Files
oak-editor/app/widget/timelinewidget/timelinescaledobject.cpp
T
2020-02-01 21:35:30 +11:00

78 lines
1.5 KiB
C++

#include "timelinescaledobject.h"
#include <cfloat>
#include <QtMath>
TimelineScaledObject::TimelineScaledObject() :
scale_(1.0),
max_scale_(DBL_MAX)
{
}
void TimelineScaledObject::SetTimebase(const rational &timebase)
{
timebase_ = timebase;
timebase_dbl_ = timebase_.toDouble();
TimebaseChangedEvent(timebase);
}
const rational &TimelineScaledObject::timebase() const
{
return timebase_;
}
const double &TimelineScaledObject::timebase_dbl() const
{
return timebase_dbl_;
}
rational TimelineScaledObject::SceneToTime(const double &x, const double &x_scale, const rational &timebase, bool round)
{
double unscaled_time = x / x_scale / timebase.toDouble();
// Adjust screen point by scale and timebase
qint64 rounded_x_mvmt;
if (round) {
rounded_x_mvmt = qRound64(unscaled_time);
} else {
rounded_x_mvmt = qFloor(unscaled_time);
}
// Return a time in the timebase
return rational(rounded_x_mvmt * timebase.numerator(), timebase.denominator());
}
double TimelineScaledObject::TimeToScene(const rational &time)
{
return time.toDouble() * scale_;
}
rational TimelineScaledObject::SceneToTime(const double &x, bool round)
{
return SceneToTime(x, scale_, timebase_, round);
}
void TimelineScaledObject::SetMaximumScale(const double &max)
{
max_scale_ = max;
if (GetScale() > max_scale_) {
SetScale(max_scale_);
}
}
const double& TimelineScaledObject::GetScale() const
{
return scale_;
}
void TimelineScaledObject::SetScale(const double& scale)
{
scale_ = scale;
ScaleChangedEvent(scale_);
}