itsmattkc
b713ab47eb
When adjusting a slider, keyframe time, or curve value, it is undesirable to re-cache the entire affected area while the user is still dragging UI objects. Since the video is unlikely to be playing, the priority must go to the currently active frame so the user gets visual feedback on the rendered image as soon as possible. This was implemented in some areas, but this commit should have that functionality in all areas.
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() const
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{
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return timebase_;
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}
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const double &TimelineScaledObject::timebase_dbl() const
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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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