public static void CopyFromPositionOnly(this UnityEngine.Mesh mesh, GeneratedMeshContents contents)
{
if (object.ReferenceEquals(contents, null))
{
throw new ArgumentNullException("contents");
}
if (contents.description.vertexCount < 3 ||
contents.description.indexCount < 3)
{
mesh.Clear();
return;
}
mesh.SetVertices(contents.positions);
mesh.SetTriangles(contents.indices.ToArray(), 0, false);
mesh.bounds = contents.bounds;
}
/// <summary>Creates and returns a <see cref="Chisel.Core.GeneratedMeshContents"/> for a given <see cref="Chisel.Core.GeneratedMeshDescription"/> created by <see cref="Chisel.Core.CSGTree.GetMeshDescriptions"/></summary>
/// <remarks>See the [Create Unity Meshes](~/documentation/createUnityMesh.md) article for more information.</remarks>
/// <param name="meshDescription">A <see cref="Chisel.Core.GeneratedMeshDescription"/> created by <see cref="Chisel.Core.CSGTree.GetMeshDescriptions"/>.</param>
/// <param name="previousGeneratedMeshContents">The previously generated <see cref="Chisel.Core.GeneratedMeshContents"/>, this can reuse allocated memory if the mesh hasn't changed shape. (optional)</param>
/// <returns>A <see cref="Chisel.Core.GeneratedMeshContents"/> that can be used to initialize a [UnityEngine.Mesh](https://docs.unity3d.com/ScriptReference/Mesh.html) with.</returns>
/// <seealso cref="Chisel.Core.CSGTree.GetMeshDescriptions"/>
public GeneratedMeshContents GetGeneratedMesh(GeneratedMeshDescription meshDescription, GeneratedMeshContents previousGeneratedMeshContents = null)
{
return(GetGeneratedMesh(treeNodeID, meshDescription, previousGeneratedMeshContents));
}
internal static GeneratedMeshContents GetGeneratedMesh(int treeNodeID, GeneratedMeshDescription meshDescription)
{
if (!AssertNodeIDValid(treeNodeID) || !AssertNodeType(treeNodeID, CSGNodeType.Tree))
{
return(null);
}
if (meshDescription.vertexCount <= 3 ||
meshDescription.indexCount <= 3)
{
Debug.LogWarning(string.Format("{0} called with a {1} that isn't valid", typeof(CSGTree).Name, typeof(GeneratedMeshDescription).Name));
return(null);
}
var meshIndex = meshDescription.meshQueryIndex;
var subMeshIndex = meshDescription.subMeshQueryIndex;
if (meshIndex < 0)
{
Debug.LogError("GetGeneratedMesh: MeshIndex cannot be negative"); return(null);
}
if (subMeshIndex < 0)
{
Debug.LogError("GetGeneratedMesh: SubMeshIndex cannot be negative"); return(null);
}
if (nodeHierarchies[treeNodeID - 1].treeInfo == null)
{
Debug.LogWarning("Tree has not been initialized properly"); return(null);
}
TreeInfo tree = nodeHierarchies[treeNodeID - 1].treeInfo;
if (tree == null)
{
Debug.LogError("GetGeneratedMesh: Invalid node index used"); return(null);
}
if (tree.subMeshCounts == null)
{
Debug.LogWarning("Tree has not been initialized properly"); return(null);
}
int subMeshCountSize = (int)tree.subMeshCounts.Count;
if (subMeshIndex >= (int)subMeshCountSize)
{
Debug.LogError("GetGeneratedMesh: SubMeshIndex is higher than the number of generated meshes"); return(null);
}
if (meshIndex >= (int)subMeshCountSize)
{
Debug.LogError("GetGeneratedMesh: MeshIndex is higher than the number of generated meshes"); return(null);
}
int foundIndex = -1;
for (int i = 0; i < subMeshCountSize; i++)
{
if (meshIndex == tree.subMeshCounts[i].meshIndex &&
subMeshIndex == tree.subMeshCounts[i].subMeshIndex)
{
foundIndex = i;
break;
}
}
if (foundIndex < 0 || foundIndex >= subMeshCountSize)
{
Debug.LogError("GetGeneratedMesh: Could not find mesh associated with MeshIndex/SubMeshIndex pair"); return(null);
}
var subMeshCount = tree.subMeshCounts[foundIndex];
if (subMeshCount.indexCount > meshDescription.indexCount)
{
Debug.LogError("GetGeneratedMesh: The destination indices array (" + meshDescription.indexCount + ") is smaller than the size of the source data (" + (int)subMeshCount.indexCount + ")"); return(null);
}
if (subMeshCount.vertexCount > meshDescription.vertexCount)
{
Debug.LogError("GetGeneratedMesh: The destination vertices array (" + meshDescription.vertexCount + ") is smaller than the size of the source data (" + (int)subMeshCount.vertexCount + ")"); return(null);
}
if (subMeshCount.indexCount == 0 || subMeshCount.vertexCount == 0)
{
Debug.LogWarning("GetGeneratedMesh: Mesh is empty"); return(null);
}
var generatedMesh = new GeneratedMeshContents();
var usedVertexChannels = meshDescription.meshQuery.UsedVertexChannels;
var vertexCount = meshDescription.vertexCount;
var indexCount = meshDescription.indexCount;
generatedMesh.description = meshDescription;
// create our arrays on the managed side with the correct size
bool useTangents = ((usedVertexChannels & VertexChannelFlags.Tangent) == VertexChannelFlags.Tangent);
bool useNormals = ((usedVertexChannels & VertexChannelFlags.Normal) == VertexChannelFlags.Normal);
bool useUV0 = ((usedVertexChannels & VertexChannelFlags.UV0) == VertexChannelFlags.UV0);
generatedMesh.tangents = useTangents ? new NativeArray <float4>(vertexCount, Allocator.Persistent) : default;
generatedMesh.normals = useNormals ? new NativeArray <float3>(vertexCount, Allocator.Persistent) : default;
generatedMesh.uv0 = useUV0 ? new NativeArray <float2>(vertexCount, Allocator.Persistent) : default;
generatedMesh.positions = new NativeArray <float3>(vertexCount, Allocator.Persistent);
generatedMesh.indices = new NativeArray <int> (indexCount, Allocator.Persistent);
generatedMesh.brushIndices = new NativeArray <int> (indexCount / 3, Allocator.Persistent);
generatedMesh.bounds = new Bounds();
var submeshVertexCount = subMeshCount.vertexCount;
var submeshIndexCount = subMeshCount.indexCount;
if (subMeshCount.surfaces == null ||
submeshVertexCount != generatedMesh.positions.Length ||
submeshIndexCount != generatedMesh.indices.Length ||
generatedMesh.indices == null ||
generatedMesh.positions == null)
{
return(null);
}
var submeshSurfaces = new NativeArray <SubMeshSurface>(subMeshCount.surfaces.Count, Allocator.TempJob);
for (int n = 0; n < subMeshCount.surfaces.Count; n++)
{
submeshSurfaces[n] = subMeshCount.surfaces[n];
}
var generateVertexBuffersJob = new GenerateVertexBuffersJob
{
meshQuery = subMeshCount.meshQuery,
surfaceIdentifier = subMeshCount.surfaceIdentifier,
submeshIndexCount = subMeshCount.indexCount,
submeshVertexCount = subMeshCount.vertexCount,
submeshSurfaces = submeshSurfaces,
generatedMeshIndices = generatedMesh.indices,
generatedMeshBrushIndices = generatedMesh.brushIndices,
generatedMeshPositions = generatedMesh.positions,
generatedMeshTangents = generatedMesh.tangents,
generatedMeshNormals = generatedMesh.normals,
generatedMeshUV0 = generatedMesh.uv0
};
generateVertexBuffersJob.Run();
generateVertexBuffersJob.submeshSurfaces.Dispose();
generateVertexBuffersJob.submeshSurfaces = default;
var min = new Vector3(float.PositiveInfinity, float.PositiveInfinity, float.PositiveInfinity);
var max = new Vector3(float.NegativeInfinity, float.NegativeInfinity, float.NegativeInfinity);
for (int i = 0, count = subMeshCount.indexCount; i < count; i++)
{
var position = generatedMesh.positions[generatedMesh.indices[i]];
min.x = Mathf.Min(min.x, position.x);
min.y = Mathf.Min(min.y, position.y);
min.z = Mathf.Min(min.z, position.z);
max.x = Mathf.Max(max.x, position.x);
max.y = Mathf.Max(max.y, position.y);
max.z = Mathf.Max(max.z, position.z);
}
var boundsCenter = (max + min) * 0.5f;
var boundsSize = (max - min);
if (float.IsInfinity(boundsSize.x) || float.IsInfinity(boundsSize.y) || float.IsInfinity(boundsSize.z) ||
float.IsNaN(boundsSize.x) || float.IsNaN(boundsSize.y) || float.IsNaN(boundsSize.z))
{
return(null);
}
generatedMesh.bounds = new Bounds(boundsCenter, boundsSize);
return(generatedMesh);
}
private static GeneratedMeshContents GetGeneratedMesh(int treeNodeID, GeneratedMeshDescription meshDescription, GeneratedMeshContents previousGeneratedMeshContents)
{
return(CSGManager.GetGeneratedMesh(treeNodeID, meshDescription, previousGeneratedMeshContents));
}
static bool GenerateVertexBuffers(SubMeshCounts subMeshCount, GeneratedMeshContents generatedMesh)
{
var submeshVertexCount = subMeshCount.vertexCount;
var submeshIndexCount = subMeshCount.indexCount;
var subMeshSurfaces = subMeshCount.surfaces;
if (subMeshSurfaces == null ||
submeshVertexCount != generatedMesh.positions.Length ||
submeshIndexCount != generatedMesh.indices.Length ||
generatedMesh.indices == null ||
generatedMesh.positions == null)
{
return(false);
}
bool needTangents = generatedMesh.tangents != null && (((Int32)subMeshCount.meshQuery.UsedVertexChannels & (Int32)VertexChannelFlags.Tangent) != 0);
bool needNormals = generatedMesh.normals != null && (((Int32)subMeshCount.meshQuery.UsedVertexChannels & (Int32)VertexChannelFlags.Normal) != 0);
bool needUV0s = generatedMesh.uv0 != null && (((Int32)subMeshCount.meshQuery.UsedVertexChannels & (Int32)VertexChannelFlags.UV0) != 0);
bool needTempNormals = needTangents && !needNormals;
bool needTempUV0 = needTangents && !needUV0s;
var normals = !needTempNormals ? generatedMesh.normals : new Vector3[submeshVertexCount];
var uv0s = !needTempUV0 ? generatedMesh.uv0 : new Vector2[submeshVertexCount];
// double snap_size = 1.0 / ants.SnapDistance();
// copy all the vertices & indices to the sub-meshes for each material
for (int surfaceIndex = 0, indexOffset = 0, vertexOffset = 0, surfaceCount = (int)subMeshSurfaces.Count;
surfaceIndex < surfaceCount;
++surfaceIndex)
{
var sourceBuffer = subMeshSurfaces[surfaceIndex];
if (sourceBuffer.indices == null ||
sourceBuffer.vertices == null ||
sourceBuffer.indices.Length == 0 ||
sourceBuffer.vertices.Length == 0)
{
continue;
}
for (int i = 0, sourceIndexCount = sourceBuffer.indices.Length; i < sourceIndexCount; i++)
{
generatedMesh.indices[indexOffset] = (int)(sourceBuffer.indices[i] + vertexOffset);
indexOffset++;
}
var sourceVertexCount = sourceBuffer.vertices.Length;
Array.Copy(sourceBuffer.vertices, 0, generatedMesh.positions, vertexOffset, sourceVertexCount);
if (needUV0s || needTangents)
{
Array.Copy(sourceBuffer.uv0, 0, uv0s, vertexOffset, sourceVertexCount);
}
if (needNormals || needTangents)
{
Array.Copy(sourceBuffer.normals, 0, normals, vertexOffset, sourceVertexCount);
}
vertexOffset += sourceVertexCount;
}
if (needTangents)
{
ComputeTangents(generatedMesh.indices,
generatedMesh.positions,
uv0s,
normals,
generatedMesh.tangents);
}
return(true);
}
internal static GeneratedMeshContents GetGeneratedMesh(int treeNodeID, GeneratedMeshDescription meshDescription, GeneratedMeshContents previousGeneratedMeshContents)
{
if (!AssertNodeIDValid(treeNodeID) || !AssertNodeType(treeNodeID, CSGNodeType.Tree))
{
return(null);
}
if (meshDescription.vertexCount <= 0 ||
meshDescription.indexCount <= 0)
{
Debug.LogWarning(string.Format("{0} called with a {1} that isn't valid", typeof(CSGTree).Name, typeof(GeneratedMeshDescription).Name));
return(null);
}
var meshIndex = meshDescription.meshQueryIndex;
var subMeshIndex = meshDescription.subMeshQueryIndex;
if (meshIndex < 0)
{
Debug.LogError("GetGeneratedMesh: MeshIndex cannot be negative"); return(null);
}
if (subMeshIndex < 0)
{
Debug.LogError("GetGeneratedMesh: SubMeshIndex cannot be negative"); return(null);
}
if (nodeHierarchies[treeNodeID - 1].treeInfo == null)
{
Debug.LogWarning("Tree has not been initialized properly"); return(null);
}
TreeInfo tree = nodeHierarchies[treeNodeID - 1].treeInfo;
if (tree == null)
{
Debug.LogError("GetGeneratedMesh: Invalid node index used"); return(null);
}
if (tree.subMeshCounts == null)
{
Debug.LogWarning("Tree has not been initialized properly"); return(null);
}
int subMeshCountSize = (int)tree.subMeshCounts.Count;
if (subMeshIndex >= (int)subMeshCountSize)
{
Debug.LogError("GetGeneratedMesh: SubMeshIndex is higher than the number of generated meshes"); return(null);
}
if (meshIndex >= (int)subMeshCountSize)
{
Debug.LogError("GetGeneratedMesh: MeshIndex is higher than the number of generated meshes"); return(null);
}
int foundIndex = -1;
for (int i = 0; i < subMeshCountSize; i++)
{
if (meshIndex == tree.subMeshCounts[i].meshIndex &&
subMeshIndex == tree.subMeshCounts[i].subMeshIndex)
{
foundIndex = i;
break;
}
}
if (foundIndex < 0 || foundIndex >= subMeshCountSize)
{
Debug.LogError("GetGeneratedMesh: Could not find mesh associated with MeshIndex/SubMeshIndex pair"); return(null);
}
var subMeshCount = tree.subMeshCounts[foundIndex];
if (subMeshCount.indexCount > meshDescription.indexCount)
{
Debug.LogError("GetGeneratedMesh: The destination indices array (" + meshDescription.indexCount + ") is smaller than the size of the source data (" + (int)subMeshCount.indexCount + ")"); return(null);
}
if (subMeshCount.vertexCount > meshDescription.vertexCount)
{
Debug.LogError("GetGeneratedMesh: The destination vertices array (" + meshDescription.vertexCount + ") is smaller than the size of the source data (" + (int)subMeshCount.vertexCount + ")"); return(null);
}
if (subMeshCount.indexCount == 0 || subMeshCount.vertexCount == 0)
{
Debug.LogWarning("GetGeneratedMesh: Mesh is empty"); return(null);
}
var generatedMesh = (previousGeneratedMeshContents != null) ? previousGeneratedMeshContents : new GeneratedMeshContents();
var usedVertexChannels = meshDescription.meshQuery.UsedVertexChannels;
var vertexCount = meshDescription.vertexCount;
var indexCount = meshDescription.indexCount;
generatedMesh.description = meshDescription;
// create our arrays on the managed side with the correct size
generatedMesh.tangents = ((usedVertexChannels & VertexChannelFlags.Tangent) == 0) ? null : (generatedMesh.tangents != null && generatedMesh.tangents.Length == vertexCount) ? generatedMesh.tangents : new Vector4[vertexCount];
generatedMesh.normals = ((usedVertexChannels & VertexChannelFlags.Normal) == 0) ? null : (generatedMesh.normals != null && generatedMesh.normals.Length == vertexCount) ? generatedMesh.normals : new Vector3[vertexCount];
generatedMesh.uv0 = ((usedVertexChannels & VertexChannelFlags.UV0) == 0) ? null : (generatedMesh.uv0 != null && generatedMesh.uv0.Length == vertexCount) ? generatedMesh.uv0 : new Vector2[vertexCount];
generatedMesh.positions = (generatedMesh.positions != null && generatedMesh.positions.Length == vertexCount) ? generatedMesh.positions : new Vector3[vertexCount];
generatedMesh.indices = (generatedMesh.indices != null && generatedMesh.indices.Length == indexCount) ? generatedMesh.indices : new int [indexCount];
generatedMesh.bounds = new Bounds();
bool result = CSGManager.GenerateVertexBuffers(subMeshCount, generatedMesh);
if (!result)
{
return(null);
}
var min = new Vector3(float.PositiveInfinity, float.PositiveInfinity, float.PositiveInfinity);
var max = new Vector3(float.NegativeInfinity, float.NegativeInfinity, float.NegativeInfinity);
for (int i = 0, count = subMeshCount.indexCount; i < count; i++)
{
var position = generatedMesh.positions[generatedMesh.indices[i]];
min.x = Mathf.Min(min.x, position.x);
min.y = Mathf.Min(min.y, position.y);
min.z = Mathf.Min(min.z, position.z);
max.x = Mathf.Max(max.x, position.x);
max.y = Mathf.Max(max.y, position.y);
max.z = Mathf.Max(max.z, position.z);
}
var boundsCenter = (max + min) * 0.5f;
var boundsSize = (max - min);
if (float.IsInfinity(boundsSize.x) || float.IsInfinity(boundsSize.y) || float.IsInfinity(boundsSize.z) ||
float.IsNaN(boundsSize.x) || float.IsNaN(boundsSize.y) || float.IsNaN(boundsSize.z))
{
return(null);
}
generatedMesh.bounds = new Bounds(boundsCenter, boundsSize);
return(generatedMesh);
}
private static GeneratedMeshContents GetGeneratedMesh(int treeNodeID, GeneratedMeshDescription meshDescription, GeneratedMeshContents previousGeneratedMeshContents)
{
if (meshDescription.vertexCount <= 0 ||
meshDescription.indexCount <= 0)
{
Debug.LogWarning(string.Format("{0} called with a {1} that isn't valid", typeof(CSGTree).Name, typeof(GeneratedMeshDescription).Name));
return(null);
}
var generatedMesh = (previousGeneratedMeshContents != null) ? previousGeneratedMeshContents : new GeneratedMeshContents();
var usedVertexChannels = meshDescription.meshQuery.UsedVertexChannels;
var vertexCount = meshDescription.vertexCount;
var indexCount = meshDescription.indexCount;
var meshIndex = meshDescription.meshQueryIndex;
var subMeshIndex = meshDescription.subMeshQueryIndex;
generatedMesh.description = meshDescription;
// create our arrays on the managed side with the correct size
generatedMesh.tangents = ((usedVertexChannels & VertexChannelFlags.Tangent) == 0) ? null : (generatedMesh.tangents != null && generatedMesh.tangents.Length == vertexCount) ? generatedMesh.tangents : new Vector4[vertexCount];
generatedMesh.normals = ((usedVertexChannels & VertexChannelFlags.Normal) == 0) ? null : (generatedMesh.normals != null && generatedMesh.normals.Length == vertexCount) ? generatedMesh.normals : new Vector3[vertexCount];
generatedMesh.uv0 = ((usedVertexChannels & VertexChannelFlags.UV0) == 0) ? null : (generatedMesh.uv0 != null && generatedMesh.uv0.Length == vertexCount) ? generatedMesh.uv0 : new Vector2[vertexCount];
generatedMesh.positions = (generatedMesh.positions != null && generatedMesh.positions.Length == vertexCount) ? generatedMesh.positions : new Vector3[vertexCount];
generatedMesh.indices = (generatedMesh.indices != null && generatedMesh.indices.Length == indexCount) ? generatedMesh.indices : new int [indexCount];
var indicesHandle = GCHandle.Alloc(generatedMesh.indices, GCHandleType.Pinned);
var positionHandle = GCHandle.Alloc(generatedMesh.positions, GCHandleType.Pinned);
var tangentHandle = new GCHandle();
var normalHandle = new GCHandle();
var uv0Handle = new GCHandle();
var indicesPtr = indicesHandle.AddrOfPinnedObject();
var positionPtr = positionHandle.AddrOfPinnedObject();
var tangentPtr = IntPtr.Zero;
var normalPtr = IntPtr.Zero;
var uv0Ptr = IntPtr.Zero;
if (generatedMesh.tangents != null)
{
tangentHandle = GCHandle.Alloc(generatedMesh.tangents, GCHandleType.Pinned); tangentPtr = tangentHandle.AddrOfPinnedObject();
}
if (generatedMesh.normals != null)
{
normalHandle = GCHandle.Alloc(generatedMesh.normals, GCHandleType.Pinned); normalPtr = normalHandle.AddrOfPinnedObject();
}
if (generatedMesh.uv0 != null)
{
uv0Handle = GCHandle.Alloc(generatedMesh.uv0, GCHandleType.Pinned); uv0Ptr = uv0Handle.AddrOfPinnedObject();
}
var boundsCenter = Vector3.zero;
var boundsSize = Vector3.zero;
var result = GetGeneratedMesh((Int32)treeNodeID,
(Int32)meshIndex,
(Int32)subMeshIndex,
(Int32)indexCount,
indicesPtr,
(Int32)vertexCount,
positionPtr,
tangentPtr,
normalPtr,
uv0Ptr,
out boundsCenter,
out boundsSize);
if (generatedMesh.uv0 != null)
{
uv0Handle.Free();
}
if (generatedMesh.normals != null)
{
normalHandle.Free();
}
if (generatedMesh.tangents != null)
{
tangentHandle.Free();
}
positionHandle.Free();
indicesHandle.Free();
if (!result ||
float.IsInfinity(boundsSize.x) || float.IsInfinity(boundsSize.y) || float.IsInfinity(boundsSize.z) ||
float.IsNaN(boundsSize.x) || float.IsNaN(boundsSize.y) || float.IsNaN(boundsSize.z))
{
return(null);
}
generatedMesh.bounds = new Bounds(boundsCenter, boundsSize);
return(generatedMesh);
}
