/// <summary>
/// isDamagedEdge
/// judge if an edge is damaged
/// </summary>
/// <param name="edge">the edge to be judged</param>
public bool isDamagedEdge(Edge3D edge)
{
foreach (var damage in damages)
{
if (damage.edge.Equals(edge))
{
return(true);
}
}
return(false);
}
/// <summary>
/// tryAddEdge
/// find the edge in current edges.
/// if exists, return its index
/// if not, insert it and return its new index
/// </summary>
/// <param name="edge">the edge to insert or find</param>
public int tryAddEdge(Edge3D edge)
{
var index = edges.FindIndex(edg => edg == edge);
if (index == -1)
{
edges.Add(edge);
return(edges.Count - 1);
}
else
{
return(index);
}
}
public int tryAddEdge(int from, int to)
{
var edge = new Edge2D(from, to);
if (edges.Contains(edge))
{
return(edges.FindIndex(edg => edg == edge));
}
else
{
edges.Add(edge);
return(edges.Count - 1);
}
}
public static List <List <int> > floodSplit3D(ref VolumeticMesh3D mesh)
{
var unassignedNodes = new List <int>();
for (int i = 0; i < mesh.nodes.Count; ++i)
{
unassignedNodes.Add(i);
}
var fragmentCount = 0;
var nodes = new List <List <int> >();
while (unassignedNodes.Count != 0)
{
var newFragmentId = fragmentCount;
fragmentCount++;
List <int> queue = new List <int>();
queue.Add(unassignedNodes[0]);
unassignedNodes.RemoveAt(0);
int targetNode = queue[0];
while (queue.Count != 0)
{
targetNode = queue[0];
if (nodes.Count <= newFragmentId)
{
nodes.Add(new List <int>());
}
nodes[newFragmentId].Add(targetNode);
foreach (var ne in mesh.getNeighborNodes(targetNode))
{
if (!queue.Contains(ne) && unassignedNodes.Contains(ne))
{
Edge edge = new Edge(ne, targetNode);
if (!mesh.isDamagedEdge(edge))
{
queue.Add(ne);
unassignedNodes.Remove(ne);
}
}
}
queue.RemoveAt(0);
}
}
return(nodes);
}
public static List <List <int> > floodSplit2D(ref VolumeticMesh2D mesh)
{
var unassignedNodes = new List <int>();
for (int i = 0; i < mesh.nodes.Count; ++i)
{
unassignedNodes.Add(i);
}
var fragmentCount = 0;
var nodes = new List <List <int> >();
int ccc0 = 0;
while (unassignedNodes.Count != 0)
{
if (ccc0++ > 100)
{
Debug.Log("Too many loops");
break;
}
Debug.Log(unassignedNodes.Count);
var newFragmentId = fragmentCount;
fragmentCount++;
List <int> queue = new List <int>();
queue.Add(unassignedNodes[0]);
unassignedNodes.RemoveAt(0);
int targetNode = queue[0];
int ccc1 = 0;
while (queue.Count != 0)
{
if (ccc1++ > 100)
{
Debug.Log("Too many loops");
break;
}
if (nodes.Count <= newFragmentId)
{
nodes.Add(new List <int>());
}
nodes[newFragmentId].Add(targetNode);
int ccc2 = 0;
foreach (var ne in mesh.getNeighbors(targetNode))
{
if (ccc2++ > 100)
{
Debug.Log("Too many loops");
break;
}
if (!queue.Contains(ne) && unassignedNodes.Contains(ne))
{
Edge edge = new Edge(ne, targetNode);
if (!mesh.isDamagedEdge(edge))
{
queue.Add(ne);
unassignedNodes.Remove(ne);
}
}
}
queue.RemoveAt(0);
}
}
return(nodes);
}
/// <summary>
/// tryAddNode
/// find the node in current nodes.
/// if exists, return its index
/// if not, insert it and return its new index
/// </summary>
/// <param name="from">one tail of the edge. choose which tail is irrelevant.</param>
/// <param name="to">one tail of the edge. choose which tail is irrelevant.</param>
public int tryAddEdge(int from, int to)
{
var edge = new Edge3D(from, to);
return(tryAddEdge(edge));
}
public Damage3D(Edge3D Edge, double CutPosition)
{
this.edge = Edge;
this.cutPosition = CutPosition;
}
public VolumeticMesh2D generateMesh()
{
var mesh = new VolumeticMesh2D();
Mesh rawMesh = GetComponent <MeshFilter>().mesh;
var vertices = rawMesh.vertices;
foreach (var vertex in vertices)
{
mesh.nodes.Add(new Vector2(vertex.x, vertex.y));
}
var calculator = new GK.DelaunayCalculator();
var result = calculator.CalculateTriangulation(mesh.nodes);
var triangles = result.Triangles;
for (int i = 0; i < triangles.Count; i += 3)
{
var edgeA = new Edge2D(triangles[i], triangles[i + 2]);
var edgeB = new Edge2D(triangles[i + 2], triangles[i + 1]);
var edgeC = new Edge2D(triangles[i + 1], triangles[i]);
int edgeIndexA, edgeIndexB, edgeIndexC;
if (!mesh.edges.Contains(edgeA))
{
mesh.edges.Add(edgeA);
edgeIndexA = mesh.edges.Count - 1;
}
else
{
edgeIndexA = mesh.edges.FindIndex(edge => edge == edgeA);
}
if (!mesh.edges.Contains(edgeB))
{
mesh.edges.Add(edgeB);
edgeIndexB = mesh.edges.Count - 1;
}
else
{
edgeIndexB = mesh.edges.FindIndex(edge => edge == edgeB);
}
if (!mesh.edges.Contains(edgeC))
{
mesh.edges.Add(edgeC);
edgeIndexC = mesh.edges.Count - 1;
}
else
{
edgeIndexC = mesh.edges.FindIndex(edge => edge == edgeC);
}
mesh.nodeJointIndexes.Add(new TriangleNodes2D(triangles[i], triangles[i + 2], triangles[i + 1]));
mesh.edgeJointIndexes.Add(new TriangleEdges2D(edgeIndexA, edgeIndexB, edgeIndexC));
}
return(mesh);
}