| public static clamp ( double value, double min, double max ) : double | ||
| value | double | |
| min | double | |
| max | double | |
| 리턴 | double | |
/// <summary>
/// 设置页数
/// </summary>
/// <param name="page">页数</param>
/// <param name="immediately">是否瞬间跳转</param>
private void setPage(int page, bool immediately = false)
{
//编辑器模式强制为true
if (ShineSetting.isEditor)
{
immediately = true;
}
int tmpPage = page;
page = _loop ? MathUtils.absMod(page, _totalPage) : MathUtils.clamp(page, 0, _totalPage - 1);
if (_curPage != page && _newPageAction != null)
{
_newPageAction(page);
}
_curPage = page;
float scrollPos;
if (_scrollType == SScrollType.Vertical)
{
scrollPos = _loop ? tmpPage * (_row * -_gridCoverHeight - _pageAddSpace) : _curPage * (_row * -_gridCoverHeight - _pageAddSpace);
}
else
{
scrollPos = _loop ? tmpPage * (_column * _gridCoverWidth + _pageAddSpace) : _curPage * (_column * _gridCoverWidth + _pageAddSpace);
}
killChangePageTween();
if (immediately)
{
setScrollPos(scrollPos);
}
else
{
//寻找最近位置
if (_loop)
{
float distance = _maxRealPos - _minRealPos;
scrollPos = getNearPos(_scrollPos, scrollPos, scrollPos + distance, scrollPos - distance);
}
_changePageTweenIndex = Tween.normal.create(_scrollPos, scrollPos, ChangePageTime, setScrollPos, killChangePageTween);
}
}
private void refreshGrid(int index)
{
/** 滚动的格子数 */
int scrollNum;
/** 滚动的页数 */
int scrollPageNum;
/** 滚动的偏移量 */
float offset;
/** 翻页影响的滚动偏移量 */
float offsetPage;
/** 实际滚动的像素数（即不包括拉到头之后再继续拉的距离） */
float realScrollPos = _loop ? _scrollPos : MathUtils.clamp(_scrollPos, _minRealPos, _maxRealPos);
int dataRow;
int dataIndex;
int curRow;
int curColumn;
int tmpColumnOrRowNum;
int tmpChangePageNum;
Vector3 tmpPos;
if (_scrollType == SScrollType.Vertical)
{
scrollPageNum = (int)Math.Floor(realScrollPos / (-_gridCoverHeight * _row - _pageAddSpace));
tmpColumnOrRowNum = (int)Math.Floor((realScrollPos - scrollPageNum * (-_gridCoverHeight * _row - _pageAddSpace)) / -_gridCoverHeight);
if (tmpColumnOrRowNum > _row)
{
tmpColumnOrRowNum = _row;
}
scrollNum = scrollPageNum * _row + tmpColumnOrRowNum;
tmpChangePageNum = _row - scrollNum + scrollPageNum * _row;
offset = scrollNum * -_gridCoverHeight - scrollPageNum * _pageAddSpace - _scrollPos;
int startRow = index / _column;
curRow = MathUtils.absMod(startRow - scrollNum, _row + 1);
curColumn = index % _column;
offsetPage = curRow < tmpChangePageNum ? 0 : -_pageAddSpace;
RectTransform objTransform = _gridList[index];
tmpPos = objTransform.anchoredPosition;
tmpPos.y = curRow * -_gridCoverHeight + offset + offsetPage;
objTransform.anchoredPosition = tmpPos;
dataRow = startRow + (int)Math.Floor((float)(_row - startRow + scrollNum) / (_row + 1)) * (_row + 1);
dataIndex = dataRow * _column + curColumn;
if (_loop)
{
dataIndex = MathUtils.absMod(dataIndex, (int)Math.Ceiling((float)_dataList.size() / (_row * _column)) * _row * _column);
}
if (dataIndex >= _dataList.size())
{
setData(index, -1);
}
else
{
setData(index, dataIndex);
}
}
else
{
scrollPageNum = (int)Math.Floor(realScrollPos / (_gridCoverWidth * _column + _pageAddSpace));
tmpColumnOrRowNum = (int)Math.Floor((realScrollPos - scrollPageNum * (_gridCoverWidth * _column + _pageAddSpace)) / _gridCoverWidth);
if (tmpColumnOrRowNum > _column)
{
tmpColumnOrRowNum = _column;
}
scrollNum = scrollPageNum * _column + tmpColumnOrRowNum;
tmpChangePageNum = _column - scrollNum + scrollPageNum * _column;
offset = scrollNum * _gridCoverWidth + scrollPageNum * _pageAddSpace - _scrollPos;
int startColumn = index / _row;
curColumn = MathUtils.absMod(startColumn - scrollNum, _column + 1);
curRow = index % _row;
offsetPage = curColumn < tmpChangePageNum ? 0 : _pageAddSpace;
RectTransform objTransform = _gridList[index];
tmpPos = objTransform.anchoredPosition;
tmpPos.x = curColumn * _gridCoverWidth + offset + offsetPage;
objTransform.anchoredPosition = tmpPos;
dataRow = startColumn + (int)Math.Floor((float)(_column + 1 - 1 - startColumn + scrollNum) / (_column + 1)) * (_column + 1);
dataIndex = dataRow * _row + curRow;
if (_loop)
{
dataIndex = MathUtils.absMod(dataIndex, (int)Math.Ceiling((float)_dataList.size() / (_row * _column)) * _row * _column);
}
dataIndex = _column * (dataIndex % _row) + dataIndex / _row + dataIndex / (_row * _column) * (_row - 1) * _column; //横向滚动的每页数据也要采用竖向排布
if (dataIndex >= _dataList.size())
{
setData(index, -1);
}
else
{
setData(index, dataIndex);
}
}
}
private void setScrollPos(float pos)
{
_scrollPos = _loop ? _minRealPos + MathUtils.absMode(pos - _minRealPos, _maxRealPos - _minRealPos) : MathUtils.clamp(pos, _minRealPos - _maxOutDistance, _maxRealPos + _maxOutDistance);
int len = _gridList.Length;
for (var i = 0; i < len; i++)
{
refreshGrid(i);
}
}