private static CollisionMeshData CreateDataOptionallyReduce(Mesh mesh,
CollisionMeshOptions options,
Utils.MeshMerger merger)
{
var reductionEnabled = options != null && options.ReductionEnabled;
var orgNumVertices = merger.Vertices.Count;
if (reductionEnabled)
{
merger.Reduce(options.ReductionRatio, options.ReductionAggressiveness);
}
if (merger.Vertices.Count == 0)
{
if (reductionEnabled && orgNumVertices > 0)
{
UnityEngine.Debug.LogWarning($"Vertex Reduction reduced a collision mesh from {orgNumVertices} vertices to zero. " +
"Ignoring collision mesh.", mesh);
}
else
{
UnityEngine.Debug.LogWarning($"Mesh \"{mesh.name}\" doesn't contain any vertices for the collision mesh. " +
"Ignoring collision mesh.", mesh);
}
return(null);
}
var meshData = new CollisionMeshData();
meshData.Apply(merger.Vertices, merger.Indices);
return(meshData);
}
private Task <Result[]> Create(Mesh[] meshes, CollisionMeshOptions[] meshOptions)
{
var mergers = meshes.Select(mesh => Utils.MeshMerger.Merge(null, mesh.SourceObjects)).ToArray();
var totNumVertices = mergers.Sum(merger => merger.Vertices.Count);
Progress = 0.0f;
var numProcessedVertices = 0;
return(Task.Run(() =>
{
var results = new Result[meshes.Length];
NativeHandler.Instance.RegisterCurrentThread();
for (int i = 0; i < meshes.Length; ++i)
{
var mesh = meshes[i];
var options = meshOptions[i];
var merger = mergers[i];
numProcessedVertices += merger.Vertices.Count;
if (options == null || options.Mode == CollisionMeshOptions.MeshMode.Trimesh)
{
var collisionMesh = CreateDataOptionallyReduce(mesh,
options,
merger);
var result = new Result()
{
Mesh = mesh,
Options = options,
CollisionMeshes = collisionMesh != null ?
new CollisionMeshData[] { collisionMesh } :
null
};
results[i] = result;
}
else if (options.Mode == CollisionMeshOptions.MeshMode.Convex)
{
CollisionMeshData collisionMesh = null;
using (var tmpConvex = agxUtil.agxUtilSWIG.createConvexRef(merger.Vertices))
collisionMesh = CreateDataOptionallyReduce(mesh,
options,
merger,
tmpConvex.get());
var result = new Result()
{
Mesh = mesh,
Options = options,
CollisionMeshes = collisionMesh != null ?
new CollisionMeshData[] { collisionMesh } :
null
};
results[i] = result;
}
else if (options.Mode == CollisionMeshOptions.MeshMode.ConvexDecomposition)
{
var result = new Result()
{
Mesh = mesh,
Options = options,
CollisionMeshes = null
};
var convexes = new agxCollide.ConvexVector();
var elementsPerAxis = options.ElementResolutionPerAxis;
agxUtil.agxUtilSWIG.createVHACDConvexDecomposition(merger.Vertices,
merger.Indices,
convexes,
(uint)elementsPerAxis);
if (convexes.Count == 0)
{
UnityEngine.Debug.LogWarning($"Convex Decomposition of {mesh} resulted in zero convex shapes.", mesh);
}
var collisionMeshes = (from convexRef in convexes
let collisionMesh = CreateDataOptionallyReduce(mesh,
options,
merger,
convexRef.get())
where collisionMesh != null
select collisionMesh).ToArray();
if (collisionMeshes.Length > 0)
{
result.CollisionMeshes = collisionMeshes;
}
results[i] = result;
}
Progress = (float)numProcessedVertices / totNumVertices;
}
NativeHandler.Instance.UnregisterCurrentThread();
return results;
}));
}