public static void Split(TriMesh mesh, EdgeContext ctx)
{
TriMesh.Vertex left = null;
TriMesh.Vertex top = null;
TriMesh.Vertex bottom = null;
foreach (var v in mesh.Vertices)
{
if (v.Index == ctx.Left)
{
left = v;
}
else if (v.Index == ctx.Top)
{
top = v;
}
else if (v.Index == ctx.Bottom)
{
bottom = v;
}
}
TriMesh.Vertex right = TriMeshModify.VertexSplit(left, top, bottom, ctx.LeftPos, ctx.RightPos);
TriMesh.HalfEdge hf = left.FindHalfedgeTo(right);
right.Index = ctx.Right;
hf.Next.ToVertex.Index = ctx.Top;
hf.Opposite.Next.ToVertex.Index = ctx.Bottom;
}
protected override TriMesh.Vertex Merge(MergeArgs args)
{
EdgeContext ctx = TriMeshModify.Merge(args.Target, args.Pos);
this.Logs.Add(ctx);
return(ctx.Left);
}
public static void Split(TriMesh mesh, EdgeContext ctx)
{
TriMesh.Vertex left = null;
TriMesh.Vertex top = null;
TriMesh.Vertex bottom = null;
foreach (var v in mesh.Vertices)
{
if (v.Index == ctx.Left)
{
left = v;
}
else if (v.Index == ctx.Top)
{
top = v;
}
else if (v.Index == ctx.Bottom)
{
bottom = v;
}
}
TriMesh.Vertex right = TriMeshModify.VertexSplit(left, top, bottom, ctx.LeftPos, ctx.RightPos);
TriMesh.HalfEdge hf = left.FindHalfedgeTo(right);
right.Index = ctx.Right;
hf.Next.ToVertex.Index = ctx.Top;
hf.Opposite.Next.ToVertex.Index = ctx.Bottom;
}
public bool Forward()
{
if (this.index < this.method.Logs.Count)
{
EdgeContext ctx = this.method.Logs[this.index];
TriMesh.Vertex left = null;
TriMesh.Vertex right = null;
foreach (var v in this.Mesh.Vertices)
{
if (v.Index == ctx.Left)
{
left = v;
}
else if (v.Index == ctx.Right)
{
right = v;
}
}
TriMesh.Edge edge = left.FindEdgeTo(right);
MergeEdge.Merge(edge, ctx.MidPos);
index++;
return(true);
}
else
{
int r = this.method.Run(this.Mesh.Faces.Count - 1);
index += r;
return(false);
}
}
public void Split(EdgeContext ctx)
{
TriMesh.HalfEdge[] hfs = this.FindGroup(ctx.Left, ctx.Top, ctx.Buttom);
TriMesh mesh = (TriMesh)ctx.Left.Mesh;
ctx.Left.Traits.Position = ctx.LeftPos;
ctx.Left.HalfEdge = hfs[0];
ctx.Right.HalfEdge = hfs[1];
mesh.Add(ctx.Right);
for (int i = 0; i < hfs.Length - 1; i++)
{
hfs[i].Opposite.ToVertex = ctx.Right;
}
TriMesh.HalfEdge[] triangle1 = this.AddInnerTriangle(mesh, ctx.AboveFace, ctx.Left, ctx.Right, ctx.Top);
this.InsertEdge(mesh, ctx.TopLeftEdge, triangle1[1], hfs[0]);
TriMesh.HalfEdge[] triangle2 = this.AddInnerTriangle(mesh, ctx.UnderFace, ctx.Right, ctx.Left, ctx.Buttom);
this.InsertEdge(mesh, ctx.ButtomRightEdge, triangle2[1], hfs[hfs.Length - 1]);
ctx.MidEdge.HalfEdge0 = triangle2[0];
triangle1[0].Edge = ctx.MidEdge;
triangle2[0].Edge = ctx.MidEdge;
triangle1[0].Opposite = triangle2[0];
triangle2[0].Opposite = triangle1[0];
mesh.Add(ctx.MidEdge);
}
public bool Backward()
{
if (this.index == 0)
{
return(false);
}
else
{
index--;
EdgeContext ctx = this.method.Logs[this.index];
SplitVertex.Split(this.Mesh, ctx);
TriMesh.Vertex left = null;
TriMesh.Vertex right = null;
foreach (var v in this.Mesh.Vertices)
{
if (v.Index == ctx.Left)
{
left = v;
}
else if (v.Index == ctx.Right)
{
right = v;
}
}
TriMesh.HalfEdge hf = left.FindHalfedgeTo(right);
hf.Face.Traits.Normal = TriMeshUtil.ComputeNormalFace(hf.Face);
hf.Opposite.Face.Traits.Normal = TriMeshUtil.ComputeNormalFace(hf.Opposite.Face);
left.Traits.Normal = TriMeshUtil.ComputeNormalAreaWeight(left);
right.Traits.Normal = TriMeshUtil.ComputeNormalAreaWeight(right);
return(true);
}
}
public void Split(EdgeContext ctx)
{
TriMesh.HalfEdge[] hfs = this.FindGroup(ctx.Left, ctx.Top, ctx.Buttom);
TriMesh mesh = (TriMesh)ctx.Left.Mesh;
ctx.Left.Traits.Position = ctx.LeftPos;
ctx.Left.HalfEdge = hfs[0];
ctx.Right.HalfEdge = hfs[1];
mesh.Add(ctx.Right);
for (int i = 0; i < hfs.Length - 1; i++)
{
hfs[i].Opposite.ToVertex = ctx.Right;
}
TriMesh.HalfEdge[] triangle1 = this.AddInnerTriangle(mesh, ctx.AboveFace, ctx.Left, ctx.Right, ctx.Top);
this.InsertEdge(mesh, ctx.TopLeftEdge, triangle1[1], hfs[0]);
TriMesh.HalfEdge[] triangle2 = this.AddInnerTriangle(mesh, ctx.UnderFace, ctx.Right, ctx.Left, ctx.Buttom);
this.InsertEdge(mesh, ctx.ButtomRightEdge, triangle2[1], hfs[hfs.Length - 1]);
ctx.MidEdge.HalfEdge0 = triangle2[0];
triangle1[0].Edge = ctx.MidEdge;
triangle2[0].Edge = ctx.MidEdge;
triangle1[0].Opposite = triangle2[0];
triangle2[0].Opposite = triangle1[0];
mesh.Add(ctx.MidEdge);
}
public void Show()
{
if (this.index > 0)
{
EdgeContext ctx = this.method.Logs[index - 1];
ctx.Top.Traits.selectedFlag = 1;
ctx.TopLeftEdge.Traits.selectedFlag = 1;
ctx.Left.Traits.selectedFlag = 1;
ctx.MidEdge.Traits.selectedFlag = 1;
ctx.Right.Traits.selectedFlag = 1;
ctx.ButtomRightEdge.Traits.selectedFlag = 1;
ctx.Buttom.Traits.selectedFlag = 1;
}
if (this.index < this.method.Logs.Count)
{
EdgeContext ctx = this.method.Logs[index];
ctx.Top.Traits.selectedFlag = 1;
ctx.TopLeftEdge.Traits.selectedFlag = 1;
ctx.Left.Traits.selectedFlag = 1;
ctx.MidEdge.Traits.selectedFlag = 1;
ctx.Right.Traits.selectedFlag = 1;
ctx.ButtomRightEdge.Traits.selectedFlag = 1;
ctx.Buttom.Traits.selectedFlag = 1;
}
}
public bool Backward()
{
if (this.index == 0)
{
return(false);
}
else
{
index--;
EdgeContext ctx = this.method.Logs[this.index];
new SplitVertex().Split(ctx);
return(true);
}
}
public bool Forward()
{
if (this.index < this.method.Logs.Count)
{
EdgeContext ctx = this.method.Logs[this.index];
TriMeshModify.Merge(ctx.MidEdge, ctx.MidPos);
index++;
return(true);
}
else
{
int r = this.method.Run(this.Mesh.Faces.Count - 1);
index += r;
return(false);
}
}
protected override HalfEdgeMesh.Vertex Merge(MergeSimplicationBase <HalfEdgeMesh.Edge> .MergeArgs args)
{
EdgeContext ctx = MergeEdge.Merge(args.Target, args.Pos);
this.Logs.Add(ctx);
TriMesh.Vertex left = null;
foreach (var v in this.Mesh.Vertices)
{
if (v.Index == ctx.Left)
{
left = v;
}
}
return(left);
}
public static EdgeContext Merge(TriMesh.Edge edge, Vector3D position)
{
TriMesh mesh = (TriMesh)edge.Mesh;
EdgeContext context = new EdgeContext()
{
LeftPos = edge.Vertex0.Traits.Position,
MidPos = position,
RightPos = edge.Vertex1.Traits.Position,
Left = edge.Vertex0.Index,
Right = edge.Vertex1.Index,
Top = edge.HalfEdge1.Next.ToVertex.Index,
Bottom = edge.HalfEdge0.Next.ToVertex.Index,
};
TriMeshModify.MergeEdge(edge);
return(context);
}
public static EdgeContext Merge(TriMesh.Edge edge, Vector3D position)
{
TriMesh mesh = (TriMesh)edge.Mesh;
EdgeContext context = new EdgeContext()
{
LeftPos = edge.Vertex0.Traits.Position,
MidPos = position,
RightPos = edge.Vertex1.Traits.Position,
Left = edge.Vertex0.Index,
Right = edge.Vertex1.Index,
Top = edge.HalfEdge1.Next.ToVertex.Index,
Bottom = edge.HalfEdge0.Next.ToVertex.Index,
};
TriMeshModify.MergeEdge(edge);
return context;
}
