/// <summary>
/// Compile a UnityEngine.Mesh from a ProBuilderMesh.
/// </summary>
/// <param name="probuilderMesh">The mesh source.</param>
/// <param name="targetMesh">Destination UnityEngine.Mesh.</param>
/// <param name="preferredTopology">If specified, the function will try to create topology matching the reqested format (and falling back on triangles where necessary).</param>
/// <returns>The resulting material array from the compiled faces array. This is suitable to assign to the MeshRenderer.sharedMaterials property.</returns>
public static void Compile(ProBuilderMesh probuilderMesh, Mesh targetMesh, MeshTopology preferredTopology = MeshTopology.Triangles)
{
if (probuilderMesh == null)
{
throw new ArgumentNullException("probuilderMesh");
}
if (targetMesh == null)
{
throw new ArgumentNullException("targetMesh");
}
targetMesh.Clear();
targetMesh.vertices = probuilderMesh.positionsInternal;
targetMesh.uv = probuilderMesh.texturesInternal;
if (probuilderMesh.HasArrays(MeshArrays.Texture2))
{
List <Vector4> uvChannel = new List <Vector4>();
probuilderMesh.GetUVs(2, uvChannel);
targetMesh.SetUVs(2, uvChannel);
}
if (probuilderMesh.HasArrays(MeshArrays.Texture3))
{
List <Vector4> uvChannel = new List <Vector4>();
probuilderMesh.GetUVs(3, uvChannel);
targetMesh.SetUVs(3, uvChannel);
}
targetMesh.normals = probuilderMesh.GetNormals();
targetMesh.tangents = probuilderMesh.GetTangents();
if (probuilderMesh.HasArrays(MeshArrays.Color))
{
targetMesh.colors = probuilderMesh.colorsInternal;
}
var materialCount = probuilderMesh.GetComponent <Renderer>().sharedMaterials.Length;
var submeshes = Submesh.GetSubmeshes(probuilderMesh.facesInternal, materialCount, preferredTopology);
targetMesh.subMeshCount = submeshes.Length;
for (int i = 0; i < targetMesh.subMeshCount; i++)
{
targetMesh.SetIndices(submeshes[i].m_Indexes, submeshes[i].m_Topology, i, false);
}
targetMesh.name = string.Format("pb_Mesh{0}", probuilderMesh.id);
}
