/// <summary>
/// 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.
/// </summary>
/// <remarks>
/// A.subtract(B)
/// +-------+ +-------+
/// | | | |
/// | A | | |
/// | +--+----+ = | +--+
/// +----+--+ | +----+
/// | B |
/// | |
/// +-------+
/// </remarks>
/// <param name="csg"></param>
/// <returns></returns>
public CSG subtract(CSG csg)
{
Node a = new Node(this.polygons);
Node b = new Node(csg.polygons);
//Debug.Log(this.clone().polygons.Count + " -- " + csg.clone().polygons.Count);
//Debug.Log("CSG.subtract: Node a = " + a.polygons.Count + " polys, Node b = " + b.polygons.Count + " polys.");
a.invert();
a.clipTo(b);
b.clipTo(a);
b.invert();
b.clipTo(a);
b.invert();
a.build(b.allPolygons());
a.invert();
return(CSG.fromPolygons(a.allPolygons()));
}
/// <summary>
/// Return a new CSG solid representing space both this solid and in the
/// solid `csg`. Neither this solid nor the solid `csg` are modified.
/// </summary>
/// <remarks>
/// A.intersect(B)
///
/// +-------+
/// | |
/// | A |
/// | +--+----+ = +--+
/// +----+--+ | +--+
/// | B |
/// | |
/// +-------+
/// </remarks>
/// <param name="csg"></param>
/// <returns>CSG of the intersection</returns>
public CSG intersect(CSG csg)
{
Node a = new Node(this.polygons);
Node b = new Node(csg.polygons);
a.invert();
b.invert();
a.clipTo(b);
b.clipTo(a);
a.build(b.allPolygons());
return(CSG.fromPolygons(a.allPolygons()).inverse());
}
public CSG subtract(GameObject targetGo, GameObject brushGo)
{
Model.submeshIndices = new List <List <int> >();
Model csg_model_a = new Model(targetGo.gameObject, false, false);
Model csg_model_b = new Model(brushGo.gameObject, true, false);
Node a = new Node(csg_model_a.ToPolygons());
Node b = new Node(csg_model_b.ToPolygons());
//Debug.Log(this.clone().polygons.Count + " -- " + csg.clone().polygons.Count);
//Debug.Log("CSG.subtract: Node a = " + a.polygons.Count + " polys, Node b = " + b.polygons.Count + " polys.");
a.invert();
a.clipTo(b);
b.clipTo(a);
b.invert();
b.clipTo(a);
b.invert();
a.build(b.allPolygons());
a.invert();
return(CSG.fromPolygons(a.allPolygons()));
}
/// <summary>
/// Return a new CSG solid representing space both this solid and in the
/// solid `csg`. Neither this solid nor the solid `csg` are modified.
/// </summary>
/// <remarks>
/// A.intersect(B)
///
/// +-------+
/// | |
/// | A |
/// | +--+----+ = +--+
/// +----+--+ | +--+
/// | B |
/// | |
/// +-------+
/// </remarks>
/// <param name="csg"></param>
/// <returns>CSG of the intersection</returns>
public CSG intersect(CSG csg)
{
Node a = new Node(this.polygons);
Node b = new Node(csg.polygons);
a.invert();
//Debug.Log("Intersect 1 polygons: " + a.polygons.Count);
b.invert();
//Debug.Log("Intersect 2 polygons: " + b.polygons.Count);
a.clipTo(b);
//Debug.Log("Intersect 3 polygons: " + a.polygons.Count);
b.clipTo(a);
//Debug.Log("Intersect 5 polygons: " + b.polygons.Count);
a.build(b.allPolygons());
//Debug.Log("Intersect 6 polygons: " + a.polygons.Count);
//Debug.Log("Intersect 7 all polygons: " + a.allPolygons().Count);
//Debug.Log("Intersect 8 polygons finalll cgs: " + CSG.fromPolygons(a.allPolygons()).inverse().polygons.Count);
return(CSG.fromPolygons(a.allPolygons()).inverse());
}
/// <summary>
/// Return a new CSG solid representing space both this solid and in the
/// solid `csg`. Neither this solid nor the solid `csg` are modified.
/// </summary>
/// <remarks>
/// A.intersect(B)
///
/// +-------+
/// | |
/// | A |
/// | +--+----+ = +--+
/// +----+--+ | +--+
/// | B |
/// | |
/// +-------+
/// </remarks>
/// <param name="csg"></param>
/// <returns>CSG of the intersection</returns>
public CSG intersect(CSG csg)
{
Node a = new Node(this.polygons);
Node b = new Node(csg.polygons);
a.invert();
b.invert();
a.clipTo(b);
b.clipTo(a);
a.build(b.allPolygons());
return CSG.fromPolygons(a.allPolygons()).inverse();
}
/// <summary>
/// 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.
/// </summary>
/// <remarks>
/// A.subtract(B)
/// +-------+ +-------+
/// | | | |
/// | A | | |
/// | +--+----+ = | +--+
/// +----+--+ | +----+
/// | B |
/// | |
/// +-------+
/// </remarks>
/// <param name="csg"></param>
/// <returns></returns>
public CSG subtract(CSG csg)
{
Node a = new Node(this.polygons);
Node b = new Node(csg.polygons);
//Debug.Log(this.clone().polygons.Count + " -- " + csg.clone().polygons.Count);
//Debug.Log("CSG.subtract: Node a = " + a.polygons.Count + " polys, Node b = " + b.polygons.Count + " polys.");
a.invert();
a.clipTo(b);
b.clipTo(a);
b.invert();
b.clipTo(a);
b.invert();
a.build(b.allPolygons());
a.invert();
return CSG.fromPolygons(a.allPolygons());
}