public static void Process(DietShaper p)
{
var targetScale = p.targetRenderer.transform.localScale;
if (false)
{
p.targetRenderer.transform.localScale = Vector3.one;
}
var resultMesh = DoProcess(p);
if (false)
{
p.targetRenderer.transform.localScale = targetScale;
}
if (resultMesh == null)
{
return;
}
resultMesh.name = p.sourceMesh.name + ".DietShaped";
// 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 (DietShaper)");
p.targetRenderer.sharedMesh = resultMesh;
Selection.activeGameObject = p.targetRenderer.gameObject;
}
static Mesh DoProcess(DietShaper p)
{
var posed = Helper.GetPosedVertices(p.targetRenderer, p.sourceMesh);
var result = Object.Instantiate(p.sourceMesh);
result.name = p.sourceMesh.name;
var debugPoints = new List <Vector3>();
foreach (var key in p.shapeKeys)
{
AddBoneKey(p, key, null, posed, p.sourceMesh.normals, result, debugPoints);
}
// // 結果を点群でデバッグ表示
// Helper.CreateSparseCubes("PosedDebugRoot", debugPoints, 20);
return(result);
}
static void AddBoneKey(DietShaper p, ShapeKey key, ShapeKey exceptKey, Vector3[] posed, Vector3[] normals, Mesh result, List <Vector3> debugPoints)
{
if (!key.enable)
{
return;
}
key.shape.preWrapMode = WrapMode.ClampForever;
key.shape.postWrapMode = WrapMode.ClampForever;
var vertices = new Vector3[p.sourceMesh.vertexCount];
var w2l = p.targetRenderer.worldToLocalMatrix;
var avs = p.avatarRoot.transform.lossyScale;
var l2ws = p.targetRenderer.localToWorldMatrix.lossyScale;
var rescale = new Vector3(l2ws.x / avs.x, l2ws.y / avs.y, l2ws.z / avs.z);
// FIXME: SkinnedMeshRenderer の元々の（FBX内での）Scale を知りたい
var rts = p.targetRenderer.rootBone.lossyScale;
var rtsInv = new Vector3(1f / rts.x, 1f / rts.y, 1f / rts.z);
var resolver = new NearestPointResolver(p.avatarRoot, key, p.isGenericMode);
var rNormal = key.addNormal / avs.magnitude;
var toBeRemoved = new bool[p.sourceMesh.vertexCount];
for (var j = 0; j < p.sourceMesh.vertexCount; j++)
{
var v = posed[j];
var(nearest, time, distance) = resolver.Resolve(v);
var radius = key.radius; // Mathf.Lerp(key.startRadius, key.endRadius, time);
if (radius < distance)
{
continue;
}
debugPoints.Add(nearest);
var w = w2l.MultiplyVector(nearest - v); // 結果の座標差分
if (p.adjustScale)
{
w.Scale(rescale);
}
var r = key.shape.Evaluate(time);
// 法線をミックス
if (0f < rNormal && 0f <= time && time <= 1f)
{
var n = -normals[j].normalized; // 法線の逆方向
var nt = n - Vector3.Project(n, w.normalized); // nのwに対して垂直な成分
w += Vector3.Scale(nt * rNormal * (1f - r), rtsInv);
}
vertices[j] = w;
toBeRemoved[j] = r < key.removeThreshold;
}
if (key.removeThreshold < 1.0f)
{
result.AddBlendShapeFrame(key.name, 100f, vertices, null, null);
}
if (0.0f < key.removeThreshold)
{
// ポリゴン削除
var srcTriangles = result.triangles;
var k = 0;
var n = srcTriangles.Length;
var triangles = new int[n];
for (var i = 0; i < n; i += 3)
{
var v0 = srcTriangles[i];
var v1 = srcTriangles[i + 1];
var v2 = srcTriangles[i + 2];
if (toBeRemoved[v0] && toBeRemoved[v1] && toBeRemoved[v2])
{
continue;
}
triangles[k++] = v0;
triangles[k++] = v1;
triangles[k++] = v2;
}
if (k < n)
{
result.triangles = triangles.Take(k).ToArray();
}
}
}