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#include "UBInterpolator.h"
UBInterpolator::UBInterpolator()
{
}
UBInterpolator::~UBInterpolator()
{
}
UBQuadraticBezier::UBQuadraticBezier()
{
mPath = 0;
}
UBQuadraticBezier::~UBQuadraticBezier()
{
if (mPath)
delete mPath;
}
void UBQuadraticBezier::setPoints(QList<QPointF> points)
{
setPoints(points[0], points[1], points[2]);
}
void UBQuadraticBezier::setPoints(QPointF start, QPointF control, QPointF end)
{
mPath = new QPainterPath(start);
mPath->quadTo(control, end);
}
/**
* @brief Return n points along the curve, including start and end points (thus n should be larger than or equal to 2).
*
* The higher n, the more accurate the resulting curve will be.
*/
QList<QPointF> UBQuadraticBezier::getPoints(int n)
{
QList<QPointF> points;
if (n <= 1)
return points;
for (int i(0); i <= n; ++i) {
qreal percent = qreal(i)/qreal(n);
points << mPath->pointAtPercent(percent);
}
return points;
}