本文整理汇总了C++中QCPRange::expand方法的典型用法代码示例。如果您正苦于以下问题：C++ QCPRange::expand方法的具体用法？C++ QCPRange::expand怎么用？C++ QCPRange::expand使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类QCPRange的用法示例。
在下文中一共展示了QCPRange::expand方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: rescaleValueAxis
/*!
Rescales the value axis of the plottable so the whole plottable is visible.
Returns true if the axis was actually scaled. This might not be the case if this plottable has an
invalid range, e.g. because it has no data points.
See \ref rescaleAxes for detailed behaviour.
*/
void QCPAbstractPlottable::rescaleValueAxis(bool onlyEnlarge) const
{
QCPAxis *valueAxis = mValueAxis.data();
if (!valueAxis) { qDebug() << Q_FUNC_INFO << "invalid value axis"; return; }
SignDomain signDomain = sdBoth;
if (valueAxis->scaleType() == QCPAxis::stLogarithmic)
signDomain = (valueAxis->range().upper < 0 ? sdNegative : sdPositive);
bool foundRange;
QCPRange newRange = getValueRange(foundRange, signDomain);
if (foundRange)
{
if (onlyEnlarge)
newRange.expand(valueAxis->range());
if (!QCPRange::validRange(newRange)) // likely due to range being zero (plottable has only constant data in this axis dimension), shift current range to at least center the plottable
{
double center = (newRange.lower+newRange.upper)*0.5; // upper and lower should be equal anyway, but just to make sure, incase validRange returned false for other reason
if (valueAxis->scaleType() == QCPAxis::stLinear)
{
newRange.lower = center-valueAxis->range().size()/2.0;
newRange.upper = center+valueAxis->range().size()/2.0;
} else // scaleType() == stLogarithmic
{
newRange.lower = center/qSqrt(valueAxis->range().upper/valueAxis->range().lower);
newRange.upper = center*qSqrt(valueAxis->range().upper/valueAxis->range().lower);
}
}
valueAxis->setRange(newRange);
}
}示例2: normalized
/*!
Returns an expanded range that contains this and \a otherRange. It is assumed that both this
range and \a otherRange are normalized (see \ref normalize).
\see expand
*/
QCPRange QCPRange::expanded(const QCPRange &otherRange) const
{
QCPRange result = *this;
result.expand(otherRange);
return result;
}