public void EnterFoldingMode(Vertex pickedVertex, Face nearestFace)
{
this.cloverController = CloverController.GetInstance();
// 寻找同group面中拥有pickedVertex的面中最下面的那个面作为baseFace
this.group = cloverController.FaceGroupLookupTable.GetGroup(nearestFace);
if (this.group == null)
{
System.Windows.MessageBox.Show("找不到Groups");
return;
}
this.pickedVertex = pickedVertex;
this.baseFace = nearestFace;
foreach (Face face in group.GetFaceList())
{
if (CloverTreeHelper.IsVertexInFace(pickedVertex, face) && face.Layer < baseFace.Layer)
baseFace = face;
}
// 将同Group的面分为在base面之上（含baseFace）和base面之下的两组
foreach (Face face in group.GetFaceList())
{
if (face.Layer >= baseFace.Layer)
this.facesAboveBase.Add(face);
else
this.facesBelowBase.Add(face);
}
// 保存pickedVertex的原始位置
originPoint = new Point3D(pickedVertex.X, pickedVertex.Y, pickedVertex.Z);
}
public List<Face> EnterTuckingMode(Vertex pickedVertex, Face nearestFace)
{
this.cloverController = CloverController.GetInstance();
//cloverController.ShadowSystem.CheckUndoTree();
// 寻找同group面中拥有pickedVertex的面中最下面的那个面作为floorFace,最上面的那个面作为ceilingFace
this.group = cloverController.FaceGroupLookupTable.GetGroup(nearestFace);
this.pickedVertex = pickedVertex;
this.floorFace = this.ceilingFace = nearestFace;
// 是正向还是反向
Vector3D currNormal = group.Normal * cloverController.RenderController.Entity.Transform.Value;
Double judge = Vector3D.DotProduct(currNormal, new Vector3D(0, 0, 1));
isPositive = judge < 0 ? false : true;
if (isPositive)
{
foreach (Face face in group.GetFaceList())
{
if (CloverTreeHelper.IsVertexInFace(pickedVertex, face) && face.Layer < floorFace.Layer)
floorFace = face;
if (CloverTreeHelper.IsVertexInFace(pickedVertex, face) && face.Layer > ceilingFace.Layer)
ceilingFace = face;
}
// 将同Group的面分为在floor和ceiling之间和在floor和ceiling之外两组
foreach (Face face in group.GetFaceList())
{
if (face.Layer >= floorFace.Layer && face.Layer <= ceilingFace.Layer)
this.facesInHouse.Add(face);
else
this.facesNotInHouse.Add(face);
}
}
else
{
foreach (Face face in group.GetFaceList())
{
if (CloverTreeHelper.IsVertexInFace(pickedVertex, face) && face.Layer > floorFace.Layer)
floorFace = face;
if (CloverTreeHelper.IsVertexInFace(pickedVertex, face) && face.Layer < ceilingFace.Layer)
ceilingFace = face;
}
// 将同Group的面分为在floor和ceiling之间和在floor和ceiling之外两组
foreach (Face face in group.GetFaceList())
{
if (face.Layer <= floorFace.Layer && face.Layer >= ceilingFace.Layer)
this.facesInHouse.Add(face);
else
this.facesNotInHouse.Add(face);
}
}
// 保存pickedVertex的原始位置
originPoint = new Point3D(pickedVertex.X, pickedVertex.Y, pickedVertex.Z);
return facesInHouse;
}
public List<Face> EnterFoldingMode(Vertex pickedVertex, Face nearestFace)
{
this.cloverController = CloverController.GetInstance();
//cloverController.ShadowSystem.CheckUndoTree();
// 寻找同group面中拥有pickedVertex的面中最下面的那个面作为baseFace
this.group = cloverController.FaceGroupLookupTable.GetGroup(nearestFace);
this.pickedVertex = pickedVertex;
this.baseFace = nearestFace;
// 是正向还是反向
Vector3D currNormal = group.Normal * cloverController.RenderController.Entity.Transform.Value;
Double judge = Vector3D.DotProduct(currNormal, new Vector3D(0, 0, 1));
isPositive = judge < 0 ? false : true;
if (isPositive)
{
foreach (Face face in group.GetFaceList())
{
if (CloverTreeHelper.IsVertexInFace(pickedVertex, face) && face.Layer < baseFace.Layer)
baseFace = face;
}
// 将同Group的面分为在base面之上（含baseFace）和base面之下的两组
foreach (Face face in group.GetFaceList())
{
if (face.Layer >= baseFace.Layer)
this.facesAboveBase.Add(face);
else
this.facesBelowBase.Add(face);
}
}
else
{
foreach (Face face in group.GetFaceList())
{
if (CloverTreeHelper.IsVertexInFace(pickedVertex, face) && face.Layer > baseFace.Layer)
baseFace = face;
}
// 将同Group的面分为在base面之上（含baseFace）和base面之下的两组
foreach (Face face in group.GetFaceList())
{
if (face.Layer <= baseFace.Layer)
this.facesAboveBase.Add(face);
else
this.facesBelowBase.Add(face);
}
}
// 保存pickedVertex的原始位置
originPoint = new Point3D(pickedVertex.X, pickedVertex.Y, pickedVertex.Z);
return facesAboveBase;
}
/// <summary>
/// 退出Blending模式
/// </summary>
public void ExitBlendingMode()
{
pickedVertex = null;
nearestFace = null;
foldLine = null;
group = null;
beBlendedFaces = null;
faceContainVertex = null;
checkMask = 0;
// 更新组
CloverController.GetInstance().FaceGroupLookupTable.UpdateTableAfterBending(11);
// 反重叠
RenderController.GetInstance().AntiOverlap();
}
/// <summary>
/// 判断一个面是否在一个组中
/// </summary>
/// <param name="face"></param>
/// <param name="group"></param>
/// <returns></returns>
public static Boolean IsFaceInGroup(Face face, FaceGroup group)
{
// 等待杨旭瑜写完group，。。。
// todo
return false;
}
/// <summary>
/// 返回一个组的基面，用以计算其他面的渲染偏差量
/// </summary>
/// <param name="group"></param>
public static Face FindBaseFace(FaceGroup group)
{
//todo
return null;
}
/// <summary>
/// 寻找所有要折叠（旋转）的面，放在beBlendedFaces中。
/// </summary>
void FindBeBlendedFaces()
{
// 寻找所有与nearestFace同一group的Face
group = CloverController.GetInstance().FaceGroupLookupTable.GetGroup(nearestFace);
checkMask += 4;
if (group == null)
System.Windows.MessageBox.Show("这怎么可能？一个face居然不在group中！--Blending");
// 找到所有拥有pickedVertex的Face
faceContainVertex = new List<Face>();
checkMask += 8;
foreach (Face face in group.GetFaceList())
{
if (CloverTreeHelper.IsVertexInFace(pickedVertex, face))
faceContainVertex.Add(face);
}
// 找到所有拥有pickedVertex中layer最“低”的那个面
// 这里需要加一个正负法线方向的判断 Todo
Face baseFace = faceContainVertex[0];
foreach (Face face in faceContainVertex)
{
if (face.Layer < baseFace.Layer)
baseFace = face;
}
// group中所有layer高于baseFace的面即为beBlendedFaces
beBlendedFaces = new List<Face>();
checkMask += 16;
foreach (Face face in group.GetFaceList())
{
if (face.Layer >= baseFace.Layer)
beBlendedFaces.Add(face);
}
}
bool AddGroup( FaceGroup fg )
{
foreach ( FaceGroup fgin in faceGroupList )
{
// 判断组里面是否已经有了这样的组
if ( CloverMath.IsTwoVectorTheSameDir( fg.Normal, fgin.Normal ) )
{
return false;
}
}
faceGroupList.Add( fg );
return true;
}
/// <summary>
/// 往lookuptable中加入face，会自动匹配加入group中或新增group。
/// 否则强制新建一个group
/// </summary>
/// <param name="f"></param>
void AddFace( Face f )
{
foreach ( FaceGroup fg in faceGroupList )
{
if ( fg.HasFace( f ) )
{
return;
}
if ( fg.IsMatch( f ) )
{
fg.AddFace( f );
return;
}
}
FaceGroup newfgt = new FaceGroup( f );
faceGroupList.Add( newfgt );
}
/// <summary>
/// 在foldup后更lookuptable
/// </summary>
/// <param name="participatedGroup">参与折叠的面</param>
/// <param name="movedFaceGroup">所有移动的面</param>
/// <param name="fixedFaceGroup">所有不动的面</param>
/// <param name="IsFacingUser">是否组的法线面向用户</param>
/// <returns></returns>
public bool UpdateTableAfterFoldUp( List<Face> participatedFaces, List<Face> movedFaces, List<Face> fixedFaces, bool IsFacingUser = true )
{
if (movedFaces.Count == 0)
return false;
RemoveRedundantFaceGroup();
FaceGroup participatedGroup = GetGroup( participatedFaces[ 0 ] );
FaceGroup movedFaceGroup = new FaceGroup( movedFaces[ 0 ] );
FaceGroup fixedFaceGroup = new FaceGroup( fixedFaces[ 0 ] );
foreach ( Face f in movedFaces )
{
if ( !movedFaceGroup.HasFace( f ) )
{
movedFaceGroup.AddFace( f );
}
}
foreach ( Face f in fixedFaces )
{
if ( !fixedFaceGroup.HasFace( f ) )
{
fixedFaceGroup.AddFace( f );
}
}
foreach ( Face fp in participatedGroup.GetFaceList() )
{
if ( fp.LeftChild == null && fp.RightChild == null )
{
if ( !movedFaceGroup.HasFace( fp ) && !fixedFaceGroup.HasFace( fp ) )
{
fixedFaceGroup.AddFace( fp );
}
}
}
fixedFaceGroup.SortFace();
fixedFaceGroup.Normal = participatedGroup.Normal;
return participatedGroup.UpdateGroupAfterFoldUp( participatedGroup, movedFaceGroup, fixedFaceGroup, IsFacingUser );
}
/// <summary>
/// bend后调用来更新lookuptable
/// </summary>
/// <returns></returns>
public bool UpdateTableAfterBending(double angle, bool IsFacingUser = true)
{
BendTpye bendtype;
if ( Math.Abs( angle ) < 0.00001 ) // 适应误差
{
bendtype = BendTpye.BlendZero;
}
else if ( Math.Abs( angle ) <= 180 && Math.Abs( angle ) >= 179.999999999999 )// 适应误差
{
bendtype = BendTpye.BlendSemiCycle;
}
else
{
bendtype = BendTpye.BlendNormally;
}
if (bendtype == BendTpye.BlendZero)
{
return true;
}
FaceGroup participateGroup = null;
// bend半周即180度
if (bendtype == BendTpye.BlendSemiCycle)
{
// 找到相关的组
foreach (FaceGroup fg in faceGroupList)
{
if ( CloverMath.IsTwoVectorTheSameDir(fg.Normal, bendingParticipateGroup.Normal))
{
if (participateGroup == null)
{
participateGroup = fg;
}
else if ( participateGroup != fg)
{
return false;// 一次只可能有一个组参与
}
}
}
faceGroupList.Remove( participateGroup );
bendingParticipateGroup.RevertFaces();
foreach (Face f in bendingParticipateGroup.GetFaceList())
{
participateGroup.RemoveFace( f );
}
participateGroup.SortFace();
bendingParticipateGroup.SortFace();
// 判断用户的方向：
if ( IsFacingUser ) // 组的正面面向用户
{
// 逆序从上贴合
int layer = 0;
int lastlayer = 0;
layer = participateGroup.GetTopLayer() + 1;
// 根据是否覆盖来调整layer的值
for ( int i = participateGroup.GetFaceList().Count - 1; i >= 0; i-- )
{
if ( !CloverMath.IsIntersectionOfTwoFaceOnOnePlane( bendingParticipateGroup.GetFaceList()[ bendingParticipateGroup.GetFaceList().Count - 1 ], participateGroup.GetFaceList()[ i ] ) )
{
layer--;
}
else if ( i == participateGroup.GetFaceList().Count - 1 )
{
break;
}
}
lastlayer = bendingParticipateGroup.GetTopLayer();
for ( int i = bendingParticipateGroup.GetFaceList().Count - 1; i >= 0; i-- )
{
if ( bendingParticipateGroup.GetFaceList()[ i ].Layer == lastlayer)
{
lastlayer = bendingParticipateGroup.GetFaceList()[ i ].Layer;
bendingParticipateGroup.GetFaceList()[ i ].Layer = layer;
}
else
{
lastlayer = bendingParticipateGroup.GetFaceList()[ i ].Layer;
layer++;
bendingParticipateGroup.GetFaceList()[ i ].Layer = layer;
}
participateGroup.AddFace( bendingParticipateGroup.GetFaceList()[ i ] );
}
}
else // 组背向用户
{
int layer = 0;
int lastlayer = 0;
layer = participateGroup.GetBottomLayer() + 1;
for ( int i = 0; i < participateGroup.GetFaceList().Count; i++ )
{
if ( !CloverMath.IsIntersectionOfTwoFaceOnOnePlane( bendingParticipateGroup.GetFaceList()[ 0 ], participateGroup.GetFaceList()[ i ] ) )
{
layer++;
}
else if (i == 0)
{
break;
}
}
lastlayer = bendingParticipateGroup.GetBottomLayer();
for ( int i = 0; i < bendingParticipateGroup.GetFaceList().Count; i++ )
{
if ( bendingParticipateGroup.GetFaceList()[ i ].Layer == lastlayer )
{
lastlayer = bendingParticipateGroup.GetFaceList()[ i ].Layer;
bendingParticipateGroup.GetFaceList()[ i ].Layer = layer;
}
else
{
lastlayer = bendingParticipateGroup.GetFaceList()[ i ].Layer;
layer--;
bendingParticipateGroup.GetFaceList()[ i ].Layer = layer;
}
participateGroup.AddFace( bendingParticipateGroup.GetFaceList()[ i ] );
}
}
faceGroupList.Add( participateGroup );
}
// 非180度的折叠
if (bendtype == BendTpye.BlendNormally)
{
if ( !IsBasicBendedFaceTheSameNormalWithItsGroup ) // 新组与原来的组排序方向不同，里面的面的顺序必须倒置
{
bendingParticipateGroup.RevertFaces();
}
// 更新参与bend的新组的法线
bendingParticipateGroup.Normal = bendingParticipateGroup.GetFaceList()[0].Normal;
// 寻找是否会和某个组重合
foreach (FaceGroup fg in faceGroupList)
{
if ( CloverMath.IsTwoVectorTheSameDir( fg.Normal, bendingParticipateGroup.Normal ))
{
if ( fg == bendingParticipateGroup)
{
continue;
}
if ( participateGroup == null )
{
participateGroup = fg;
}
else if ( participateGroup != fg )
{
return false;
}
}
}
if (participateGroup == null)
{
FaceGroup newgroup = (FaceGroup)bendingParticipateGroup.Clone();
AddGroup( newgroup );
bendtype = BendTpye.BlendZero;
bendingParticipateGroup = null;
return true; // 很幸运，没有什么组跟你重合
}
// 有和某个组巧妙地重合：
// 判断自己组的排序方向和对方是不是一样的
if ( !CloverMath.IsTwoVectorTheSameDir( participateGroup.Normal, bendingParticipateGroup.Normal, true ) )
{
bendingParticipateGroup.RevertFaces();
}
if ( IsFacingUser )// 用户面向对方的组
{
// 从上贴合
int layer = 0;
int lastlayer = 0;
// 根据是否覆盖来调整layer的值
for ( int i = participateGroup.GetFaceList().Count - 1; i >= 0; i-- )
{
if ( !CloverMath.IsIntersectionOfTwoFaceOnOnePlane( bendingParticipateGroup.GetFaceList()[ bendingParticipateGroup.GetFaceList().Count - 1 ], participateGroup.GetFaceList()[ i ] ) )
{
layer--;
}
else if ( i == participateGroup.GetFaceList().Count - 1 )
{
break;
}
}
layer = bendingParticipateGroup.GetTopLayer() + 1;
lastlayer = bendingParticipateGroup.GetBottomLayer();
for ( int i = 0; i < bendingParticipateGroup.Count; i++ )
{
if ( bendingParticipateGroup.GetFaceList()[ i ].Layer == lastlayer)
{
lastlayer = bendingParticipateGroup.GetFaceList()[ i ].Layer;
bendingParticipateGroup.GetFaceList()[ i ].Layer = layer;
}
else
{
lastlayer = bendingParticipateGroup.GetFaceList()[ i ].Layer;
layer++;
bendingParticipateGroup.GetFaceList()[ i ].Layer = layer;
}
participateGroup.AddFace( bendingParticipateGroup.GetFaceList()[ i ] );
}
}
else
{
// 从下贴合
int layer = 0;
int lastlayer = 0;
layer = participateGroup.GetBottomLayer();
layer--;
for ( int i = 0; i < participateGroup.GetFaceList().Count; i++ )
{
if ( !CloverMath.IsIntersectionOfTwoFaceOnOnePlane( bendingParticipateGroup.GetFaceList()[ 0 ], participateGroup.GetFaceList()[ i ] ) )
{
layer++;
}
else if (i == 0)
{
break;
}
}
lastlayer = participateGroup.GetTopLayer();
for ( int i = bendingParticipateGroup.GetFaceList().Count - 1; i >= 0; i-- )
{
if (bendingParticipateGroup.GetFaceList()[ i ].Layer == lastlayer)
{
lastlayer = bendingParticipateGroup.GetFaceList()[ i ].Layer;
bendingParticipateGroup.GetFaceList()[ i ].Layer = layer;
}
else
{
lastlayer = bendingParticipateGroup.GetFaceList()[ i ].Layer;
layer--;
bendingParticipateGroup.GetFaceList()[ i ].Layer = layer;
}
participateGroup.AddFace( bendingParticipateGroup.GetFaceList()[ i ] );
}
}
faceGroupList.Add( participateGroup );
}
bendtype = BendTpye.BlendZero;
bendingParticipateGroup = null;
return true;
}
/// <summary>
/// 在bend前调用
/// </summary>
/// <param name="faces">要bend的所有面</param>
/// <param name="angle">bend的角度,角度</param>
public bool BeforeBending(List<Face> faces)
{
if ( faces == null )
{
return false;
}
if ( faces.Count == 0)
{
return false;
}
if (bendingParticipateGroup != null)
{
return false;
}
// 建立bending的临时组
bendingParticipateGroup = new FaceGroup( faces[ 0 ] );
for ( int i = 1; i < faces.Count; i++ )
{
bendingParticipateGroup.AddFace( faces[ i ] );
}
bendingParticipateGroup.SortFace();
bendingParticipateGroup.Normal = bendingParticipateGroup.GetFaceList()[ 0 ].Normal;
if ( CloverMath.IsTwoVectorTheSameDir( bendingParticipateGroup.Normal, GetGroup( bendingParticipateGroup.GetFaceList()[ 0 ] ).Normal, true ) )
{
IsBasicBendedFaceTheSameNormalWithItsGroup = true;
}
for ( int i = 0; i < faces.Count; i++ )
{
RemoveFace( faces[ i ] );
}
UpdateGroup();
// 判断折叠样式
return true;
}
/// <summary>
/// 构造第一个面的时候初始化。
/// </summary>
/// <param name="f"></param>
public FaceGroupLookupTable( Face f )
{
FaceGroup g = new FaceGroup( f );
faceGroupList.Add( g );
}
/// <summary>
/// 更新整个组的面
/// </summary>
/// <param name="group"></param>
public void Update(FaceGroup group, Boolean autoUpdate = true)
{
foreach (Face face in group.GetFaceList())
{
faceMeshMap[face].Geometry = NewMesh(face, autoUpdate);
}
}
/// <summary>
/// 使纸张按组的法线方向散开
/// </summary>
/// <param name="group"></param>
public void DisperseLayer(FaceGroup group)
{
if (group == null || group.GetFaceList().Count == 0)
return;
List<Face> faceList = group.GetFaceList();
// 重置同组所有面的渲染点坐标
foreach (Face face in faceList)
{
foreach (Vertex v in face.Vertices)
{
v.RenderPoint = new Point3D(v.X, v.Y, v.Z);
}
}
// 从中间向两头逼近的算法
// 旭瑜你的group里面face的layer不能保证间距均为1
// 补丁by kid
int lastLayer = faceList[0].Layer;
for (int i = 1; i < faceList.Count; i++)
{
if (faceList[i].Layer == faceList[i - 1].Layer)
continue;
faceList[i].Layer = ++lastLayer;
}
int step = 1;
int baseval = step;
Double pivot = (faceList[faceList.Count - 1].Layer - faceList[0].Layer) / 2.0;
int up = 0, down = 0;
if (faceList.Count > 1)
for (int i = 0; i <= faceList.Count; i++)
if (faceList[i].Layer < pivot && faceList[i + 1].Layer > pivot)
{
down = i;
up = i + 1;
break;
}
while (true)
{
Vector3D offsetVec = group.Normal * (baseval);
while (up < faceList.Count)
{
foreach (Vertex v in faceList[up].Vertices)
v.RenderPoint = v.GetPoint3D() + offsetVec;
if (up + 1 == faceList.Count || faceList[up].Layer != faceList[up + 1].Layer)
break;
up++;
}
up++;
while (down > -1)
{
foreach (Vertex v in faceList[down].Vertices)
v.RenderPoint = v.GetPoint3D() - offsetVec;
if (down - 1 == -1 || faceList[down].Layer != faceList[down - 1].Layer)
break;
down--;
}
down--;
baseval += step;
if (up >= faceList.Count && down <= -1)
break;
}
//// sb算法
//int step = 6;
//Vector3D offsetVec = group.Normal * step;
//foreach (Face f in faceList)
//{
// foreach (Vertex v in f.Vertices)
// {
// v.RenderPoint += f.Layer * offsetVec;
// }
//}
//// 以当前总层数作为依据，指定offset值
//int step = 6;
////int step = 1;
//// 从faceList的两头向中间逼近，逐层计算偏移量
//Dictionary<Vertex, int> historyOffset = new Dictionary<Vertex, int>();// 这蛋疼的玩意记录了每个点的历史偏移量。一个顶点不可以两次偏向同一方向
//int bottom = 0;
//int top = faceList.Count - 1;
//int offset = (faceList[top].Layer - faceList[bottom].Layer) * step;
//while (top >= bottom)
//{
// Vector3D offVec = group.Normal * -offset;
// while (true)
// {
// foreach (Vertex v in faceList[bottom].Vertices)
// {
// v.RenderPoint += offVec;
// //if (!historyOffset.ContainsKey(v))
// //{
// // v.RenderPoint += offVec;
// // historyOffset[v] = -offset;
// //}
// //else
// //{
// // if (historyOffset[v] == 0)
// // {
// // v.RenderPoint += offVec;
// // historyOffset[v] = -offset;
// // }
// // else if (historyOffset[v] + offset == 0)
// // {
// // v.RenderPoint += offVec;
// // historyOffset[v] = 0;
// // }
// //}
// }
// bottom++;
// if (bottom + 1 > top || faceList[bottom].Layer != faceList[bottom + 1].Layer)
// break;
// }
// offVec *= -1;
// while (true)
// {
// foreach (Vertex v in faceList[top].Vertices)
// {
// v.RenderPoint += offVec;
// //if (!historyOffset.ContainsKey(v))
// //{
// // v.RenderPoint += offVec;
// // historyOffset[v] = offset;
// //}
// //else
// //{
// // if (historyOffset[v] == 0)
// // {
// // v.RenderPoint += offVec;
// // historyOffset[v] = offset;
// // }
// // else if (historyOffset[v] - offset == 0)
// // {
// // v.RenderPoint += offVec;
// // historyOffset[v] = 0;
// // }
// //}
// }
// top--;
// if (top - 1 < bottom || faceList[top].Layer != faceList[top - 1].Layer)
// break;
// }
// offset -= step;
//}
}