/// <summary>
/// 按逆时针方向获得边界圈
/// </summary>
/// <param name="first"></param>
/// <returns></returns>
private BorderCircleList BuildCircle ( BorderPoint first )
{
BorderCircleList result = new BorderCircleList();
BorderNode firstNode = new BorderNode( first );
result.AddLast( firstNode );
Point prePoint = new Point();
Point curPoint = firstNode.value.p;
try
{
//set the prePoint at the first time!
SetPrePointFirstTime( firstNode.value.p, ref prePoint );
bool linked = false;
while (!linked)
{
bool findNext = false;
foreach (Point p in SurroundQueue( curPoint, prePoint ))
{
if (borderMap[p.X, p.Y] && p != prePoint)
{
findNext = true;
if (p == firstNode.value.p)
{
linked = true;
result.LinkLastAndFirst();
break;
}
result.AddLast( new BorderPoint( p ) );
prePoint = curPoint;
curPoint = p;
break;
}
}
if (!findNext)
{
#if SHOWERROR
//ShowDataToConsole();
//ShowCurListResult( result );
#endif
throw new BorderBulidException( curPoint, prePoint, borderMap );
}
}
}
// 如果此处出现异常，往往是导入的图片不能满足要求。
// 将在输出中打印出图片上具体出错的位置。
// 需要重新修改图片以正常使用。
catch (BorderBulidException e)
{
#if SHOWERROR
//ShowDataToConsole();
//ShowCurListResult( result );
#endif
throw e;
//return result;
}
return result;
}
/// <summary>
/// 按逆时针方向获得边界圈
/// </summary>
/// <param name="first"></param>
/// <returns></returns>
private BorderCircleList BuildCircle(BorderPoint first)
{
BorderCircleList result = new BorderCircleList();
BorderNode firstNode = new BorderNode(first);
result.AddLast(firstNode);
Point prePoint = new Point();
Point curPoint = firstNode.value.p;
try
{
//set the prePoint at the first time!
SetPrePointFirstTime(firstNode.value.p, ref prePoint);
bool linked = false;
while (!linked)
{
bool findNext = false;
foreach (Point p in SurroundQueue(curPoint, prePoint))
{
if (borderMap[p.X, p.Y] && p != prePoint)
{
findNext = true;
if (p == firstNode.value.p)
{
linked = true;
result.LinkLastAndFirst();
break;
}
result.AddLast(new BorderPoint(p));
prePoint = curPoint;
curPoint = p;
break;
}
}
if (!findNext)
{
#if SHOWERROR
//ShowDataToConsole();
//ShowCurListResult( result );
#endif
throw new BorderBulidException(curPoint, prePoint, borderMap);
}
}
}
// 如果此处出现异常，往往是导入的图片不能满足要求。
// 将在输出中打印出图片上具体出错的位置。
// 需要重新修改图片以正常使用。
catch (BorderBulidException e)
{
#if SHOWERROR
//ShowDataToConsole();
//ShowCurListResult( result );
#endif
throw e;
//return result;
}
return(result);
}
