import codedraw.CodeDraw; import java.awt.*; /** * Simulates the formation of a massive solar system. */ public class Simulation4 { // gravitational constant public static final double G = 6.6743e-11; // one astronomical unit (AU) is the average distance of earth to the sun. public static final double AU = 150e9; // meters // one light year public static final double LY = 9.461e15; // meters // some further constants needed in the simulation public static final double SUN_MASS = 1.989e30; // kilograms public static final double SUN_RADIUS = 696340e3; // meters public static final double EARTH_MASS = 5.972e24; // kilograms public static final double EARTH_RADIUS = 6371e3; // meters // set some system parameters public static final double SECTION_SIZE = 10 * AU; // the size of the square region in space // all quantities are based on units of kilogram respectively second and meter. /** * The main simulation method using instances of other classes. */ public static void main(String[] args) { // simulation CodeDraw cd = new CodeDraw(); // create solar system with 12 bodies NamedBodyForcePair sun = new NamedBodyForcePair(SolSystem4.SUN); NamedBodyForcePair earth = new NamedBodyForcePair(SolSystem4.EARTH); NamedBodyForcePair moon = new NamedBodyForcePair(SolSystem4.MOON); NamedBodyForcePair mars = new NamedBodyForcePair(SolSystem4.MARS); NamedBodyForcePair deimos = new NamedBodyForcePair(SolSystem4.DEIMOS); NamedBodyForcePair phobos = new NamedBodyForcePair(SolSystem4.PHOBOS); NamedBodyForcePair mercury = new NamedBodyForcePair(SolSystem4.MERCURY); NamedBodyForcePair venus = new NamedBodyForcePair(SolSystem4.VENUS); NamedBodyForcePair vesta = new NamedBodyForcePair(SolSystem4.VESTA); NamedBodyForcePair pallas = new NamedBodyForcePair(SolSystem4.PALLAS); NamedBodyForcePair hygiea = new NamedBodyForcePair(SolSystem4.HYGIEA); NamedBodyForcePair ceres = new NamedBodyForcePair(SolSystem4.CERES); //TODO: implementation of this method according to 'Aufgabenblatt4.md'. } }