List <SectorLayoutPointInfor> m_AllSectorLayoutPoints = new List <SectorLayoutPointInfor>(); //所有划分出来的点
#endregion
/// <summary>
/// 获得扇形布局的点的数据 要求根据这个点生成的对象的中心点必须是(0.5f,0)
/// </summary>
/// <param name="pointCount"></param>
/// <returns></returns>
public List <SectorLayoutPointInfor> GetSectorLayout(uint pointCount)
{
m_AllSectorLayoutPoints.Clear();
if (pointCount % 2 == 0)
{
//Debug.LogInfor("偶数布局");
CaculateSectorLayoutPoint(pointCount / 2, false, false); //左侧
CaculateSectorLayoutPoint(pointCount / 2, false, true); //右侧
}
else
{
// Debug.LogInfor("奇数布局");
CaculateSectorLayoutPoint((pointCount - 1) / 2, true, false);
SectorLayoutPointInfor middlePoint = new SectorLayoutPointInfor();
middlePoint.m_RalativePos = new Vector3(0, m_Radius, 0);
middlePoint.m_WorldPos = m_SectorLayoutCenterTrans.position + middlePoint.m_RalativePos;
m_AllSectorLayoutPoints.Add(middlePoint); //记录当前生成的中心点
CaculateSectorLayoutPoint((pointCount - 1) / 2, true, true);
}
return(m_AllSectorLayoutPoints);
}
/// <summary>
/// 计算扇形布局点的位置
/// </summary>
/// <param name="count">需要计算的点的数量</param>
/// <param name="isStartFromMiddle">是否从正中间点开始计算 (当数据是奇数个时候为true,偶数个应该为false)</param>
/// <param name="isLeftToRight">中心店右边的布局是true ,左边布是false</param>
private void CaculateSectorLayoutPoint(uint count, bool isStartFromMiddle, bool isLeftToRight)
{
if (count == 0)
{
return;
}
List <SectorLayoutPointInfor> allSectorPoints = new List <SectorLayoutPointInfor>(); //当前创建出来的点
#region 计算两个扇形区域之间的夹角 并限定在指定[m_AngleOffset_Min,m_AngleOffset_Max] 之间
float angleOffset = m_MaxLayoutAngle / count; //初步计算出来两个扇形区域之间的角度
// Debug.LogInfor("angleOffset=" + angleOffset);
//使得两个扇形区域之间的角度范围被限制住在[m_AngleOffset_Min,m_AngleOffset_Max]
if (m_AngleOffset_Min < m_AngleOffset_Max)
{
angleOffset = Mathf.Clamp(angleOffset, m_AngleOffset_Min, m_AngleOffset_Max);
}
else
{
angleOffset = Mathf.Clamp(angleOffset, m_AngleOffset_Max, m_AngleOffset_Min);
}
#endregion
for (int dex = 1; dex <= count; ++dex)
{
#region 根据点的索引计算每个点再扇形布局上的坐标以及需要旋转的角度
float curOffsetAngle = 0;
if (isStartFromMiddle)
{
curOffsetAngle = dex * angleOffset;
}
else
{
curOffsetAngle = dex * angleOffset - angleOffset / 2f; //为了确保两个点之间的夹角相同这里必须减去半个夹角才能确保中间的两个点之间也是相差 angleOffset
}
SectorLayoutPointInfor trans = new SectorLayoutPointInfor();
if (isLeftToRight)
{
trans.m_Angle = -1 * curOffsetAngle;
}
else
{
trans.m_Angle = curOffsetAngle;
}
curOffsetAngle = Mathf.Deg2Rad * curOffsetAngle; //转换成弧度
if (isLeftToRight)
{
trans.m_RalativePos = new Vector3(Mathf.Sin(curOffsetAngle), Mathf.Cos(curOffsetAngle), 0) * m_Radius;
}
else
{
trans.m_RalativePos = new Vector3(-1 * Mathf.Sin(curOffsetAngle), Mathf.Cos(curOffsetAngle), 0) * m_Radius;
}
trans.m_WorldPos = trans.m_RalativePos + m_SectorLayoutCenterTrans.position;
//if (isLeftToRight)
// trans.m_WorldPos = m_SectorLayoutCenterTrans.position + new Vector3(Mathf.Sin(curOffsetAngle), Mathf.Cos(curOffsetAngle), 0) * m_Radius;
//else
// trans.m_WorldPos = m_SectorLayoutCenterTrans.position + new Vector3(-1 * Mathf.Sin(curOffsetAngle), Mathf.Cos(curOffsetAngle), 0) * m_Radius;
#endregion
allSectorPoints.Add(trans); //记录当前生成的点
}
if (isLeftToRight == false)
{
allSectorPoints.Reverse(); //确保记录的数据是从左向右一次添加的
}
m_AllSectorLayoutPoints.AddRange(allSectorPoints);
}
