public void TransformPointLight(Vector3D pointLightVector, Vector3D changeVector)
{
// Transform light vector.
TranslateTransform3D pointLightTransform = new TranslateTransform3D();
pointLightTransform.OffsetX = pointLightVector.X;
pointLightTransform.OffsetY = pointLightVector.Y;
pointLightTransform.OffsetZ = pointLightVector.Z;
_ptLight.Position = pointLightTransform.Transform(_ptLight.Position);
}
public void Calculate(List<Point> listCross, int pos, int len, double angle)
{
m_bounds = new Rect3D();
if (len <= 0)
{
return;
}
if (pos == 0)
{
m_Model3DGroup = GetNewGroup();
myModelVisual3D.Content = m_Model3DGroup;
Transform3DGroup transGroup = new Transform3DGroup();
m_axB3d = new AxisAngleRotation3D(new Vector3D(0, 0, 1), sliderB.Value);
RotateTransform3D myRotateTransform = new RotateTransform3D(m_axB3d);
transGroup.Children.Add(myRotateTransform);
m_axA3d = new AxisAngleRotation3D(new Vector3D(0, 1, 0), sliderA.Value);
myRotateTransform = new RotateTransform3D(m_axA3d);
transGroup.Children.Add(myRotateTransform);
m_trans3d = new TranslateTransform3D(new Vector3D(0, 0, 0));
transGroup.Children.Add(m_trans3d);
m_Model3DGroup.Transform = transGroup;
m_Model3DGroup.Children.Add(meshCubeModel);
}
GeometryModel3D myGeometryModel = new GeometryModel3D();
m_Model3DGroup.Children.Add(myGeometryModel);
MeshGeometry3D myMeshGeometry3D = new MeshGeometry3D();
Point3DCollection myPositionCollection = new Point3DCollection();
myGeometryModel.Geometry = myMeshGeometry3D;
List<Point3DCollection> Discs = new List<Point3DCollection>();
double cur_angle = 0;
double ZIncrement = 1;
if (MathHelper.IsZero(angle) &&
(m_listCurve == null || m_listCurve.Count < 2) &&
(m_listLimits == null || m_listLimits.Count < 2))
{
ZIncrement = len;
}
for (double Z = pos; Z <= pos + len; Z += ZIncrement)
{
Point3DCollection disc = new Point3DCollection();
cur_angle += angle;
AxisAngleRotation3D myRotation = new AxisAngleRotation3D(new Vector3D(0, 0, 1), cur_angle);
RotateTransform3D myRotateTransform = new RotateTransform3D(myRotation);
TranslateTransform3D transTransform = new TranslateTransform3D(0, 0, Z);
//ScaleTransform3D ScaleTrans = new ScaleTransform3D(new Vector3D(Zoom, Zoom, 0), new Point3D(0, 0, Z));
double RadLimit = GetRadiusLimit(Z);
double RadIncrement = GetRadiusIncrement(Z);
if (listCross.First() != listCross.Last())
{//make closed loop
listCross.Add(listCross.First());
}
for (int i = 0; i < listCross.Count; i++ )
{
double x = listCross[i].X;
double y = listCross[i].Y;
Vector3D vec = new Vector3D(x, y, 0);
if (!MathHelper.IsZero(RadIncrement))
{
Vector3D vecNorm = new Vector3D(x, y, 0);
double ZoomFactor = RadIncrement/10;
vec *= ZoomFactor;
}
if (vec.Length > RadLimit)
{
Vector3D vecNorm = new Vector3D(x, y, 0);
vecNorm.Normalize();
vec = vecNorm * RadLimit;
}
Point3D newPoint = (Point3D)myRotateTransform.Transform(vec);
newPoint = transTransform.Transform(newPoint);
disc.Add(newPoint);
}
if (Discs.Count == 0)
{
//крышки над примитивами
Point3DCollection disc0 = new Point3DCollection();
for (int i = 0; i < disc.Count; i++)
{
Point3D pt = disc[i];
pt.X = 0;
pt.Y = 0;
disc0.Add(pt);
}
Discs.Add(disc0);
}
Discs.Add(disc);
}
SolidColorBrush mySolidBrush1 = new SolidColorBrush();
mySolidBrush1.Color = Color.FromRgb(200, 110, 110);
DiffuseMaterial FrontMaterial = new DiffuseMaterial(mySolidBrush1);
SolidColorBrush mySolidBrush = new SolidColorBrush();
mySolidBrush.Color = Color.FromRgb(110, 200, 110);
DiffuseMaterial BackMaterial = new DiffuseMaterial(mySolidBrush);
myGeometryModel.Material = FrontMaterial;
myGeometryModel.BackMaterial = BackMaterial;
for (int i = 1; i < Discs.Count; i++)
{
Point3DCollection disc1 = Discs[i - 1];
Point3DCollection disc2 = Discs[i];
for (int j = 1; j < disc1.Count; j++)
{
Point3D p1 = disc1[j - 1];
Point3D p2 = disc1[j];
Point3D p3 = disc2[j];
Point3D p4 = disc2[j - 1];
myPositionCollection.Add(p4);
myPositionCollection.Add(p3);
myPositionCollection.Add(p1);
myPositionCollection.Add(p1);
myPositionCollection.Add(p3);
myPositionCollection.Add(p2);
}
}
myMeshGeometry3D.Positions = myPositionCollection;
m_bounds.Union(myMeshGeometry3D.Bounds);
Size3D mySize = m_bounds.Size;
string s = string.Format("X:{0},Y:{1},Z:{2}",(int)mySize.X,(int)mySize.Y,(int)mySize.Z);
labelInfo.Content = s;
}
/// <summary>
///
/// </summary>
/// <returns></returns>
public bool MoveToANewPosition(Vertex pickedVertex, List<Face> lastTimeMovedFaces, Edge lastFoldingLine,
Edge foldingLine, Point3D projectionPoint, Point3D lastProjectionPoint)
{
CloverController cloverController = CloverController.GetInstance();
// 用于计算矩阵的两个关键向量
Vector3D vectorFromLastFoldingLineToOriginVertex = new Vector3D();
Vector3D vectorFromCurrentFoldingLineToProjVertex = new Vector3D();
// 更新当前选中点到最新的状态
Vertex currentVertex = cloverController.VertexLayer.GetVertex(pickedVertex.Index);
// 从上次移动的面中找到带有选中点的那个面
Face pickedFaceAfterCutting = null;
// 从上次移动的面中找到带有选中点的那个面
foreach (Face face in lastTimeMovedFaces)
{
foreach (Vertex v in face.Vertices)
{
if (v == currentVertex)
{
if (pickedFaceAfterCutting == null || pickedFaceAfterCutting.Layer > face.Layer)
pickedFaceAfterCutting = face;
break;
}
}
}
if (pickedFaceAfterCutting == null)
return false;
// 在选定的面上找到与折线边顶点位置相等的那条边
Edge foldingLineOnFace = null;
foreach (Edge e in pickedFaceAfterCutting.Edges)
{
if (CloverMath.AreTwoEdgesEqual(e, lastFoldingLine))
foldingLineOnFace = e;
}
if (null == foldingLineOnFace)
return false;
// 在找到选顶点与折线的一条连线边，计算出计算角度所需的向量1
Edge edgeBeforeMoving = null;
foreach (Edge e in pickedFaceAfterCutting.Edges)
{
if (e.Vertex1 == currentVertex && e.Vertex2 == foldingLineOnFace.Vertex1)
{
edgeBeforeMoving = e;
break;
}
if (e.Vertex2 == currentVertex && e.Vertex1 == foldingLineOnFace.Vertex1)
{
edgeBeforeMoving = e;
break;
}
if (e.Vertex1 == currentVertex && e.Vertex2 == foldingLineOnFace.Vertex2)
{
edgeBeforeMoving = e;
break;
}
if (e.Vertex2 == currentVertex && e.Vertex1 == foldingLineOnFace.Vertex2)
{
edgeBeforeMoving = e;
break;
}
}
// 得到关键向量1
vectorFromLastFoldingLineToOriginVertex = edgeBeforeMoving.Vertex2.GetPoint3D() - edgeBeforeMoving.Vertex1.GetPoint3D();
// 在原始面中找到折线顶点所在的两条边，并用这两条边计算折线的纹理坐标
foreach (Edge e in pickedFaceAfterCutting.Parent.Edges)
{
// 判断折线的两个顶点，更新坐标并计算纹理
// 顶点1
if (CloverMath.IsPointInTwoPoints(foldingLineOnFace.Vertex1.GetPoint3D(), e.Vertex1.GetPoint3D(), e.Vertex2.GetPoint3D()))
{
cloverController.FoldingSystem.CalculateTexcoord(foldingLineOnFace.Vertex1, e);
if (CloverMath.IsPointInTwoPoints(foldingLine.Vertex1.GetPoint3D(), e.Vertex1.GetPoint3D(), e.Vertex2.GetPoint3D()))
{
foldingLineOnFace.Vertex1.SetPoint3D(foldingLine.Vertex1.GetPoint3D());
foldingLineOnFace.Vertex1.Moved = true;
}
else
{
foldingLineOnFace.Vertex1.SetPoint3D(foldingLine.Vertex2.GetPoint3D());
foldingLineOnFace.Vertex1.Moved = true;
}
}
// 顶点2
if (CloverMath.IsPointInTwoPoints(foldingLineOnFace.Vertex2.GetPoint3D(), e.Vertex1.GetPoint3D(), e.Vertex2.GetPoint3D()))
{
cloverController.FoldingSystem.CalculateTexcoord(foldingLineOnFace.Vertex2, e);
if (CloverMath.IsPointInTwoPoints(foldingLine.Vertex1.GetPoint3D(), e.Vertex1.GetPoint3D(), e.Vertex2.GetPoint3D()))
{
foldingLineOnFace.Vertex2.SetPoint3D(foldingLine.Vertex1.GetPoint3D());
foldingLineOnFace.Vertex2.Moved = true;
}
else
{
foldingLineOnFace.Vertex2.SetPoint3D(foldingLine.Vertex2.GetPoint3D());
foldingLineOnFace.Vertex2.Moved = true;
}
}
}
// 设置选中点的新位置为projectinPoint;
currentVertex.SetPoint3D(projectionPoint);
currentVertex.Moved = true;
// 找到选中点和折线之间的向量,得到关键向量2
vectorFromCurrentFoldingLineToProjVertex = edgeBeforeMoving.Vertex2.GetPoint3D() - edgeBeforeMoving.Vertex1.GetPoint3D();
// 计算所有上次移动面的折线，对于折线完全相等的直接更新到新的位置，对于不相等的要重新找打对应的边，然后计算折线位置，再更新折线
foreach (Face face in lastTimeMovedFaces)
{
if (face == pickedFaceAfterCutting)
continue;
Edge foldingLineForThisFace = null;
foreach (Edge e in face.Edges)
{
// 找到与原来折线共线的那条边
Point3D crossedPoint = new Point3D();
if (2 == CloverMath.GetIntersectionOfTwoSegments(lastFoldingLine, e, ref crossedPoint))
{
foldingLineForThisFace = e;
break;
}
}
// 假如木有折线，或者折线中的其中一个点和上面的折线拥有相同点返回
if (foldingLineForThisFace == null)
{
// 采用点更新法
foreach (Edge e in face.Edges)
{
// 假如其中有一条边的一个顶点等于新折线，而另一个顶点等于旧折线中的点，折更新旧点到新点
}
continue;
}
// 计算现在的折线位置
Edge currentFoldingLineForThisFace = CloverTreeHelper.GetEdgeCrossedFace(face, foldingLine);
if (currentFoldingLineForThisFace == null)
continue;
// 通过该面的原始面查询折线并更新折线位置和纹理坐标
foreach (Edge e in face.Parent.Edges)
{
// 判断折线的两个顶点，更新坐标并计算纹理
// 顶点1
if (CloverMath.IsPointInTwoPoints(foldingLineForThisFace.Vertex1.GetPoint3D(), e.Vertex1.GetPoint3D(), e.Vertex2.GetPoint3D()) &&
!foldingLineForThisFace.Vertex1.Moved)
{
cloverController.FoldingSystem.CalculateTexcoord(foldingLineForThisFace.Vertex1, e);
if (CloverMath.IsPointInTwoPoints(currentFoldingLineForThisFace.Vertex1.GetPoint3D(), e.Vertex1.GetPoint3D(), e.Vertex2.GetPoint3D()))
{
foldingLineOnFace.Vertex1.SetPoint3D(currentFoldingLineForThisFace.Vertex1.GetPoint3D());
foldingLineOnFace.Vertex1.Moved = true;
}
else
{
foldingLineOnFace.Vertex1.SetPoint3D(currentFoldingLineForThisFace.Vertex2.GetPoint3D());
foldingLineOnFace.Vertex1.Moved = true;
}
}
// 顶点2
if (CloverMath.IsPointInTwoPoints(foldingLineForThisFace.Vertex2.GetPoint3D(), e.Vertex1.GetPoint3D(), e.Vertex2.GetPoint3D()) &&
!foldingLineForThisFace.Vertex2.Moved)
{
cloverController.FoldingSystem.CalculateTexcoord(foldingLineForThisFace.Vertex2, e);
if (CloverMath.IsPointInTwoPoints(currentFoldingLineForThisFace.Vertex1.GetPoint3D(), e.Vertex1.GetPoint3D(), e.Vertex2.GetPoint3D()))
{
foldingLineOnFace.Vertex2.SetPoint3D(currentFoldingLineForThisFace.Vertex1.GetPoint3D());
foldingLineOnFace.Vertex2.Moved = true;
}
else
{
foldingLineOnFace.Vertex2.SetPoint3D(currentFoldingLineForThisFace.Vertex2.GetPoint3D());
foldingLineOnFace.Vertex2.Moved = true;
}
}
}
}
// 求得旋转量,并创建旋转矩阵
Vector3D axis = Vector3D.CrossProduct(vectorFromCurrentFoldingLineToProjVertex, vectorFromLastFoldingLineToOriginVertex);
axis.Normalize();
axis.Negate();
double angle = Vector3D.AngleBetween(vectorFromCurrentFoldingLineToProjVertex, vectorFromLastFoldingLineToOriginVertex);
AxisAngleRotation3D asixRotation = new AxisAngleRotation3D(axis, angle);
RotateTransform3D rotateTransform = new RotateTransform3D(asixRotation);
rotateTransform.CenterX = projectionPoint.X;
rotateTransform.CenterY = projectionPoint.Y;
rotateTransform.CenterZ = projectionPoint.Z;
// 创建平移矩阵
Vector3D vectorFromProjToOrigin = projectionPoint - lastProjectionPoint;
TranslateTransform3D translateTransform = new TranslateTransform3D(vectorFromProjToOrigin);
// 移动所有没有移动过的顶点
foreach (Face face in lastTimeMovedFaces)
{
foreach (Vertex v in face.Vertices)
{
if (!v.Moved)
{
v.SetPoint3D(translateTransform.Transform(v.GetPoint3D()));
v.SetPoint3D(rotateTransform.Transform(v.GetPoint3D()));
v.Moved = true;
}
}
}
// 最终更改所有顶点移动属性复位
foreach (Face face in lastTimeMovedFaces)
{
foreach (Vertex v in face.Vertices)
{
v.Moved = false;
}
}
// 更新渲染层
// 也许UpdateAll曾今给了你们许多欢乐的时光，但现在它应该退场了 ---kid
//cloverController.RenderController.UpdateAll();
//foreach (Face face in lastTimeMovedFaces)
//{
// cloverController.RenderController.Update(face);
//}
// 好吧。。你们还是继续使用UpdateAll好了。。 ---kid
cloverController.RenderController.UpdateAll();
return true;
}
public void UpdatePosition2(Point3D intersection)
{
Point3DCollection millPositionCollection = new Point3DCollection();
Vector3D vecTransform = new Vector3D(intersection.X, intersection.Y, 0);
vecTransform.Normalize();
vecTransform *= 50;
TranslateTransform3D myRotateTransform = new TranslateTransform3D(vecTransform);
{
Point3D p2 = myRotateTransform.Transform(intersection);
Point3D p3 = p2;
p3.Z += 20;
millPositionCollection.Add(intersection);
millPositionCollection.Add(p2);
millPositionCollection.Add(p3);
}
meshCube.Positions = millPositionCollection;
Vector3D intersection1 = (Vector3D)intersection;
intersection1.Z = 0;
string s = string.Format("Len:{3} X:{0},Y:{1},Z:{2}",
(int)intersection.X, (int)intersection.Y, (int)intersection.Z,
(int)intersection1.Length);
labelInfo2.Content = s;
}