public Form1()
{
InitializeComponent();
var b = new Bitmap(pictureBox1.Width, pictureBox1.Height);
g = Graphics.FromImage(b);
pictureBox1.Image = b;
pyramid = new Pyramid(g, new Point(300, 300));
}
private void BorderCrossed(Pyramid p)
{
if (p.FlowRight && p.A.X >= pictureBox1.Width ||
!p.FlowRight && p.B.X <= 0)
{
p.MoveX *= -1;
}
if (p.FlowDown && p.C.Y >= pictureBox1.Height ||
!p.FlowDown && p.H.Y <= 0)
{
p.MoveY *= -1;
}
}