#include "poisson.h"
#include <qmath.h>
#include <QtOpenGL>
#include <random>
Poisson::Poisson(point3D p, point3D v)
{
    srand(0);
    position = p * drand48();// origine du monde
    vitesse = v ;//point3D((rand() % 10)/100.,(rand() % 3)/100.,(rand() % 10)/100.);// veteur null
    v_init = vitesse;
    distance = 0; // z&éros
}
void Poisson::anime( float temps ){
    if(vitesse == point3D(0.,0.,0.))
        vitesse = v_init;
    position = position + vitesse * temps;
}
bool Poisson::dans_voisinage( point3D p, double seuil){
    point3D m = p - position;
    distance = sqrtf(pow(m.x,2) +pow(m.z,2) + pow(m.z,2));
    return (distance > seuil ? false:true);
}
void Poisson::affiche(){
    glColor3d(1.,03,.6);
    glBegin(GL_TRIANGLE_STRIP);
        glVertex3d(position.x+.5, position.y, position.z);
        glVertex3d(position.x, position.y, position.z+1.);
        glVertex3d(position.x-.5, position.y, position.z);
    glEnd();
}