public CSGNode(List <CSGPolygon> _polygons, CSGPlane _plane, CSGNode _frontNode, CSGNode _backNode)
{
m_polygons = _polygons;
m_plane = _plane;
m_frontNode = _frontNode;
m_backNode = _backNode;
}
// Return a new CSG solid representing space both this solid and in the
// solid `csg`. Neither this solid nor the solid `csg` are modified.
public static List <Mesh> Intersect(CSGNode _nodeAIn, CSGNode _nodeBIn, CSGMeshingSettings _meshSettings)
{
List <Mesh> resultantMeshes = new List <Mesh>();
CSGNode nodeA = _nodeAIn.Clone();
CSGNode nodeB = _nodeBIn.Clone();
nodeA.Invert();
nodeB.ClipTo(nodeA);
nodeB.Invert();
nodeA.ClipTo(nodeB);
nodeB.ClipTo(nodeA);
nodeA.Build(nodeB.AllPolygons());
nodeA.Invert();
CSGModel resultModel = new CSGModel(nodeA.AllPolygons());
if (resultModel.SubDivideMesh(_meshSettings))
{
for (int subMeshIter = 0; subMeshIter < resultModel.m_subModels.Count; subMeshIter++)
{
resultantMeshes.Add(resultModel.m_subModels[subMeshIter].ToMesh());
}
}
else
{
resultantMeshes.Add(resultModel.ToMesh());
}
return(resultantMeshes);
}
public static List <Mesh> Intersect(GameObject _objectA, GameObject _objectB, CSGMeshingSettings _meshSettings)
{
CSGModel modelA = new CSGModel(_objectA);
CSGModel modelB = new CSGModel(_objectB);
CSGNode nodeA = new CSGNode(modelA.ToPolygons());
CSGNode nodeB = new CSGNode(modelB.ToPolygons());
return(CSGNode.Intersect(nodeA, nodeB, _meshSettings));
}
// Build a BSP tree out of `polygons`. When called on an existing tree, the
// new polygons are filtered down to the bottom of the tree and become new
// nodes there. Each set of polygons is partitioned using the first polygon
// (no heuristic is used to pick a good split).
public void Build(List <CSGPolygon> _polygons, int _recursionCount = 0)
{
if (_recursionCount > C_MaxRecursions)
{
Debug.LogWarning("Hit RecursionCap");
return;
}
if (_polygons.Count < 1)
{
return;
}
if (m_plane == null || !m_plane.Valid())
{
m_plane = new CSGPlane();
m_plane.m_normal = _polygons[0].m_plane.m_normal;
m_plane.m_planeWidth = _polygons[0].m_plane.m_planeWidth;
}
if (m_polygons == null)
{
m_polygons = new List <CSGPolygon>();
}
List <CSGPolygon> frontPolygons = new List <CSGPolygon>();
List <CSGPolygon> backPolygons = new List <CSGPolygon>();
for (int i = 0; i < _polygons.Count; i++)
{
m_plane.SplitPolygon(_polygons[i], m_polygons, m_polygons, frontPolygons, backPolygons);
}
if (frontPolygons.Count > 0)
{
if (m_frontNode == null)
{
m_frontNode = new CSGNode();
}
m_frontNode.Build(frontPolygons, _recursionCount + 1);
}
if (backPolygons.Count > 0)
{
if (m_backNode == null)
{
m_backNode = new CSGNode();
}
m_backNode.Build(backPolygons, _recursionCount + 1);
}
}
public CSGNode DeepClone()
{
List <CSGPolygon> polygons = new List <CSGPolygon>();
for (int polygonIter = 0; polygonIter < m_polygons.Count; polygonIter++)
{
polygons.Add(m_polygons[polygonIter].DeepClone());
}
CSGNode clone = new CSGNode(m_polygons, m_plane.DeepClone(), m_frontNode, m_backNode);
return(clone);
}
public static List <Mesh> NVSubtract(GameObject _objectA, GameObject _objectB, CSGMeshingSettings _meshSettings)
{
CSGModel modelA = new CSGModel(_objectA);
CSGModel modelB = new CSGModel(_objectB);
CSGModel modelC = new CSGModel(_objectA);
CSGModel modelD = new CSGModel(_objectB);
CSGNode nodeA = new CSGNode(modelA.ToPolygons());
CSGNode nodeB = new CSGNode(modelB.ToPolygons());
CSGNode nodeC = new CSGNode(modelC.ToPolygons());
CSGNode nodeD = new CSGNode(modelD.ToPolygons());
return(CSGNode.NVSubtract(nodeA, nodeB, nodeC, nodeD, _meshSettings));
}
// Return a new CSG solid representing space in this solid but not in the
// solid `csg`. Neither this solid nor the solid `csg` are modified.
public static List <Mesh> HVSubtract(CSGNode _nodeAIn, CSGNode _nodeBIn, CSGMeshingSettings _meshSettings)
{
List <Mesh> resultantMeshes = new List <Mesh>();
CSGNode nodeA = _nodeAIn.Clone();
CSGNode nodeB = _nodeBIn.Clone();
nodeA.ClipTo(nodeB);
CSGModel resultantModels = new CSGModel(nodeA.AllPolygons());
resultantModels.SubDivideMesh(_meshSettings);
resultantMeshes.Add(resultantModels.ToMesh());
return(resultantMeshes);
}
// Return a new CSG solid representing space in either this solid or in the
// solid `csg`. Neither this solid nor the solid `csg` are modified.
public static List <Mesh> NVUnion(CSGNode _nodeAIn, CSGNode _nodeBIn, CSGMeshingSettings _meshSettings)
{
List <Mesh> resultantMeshes = new List <Mesh>();
CSGNode nodeA = _nodeAIn.Clone();
CSGNode nodeB = _nodeBIn.Clone();
nodeA.Build(nodeB.AllPolygons());
CSGModel resultantModel = new CSGModel(nodeA.AllPolygons());
resultantModel.SubDivideMesh(_meshSettings);
resultantMeshes.Add(resultantModel.ToMesh());
return(resultantMeshes);
}
public static List <Mesh> NVIntersect(GameObject _objectA, GameObject _objectB, CSGMeshingSettings _meshSettings)
{
Mesh mesh = _objectB.GetComponent <MeshFilter>().mesh;
GameObject planeRight = GameObject.Instantiate(_objectB);
planeRight.AddComponent <DestroyOnLateUpdate>();
GameObject planeLeft = GameObject.Instantiate(_objectB);
planeLeft.AddComponent <DestroyOnLateUpdate>();
GameObject planeUP = GameObject.Instantiate(_objectB);
planeUP.AddComponent <DestroyOnLateUpdate>();
GameObject planeBack = GameObject.Instantiate(_objectB);
planeBack.AddComponent <DestroyOnLateUpdate>();
GameObject planeFront = GameObject.Instantiate(_objectB);
planeFront.AddComponent <DestroyOnLateUpdate>();
planeRight.transform.position = _objectB.transform.position + new Vector3(mesh.bounds.max.x * planeRight.transform.localScale.x, 0.0f, 0.0f);
planeRight.transform.Rotate(new Vector3(0.0f, 0.0f, 90.0f));
planeLeft.transform.position = _objectB.transform.position + new Vector3(mesh.bounds.min.x * planeLeft.transform.localScale.x, 0.0f, 0.0f);
planeLeft.transform.Rotate(new Vector3(0.0f, 0.0f, -90.0f));
planeUP.transform.position = _objectB.transform.position;
planeUP.transform.Rotate(new Vector3(180.0f, 0.0f, 0.0f));
planeBack.transform.position = _objectB.transform.position + new Vector3(0.0f, 0.0f, mesh.bounds.max.z * planeRight.transform.localScale.z);
planeBack.transform.Rotate(new Vector3(-90.0f, 0.0f, 0.0f));
planeFront.transform.position = _objectB.transform.position + new Vector3(0.0f, 0.0f, mesh.bounds.min.z * planeRight.transform.localScale.z);
planeFront.transform.Rotate(new Vector3(90.0f, 0.0f, 0.0f));
CSGModel modelA = new CSGModel(_objectA);
CSGModel modelB = new CSGModel(planeRight);
CSGModel modelC = new CSGModel(planeLeft);
CSGModel modelD = new CSGModel(planeUP);
CSGModel modelE = new CSGModel(planeBack);
CSGModel modelF = new CSGModel(planeFront);
CSGNode nodeA = new CSGNode(modelA.ToPolygons());
CSGNode nodeB = new CSGNode(modelB.ToPolygons());
CSGNode nodeC = new CSGNode(modelC.ToPolygons());
CSGNode nodeD = new CSGNode(modelD.ToPolygons());
CSGNode nodeE = new CSGNode(modelE.ToPolygons());
CSGNode nodeF = new CSGNode(modelF.ToPolygons());
return(CSGNode.NVIntersect(nodeA, nodeB, nodeC, nodeD, nodeE, nodeF, _meshSettings));
}
// Remove all polygons in this BSP tree that are inside the other BSP tree
// `bsp`.
public void ClipTo(CSGNode _otherNode, int _recursionCount = 0)
{
if (_recursionCount > C_MaxRecursions)
{
Debug.LogWarning("Hit RecursionCap");
return;
}
m_polygons = _otherNode.ClipPolygons(m_polygons, 0);
if (m_frontNode != null)
{
m_frontNode.ClipTo(_otherNode, _recursionCount + 1);
}
if (m_backNode != null)
{
m_backNode.ClipTo(_otherNode, _recursionCount + 1);
}
}
// Return a new CSG solid representing space in this solid but not in the
// solid `csg`. Neither this solid nor the solid `csg` are modified.
public static List <Mesh> NVSubtract(CSGNode _nodeAIn, CSGNode _nodeBIn, CSGNode _nodeCIn, CSGNode _nodeDIn, CSGMeshingSettings _meshSettings)
{
List <Mesh> resultantMeshes = new List <Mesh>();
CSGNode nodeA = _nodeAIn.Clone();
CSGNode nodeB = _nodeBIn.Clone();
nodeA.ClipTo(nodeB);
CSGNode nodeC = _nodeCIn.Clone();
CSGNode nodeD = _nodeDIn.Clone();
nodeD.Invert();
nodeC.ClipTo(nodeD);
CSGModel resultantModelA = new CSGModel(nodeA.AllPolygons());
CSGModel resultantModelB = new CSGModel(nodeC.AllPolygons());
resultantMeshes.Add(resultantModelA.ToMesh());
resultantMeshes.Add(resultantModelB.ToMesh());
return(resultantMeshes);
}
// Convert solid space to empty space and empty space to solid space.
public void Invert()
{
for (int i = 0; i < m_polygons.Count; i++)
{
m_polygons[i].Flip();
}
m_plane.Flip();
if (m_frontNode != null)
{
m_frontNode.Invert();
}
if (m_backNode != null)
{
m_backNode.Invert();
}
CSGNode tempNode = m_frontNode;
m_frontNode = m_backNode;
m_backNode = tempNode;
}
// Return a new CSG solid representing space both this solid and in the
// solid `csg`. Neither this solid nor the solid `csg` are modified.
public static List <Mesh> NVIntersect(CSGNode _nodeAIn, CSGNode _nodeBIn, CSGNode _nodeCIn,
CSGNode _nodeDIn, CSGNode _nodeEIn, CSGNode _nodeFIn, CSGMeshingSettings _meshSettings)
{
List <Mesh> resultantMeshes = new List <Mesh>();
CSGNode nodeA = _nodeAIn.Clone();
CSGNode nodeB = _nodeBIn.Clone();
CSGNode nodeC = _nodeCIn.Clone();
CSGNode nodeD = _nodeDIn.Clone();
CSGNode nodeE = _nodeEIn.Clone();
CSGNode nodeF = _nodeFIn.Clone();
nodeA.ClipTo(nodeB);
nodeA.ClipTo(nodeC);
nodeA.ClipTo(nodeD);
nodeA.ClipTo(nodeE);
nodeA.ClipTo(nodeF);
CSGModel resultantModels = new CSGModel(nodeA.AllPolygons());
resultantModels.SubDivideMesh(_meshSettings);
resultantMeshes.Add(resultantModels.ToMesh());
return(resultantMeshes);
}
public CSGNode Clone()
{
CSGNode clone = new CSGNode(m_polygons, m_plane, m_frontNode, m_backNode);
return(clone);
}
public CSGNode()
{
m_frontNode = null;
m_backNode = null;
}
