//绘制高亮节点和其相关连边
void IfPaintStrategy.DrawHighLightNodeEdge(int iNum, Point newLoc, ref Graphics GraCam)
{
int intRadiusSource, intRadiusTarget;
dNode curNode = curNetwork.Network[iNum];
curNode.Location = newLoc;
//起始节点的半径
intRadiusSource = curNetwork.SharedImages[curNode.Degree].Width;
intRadiusSource = (intRadiusSource - 1) / 2;
foreach (Edge edge in curNode)
{
dNode tarNode = curNetwork.Network[edge.Target];
//目标节点的半径
intRadiusTarget = curNetwork.SharedImages[tarNode.Degree].Width;
intRadiusTarget = (intRadiusTarget - 1) / 2;
//起始节点到目标点连边
DrawLine(ref GraCam,
curNode.Location, intRadiusSource,
tarNode.Location, intRadiusTarget,
edge.Value);
if (curNetwork.Type == "无向图")
{
//目标点到起始节点连边
DrawLine(ref GraCam,
tarNode.Location, intRadiusTarget,
curNode.Location, intRadiusSource,
edge.Value);
}
}
if (curNetwork.Type == "有向图")
{
foreach (dNode tarNode in curNetwork.Network)
{
if (tarNode.Contains(iNum) == true)
{
//目标节点的半径
intRadiusTarget = curNetwork.SharedImages[tarNode.Degree].Width;
intRadiusTarget = (intRadiusTarget - 1) / 2;
//目标节点到起始节点的连边
DrawLine(ref GraCam,
tarNode.Location, intRadiusTarget,
curNode.Location, intRadiusSource,
tarNode.GetWeight(iNum));
}
}
}
//绘制高亮节点
DrawHighLightNode(iNum, ref GraCam);
}
//高亮节点绘制函数
public void DrawHighLightNode(int iNum, ref Graphics GraCam)
{
Image img;
PaintParameter curNodePara;
Point potStart;
dNode curNode = curNetwork.Network[iNum];
//计算网络绘制参数
curNodePara = new PaintParameter(iNum, curNode.Degree, curNetwork.MaxDeg, curNetwork.MinDeg);
//获取绘制完成的图片
img = this.DrawNode(curNodePara, true);
//在图元对应位置绘制图片
GraCam.DrawImage(img, new Point(curNode.Location.X - img.Width / 2, curNode.Location.Y - img.Height / 2));
//计算编号绘制起点
potStart = new Point(curNode.Location.X - curNode.Offset.X, curNode.Location.Y - curNode.Offset.Y);
//绘制节点编号
this.DrawString(iNum.ToString(), potStart, ref GraCam, true);
}