package grav;

import java.awt.*;

public class partic {
    
    double x, y, z, vx, vy, vz, distance, gravity;
    int tcolor;
    
    public partic(double x, double y, double z, double vx, double vy, double vz) {
        this.x = x;
        this.y = y;
        this.z = z;
        this.vx = vx;
        this.vy = vy;
        this.vz = vz;
    }
    
    public void calc(gwell g){
        distance = Math.sqrt((x-g.x)*(x-g.x) + (y-g.y)*(y-g.y) + (z-g.z)*(z-g.z));
        gravity = g.g / distance / distance;
        vx += gravity * (g.x-x);
        vy += gravity * (g.y-y);
        vz += gravity * (g.z-z);
        x += vx;
        y += vy;
        z += vz;
    }
    
    
    public void display(Graphics gg){
        tcolor = (int)(distance/2.5);
        gg.setColor(col.ccheck(tcolor));
        gg.drawLine((int)x, (int)y, (int)x, (int)y);
    }
}