/// <summary>
/// Apply the weights to "mesh"
/// </summary>
/// <param name="mesh">The mesh we want to apply weights to</param>
internal void Apply(PolyMesh mesh)
{
foreach (AttributeLayout al in attributeLayout)
{
switch (al.channel)
{
case MeshChannel.UV0:
case MeshChannel.UV2:
case MeshChannel.UV3:
case MeshChannel.UV4:
{
List <Vector4> uv = new List <Vector4>(weights[channelMap[al.channel]]);
mesh.SetUVs(MeshChannelUtility.UVChannelToIndex(al.channel), uv);
}
break;
case MeshChannel.Color:
{
// @todo consider storing Color array separate from Vec4 since this cast costs ~5ms
mesh.colors = System.Array.ConvertAll(weights[channelMap[al.channel]], x => Vec4ToColor32(x));
break;
}
case MeshChannel.Tangent:
{
mesh.tangents = weights[channelMap[MeshChannel.Tangent]];
break;
}
}
}
}
internal void ApplyAttributesFromUnityMesh(Mesh mesh, MeshChannel attrib = MeshChannel.All)
{
#pragma warning disable 0162
if (attrib == MeshChannel.All)
{
vertices = mesh.vertices;
normals = mesh.normals;
colors = mesh.colors32;
tangents = mesh.tangents;
mesh.GetUVs(MeshChannelUtility.UVChannelToIndex(MeshChannel.UV0), uv0);
mesh.GetUVs(MeshChannelUtility.UVChannelToIndex(MeshChannel.UV2), uv1);
mesh.GetUVs(MeshChannelUtility.UVChannelToIndex(MeshChannel.UV3), uv2);
mesh.GetUVs(MeshChannelUtility.UVChannelToIndex(MeshChannel.UV4), uv3);
/// Update submeshes only if there were none set or if we are no
/// about to change the submeshCount.
if (subMeshCount == 0 || mesh.subMeshCount == subMeshCount)
{
SetSubMeshes(mesh);
RefreshTriangles();
}
}
else
{
if ((attrib & MeshChannel.Position) > 0)
{
vertices = mesh.vertices;
}
if ((attrib & MeshChannel.Normal) > 0)
{
normals = mesh.normals;
}
if ((attrib & MeshChannel.Color) > 0)
{
colors = mesh.colors32;
}
if ((attrib & MeshChannel.Tangent) > 0)
{
tangents = mesh.tangents;
}
if ((attrib & MeshChannel.UV0) > 0)
{
mesh.GetUVs(MeshChannelUtility.UVChannelToIndex(MeshChannel.UV0), uv0);
}
if ((attrib & MeshChannel.UV2) > 0)
{
mesh.GetUVs(MeshChannelUtility.UVChannelToIndex(MeshChannel.UV2), uv1);
}
if ((attrib & MeshChannel.UV3) > 0)
{
mesh.GetUVs(MeshChannelUtility.UVChannelToIndex(MeshChannel.UV3), uv2);
}
if ((attrib & MeshChannel.UV4) > 0)
{
mesh.GetUVs(MeshChannelUtility.UVChannelToIndex(MeshChannel.UV4), uv3);
}
}
#pragma warning restore 0162
}
/// <summary>
/// Initialize a SplatSet with mesh and attribute layout.
/// </summary>
/// <param name="mesh"></param>
/// <param name="attributes"></param>
internal SplatSet(PolyMesh mesh, AttributeLayout[] attributes) : this(mesh.vertexCount, attributes, false)
{
foreach (var kvp in channelMap)
{
switch (kvp.Key)
{
case MeshChannel.UV0:
case MeshChannel.UV2:
case MeshChannel.UV3:
case MeshChannel.UV4:
{
List <Vector4> uv = mesh.GetUVs(MeshChannelUtility.UVChannelToIndex(kvp.Key));
weights[kvp.Value] = uv.Count == weightCount?uv.ToArray() : new Vector4[weightCount];
}
break;
case MeshChannel.Color:
{
Color32[] color = mesh.colors;
weights[kvp.Value] = color != null && color.Length == weightCount?System.Array.ConvertAll(color, x => Color32ToVec4(x)) : new Vector4[weightCount];
}
break;
case MeshChannel.Tangent:
{
Vector4[] tangent = mesh.tangents;
weights[kvp.Value] = tangent != null && tangent.Length == weightCount ? tangent : new Vector4[weightCount];
}
break;
}
}
}
/// <summary>
/// Apply the vertex attributes to a UnityEngine mesh (does not set triangles)
/// </summary>
/// <param name="mesh"></param>
/// <param name="attrib"></param>
internal void ApplyAttributesToUnityMesh(Mesh mesh, MeshChannel attrib = MeshChannel.All)
{
// I guess the default value for attrib makes the compiler think that else is never
// activated?
#pragma warning disable 0162
if (attrib == MeshChannel.All)
{
mesh.vertices = vertices;
mesh.normals = normals;
mesh.colors32 = colors;
mesh.tangents = tangents;
mesh.SetUVs(MeshChannelUtility.UVChannelToIndex(MeshChannel.UV0), uv0);
mesh.SetUVs(MeshChannelUtility.UVChannelToIndex(MeshChannel.UV2), uv1);
mesh.SetUVs(MeshChannelUtility.UVChannelToIndex(MeshChannel.UV3), uv2);
mesh.SetUVs(MeshChannelUtility.UVChannelToIndex(MeshChannel.UV4), uv3);
mesh.subMeshCount = subMeshCount;
for (int i = 0; i < subMeshCount; ++i)
{
mesh.SetIndices(m_SubMeshes[i].indexes, m_SubMeshes[i].topology, i);
}
RefreshTriangles();
}
else
{
if ((attrib & MeshChannel.Position) > 0)
{
mesh.vertices = vertices;
}
if ((attrib & MeshChannel.Normal) > 0)
{
mesh.normals = normals;
}
if ((attrib & MeshChannel.Color) > 0)
{
mesh.colors32 = colors;
}
if ((attrib & MeshChannel.Tangent) > 0)
{
mesh.tangents = tangents;
}
if ((attrib & MeshChannel.UV0) > 0)
{
mesh.SetUVs(MeshChannelUtility.UVChannelToIndex(MeshChannel.UV0), uv0);
}
if ((attrib & MeshChannel.UV2) > 0)
{
mesh.SetUVs(MeshChannelUtility.UVChannelToIndex(MeshChannel.UV2), uv1);
}
if ((attrib & MeshChannel.UV3) > 0)
{
mesh.SetUVs(MeshChannelUtility.UVChannelToIndex(MeshChannel.UV3), uv2);
}
if ((attrib & MeshChannel.UV4) > 0)
{
mesh.SetUVs(MeshChannelUtility.UVChannelToIndex(MeshChannel.UV4), uv3);
}
}
#pragma warning restore 0162
}