/// <summary>
/// 找出与元器件drawObject结点相连的直线锚点信息
/// </summary>
/// <param name="drawArea"></param>
/// <param name="resizedObject">输入一个要得出直线锚点的元器件</param>
/// <returns>返回一个数组第一列表示该元器件的结点，第二列表示与该结点连接的直线索引，第三列表示直线的锚点编号</returns>
public List <int[]> FindLineHandle(DrawArea drawArea, DrawObject drawObject)
{
List <int[]> temp = new List <int[]>();
int i, j, k;
Point Position;
double distance = 100;
for (i = 0; i < drawArea.GraphicsList.Count; i++)
{
DrawObject temp1 = drawArea.GraphicsList[i];
if (temp1 is DrawLine)
{
for (j = 1; j <= drawObject.NodeCount; j++)
{
//得到每个结点的坐标，寻找与该结点相连的直线
Position = drawObject.GetNode(j);
for (k = 1; k <= 2; k++)
{
Point p = temp1.GetHandle(k);
distance = Math.Sqrt((Position.X - p.X) * (Position.X - p.X) + (Position.Y - p.Y) * (Position.Y - p.Y));
if (distance < 10)
{
DrawLine DL = temp1 as DrawLine;
if (DL.FindEquipmentID[k - 1] == drawObject.ObjectID && DL.FindNodeID[k - 1] == j)
{
//该直线k锚点就是连接的这个结点
temp.Add(new int[] { j, i, k });
break;
}
else if (DL.ConncetSNodeCount() == 0)
{
//如果线的两端都没有连结点
temp.Add(new int[] { j, i, k });
DL.FindNodeID[k - 1] = j;
DL.FindEquipmentID[k - 1] = drawObject.ObjectID;
break;
}
else if (DL.ConncetSNodeCount() == 1 && DL.FindEquipmentID[k - 1] == 0)
{
//如果线只连接了一个其他元器件的结点,则可以将该线没有连接结点的锚点于结点连接
temp.Add(new int[] { j, i, k });
DL.FindNodeID[k - 1] = j;
DL.FindEquipmentID[k - 1] = drawObject.ObjectID;
AddEdge(drawArea, DL);
break;
}
}
}
}
}
}
return(temp);
}
public override void OnMouseMove(DrawArea drawArea, System.Windows.Forms.MouseEventArgs e)
{
Point point = new Point(e.X, e.Y);
Point oldPoint = lastPoint;
CF.NodeRange(drawArea, e);//画结点区域
if (e.Button == MouseButtons.None)
{
#region 在没有按住任何鼠标键的情况下，随着鼠标移动而改变指针形状
Cursor cursor = null;
for (int i = 0; i < drawArea.GraphicsList.Count; i++)
{
int n = drawArea.GraphicsList[i].HitTest(point);
if (n > 0)
{
cursor = drawArea.GraphicsList[i].GetHandleCursor(n);
break;
}
}
if (cursor == null)
{
cursor = Cursors.Default;
}
drawArea.Cursor = cursor;
return;
#endregion
}
//按住的不是鼠标左键
if (e.Button != MouseButtons.Left)
{
return;
}
//按住鼠标左键移动
int dx = e.X - lastPoint.X;
int dy = e.Y - lastPoint.Y;
lastPoint.X = e.X;
lastPoint.Y = e.Y;
if (pointerMode == PointerMode.Size)
{
#region 改变大小
if (resizedObject != null)
{
if (resizedObject is DrawLine)
{
// 如果线的一端在结点范围之内则将该点与结点相连
Point p = CF.OnRange(drawArea);
if (p.X < 0 || p.Y < 0)
{
if (IsCtrlOn)
{
resizedObject.MoveHandleTo(point, 10 * resizedObjectHandle);
}
else if (IsShiftOn)
{
resizedObject.MoveHandleTo(point, 30 * resizedObjectHandle);
}
else
{
resizedObject.MoveHandleTo(point, resizedObjectHandle);
}
}
else
{
if (IsCtrlOn)
{
resizedObject.MoveHandleTo(p, 10 * resizedObjectHandle);
}
else if (IsShiftOn)
{
resizedObject.MoveHandleTo(p, 30 * resizedObjectHandle);
}
else
{
resizedObject.MoveHandleTo(p, resizedObjectHandle);
}
}
}
else
{
//如果移动的是元器件的结点
List <int[]> LIndex = CF.FindLineHandle(drawArea, resizedObject);
Point location;
if (IsShiftOn)
{
//如果该元器件有导线连接则导线随元器件的大小变动，此时是按住SHIFT键的时候
if (LIndex.Count != 0)
{
int[] index;
//循环遍历与该结点相连的所有直线锚点
for (int i = 0; i < LIndex.Count; i++)
{
index = LIndex[i];//得到其中一个直线锚点
location = resizedObject.GetNode(index[0]);
resizedObject.MoveHandleTo(point, 10);
Point newp = resizedObject.GetNode(index[0]);
int cx = newp.X - location.X;
int cy = newp.Y - location.Y;
//找出相对应的直线，改变直线中相应锚点的位置
DrawObject O = drawArea.GraphicsList[index[1]];
O.MoveHandleTo(new Point(location.X + cx, location.Y + cy), index[2]);
}
}
else
{
resizedObject.MoveHandleTo(point, 10);
}
}
else
{
//如果该元器件有导线连接则导线随元器件的大小变动
if (LIndex.Count != 0)
{
int[] index;
for (int i = 0; i < LIndex.Count; i++)
{
//得到结点连接的每一个直线锚点信息
index = LIndex[i];
location = resizedObject.GetNode(index[0]);
resizedObject.MoveHandleTo(point, resizedObjectHandle);
Point newp = resizedObject.GetNode(index[0]);
int cx = newp.X - location.X;
int cy = newp.Y - location.Y;
DrawObject O = drawArea.GraphicsList[index[1]];
O.MoveHandleTo(new Point(location.X + cx, location.Y + cy), index[2]);
}
}
else
{
resizedObject.MoveHandleTo(point, resizedObjectHandle);
}
}
}
drawArea.Refresh();
}
#endregion
}
if (pointerMode == PointerMode.Move)
{
#region 移动图形
if (drawArea.GraphicsList.Selection != null)
{
List <int[]> L;
foreach (DrawObject o in drawArea.GraphicsList.Selection)
{
Point location = new Point();
//找出与元器件o结点相连的直线描点
L = CF.FindLineHandle(drawArea, o);
int[] index;
for (int i = 0; i < L.Count; i++)
{
index = L[i];
location = o.GetNode(index[0]);
DrawObject O = drawArea.GraphicsList[index[1]];
O.MoveHandleTo(new Point(location.X + dx, location.Y + dy), index[2]);
}
o.Move(dx, dy);
}
drawArea.Cursor = Cursors.SizeAll;
drawArea.Refresh();
}
#endregion
}
if (pointerMode == PointerMode.Net)
{
#region 空绘制矩形
// 移除旧的矩形
ControlPaint.DrawReversibleFrame(
drawArea.RectangleToScreen(DrawRectanlge.GetNormalizedRectangle(startPoint, oldPoint)),
Color.Black,
FrameStyle.Dashed);
// 绘制新的矩形
ControlPaint.DrawReversibleFrame(
drawArea.RectangleToScreen(DrawRectanlge.GetNormalizedRectangle(startPoint, point)),
Color.Black,
FrameStyle.Dashed);
#endregion
}
}
