public string test(float[] x, float[] y)
{
Library lib = new Library();
return lib.result(x, y);
}
/// Draws graph using input data.
private void draw()
{
float x0 = pictureBox.Size.Height / 2;
float y0 = pictureBox.Size.Width / 2;
float scale = trackBar.Value * 10;
float[] x = new float[4]
{
x0 + tryToConvert(pointAx.Text) * scale,
x0 + tryToConvert(pointBx.Text) * scale,
x0 + tryToConvert(pointCx.Text) * scale,
x0 + tryToConvert(pointDx.Text) * scale
};
float[] y = new float[4]
{
y0 - tryToConvert(pointAy.Text) * scale,
y0 - tryToConvert(pointBy.Text) * scale,
y0 - tryToConvert(pointCy.Text) * scale,
y0 - tryToConvert(pointDy.Text) * scale
};
if (error)
{
error = false;
pictureBox.Image = initImage;
}
else
{
Bitmap image = new Bitmap(pictureBox.Size.Height, pictureBox.Size.Width);
clear(image);
Graphics graph = Graphics.FromImage(image);
// draws axes
float t = 0;
graph.DrawLine(Pens.Black, x0, 0.0f, x0, pictureBox.Size.Height);
graph.DrawLine(Pens.Black, 0.0f, y0, pictureBox.Size.Width, y0);
while (t < pictureBox.Size.Height)
{
graph.DrawEllipse(Pens.Green, t + x0 - 1.5f, y0 - 1.5f, 3.0f, 3.0f);
graph.DrawEllipse(Pens.Green, -t + x0 - 1.5f, y0 - 1.5f, 3.0f, 3.0f);
graph.DrawEllipse(Pens.Green, x0 - 1.5f, y0 - t - 1.5f, 3.0f, 3.0f);
graph.DrawEllipse(Pens.Green, x0 - 1.5f, y0 + t - 1.5f, 3.0f, 3.0f);
t += scale;
}
// draws graph
graph.DrawLine(Pens.Red, x[0], y[0], x[1], y[1]);
graph.DrawLine(Pens.Red, x[1], y[1], x[2], y[2]);
graph.DrawLine(Pens.Red, x[2], y[2], x[3], y[3]);
graph.DrawLine(Pens.Red, x[3], y[3], x[0], y[0]);
graph.DrawEllipse(Pens.Red, x[0] - 2.0f, y[0] - 2.0f, 4.0f, 4.0f);
graph.DrawEllipse(Pens.Red, x[1] - 2.0f, y[1] - 2.0f, 4.0f, 4.0f);
graph.DrawEllipse(Pens.Red, x[2] - 2.0f, y[2] - 2.0f, 4.0f, 4.0f);
graph.DrawEllipse(Pens.Red, x[3] - 2.0f, y[3] - 2.0f, 4.0f, 4.0f);
pictureBox.CreateGraphics();
pictureBox.Image = image;
pictureBox.Refresh();
// refreshes result
Library lib = new Library();
resultTextBox.Text = lib.result(x, y);
}
}
