public static kDOPTreeCompact ToCompact(kDOPCollisionTriangle[] oldTriangles, Vector3[] vertices)
{
var rootBound = new kDopUnCompressedNode
{
Min = new float[3],
Max = new float[3]
};
for (int i = 0; i < 3; i++)
{
rootBound.Max[i] = float.MaxValue;
rootBound.Min[i] = -float.MaxValue;
}
if (oldTriangles.IsEmpty())
{
return(new kDOPTreeCompact
{
RootBound = rootBound,
Nodes = new kDOPCompact[0],
Triangles = new kDOPCollisionTriangle[0]
});
}
var buildTriangles = new kDopBuildTriangle[oldTriangles.Length];
for (int i = 0; i < oldTriangles.Length; i++)
{
kDOPCollisionTriangle oldTri = oldTriangles[i];
buildTriangles[i] = new kDopBuildTriangle(oldTri, vertices[oldTri.Vertex1], vertices[oldTri.Vertex2], vertices[oldTri.Vertex3]);
}
int numNodes = 0;
if (buildTriangles.Length > 5)
{
numNodes = 1;
while ((buildTriangles.Length + numNodes - 1) / numNodes > 10)
{
numNodes *= 2;
}
numNodes = 2 * numNodes;
}
var nodes = new kDopCompressedNode[numNodes];
for (int i = 0; i < numNodes; i++)
{
nodes[i].Min = new byte[3];
nodes[i].Max = new byte[3];
for (int j = 0; j < 3; j++)
{
nodes[i].Min[j] = 0;
nodes[i].Max[j] = 0;
}
}
Compact(buildTriangles.Length, buildTriangles, numNodes, nodes, ref rootBound);
return(new kDOPTreeCompact
{
RootBound = rootBound,
Nodes = nodes.Select(node => (kDOPCompact)node).ToArray(),
Triangles = buildTriangles.Select(tri => (kDOPCollisionTriangle)tri).ToArray()
});
}
public static StaticMesh ConvertToME3StaticMesh(this SkeletalMesh skeletalMesh)
{
StaticLODModel lodModel = skeletalMesh.LODModels[0];
uint numVertices = lodModel.NumVertices;
var stm = new StaticMesh
{
Bounds = skeletalMesh.Bounds,
BodySetup = new UIndex(0),
LODModels = new[] { new StaticMeshRenderData
{
IndexBuffer = lodModel.IndexBuffer.TypedClone(),
NumVertices = numVertices,
Edges = new MeshEdge[0],
RawTriangles = new StaticMeshTriangle[0],
ColorVertexBuffer = new ColorVertexBuffer(),
ShadowTriangleDoubleSided = new byte[0],
WireframeIndexBuffer = new ushort[0],
ShadowExtrusionVertexBuffer = new ExtrusionVertexBuffer
{
Stride = 4,
VertexData = new float[0]
},
PositionVertexBuffer = new PositionVertexBuffer
{
NumVertices = numVertices,
Stride = 12,
VertexData = new Vector3[numVertices]
},
VertexBuffer = new StaticMeshVertexBuffer
{
bUseFullPrecisionUVs = false,
NumTexCoords = 1,
NumVertices = numVertices,
VertexData = new StaticMeshVertexBuffer.StaticMeshFullVertex[numVertices]
},
Elements = lodModel.Sections.Select(sec =>
{
var indices = lodModel.IndexBuffer.Skip((int)sec.BaseIndex).Take(sec.NumTriangles * 3).ToList();
return(new StaticMeshElement
{
bEnableShadowCasting = true,
EnableCollision = true,
OldEnableCollision = true,
FirstIndex = sec.BaseIndex,
NumTriangles = (uint)sec.NumTriangles,
MaterialIndex = sec.MaterialIndex,
Material = skeletalMesh.Materials[sec.MaterialIndex],
Fragments = new FragmentRange[0],
MinVertexIndex = indices.Min(),
MaxVertexIndex = indices.Max()
});
}).ToArray()
} },
InternalVersion = 18,
LightingGuid = Guid.NewGuid()
};
Vector3[] posVertData = stm.LODModels[0].PositionVertexBuffer.VertexData;
StaticMeshVertexBuffer.StaticMeshFullVertex[] stmVertData = stm.LODModels[0].VertexBuffer.VertexData;
if (lodModel.ME1VertexBufferGPUSkin != null)
{
for (int i = 0; i < lodModel.ME1VertexBufferGPUSkin.Length; i++)
{
SoftSkinVertex vert = lodModel.ME1VertexBufferGPUSkin[i];
posVertData[i] = vert.Position;
stmVertData[i] = new StaticMeshVertexBuffer.StaticMeshFullVertex
{
HalfPrecisionUVs = new Vector2DHalf[] { vert.UV },
TangentX = vert.TangentX,
TangentZ = vert.TangentZ
};
}
}
else
{
for (int i = 0; i < lodModel.VertexBufferGPUSkin.VertexData.Length; i++)
{
GPUSkinVertex vert = lodModel.VertexBufferGPUSkin.VertexData[i];
posVertData[i] = vert.Position;
stmVertData[i] = new StaticMeshVertexBuffer.StaticMeshFullVertex
{
HalfPrecisionUVs = new[] { vert.UV },
TangentX = vert.TangentX,
TangentZ = vert.TangentZ
};
}
}
var tris = new kDOPCollisionTriangle[lodModel.IndexBuffer.Length / 3];
for (int i = 0, elIdx = 0, triCount = 0; i < lodModel.IndexBuffer.Length; i += 3, ++triCount)
{
if (triCount > lodModel.Sections[elIdx].NumTriangles)
{
triCount = 0;
++elIdx;
}
tris[i / 3] = new kDOPCollisionTriangle(lodModel.IndexBuffer[i], lodModel.IndexBuffer[i + 1], lodModel.IndexBuffer[i + 2],
lodModel.Sections[elIdx].MaterialIndex);
}
stm.kDOPTreeME3UDK = KDOPTreeBuilder.ToCompact(tris, stm.LODModels[0].PositionVertexBuffer.VertexData);
return(stm);
}
public kDopBuildTriangle(kDOPCollisionTriangle tri, Vector3 v0, Vector3 v1, Vector3 v2)
: this(tri.Vertex1, tri.Vertex2, tri.Vertex3, tri.MaterialIndex, v0, v1, v2)
{
}
public static kDOPTreeCompact ToCompact(kDOPCollisionTriangle[] oldTriangles, Vector3[] vertices)
{
var rootBound = new kDOP
{
Min = new float[3],
Max = new float[3]
};
for (int i = 0; i < 3; i++)
{
rootBound.Max[i] = float.MaxValue;
rootBound.Min[i] = -float.MaxValue;
}
if (oldTriangles.IsEmpty())
{
return(new kDOPTreeCompact
{
RootBound = rootBound,
Nodes = new kDOPCompact[0],
Triangles = new kDOPCollisionTriangle[0]
});
}
var buildTriangles = new kDopBuildTriangle[oldTriangles.Length];
for (int i = 0; i < oldTriangles.Length; i++)
{
kDOPCollisionTriangle oldTri = oldTriangles[i];
buildTriangles[i] = new kDopBuildTriangle(oldTri, vertices[oldTri.Vertex1], vertices[oldTri.Vertex2], vertices[oldTri.Vertex3]);
}
int numNodes = 0;
if (buildTriangles.Length > 5)
{
numNodes = 1;
while ((buildTriangles.Length + numNodes - 1) / numNodes > 10)
{
numNodes *= 2;
}
numNodes = 2 * numNodes;
}
var nodes = new kDOPCompact[numNodes];
for (int i = 0; i < numNodes; i++)
{
nodes[i] = new kDOPCompact();
for (int j = 0; j < 3; j++)
{
nodes[i].Min[j] = 0;
nodes[i].Max[j] = 0;
}
}
rootBound.AddTriangles(buildTriangles, 0, buildTriangles.Length);
if (numNodes > 1 && buildTriangles.Length > 1)
{
nodes[0].SplitTriangleList(0, 0, buildTriangles.Length, buildTriangles, rootBound, nodes);
}
return(new kDOPTreeCompact
{
RootBound = rootBound,
Nodes = nodes,
Triangles = buildTriangles.Select(tri => (kDOPCollisionTriangle)tri).ToArray()
});
}
