public Mesh CreateConvex()
{
Mesh m = new Mesh();
m.Shape = this;
Convexes.Add(m);
return m;
}
public Mesh Split2d(Point3D raystart, Vector3D raydir, ESplitMode split_mode, ref Mesh target_mesh)
{
Face[] tosplit = Faces.ToArray();
foreach (Face f in tosplit)
{
Face inside_face,outside_face;
f.SplitByRay(raystart, raydir, out inside_face, out outside_face);
if (split_mode == ESplitMode.KEEP_INSIDE)
{
if(outside_face != null)
TransferFaceTo(outside_face, target_mesh);
}
else if (split_mode == ESplitMode.KEEP_OUTSIDE)
{
if(inside_face != null)
TransferFaceTo(inside_face, target_mesh);
}
}
return this;
}
public void Clip2d(Mesh clip_mesh, List<Mesh> outside)
{
Mesh new_mesh = Shape.CreateConvex();
foreach (Edge clip_edge in clip_mesh.Edges)
{
Point3D raystart = clip_edge.Vertices[0].Pos;
Vector3D raydir = clip_edge.Direction;
Split2d(raystart, raydir, ESplitMode.KEEP_INSIDE, new_mesh);
if (new_mesh.Faces.Count != 0)
{
}
}
}
public void TransferFaceTo(Face f, Mesh mesh)
{
if (mesh.Shape != Shape)
throw new System.ApplicationException("Can not transfer faces between shapes");
//transfer the face
Faces.Remove(f);
mesh.Faces.Add(f);
f.OwnerMesh = mesh;
//go over each edge in the face and copy it over
for(int edgeidx = 0; edgeidx < f.Edges.Count; edgeidx++)
{
//get the edge and remove the face from it
Edge e = f.Edges[edgeidx];
e.OwnerFaces.Remove(f);
//create a new edge and replace it
Edge newedge = mesh.CreateEdge();
newedge.OwnerFaces.Add(f);
f.Edges[edgeidx] = newedge;
//set the 2 vertex references
newedge.SetVertex(0, e.Vertices[0]);
newedge.SetVertex(1, e.Vertices[1]);
}
}
public Node SplitByRay(double raystart_x, double raystart_y, double raystart_z, double raydir_x, double raydir_y, double raydir_z, Mesh.ESplitMode sm, params Node[] nodes)
{
return new SplitByRayNode(new Point3D(raystart_x,raystart_y,raystart_z), new Vector3D(raydir_x,raydir_y,raydir_z), sm, nodes);
}
public bool ContainsMesh(Mesh m)
{
if (Convexes != null && Convexes.Contains(m))
return true;
if (PolyMesh == m)
return true;
if (TriMesh == m)
return true;
return false;
}
public Shape Split2d(Point3D raystart, Vector3D raydir, Mesh.ESplitMode sm)
{
Mesh[] convexes = Convexes.ToArray();
foreach (Mesh m in convexes)
{
Mesh newmesh = null;
if (sm != Mesh.ESplitMode.KEEP_BOTH)
newmesh = CreateConvex();
m.Split2d(raystart, raydir, sm, newmesh);
}
Convexes = convexes.ToList();
return this;
}
public SplitByRayNode(Point3D raystart, Vector3D raydir, Mesh.ESplitMode sm, params Node[] nodes)
{
SetChildren(nodes);
RayStart = raystart;
RayDir = raydir;
SplitMode = sm;
}