mirror of https://github.com/mosra/magnum.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
92 lines
2.3 KiB
92 lines
2.3 KiB
14 years ago
|
#ifndef Magnum_Timeline_h
|
||
|
|
#define Magnum_Timeline_h
|
||
|
|
/*
|
||
|
|
Copyright © 2010, 2011, 2012 Vladimír Vondruš <mosra@centrum.cz>
|
||
|
|
|
||
|
|
This file is part of Magnum.
|
||
|
|
|
||
|
|
Magnum is free software: you can redistribute it and/or modify
|
||
|
|
it under the terms of the GNU Lesser General Public License version 3
|
||
|
|
only, as published by the Free Software Foundation.
|
||
|
|
|
||
|
|
Magnum is distributed in the hope that it will be useful,
|
||
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
GNU Lesser General Public License version 3 for more details.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <chrono>
|
||
|
|
|
||
|
|
#include "Magnum.h"
|
||
|
|
|
||
|
|
#include "magnumVisibility.h"
|
||
|
|
|
||
|
|
/** @file
|
||
|
|
* @brief Class Magnum::Timeline
|
||
|
|
*/
|
||
|
|
|
||
|
|
namespace Magnum {
|
||
|
|
|
||
|
|
/** @brief %Timeline */
|
||
|
|
class MAGNUM_EXPORT Timeline {
|
||
|
|
public:
|
||
|
|
/**
|
||
|
|
* @brief Constructor
|
||
|
|
*
|
||
|
|
* Constructs stopped timeline.
|
||
|
|
* @see start()
|
||
|
|
*/
|
||
|
|
inline constexpr Timeline(): _minimalFrameTime(0), _previousFrameDuration(0), running(false) {}
|
||
|
|
|
||
|
|
/** @brief Minimal frame time (in seconds) */
|
||
|
|
GLfloat minimalFrameTime() const { return _minimalFrameTime; }
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Set minimal frame time
|
||
|
|
*
|
||
|
|
* @see nextFrame()
|
||
|
|
*/
|
||
|
|
void setMinimalFrameTime(GLfloat seconds) {
|
||
|
|
_minimalFrameTime = seconds;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Start timeline
|
||
|
|
*
|
||
|
|
* Sets previous frame duration to `0`.
|
||
|
|
* @see stop(), previousFrameDuration()
|
||
|
|
*/
|
||
|
|
void start();
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Stop timeline
|
||
|
|
*/
|
||
|
|
void stop();
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Advance to next frame
|
||
|
|
*
|
||
|
|
* If current frame time is smaller than minimal frame time, pauses
|
||
|
|
* the execution for remaining time.
|
||
|
|
* @note This function does nothing if the timeline is stopped.
|
||
|
|
* @see setMinimalFrameTime()
|
||
|
|
*/
|
||
|
|
void nextFrame();
|
||
|
|
|
||
|
|
/** @brief Duration of previous frame */
|
||
|
|
inline constexpr GLfloat previousFrameDuration() const {
|
||
|
|
return _previousFrameDuration;
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
std::chrono::high_resolution_clock::time_point previousFrameTime;
|
||
|
|
GLfloat _minimalFrameTime;
|
||
|
|
GLfloat _previousFrameDuration;
|
||
|
|
|
||
|
|
bool running;
|
||
|
|
};
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|