78 lines
1.5 KiB
C++
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_);
|
|
}
|