // float32 * 2
}
if (uv2.Length > 0)
{
offsetUV2 = vertexBytes;
vertexBytes += 8; // float32 * 2
}
if (uv3.Length > 0)
{
offsetUV3 = vertexBytes;
vertexBytes += 8; // float32 * 2
}
if (uv4.Length > 0)
{
offsetUV4 = vertexBytes;
vertexBytes += 8; // float32 * 2
}
if (boneWeights.Length > 0)
{
offsetJoint = vertexBytes;
vertexBytes += 8; // uint16 * 4
offsetWeight = vertexBytes;
vertexBytes += 16; // float32 * 4
}
// vertexData
using (MemoryStream stream = new MemoryStream(vertexBytes * _mesh.vertexCount)) {
using (BinaryWriter writer = new BinaryWriter(stream)) {
for (int i = 0; i < _mesh.vertexCount; ++i)
{
if (vertices.Length > 0)
{
Vector3 vert = vertices[i];
// NOTE: convert LH to RH
vert.z = -vert.z;
writer.Write(vert.x);
writer.Write(vert.y);
writer.Write(vert.z);
if (vert.x < minPos.x)
{
minPos.x = vert.x;
}
if (vert.y < minPos.y)
{
minPos.y = vert.y;
}
if (vert.z < minPos.z)
{
minPos.z = vert.z;
}
if (vert.x > maxPos.x)
{
maxPos.x = vert.x;
}
if (vert.y > maxPos.y)
{
maxPos.y = vert.y;
}
if (vert.z > maxPos.z)
{
maxPos.z = vert.z;
}
}
if (normals.Length > 0)
{
Vector3 normal = normals[i];
// NOTE: convert LH to RH
normal.z = -normal.z;
writer.Write(normal.x);
writer.Write(normal.y);
writer.Write(normal.z);
if (normal.x < minNormal.x)
{
minNormal.x = normal.x;
}
if (normal.y < minNormal.y)
{
minNormal.y = normal.y;
}
if (normal.z < minNormal.z)
{
minNormal.z = normal.z;
}
if (normal.x > maxNormal.x)
{
maxNormal.x = normal.x;
}
if (normal.y > maxNormal.y)
{
maxNormal.y = normal.y;
}
if (normal.z > maxNormal.z)
{
maxNormal.z = normal.z;
}
}
if (tangents.Length > 0)
{
Vector4 tangent = tangents[i];
// NOTE: convert LH to RH
tangent.z = -tangent.z;
writer.Write(tangent.x);
writer.Write(tangent.y);
writer.Write(tangent.z);
writer.Write(tangent.w);
if (tangent.x < minTangent.x)
{
minTangent.x = tangent.x;
}
if (tangent.y < minTangent.y)
{
minTangent.y = tangent.y;
}
if (tangent.z < minTangent.z)
{
minTangent.z = tangent.z;
}
if (tangent.w < minTangent.w)
{
minTangent.w = tangent.w;
}
if (tangent.x > maxTangent.x)
{
maxTangent.x = tangent.x;
}
if (tangent.y > maxTangent.y)
{
maxTangent.y = tangent.y;
}
if (tangent.z > maxTangent.z)
{
maxTangent.z = tangent.z;
}
if (tangent.w > maxTangent.w)
{
maxTangent.w = tangent.w;
}
}
if (colors.Length > 0)
{
writer.Write(colors[i].r);
writer.Write(colors[i].g);
writer.Write(colors[i].b);
writer.Write(colors[i].a);
}
if (uv.Length > 0)
{
writer.Write(uv[i].x);
writer.Write(uv[i].y);
}
if (uv2.Length > 0)
{
writer.Write(uv2[i].x);
writer.Write(uv2[i].y);
}
if (uv3.Length > 0)
{
writer.Write(uv3[i].x);
writer.Write(uv3[i].y);
}
if (uv4.Length > 0)
{
writer.Write(uv4[i].x);
writer.Write(uv4[i].y);
}
if (boneWeights.Length > 0)
{
writer.Write((ushort)boneWeights[i].boneIndex0);
writer.Write((ushort)boneWeights[i].boneIndex1);
writer.Write((ushort)boneWeights[i].boneIndex2);
writer.Write((ushort)boneWeights[i].boneIndex3);
writer.Write(boneWeights[i].weight0);
writer.Write(boneWeights[i].weight1);
writer.Write(boneWeights[i].weight2);
writer.Write(boneWeights[i].weight3);
}
}
}
vertexData = stream.ToArray();
}
// indexDataList
for (int i = 0; i < _mesh.subMeshCount; ++i)
{
int[] subTriangles = _mesh.GetTriangles(i);
if (subTriangles.Length > 0)
{
using (MemoryStream stream = new MemoryStream(2 * subTriangles.Length)) {
using (BinaryWriter writer = new BinaryWriter(stream)) {
// DISABLE
// for ( int ii = 0; ii < subTriangles.Length; ++ii ) {
// writer.Write((ushort)subTriangles[ii]);
// }
// NOTE: convert mesh winding order from CW (Unity3D's) to CCW (most webgl programs)
for (int ii = 0; ii < subTriangles.Length / 3; ++ii)
{
writer.Write((ushort)subTriangles[3 * ii]);
writer.Write((ushort)subTriangles[3 * ii + 2]);
writer.Write((ushort)subTriangles[3 * ii + 1]);
}
}
indexDataList.Add(stream.ToArray());
}
}
}
// bindposesData
using (MemoryStream stream = new MemoryStream(4 * 16 * _mesh.bindposes.Length)) {
using (BinaryWriter writer = new BinaryWriter(stream)) {
for (int i = 0; i < _mesh.bindposes.Length; ++i)
{
Matrix4x4 bindpose = _mesh.bindposes[i];
// NOTE: convert LH to RH
writer.Write(bindpose[0]);
writer.Write(bindpose[1]);
writer.Write(-bindpose[2]); // a02
writer.Write(bindpose[3]);
writer.Write(bindpose[4]);
writer.Write(bindpose[5]);
writer.Write(-bindpose[6]); // a12
writer.Write(bindpose[7]);
writer.Write(-bindpose[8]); // a20
writer.Write(-bindpose[9]); // a21
writer.Write(bindpose[10]);
writer.Write(bindpose[11]);
writer.Write(bindpose[12]);
writer.Write(bindpose[13]);
writer.Write(-bindpose[14]); // b2
writer.Write(bindpose[15]);
}
}
bindposesData = stream.ToArray();
}
// bufferViews
List <BufferViewInfo> bufferViews = new List <BufferViewInfo>();
// vbView
BufferViewInfo vbView = new BufferViewInfo
{
name = "vb@" + _mesh.name,
offset = offsetBuffer,
length = vertexData.Length,
stride = vertexBytes,
type = BufferType.VERTEX,
accessors = new List <AccessorInfo>(),
};
if (vertices.Length > 0)
{
AccessorInfo acc = new AccessorInfo
{
name = "position@" + _mesh.name,
offset = 0,
count = _mesh.vertexCount,
compType = ComponentType.FLOAT32,
attrType = AttrType.VEC3,
min = new object[3] {
minPos.x, minPos.y, minPos.z
},
max = new object[3] {
maxPos.x, maxPos.y, maxPos.z
},
};
vbView.accessors.Add(acc);
}
if (normals.Length > 0)
{
AccessorInfo acc = new AccessorInfo
{
name = "normal@" + _mesh.name,
offset = offsetNormal,
count = _mesh.vertexCount,
compType = ComponentType.FLOAT32,
attrType = AttrType.VEC3,
min = new object[3] {
minNormal.x, minNormal.y, minNormal.z
},
max = new object[3] {
maxNormal.x, maxNormal.y, maxNormal.z
},
};
vbView.accessors.Add(acc);
}
if (tangents.Length > 0)
{
AccessorInfo acc = new AccessorInfo
{
name = "tangent@" + _mesh.name,
offset = offsetTangent,
count = _mesh.vertexCount,
compType = ComponentType.FLOAT32,
attrType = AttrType.VEC4,
min = new object[4] {
minTangent.x, minTangent.y, minTangent.z, minTangent.w
},
max = new object[4] {
maxTangent.x, maxTangent.y, maxTangent.z, maxTangent.w
},
};
vbView.accessors.Add(acc);
}
if (colors.Length > 0)
{
AccessorInfo acc = new AccessorInfo
{
name = "color@" + _mesh.name,
offset = offsetColor,
count = _mesh.vertexCount,
compType = ComponentType.FLOAT32,
attrType = AttrType.VEC4,
// TODO: min, max
};
vbView.accessors.Add(acc);
}
if (uv.Length > 0)
{
AccessorInfo acc = new AccessorInfo
{
name = "uv0@" + _mesh.name,
offset = offsetUV,
count = _mesh.vertexCount,
compType = ComponentType.FLOAT32,
attrType = AttrType.VEC2,
// TODO: min, max
};
vbView.accessors.Add(acc);
}
if (uv2.Length > 0)
{
AccessorInfo acc = new AccessorInfo
{
name = "uv1@" + _mesh.name,
offset = offsetUV2,
count = _mesh.vertexCount,
compType = ComponentType.FLOAT32,
attrType = AttrType.VEC2,
// TODO: min, max
};
vbView.accessors.Add(acc);
}
if (uv3.Length > 0)
{
AccessorInfo acc = new AccessorInfo
{
name = "uv2@" + _mesh.name,
offset = offsetUV3,
count = _mesh.vertexCount,
compType = ComponentType.FLOAT32,
attrType = AttrType.VEC2,
// TODO: min, max
};
vbView.accessors.Add(acc);
}
if (uv4.Length > 0)
{
AccessorInfo acc = new AccessorInfo
{
name = "uv3@" + _mesh.name,
offset = offsetUV4,
count = _mesh.vertexCount,
compType = ComponentType.FLOAT32,
attrType = AttrType.VEC2,
// TODO: min, max
};
vbView.accessors.Add(acc);
}
if (boneWeights.Length > 0)
{
AccessorInfo acc = new AccessorInfo
{
name = "joints@" + _mesh.name,
offset = offsetJoint,
count = _mesh.vertexCount,
compType = ComponentType.UINT16,
attrType = AttrType.VEC4,
// TODO: min, max
};
vbView.accessors.Add(acc);
acc = new AccessorInfo
{
name = "weights@" + _mesh.name,
offset = offsetWeight,
count = _mesh.vertexCount,
compType = ComponentType.FLOAT32,
attrType = AttrType.VEC4,
// TODO: min, max
};
vbView.accessors.Add(acc);
}
//
bufferViews.Add(vbView);
offsetBuffer += Utils.Align(vbView.length, 4);
// ibView
for (int i = 0; i < indexDataList.Count; ++i)
{
byte[] indexData = indexDataList[i];
BufferViewInfo ibView = new BufferViewInfo
{
name = "ib" + i + "@" + _mesh.name,
offset = offsetBuffer,
length = indexData.Length,
type = BufferType.INDEX,
accessors = new List <AccessorInfo>(),
};
AccessorInfo acc = new AccessorInfo
{
name = "indices" + i + "@" + _mesh.name,
offset = 0,
count = indexData.Length / 2,
compType = ComponentType.UINT16,
attrType = AttrType.SCALAR,
};
ibView.accessors.Add(acc);
bufferViews.Add(ibView);
offsetBuffer += Utils.Align(ibView.length, 4);
}
// bpView
if (bindposesData.Length > 0)
{
BufferViewInfo bpView = new BufferViewInfo
{
name = "bp@" + _mesh.name,
offset = offsetBuffer,
length = bindposesData.Length,
type = BufferType.NONE,
accessors = new List <AccessorInfo>(),
};
AccessorInfo acc = new AccessorInfo
{
name = "bindposes@" + _mesh.name,
offset = 0,
count = bindposesData.Length / (4 * 16),
compType = ComponentType.FLOAT32,
attrType = AttrType.MAT4,
};
bpView.accessors.Add(acc);
bufferViews.Add(bpView);
offsetBuffer += Utils.Align(bpView.length, 4);
}
// data
byte[] data = new byte[offsetBuffer];
int offset = 0;
System.Buffer.BlockCopy(_bufInfo.data, 0, data, offset, _bufInfo.data.Length);
offset += _bufInfo.data.Length;
System.Buffer.BlockCopy(vertexData, 0, data, offset, vertexData.Length);
offset += Utils.Align(vertexData.Length, 4);
for (int i = 0; i < indexDataList.Count; ++i)
{
System.Buffer.BlockCopy(indexDataList[i], 0, data, offset, indexDataList[i].Length);
offset += Utils.Align(indexDataList[i].Length, 4);
}
System.Buffer.BlockCopy(bindposesData, 0, data, offset, bindposesData.Length);
offset += Utils.Align(bindposesData.Length, 4);
//
_bufInfo.data = data;
_bufInfo.bufferViews.AddRange(bufferViews);
}
// -----------------------------------------
// DumpBufferInfoFromAnimData
// -----------------------------------------
void DumpBufferInfoFromAnimData(AnimData _animData, BufferInfo _bufInfo)
{
List <AccessorInfo> accessors = new List <AccessorInfo>();
// calculate total length of animation-data
int length = 0;
AccessorInfo acc;
// time0
acc = new AccessorInfo
{
name = "time0@" + _animData.name,
offset = length,
count = 1,
compType = ComponentType.FLOAT32,
attrType = AttrType.SCALAR
};
accessors.Add(acc);
length += 4;
// times
acc = new AccessorInfo
{
name = "times@" + _animData.name,
offset = length,
count = _animData.times.Count,
compType = ComponentType.FLOAT32,
attrType = AttrType.SCALAR
};
accessors.Add(acc);
length += _animData.times.Count * 4;
// frames
foreach (var entry in _animData.nameToFrames)
{
NodeFrames frames = entry.Value;
if (frames.tlist.Count > 0)
{
acc = new AccessorInfo
{
name = frames.node.name + "_T@" + _animData.name,
offset = length,
count = frames.tlist.Count,
compType = ComponentType.FLOAT32,
attrType = AttrType.VEC3
};
accessors.Add(acc);
length += frames.tlist.Count * 12;
}
if (frames.slist.Count > 0)
{
acc = new AccessorInfo
{
name = frames.node.name + "_S@" + _animData.name,
offset = length,
count = frames.slist.Count,
compType = ComponentType.FLOAT32,
attrType = AttrType.VEC3
};
accessors.Add(acc);
length += frames.slist.Count * 12;
}
if (frames.rlist.Count > 0)
{
acc = new AccessorInfo
{
name = frames.node.name + "_R@" + _animData.name,
offset = length,
count = frames.rlist.Count,
compType = ComponentType.FLOAT32,
attrType = AttrType.VEC4
};
accessors.Add(acc);
length += frames.rlist.Count * 16;
}
}
// write data
byte[] clipData;
using (MemoryStream stream = new MemoryStream(length)) {
using (BinaryWriter writer = new BinaryWriter(stream)) {
// time0
writer.Write(0.0f);
// times
for (int i = 0; i < _animData.times.Count; ++i)
{
writer.Write(_animData.times[i]);
}
foreach (var entry in _animData.nameToFrames)
{
NodeFrames frames = entry.Value;
if (frames.tlist.Count > 0)
{
for (int i = 0; i < frames.tlist.Count; ++i)
{
// NOTE: convert LH to RH
writer.Write(frames.tlist[i].x);
writer.Write(frames.tlist[i].y);
writer.Write(-frames.tlist[i].z);
}
}
if (frames.slist.Count > 0)
{
for (int i = 0; i < frames.slist.Count; ++i)
{
writer.Write(frames.slist[i].x);
writer.Write(frames.slist[i].y);
writer.Write(frames.slist[i].z);
}
}
if (frames.rlist.Count > 0)
{
for (int i = 0; i < frames.rlist.Count; ++i)
{
// NOTE: convert LH to RH
writer.Write(-frames.rlist[i].x);
writer.Write(-frames.rlist[i].y);
writer.Write(frames.rlist[i].z);
writer.Write(frames.rlist[i].w);
}
}
}
}
clipData = stream.ToArray();
}
// buffer view
BufferViewInfo bufView = new BufferViewInfo
{
name = _animData.name,
offset = _bufInfo.data.Length,
length = clipData.Length,
type = BufferType.NONE,
accessors = accessors
};
//
byte[] data = new byte[_bufInfo.data.Length + clipData.Length];
int offset = 0;
System.Buffer.BlockCopy(_bufInfo.data, 0, data, offset, _bufInfo.data.Length);
offset += _bufInfo.data.Length;
System.Buffer.BlockCopy(clipData, 0, data, offset, clipData.Length);
offset += clipData.Length;
//
_bufInfo.data = data;
_bufInfo.bufferViews.Add(bufView);
}