private static void CreateSDFMesh(MenuCommand menuCommand)
{
GameObject selection = Selection.activeGameObject;
GameObject child = new GameObject("Mesh");
child.transform.SetParent(selection.transform);
child.transform.Reset();
SDFMesh newMesh = child.AddComponent <SDFMesh>();
Selection.activeGameObject = child;
}
/// <summary>
/// Some mesh data is shared across all instances, such as the sample and UV information as well as the start indices in those static buffers
/// for all meshes. Returns true if the static buffers have been changed and need to be resent to the groups.
/// </summary>
/// <param name="locals">List of SDFMesh objects to ensure are in the global list.</param>
/// <param name="onlySendBufferOnChange">Whether to invoke the components and inform them the buffer has changed. This is only really necessary when the size changes.</param>
private static bool RebuildGlobalMeshData(IList <SDFObject> locals, bool onlySendBufferOnChange = true)
{
int previousMeshSamplesCount = m_meshSamples.Count;
int previousMeshUVsCount = m_meshPackedUVs.Count;
m_meshSamples.Clear();
m_meshPackedUVs.Clear();
m_meshSdfSampleStartIndices.Clear();
m_meshSdfUVStartIndices.Clear();
// remove null refs
for (int i = m_globalSDFMeshes.Count - 1; i >= 0; --i)
{
if (m_globalSDFMeshes[i] == null || m_globalSDFMeshes[i].Asset == null)
{
m_globalSDFMeshes.RemoveAt(i);
}
}
for (int i = 0; i < locals.Count; i++)
{
if (locals[i] is SDFMesh mesh && !m_globalSDFMeshes.Contains(mesh))
{
m_globalSDFMeshes.Add(mesh);
}
}
// loop over each mesh, adding its samples/uvs to the sample buffer
// and taking note of where each meshes samples start in the buffer.
// check for repeats so we don't add the same mesh to the samples buffer twice
for (int i = 0; i < m_globalSDFMeshes.Count; i++)
{
SDFMesh mesh = m_globalSDFMeshes[i];
// ignore meshes which are in the list but not present in any group
if (m_meshCounts.TryGetValue(mesh.ID, out int count) && count <= 0)
{
continue;
}
mesh.Asset.GetDataArrays(out float[] samples, out float[] packedUVs);
if (!m_meshSdfSampleStartIndices.ContainsKey(mesh.ID))
{
int startIndex = m_meshSamples.Count;
m_meshSamples.AddRange(samples);
m_meshSdfSampleStartIndices.Add(mesh.ID, startIndex);
}
if (mesh.Asset.HasUVs && !m_meshSdfUVStartIndices.ContainsKey(mesh.ID))
{
int startIndex = m_meshPackedUVs.Count;
m_meshPackedUVs.AddRange(packedUVs);
m_meshSdfUVStartIndices.Add(mesh.ID, startIndex);
}
}
bool newBuffers = false;
if (m_meshSamplesBuffer == null || !m_meshSamplesBuffer.IsValid() || previousMeshSamplesCount != m_meshSamples.Count)
{
m_meshSamplesBuffer?.Dispose();
m_meshSamplesBuffer = new ComputeBuffer(Mathf.Max(1, m_meshSamples.Count), sizeof(float), ComputeBufferType.Structured);
newBuffers = true;
}
if (m_meshSamples.Count > 0)
{
m_meshSamplesBuffer.SetData(m_meshSamples);
}
if (m_meshPackedUVsBuffer == null || !m_meshPackedUVsBuffer.IsValid() || previousMeshUVsCount != m_meshPackedUVs.Count)
{
m_meshPackedUVsBuffer?.Dispose();
m_meshPackedUVsBuffer = new ComputeBuffer(Mathf.Max(1, m_meshPackedUVs.Count), sizeof(float), ComputeBufferType.Structured);
newBuffers = true;
}
if (m_meshPackedUVs.Count > 0)
{
m_meshPackedUVsBuffer.SetData(m_meshPackedUVs);
}
m_isGlobalMeshDataDirty = false;
return(newBuffers);
}