bool TryGetMeshInfo(GameObject root, Renderer renderer, IReadOnlyList <BlendShapeClip> clips, VRMExportSettings settings, out MeshExportInfo info)
{
info = default;
if (root == null)
{
info.Summary = "";
return(false);
}
if (renderer == null)
{
info.Summary = "no Renderer";
return(false);
}
info.Renderer = renderer;
if (renderer is SkinnedMeshRenderer smr)
{
info.Skinned = true;
info.Mesh = smr.sharedMesh;
info.IsRendererActive = smr.EnableForExport();
}
else if (renderer is MeshRenderer mr)
{
var filter = mr.GetComponent <MeshFilter>();
if (filter != null)
{
info.Mesh = filter.sharedMesh;
}
info.IsRendererActive = mr.EnableForExport();
}
else
{
info.Summary = "no Mesh";
return(false);
}
info.VertexColor = MeshExportInfo.DetectVertexColor(info.Mesh, info.Renderer.sharedMaterials);
var relativePath = UniGLTF.UnityExtensions.RelativePathFrom(renderer.transform, root.transform);
CalcMeshSize(ref info, relativePath, settings, clips);
return(true);
}
public static void CalcMeshSize(ref MeshExportInfo info,
string relativePath, VRMExportSettings settings, IReadOnlyList <BlendShapeClip> clips)
{
var sb = new StringBuilder();
if (!info.IsRendererActive)
{
sb.Append("[NotActive]");
}
info.VertexCount = info.Mesh.vertexCount;
info.ExportVertexSize = 0;
info.TotalBlendShapeCount = 0;
info.ExportBlendShapeCount = 0;
// float4 x 3
// vertices
sb.Append($"(Pos");
if (info.HasNormal)
{
sb.Append("+Nom");
info.ExportVertexSize += 4 * 3;
}
if (info.HasUV)
{
sb.Append("+UV");
info.ExportVertexSize += 4 * 2;
}
if (info.HasVertexColor)
{
sb.Append("+Col");
info.ExportVertexSize += 4 * 4;
}
if (info.HasSkinning)
{
// short, float x 4 weights
sb.Append("+Skin");
info.ExportVertexSize += (2 + 4) * 4;
}
// indices
info.IndexCount = info.Mesh.triangles.Length;
// postion + normal ?. always tangent is ignored
info.TotalBlendShapeCount = info.Mesh.blendShapeCount;
info.ExportBlendShapeVertexSize = settings.OnlyBlendshapePosition ? 4 * 3 : 4 * (3 + 3);
for (var i = 0; i < info.Mesh.blendShapeCount; ++i)
{
// var name = Mesh.GetBlendShapeName(i);
if (settings.ReduceBlendshape)
{
if (!ClipsContainsName(clips, settings.ReduceBlendshapeClip, new BlendShapeBinding
{
Index = i,
RelativePath = relativePath,
}))
{
// skip
continue;
}
}
++info.ExportBlendShapeCount;
}
if (info.ExportBlendShapeCount > 0)
{
sb.Append($"+Morph x {info.ExportBlendShapeCount}");
}
sb.Append($") x {info.Mesh.vertexCount}");
switch (info.VertexColor)
{
case MeshExportInfo.VertexColorState.ExistsAndIsUsed:
case MeshExportInfo.VertexColorState.ExistsAndMixed: // エクスポートする
sb.Insert(0, "[use vcolor]");
break;
case MeshExportInfo.VertexColorState.ExistsButNotUsed:
sb.Insert(0, "[remove vcolor]");
break;
}
if (info.ExportBlendShapeCount > 0 && !info.HasSkinning)
{
sb.Insert(0, "[morph without skin]");
}
// total bytes
sb.Insert(0, $"{info.ExportByteSize:#,0} Bytes = ");
info.Summary = sb.ToString();
}