static Mesh MergeBlendShapes(BlendShapeCombiner p)
{
Mesh ret = Object.Instantiate(p.sourceMesh);
ret.name = p.sourceMesh.name;
var src = Object.Instantiate(ret);
foreach (var newKey in p.newKeys)
{
var n = newKey.sourceKeys.Count;
var newFrames = 0;
for (var i = 0; i < n; i++)
{
var key = newKey.sourceKeys[i];
int index = src.GetBlendShapeIndex(key.name);
int numFrames = src.GetBlendShapeFrameCount(index);
if (i == 0 || numFrames < newFrames)
{
newFrames = numFrames;
}
}
var tempVertices = new Vector3[p.sourceMesh.vertexCount];
var tempNormals = new Vector3[p.sourceMesh.vertexCount];
var tempTangents = new Vector3[p.sourceMesh.vertexCount];
for (var frame = 0; frame < newFrames; frame++)
{
float weight = 0.0f;
var vertices = new Vector3[p.sourceMesh.vertexCount];
var normals = new Vector3[p.sourceMesh.vertexCount];
var tangents = new Vector3[p.sourceMesh.vertexCount];
for (var i = 0; i < n; i++)
{
var key = newKey.sourceKeys[i];
int index = src.GetBlendShapeIndex(key.name);
weight += src.GetBlendShapeFrameWeight(index, frame);
p.sourceMesh.GetBlendShapeFrameVertices(index, frame, tempVertices, tempNormals, tempTangents);
vertices = Helper.AddVector3(vertices, tempVertices, key.scale);
normals = Helper.AddVector3(normals, tempNormals, key.scale);
tangents = Helper.AddVector3(tangents, tempTangents, key.scale);
}
ret.AddBlendShapeFrame(newKey.name, weight / n, vertices, normals, tangents);
}
}
return(ret);
}
public static void Process(BlendShapeCombiner p)
{
var resultMesh = MergeBlendShapes(p);
if (resultMesh == null)
{
return;
}
resultMesh.name = p.sourceMesh.name + ".BlendShapeAdded";
// 保存ダイアログを表示
string dir = AssetDatabase.GetAssetPath(p.sourceMesh);
dir = dir == "" ? "Assets" : Path.GetDirectoryName(dir);
string path = EditorUtility.SaveFilePanel("Save the new mesh as", dir, Helper.SanitizeFileName(resultMesh.name), "asset");
if (path.Length == 0)
{
return;
}
// 保存
if (!path.StartsWith(Application.dataPath))
{
Debug.LogError("Invalid path: Path must be under " + Application.dataPath);
return;
}
path = path.Replace(Application.dataPath, "Assets");
AssetDatabase.CreateAsset(resultMesh, path);
Debug.Log("Asset exported: " + path);
// Targetのメッシュを差し替えてシェイプキーのウェイトを設定
Undo.RecordObject(p.targetRenderer, "Process (MeshHoleShrinker)");
p.targetRenderer.sharedMesh = resultMesh;
// Selection.activeGameObject = self.targetRenderer.gameObject;
}
