unsafe private void UpdateMeshPart(MVGraphAPI.MeshData meshData)
{
if (!m_meshPart)
{
m_meshPart = CreateNewMeshPart();
}
UInt32 collectionsCapacity = GetMinimalMeshCollectionsCapacity(meshData);
MvxUtils.EnsureCollectionMinimalCapacity <Vector3>(ref m_meshPartVertices, collectionsCapacity);
fixed(Vector3 *verticesPtr = m_meshPartVertices)
meshData.CopyVerticesRaw((IntPtr)verticesPtr);
if (!IgnoreNormals())
{
MvxUtils.EnsureCollectionMinimalCapacity <Vector3>(ref m_meshPartNormals, collectionsCapacity);
fixed(Vector3 *normalsPtr = m_meshPartNormals)
meshData.CopyNormalsRaw((IntPtr)normalsPtr);
}
if (!IgnoreColors())
{
MvxUtils.EnsureCollectionMinimalCapacity <Color32>(ref m_meshPartColors, collectionsCapacity);
fixed(Color32 *colorsPtr = m_meshPartColors)
meshData.CopyColorsRGBARaw((IntPtr)colorsPtr);
}
if (!IgnoreUVs())
{
MvxUtils.EnsureCollectionMinimalCapacity <Vector2>(ref m_meshPartUVs, collectionsCapacity);
fixed(Vector2 *uvsPtr = m_meshPartUVs)
meshData.CopyUVsRaw((IntPtr)uvsPtr);
}
UInt32 meshIndicesCount = GetFrameMeshIndicesCount(meshData);
if (meshIndicesCount == 0)
{
m_meshPart.gameObject.SetActive(false);
return;
}
MvxUtils.EnsureCollectionMinimalCapacity <Int32>(ref m_meshPartIndices, meshIndicesCount);
CopyMeshIndicesToCollection(meshData, m_meshPartIndices);
MVGraphAPI.MeshIndicesMode meshIndicesMode = GetFrameIndicesMode(meshData);
// fill the unused trailing of the indices collection with the last used index
Int32 unusedIndicesValue = m_meshPartIndices[(Int32)meshIndicesCount - 1];
for (UInt32 unusedIndex = meshIndicesCount; unusedIndex < m_meshPartIndices.Length; unusedIndex++)
{
m_meshPartIndices[unusedIndex] = unusedIndicesValue;
}
m_meshPart.UpdateMesh(m_meshPartVertices, m_meshPartNormals, m_meshPartColors, m_meshPartUVs, m_meshPartIndices, IndicesModeToMeshTopology(meshIndicesMode));
m_meshPart.gameObject.SetActive(true);
}
private MeshTopology IndicesModeToMeshTopology(MVGraphAPI.MeshIndicesMode indicesMode)
{
switch (indicesMode)
{
case MVGraphAPI.MeshIndicesMode.MIM_PointList: return(MeshTopology.Points);
case MVGraphAPI.MeshIndicesMode.MIM_LineList: return(MeshTopology.Lines);
case MVGraphAPI.MeshIndicesMode.MIM_TriangleList: return(MeshTopology.Triangles);
case MVGraphAPI.MeshIndicesMode.MIM_QuadList: return(MeshTopology.Quads);
default:
throw new System.ArgumentException("Missing conversion from an indices mode to a mesh topology");
}
}