/// <summary>
/// 画多边形的最后一条边
/// </summary>
/// <param name="color">当前边的颜色</param>
/// <param name="name">名称</param>
/// <return>true:成功构成多边形; false:多边形自相交或顶点过少</return>
public bool drawLastEdge(Color color, string name)
{
if (curPolygon.nVertex >= 3)
{
if (curPolygon.isSelfIntersect() == true)
{
MessageBox.Show("多边形自相交！");
return(false);
}
else
{
Point v1 = curPolygon.getLast();
Point v2 = curPolygon.getFirst();
curPolygon.changeVertexOrder();
drawLine_Bresenham(v1, v2, color);
curPolygon.Name = name;
listPolygon.AddLast(curPolygon);
return(true);
}
}
else
{
MessageBox.Show("顶点数不足3个，无法构成多边形！");
return(false);
}
}