IERG3080_GroupProject

For reference:

public struct Planet
{
    public double x;      // position x
    public double y;      // position y
    public double mass;   // the mass
    public double radius; // the radius (radius ^3 ~ mass)
    public double v_x;    // the velocity along x_axis
    public double v_y;    // the velocity along y_axis
    public int color;     // 0: purple, 1: red
}

Movement.cs (宋伊菲)

Assumption in Movement.cs:

The sun is at (0.0, 0.0).

mass_sun >> mass_planet

Functions of Movement.cs:

SplitEject:

input: planet (struct), position of mouse click (double), time of clicking (double)
output: void (update the two velocity, planet radius and mass in the Planet struct)

FindEllipticOrbit (oval orbit):

input: planet (struct)
output: the new distance from the sun (stable orbit)

FindCircleOrbit (oval orbit):

input: planet (struct)
output: the new radius of the orbit (stable orbit)

最终ddl 12.29