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MeshProcessingConnections.cs
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241 lines (207 loc) · 8.46 KB
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using System;
using System.Collections.Generic;
using System.Text;
using CGALDotNet.Polyhedra;
namespace CGALDotNet.Processing
{
/// <summary>
///
/// </summary>
/// <typeparam name="K"></typeparam>
public sealed class MeshProcessingConnections<K> : MeshProcessingConnections where K : CGALKernel, new()
{
/// <summary>
///
/// </summary>
public static readonly MeshProcessingConnections<K> Instance = new MeshProcessingConnections<K>();
/// <summary>
///
/// </summary>
public MeshProcessingConnections() : base(new K())
{
}
/// <summary>
///
/// </summary>
/// <param name="ptr"></param>
internal MeshProcessingConnections(IntPtr ptr) : base(new K(), ptr)
{
}
/// <summary>
///
/// </summary>
/// <returns></returns>
public override string ToString()
{
return string.Format("[MeshProcessingConnections<{0}>: ]", Kernel.Name);
}
/*
/// <summary>
/// Returns the number of unconnect components in the mesh.
/// </summary>
/// <param name="mesh">A valid mesh.</param>
/// <returns>Returns the number of unconnect components in the mesh.</returns>
public int UnconnectedComponents(Polyhedron3<K> mesh)
{
CheckIsValidException(mesh);
return Kernel.ConnectedComponents_PH(mesh.Ptr);
}
*/
/// <summary>
/// Returns the number of unconnect components in the mesh.
/// </summary>
/// <param name="mesh">A valid mesh.</param>
/// <returns>Returns the number of unconnect components in the mesh.</returns>
public int UnconnectedComponents(SurfaceMesh3<K> mesh)
{
CheckIsValidException(mesh);
return Kernel.ConnectedComponents_SM(mesh.Ptr);
}
/// <summary>
/// Returns a list of face indices that are part of the same component as the provided face index.
/// </summary>
/// <param name="mesh">A valid mesh.</param>
/// <param name="faceIndex">The faces index in the mesh.</param>
/// <param name="results">A list of face indices that are part of the same component as the provided face index.</param>
public void ConnectedFaces(Polyhedron3<K> mesh, int faceIndex, List<int> results)
{
CheckIsValidException(mesh);
int count = Kernel.ConnectedComponent_PH(Ptr, mesh.Ptr, faceIndex);
if (count == 0) return;
var indices = new int[count];
Kernel.GetConnectedComponentsFaceIndex_PH(Ptr, mesh.Ptr, indices, count);
results.AddRange(indices);
}
/// <summary>
/// Returns a list of face indices that are part of the same component as the provided face index.
/// </summary>
/// <param name="mesh">A valid mesh.</param>
/// <param name="faceIndex">The faces index in the mesh.</param>
/// <param name="results">A list of face indices that are part of the same component as the provided face index.</param>
public void ConnectedFaces(SurfaceMesh3<K> mesh, int faceIndex, List<int> results)
{
CheckIsValidException(mesh);
int count = Kernel.ConnectedComponent_SM(Ptr, mesh.Ptr, faceIndex);
if (count == 0) return;
var indices = new int[count];
Kernel.GetConnectedComponentsFaceIndex_SM(Ptr, mesh.Ptr, indices, count);
results.AddRange(indices);
}
/// <summary>
/// Split each component in the mesh into individual meshes.
/// </summary>
/// <param name="mesh">A valid mesh.</param>
/// <param name="results">The split meshes.</param>
public void SplitUnconnectedComponents(Polyhedron3<K> mesh, List<Polyhedron3<K>> results)
{
CheckIsValidException(mesh);
int count = Kernel.SplitConnectedComponents_PH(Ptr, mesh.Ptr);
if (count == 0) return;
var ptrs = new IntPtr[count];
Kernel.GetSplitConnectedComponents_PH(Ptr, ptrs, count);
for (int i = 0; i < count; i++)
results.Add( new Polyhedron3<K>(ptrs[i]));
}
/// <summary>
/// Split each component in the mesh into individual meshes.
/// </summary>
/// <param name="mesh">A valid mesh.</param>
/// <param name="results">The split meshes.</param>
public void SplitUnconnectedComponents(SurfaceMesh3<K> mesh, List<SurfaceMesh3<K>> results)
{
CheckIsValidException(mesh);
int count = Kernel.SplitConnectedComponents_SM(Ptr, mesh.Ptr);
if (count == 0) return;
var ptrs = new IntPtr[count];
Kernel.GetSplitConnectedComponents_SM(Ptr, ptrs, count);
for (int i = 0; i < count; i++)
results.Add(new SurfaceMesh3<K>(ptrs[i]));
}
/// <summary>
/// Removes connected components with less than a given number of faces.
/// </summary>
/// <param name="mesh">A valid mesh.</param>
/// <param name="threshold_value">The number of faces a component must have so that it is kept</param>
/// <returns>The number of components removed.</returns>
public int KeepLargeComponents(Polyhedron3<K> mesh, int threshold_value)
{
CheckIsValidException(mesh);
return Kernel.KeepLargeConnectedComponents_PH(mesh.Ptr, threshold_value);
}
/// <summary>
/// Removes connected components with less than a given number of faces.
/// </summary>
/// <param name="mesh">A valid mesh.</param>
/// <param name="threshold_value">The number of faces a component must have so that it is kept</param>
/// <returns>The number of components removed.</returns>
public int KeepLargeComponents(SurfaceMesh3<K> mesh, int threshold_value)
{
CheckIsValidException(mesh);
return Kernel.KeepLargeConnectedComponents_SM(mesh.Ptr, threshold_value);
}
/// <summary>
/// Removes the small connected components and all isolated vertices.
/// </summary>
/// <param name="mesh">A valid mesh.</param>
/// <param name="num_components_to_keep">Keep this number of the largest connected components.</param>
/// <returns>The number of components removed.</returns>
public int KeepLargestComponents(Polyhedron3<K> mesh, int num_components_to_keep)
{
CheckIsValidException(mesh);
return Kernel.KeepLargestConnectedComponents_PH(mesh.Ptr, num_components_to_keep);
}
/// <summary>
/// Removes the small connected components and all isolated vertices.
/// </summary>
/// <param name="mesh">A valid mesh.</param>
/// <param name="num_components_to_keep">Keep this number of the largest connected components.</param>
/// <returns>The number of components removed.</returns>
public int KeepLargestComponents(SurfaceMesh3<K> mesh, int num_components_to_keep)
{
CheckIsValidException(mesh);
return Kernel.KeepLargestConnectedComponents_SM(mesh.Ptr, num_components_to_keep);
}
}
/// <summary>
///
/// </summary>
public abstract class MeshProcessingConnections : PolyhedraAlgorithm
{
/// <summary>
///
/// </summary>
private MeshProcessingConnections()
{
}
/// <summary>
///
/// </summary>
/// <param name="kernel"></param>
internal MeshProcessingConnections(CGALKernel kernel)
{
Kernel = kernel.MeshProcessingConnectionsKernel;
Ptr = Kernel.Create();
}
/// <summary>
///
/// </summary>
/// <param name="kernel"></param>
/// <param name="ptr"></param>
internal MeshProcessingConnections(CGALKernel kernel, IntPtr ptr) : base(ptr)
{
Kernel = kernel.MeshProcessingConnectionsKernel;
Ptr = ptr;
}
/// <summary>
///
/// </summary>
internal MeshProcessingConnectionsKernel Kernel { get; private set; }
/// <summary>
/// Release any unmanaged resources.
/// </summary>
protected override void ReleasePtr()
{
Kernel.Release(Ptr);
}
}
}