private static VrmLib.Skin CreateSkin(
SkinnedMeshRenderer skinnedMeshRenderer,
Dictionary <GameObject, VrmLib.Node> nodes,
GameObject root)
{
if (skinnedMeshRenderer.bones == null || skinnedMeshRenderer.bones.Length == 0)
{
return(null);
}
var skin = new VrmLib.Skin();
skin.InverseMatrices = ToBufferAccessor(skinnedMeshRenderer.sharedMesh.bindposes);
if (skinnedMeshRenderer.rootBone != null)
{
skin.Root = nodes[skinnedMeshRenderer.rootBone.gameObject];
}
skin.Joints = skinnedMeshRenderer.bones.Select(x => nodes[x.gameObject]).ToList();
return(skin);
}
public static void LoadMesh(this Mesh mesh, VrmLib.Mesh src, VrmLib.Skin skin = null)
{
mesh.vertices = src.VertexBuffer.Positions.GetSpan <Vector3>().ToArray();
mesh.normals = src.VertexBuffer.Normals?.GetSpan <Vector3>().ToArray();
mesh.uv = src.VertexBuffer.TexCoords?.GetSpan <Vector2>().ToArray();
mesh.colors = src.VertexBuffer.Colors?.GetSpan <Color>().ToArray();
if (src.VertexBuffer.Weights != null && src.VertexBuffer.Joints != null)
{
var boneWeights = new BoneWeight[mesh.vertexCount];
if (src.VertexBuffer.Weights.Count != mesh.vertexCount || src.VertexBuffer.Joints.Count != mesh.vertexCount)
{
throw new ArgumentException();
}
var weights = src.VertexBuffer.Weights.GetSpan <Vector4>();
var joints = src.VertexBuffer.Joints.GetSpan <VrmLib.SkinJoints>();
if (skin != null)
{
mesh.bindposes = skin.InverseMatrices.GetSpan <Matrix4x4>().ToArray();
}
for (int i = 0; i < weights.Length; ++i)
{
var w = weights[i];
boneWeights[i].weight0 = w.x;
boneWeights[i].weight1 = w.y;
boneWeights[i].weight2 = w.z;
boneWeights[i].weight3 = w.w;
}
for (int i = 0; i < joints.Length; ++i)
{
var j = joints[i];
boneWeights[i].boneIndex0 = j.Joint0;
boneWeights[i].boneIndex1 = j.Joint1;
boneWeights[i].boneIndex2 = j.Joint2;
boneWeights[i].boneIndex3 = j.Joint3;
}
mesh.boneWeights = boneWeights;
}
mesh.subMeshCount = src.Submeshes.Count;
#if UNITY_2019
var triangles = src.IndexBuffer.GetAsIntArray();
mesh.triangles = triangles;
var flags = MeshUpdateFlags.DontRecalculateBounds | MeshUpdateFlags.DontResetBoneBounds;
for (int i = 0; i < src.Submeshes.Count; ++i)
{
var submesh = src.Submeshes[i];
mesh.SetSubMesh(i, new SubMeshDescriptor
{
indexStart = submesh.Offset,
indexCount = submesh.DrawCount,
},
flags);
}
#else
var triangles = src.IndexBuffer.GetAsIntList();
for (int i = 0; i < src.Submeshes.Count; ++i)
{
var submesh = src.Submeshes[i];
mesh.SetTriangles(triangles.GetRange(submesh.Offset, submesh.DrawCount), i);
}
#endif
foreach (var morphTarget in src.MorphTargets)
{
var positions =
morphTarget.VertexBuffer.Positions != null
? morphTarget.VertexBuffer.Positions.GetSpan <Vector3>().ToArray()
: new Vector3[mesh.vertexCount] // dummy
;
mesh.AddBlendShapeFrame(morphTarget.Name, 100.0f, positions, null, null);
mesh.RecalculateBounds();
mesh.RecalculateTangents();
}
}
/// <summary>
/// VrmLib.Mesh => UnityEngine.Mesh
/// </summary>
/// <param name="mesh"></param>
/// <param name="src"></param>
/// <param name="skin"></param>
public static UnityEngine.Mesh LoadSharedMesh(VrmLib.Mesh src, VrmLib.Skin skin = null)
{
// submesh 方式
var mesh = new UnityEngine.Mesh();
mesh.vertices = src.VertexBuffer.Positions.GetSpan <Vector3>().ToArray();
mesh.normals = src.VertexBuffer.Normals?.GetSpan <Vector3>().ToArray();
mesh.uv = src.VertexBuffer.TexCoords?.GetSpan <Vector2>().ToArray();
mesh.colors = src.VertexBuffer.Colors?.GetSpan <Color>().ToArray();
if (src.VertexBuffer.Weights != null && src.VertexBuffer.Joints != null)
{
var boneWeights = new BoneWeight[mesh.vertexCount];
if (src.VertexBuffer.Weights.Count != mesh.vertexCount || src.VertexBuffer.Joints.Count != mesh.vertexCount)
{
throw new ArgumentException();
}
var weights = src.VertexBuffer.Weights.GetSpan <Vector4>();
var joints = src.VertexBuffer.Joints.GetSpan <VrmLib.SkinJoints>();
if (skin != null)
{
mesh.bindposes = skin.InverseMatrices.GetSpan <Matrix4x4>().ToArray();
}
for (int i = 0; i < weights.Length; ++i)
{
var w = weights[i];
boneWeights[i].weight0 = w.x;
boneWeights[i].weight1 = w.y;
boneWeights[i].weight2 = w.z;
boneWeights[i].weight3 = w.w;
}
for (int i = 0; i < joints.Length; ++i)
{
var j = joints[i];
boneWeights[i].boneIndex0 = j.Joint0;
boneWeights[i].boneIndex1 = j.Joint1;
boneWeights[i].boneIndex2 = j.Joint2;
boneWeights[i].boneIndex3 = j.Joint3;
}
mesh.boneWeights = boneWeights;
}
mesh.subMeshCount = src.Submeshes.Count;
var triangles = src.IndexBuffer.GetAsIntList();
for (int i = 0; i < src.Submeshes.Count; ++i)
{
var submesh = src.Submeshes[i];
mesh.SetTriangles(triangles.GetRange(submesh.Offset, submesh.DrawCount), i);
}
foreach (var morphTarget in src.MorphTargets)
{
var positions =
morphTarget.VertexBuffer.Positions != null
? morphTarget.VertexBuffer.Positions.GetSpan <Vector3>().ToArray()
: new Vector3[mesh.vertexCount] // dummy
;
mesh.AddBlendShapeFrame(morphTarget.Name, 100.0f, positions, null, null);
}
mesh.RecalculateBounds();
mesh.RecalculateTangents();
return(mesh);
}
