private void Draw()
{
graphics.Clear(Color.Black);
quadtree = new Quadtree(new Rectangle(winWidth / 2,
winHeight / 2,
winHeight / 2,
winWidth / 2),
4, graphics);
foreach (var particle in particles)
{
quadtree.InsertParticle(particle);
graphics.FillRectangle(Brushes.White, particle.position.X, particle.position.Y, 2f, 2f);
}
quadtree.Draw();
pictureBox1.Refresh();
}
private void Subdivide()
{
int x = boundary.x;
int y = boundary.y;
int w = boundary.width;
int h = boundary.height;
Rectangle nw = new Rectangle(x - w / 2, y - h / 2, h / 2, w / 2);
Rectangle ne = new Rectangle(x + w / 2, y - h / 2, h / 2, w / 2);
Rectangle sw = new Rectangle(x - w / 2, y + h / 2, h / 2, w / 2);
Rectangle se = new Rectangle(x + w / 2, y + h / 2, h / 2, w / 2);
QTnw = new Quadtree(nw, 4, graphics);
QTne = new Quadtree(ne, 4, graphics);
QTsw = new Quadtree(sw, 4, graphics);
QTse = new Quadtree(se, 4, graphics);
}