/// <summary>
/// Creates a new mesh.
/// </summary>
/// <param name="vertices">The mesh vertices.</param>
/// <param name="indices">The mesh sub-mesh indices.</param>
/// <param name="normals">The mesh normals.</param>
/// <param name="tangents">The mesh tangents.</param>
/// <param name="colors">The mesh colors.</param>
/// <param name="boneWeights">The mesh bone-weights.</param>
/// <param name="uvs2D">The mesh 2D UV sets.</param>
/// <param name="uvs3D">The mesh 3D UV sets.</param>
/// <param name="uvs4D">The mesh 4D UV sets.</param>
/// <param name="bindposes">The mesh bindposes.</param>
/// <returns>The created mesh.</returns>
public static Mesh CreateMesh(Vector3[] vertices, int[][] indices, Vector3[] normals, Vector4[] tangents, Color[] colors, BoneWeight[] boneWeights, List <Vector2>[] uvs2D, List <Vector3>[] uvs3D, List <Vector4>[] uvs4D, Matrix4x4[] bindposes, BlendShape[] blendShapes)
{
if (vertices == null)
{
throw new ArgumentNullException(nameof(vertices));
}
else if (indices == null)
{
throw new ArgumentNullException(nameof(indices));
}
var newMesh = new Mesh();
int subMeshCount = indices.Length;
#if UNITY_MESH_INDEXFORMAT_SUPPORT
IndexFormat indexFormat;
var indexMinMax = MeshUtils.GetSubMeshIndexMinMax(indices, out indexFormat);
newMesh.indexFormat = indexFormat;
#endif
if (bindposes != null && bindposes.Length > 0)
{
newMesh.bindposes = bindposes;
}
newMesh.subMeshCount = subMeshCount;
newMesh.vertices = vertices;
if (normals != null && normals.Length > 0)
{
newMesh.normals = normals;
}
if (tangents != null && tangents.Length > 0)
{
newMesh.tangents = tangents;
}
if (colors != null && colors.Length > 0)
{
newMesh.colors = colors;
}
if (boneWeights != null && boneWeights.Length > 0)
{
newMesh.boneWeights = boneWeights;
}
if (uvs2D != null)
{
for (int uvChannel = 0; uvChannel < uvs2D.Length; uvChannel++)
{
if (uvs2D[uvChannel] != null && uvs2D[uvChannel].Count > 0)
{
newMesh.SetUVs(uvChannel, uvs2D[uvChannel]);
}
}
}
if (uvs3D != null)
{
for (int uvChannel = 0; uvChannel < uvs3D.Length; uvChannel++)
{
if (uvs3D[uvChannel] != null && uvs3D[uvChannel].Count > 0)
{
newMesh.SetUVs(uvChannel, uvs3D[uvChannel]);
}
}
}
if (uvs4D != null)
{
for (int uvChannel = 0; uvChannel < uvs4D.Length; uvChannel++)
{
if (uvs4D[uvChannel] != null && uvs4D[uvChannel].Count > 0)
{
newMesh.SetUVs(uvChannel, uvs4D[uvChannel]);
}
}
}
if (blendShapes != null)
{
MeshUtils.ApplyMeshBlendShapes(newMesh, blendShapes);
}
for (int subMeshIndex = 0; subMeshIndex < subMeshCount; subMeshIndex++)
{
var subMeshTriangles = indices[subMeshIndex];
#if UNITY_MESH_INDEXFORMAT_SUPPORT
var minMax = indexMinMax[subMeshIndex];
if (indexFormat == UnityEngine.Rendering.IndexFormat.UInt16 && minMax.y > ushort.MaxValue)
{
int baseVertex = minMax.x;
for (int index = 0; index < subMeshTriangles.Length; index++)
{
subMeshTriangles[index] -= baseVertex;
}
newMesh.SetTriangles(subMeshTriangles, subMeshIndex, false, baseVertex);
}
else
{
newMesh.SetTriangles(subMeshTriangles, subMeshIndex, false, 0);
}
#else
newMesh.SetTriangles(subMeshTriangles, subMeshIndex, false);
#endif
}
newMesh.RecalculateBounds();
return(newMesh);
}
/// <summary>
/// Creates a new mesh.
/// </summary>
/// <param name="vertices">The mesh vertices.</param>
/// <param name="indices">The mesh sub-mesh indices.</param>
/// <param name="normals">The mesh normals.</param>
/// <param name="tangents">The mesh tangents.</param>
/// <param name="colors">The mesh colors.</param>
/// <param name="boneWeights">The mesh bone-weights.</param>
/// <param name="uvs2D">The mesh 2D UV sets.</param>
/// <param name="uvs3D">The mesh 3D UV sets.</param>
/// <param name="uvs4D">The mesh 4D UV sets.</param>
/// <param name="bindposes">The mesh bindposes.</param>
/// <returns>The created mesh.</returns>
public static Mesh CreateMesh(Vector3[] vertices, int[][] indices, Vector3[] normals, Vector4[] tangents, Color[] colors, BoneWeight[] boneWeights, List <Vector2>[] uvs2D, List <Vector3>[] uvs3D, List <Vector4>[] uvs4D, Matrix4x4[] bindposes, BlendShape[] blendShapes)
{
var newMesh = new Mesh();
int subMeshCount = indices.Length;
#if UNITY_MESH_INDEXFORMAT_SUPPORT
IndexFormat indexFormat;
var indexMinMax = MeshUtils.GetSubMeshIndexMinMax(indices, out indexFormat);
newMesh.indexFormat = indexFormat;
#endif
if (bindposes != null && bindposes.Length > 0)
{
newMesh.bindposes = bindposes;
}
newMesh.subMeshCount = subMeshCount;
newMesh.vertices = vertices;
// If after assigning normals blendshapes are assigned, then blendshapes do not work correctly
// In URP and HDRP configurations, so we add blendshapes first and then assign normals
if (blendShapes != null)
{
MeshUtils.ApplyMeshBlendShapes(newMesh, blendShapes);
}
if (normals != null && normals.Length > 0)
{
newMesh.normals = normals;
}
if (tangents != null && tangents.Length > 0)
{
newMesh.tangents = tangents;
}
if (colors != null && colors.Length > 0)
{
newMesh.colors = colors;
}
if (boneWeights != null && boneWeights.Length > 0)
{
newMesh.boneWeights = boneWeights;
}
if (uvs2D != null)
{
for (int uvChannel = 0; uvChannel < uvs2D.Length; uvChannel++)
{
if (uvs2D[uvChannel] != null && uvs2D[uvChannel].Count > 0)
{
newMesh.SetUVs(uvChannel, uvs2D[uvChannel]);
}
}
}
if (uvs3D != null)
{
for (int uvChannel = 0; uvChannel < uvs3D.Length; uvChannel++)
{
if (uvs3D[uvChannel] != null && uvs3D[uvChannel].Count > 0)
{
newMesh.SetUVs(uvChannel, uvs3D[uvChannel]);
}
}
}
if (uvs4D != null)
{
for (int uvChannel = 0; uvChannel < uvs4D.Length; uvChannel++)
{
if (uvs4D[uvChannel] != null && uvs4D[uvChannel].Count > 0)
{
newMesh.SetUVs(uvChannel, uvs4D[uvChannel]);
}
}
}
//if (blendShapes != null)
//{
// MeshUtils.ApplyMeshBlendShapes(newMesh, blendShapes); //baw did
//}
for (int subMeshIndex = 0; subMeshIndex < subMeshCount; subMeshIndex++)
{
var subMeshTriangles = indices[subMeshIndex];
#if UNITY_MESH_INDEXFORMAT_SUPPORT
var minMax = indexMinMax[subMeshIndex];
if (indexFormat == UnityEngine.Rendering.IndexFormat.UInt16 && minMax.y > ushort.MaxValue)
{
int baseVertex = minMax.x;
for (int index = 0; index < subMeshTriangles.Length; index++)
{
subMeshTriangles[index] -= baseVertex;
}
newMesh.SetTriangles(subMeshTriangles, subMeshIndex, false, baseVertex);
}
else
{
newMesh.SetTriangles(subMeshTriangles, subMeshIndex, false, 0);
}
#else
newMesh.SetTriangles(subMeshTriangles, subMeshIndex, false);
#endif
}
newMesh.RecalculateBounds();
return(newMesh);
}
