39 lines
1 KiB
C++
39 lines
1 KiB
C++
#include "periodic_updates.hpp"
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#include <ctime>
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#include <chrono>
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#include <GL/glut.h>
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static Ball* _ball = nullptr;
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static std::chrono::time_point<std::chrono::steady_clock>
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_last_time, _init_clocks;
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void init_periodic_static(Ball* ball) {
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_last_time = std::chrono::steady_clock::now();
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_init_clocks = std::chrono::steady_clock::now();
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_ball = ball;
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}
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double ellapsed_double(
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std::chrono::time_point<std::chrono::steady_clock> beg,
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std::chrono::time_point<std::chrono::steady_clock> end)
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{
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std::chrono::duration<double> ellapsed_db = end - beg;
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return ellapsed_db.count();
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}
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void periodic_update() {
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auto now = std::chrono::steady_clock::now();
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_ball->update_pos(ellapsed_double(_last_time, now));
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fprintf(stderr, "dt = %lf, tot = %lf; center: %.2lf, %.2lf, %.2lf\n",
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ellapsed_double(_last_time, now),
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ellapsed_double(_init_clocks, now),
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_ball->getCenter().x,
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_ball->getCenter().y,
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_ball->getCenter().z);
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_last_time = now;
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glutPostRedisplay();
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}
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