public static void draw_line(d2 point1, d2 point2, PictureBox p, Graphics g)
{
point1.x = point1.X * E1[0] + point1.Y * E2[0];
point1.y = point1.X * E1[1] + point1.Y * E2[1];
point2.x = point2.X * E1[0] + point2.Y * E2[0];
point2.y = point2.X * E1[1] + point2.Y * E2[1];
g.DrawLine(Pens.Black, (float)point1.x + p.Width / 2, (float)point1.y + p.Height / 2, (float)point2.x + p.Width / 2, (float)point2.y + p.Height / 2);
}
public static void draw_basis(PictureBox p, Graphics g)
{
d2 x = new d2(100 * E1[0], 100 * E1[1]);
d2 y = new d2(100 * E2[0], 100 * E2[1]);
d2 zero = new d2(0, 0);
draw_line_color(zero, x, p, g, Color.Red);
draw_line_color(zero, y, p, g, Color.Green);
}
static void draw_line_color(d2 point1, d2 point2, PictureBox p, Graphics g, Color col)
{
Pen pn = new Pen(col);
g.DrawLine(pn, (float)point1.X + p.Width / 2, (float)point1.Y + p.Height / 2, (float)point2.X + p.Width / 2, (float)point2.Y + p.Height / 2);
}
public static void draw_point(d2 point, PictureBox p, Graphics g)
{//отображение точки на пикчерБоксе
point.x = point.X * E1[0] + point.Y * E2[0];
point.y = point.X * E1[1] + point.Y * E2[1];
g.FillEllipse(Brushes.Black, (float)point.x + p.Width / 2, (float)point.y + p.Height / 2, point.Size, point.Size);
}