64 lines
1.3 KiB
C++
64 lines
1.3 KiB
C++
#include "Ball.hpp"
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#include <iostream>
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#include <cmath>
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Ball::Ball(Point& _center, double _v_x, double _p, double _q) :
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Center(_center),
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surface(_center, _p, _q),
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init_h(_center.z),
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bounce_number(0),
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crt_time(0),
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A(_center.z),
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B(0),
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U(sqrt(2 * G_CTE * _center.z)),
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T(0),
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v_x(_v_x)
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{
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}
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void Ball::_compute_pos(double dt) {
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Center.z = A + B * crt_time - (G_CTE / 2) * crt_time * crt_time;
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Center.x += dt * v_x;
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surface.update_center_pos(Center);
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}
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void Ball::_compute_T_n() {
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double swap = T;
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T = swap + 2/G_CTE * pow(1/2, bounce_number - 2) * sqrt(2 * init_h / G_CTE);
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}
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void Ball::_compute_B_n() {
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B = G_CTE * T + U;
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}
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void Ball::_compute_A_n() {
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A = - G_CTE * T * T / 2 - (U * T);
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}
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void Ball::_compute_U_n() {
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U *= 1/2;
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}
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void Ball::_compute_v_x() {
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v_x *= 1/2;
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}
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void Ball::update_pos(double dt) {
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crt_time += dt;
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if (crt_time >= T) {
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_compute_T_n();
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_compute_U_n();
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_compute_A_n();
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_compute_B_n();
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_compute_v_x();
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}
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_compute_pos(dt);
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}
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std::ostream& operator<< (std::ostream &out, Ball const& data) {
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Point center = data.getCenter();
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out << center.x << ':';
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out << center.y << ':';
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out << center.z << '\n';
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return out;
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}
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