53 lines
1.1 KiB
C++
53 lines
1.1 KiB
C++
#include "timelinescaledobject.h"
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#include <QtMath>
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TimelineScaledObject::TimelineScaledObject() :
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scale_(1.0)
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{
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}
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const rational &TimelineScaledObject::timebase()
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{
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return timebase_;
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}
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const double &TimelineScaledObject::timebase_dbl()
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{
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return timebase_dbl_;
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}
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rational TimelineScaledObject::SceneToTime(const double &x, const double &x_scale, const rational &timebase, bool round)
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{
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double unscaled_time = x / x_scale / timebase.toDouble();
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// Adjust screen point by scale and timebase
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qint64 rounded_x_mvmt;
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if (round) {
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rounded_x_mvmt = qRound64(unscaled_time);
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} else {
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rounded_x_mvmt = qFloor(unscaled_time);
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}
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// Return a time in the timebase
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return rational(rounded_x_mvmt * timebase.numerator(), timebase.denominator());
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}
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double TimelineScaledObject::TimeToScene(const rational &time)
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{
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return time.toDouble() * scale_;
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}
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rational TimelineScaledObject::SceneToTime(const double &x, bool round)
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{
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return SceneToTime(x, scale_, timebase_, round);
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}
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void TimelineScaledObject::SetTimebaseInternal(const rational &timebase)
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{
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timebase_ = timebase;
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timebase_dbl_ = timebase_.toDouble();
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}
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