public static complexnumber multiply(complexnumber z1, complexnumber z2)
{
complexnumber z3 = new complexnumber(0, 0);
// (a + bi)(c + di) = ac - bd + i(ad + bc);
z3.real = z1.real * z2.real - z1.imag * z2.imag;
z3.imag = z1.real * z2.imag + z1.imag * z2.real;
return(z3);
}
public Form1()
{
InitializeComponent();
textBox3.Visible = cbShowErrors.Checked;
z1 = new complexnumber(0, 0);
z3 = new complexnumber(1, 0);
DoubleBuffered = true;
fillWhite(pictureBox1);
drawStuff(true);
fillColor(pictureBox2, System.Drawing.Color.White);
}
private void drawPoint(PictureBox p, NumericUpDown nud, complexnumber z, System.Drawing.Color c, bool clear)
{
int blob = 2;
Bitmap b;
if (clear)
{
b = new Bitmap(p.Width, p.Height);
}
else
{
b = new Bitmap(p.Image);
}
Graphics g = Graphics.FromImage(b);
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
Pen graph = new Pen(System.Drawing.Color.Black);
Brush zbrush = new SolidBrush(c);
Point zp = getCoord(z.getReal(), z.getImag(), p, nud);
Point lefttop = getCoord(0, 1, p, nud);
Point ninetybottom = getCoord(Math.PI / 2, -1, p, nud);
Point oneeightybottom = getCoord(Math.PI, -1, p, nud);
Point twoseventybottom = getCoord(3 * Math.PI / 2, -1, p, nud);
Point rightzero = getCoord(Math.PI * 2, 0, p, nud);
Point rightbottom = getCoord(Math.PI * 2, -1, p, nud);
Size outersize = new Size(rightbottom.X - lefttop.X, rightbottom.Y - lefttop.Y);
Size zerosize = new Size(rightzero.X - lefttop.X, rightzero.Y - lefttop.Y);
Size ninetysize = new Size(ninetybottom.X - lefttop.X, ninetybottom.Y - lefttop.Y);
Size oneeightysize = new Size(oneeightybottom.X - lefttop.X, oneeightybottom.Y - lefttop.Y);
Size twoseventysize = new Size(twoseventybottom.X - lefttop.X, twoseventybottom.Y - lefttop.Y);
Rectangle outer = new Rectangle(lefttop, outersize);
Rectangle zero = new Rectangle(lefttop, zerosize);
Rectangle ninety = new Rectangle(lefttop, ninetysize);
Rectangle oneeighty = new Rectangle(lefttop, oneeightysize);
Rectangle twoseventy = new Rectangle(lefttop, twoseventysize);
g.DrawRectangle(graph, outer);
g.DrawRectangle(graph, zero);
g.DrawRectangle(graph, ninety);
g.DrawRectangle(graph, oneeighty);
g.DrawRectangle(graph, twoseventy);
g.FillEllipse(zbrush, zp.X - blob, zp.Y - blob, blob * 2, blob * 2);
p.Image = b;
p.Refresh();
}
private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
{
try
{
int pbw = pictureBox1.Width;
int pbh = pictureBox1.Height;
if (onGraph(e.X, e.Y, pictureBox1))
{
if (e.Button.ToString() == "Left, Right")
{
z3 = resolvePoint(e.X, e.Y, pictureBox1, maxmodud);
if (Math.Abs(z3.getModulus() - Math.Round(z3.getModulus())) < 0.1)
{
z3 = new complexnumber(Math.Round(z3.getModulus()), 0);
}
if (cbDrawArcs.Checked)
{
cbDrawArcs.Checked = false;
}
else
{
drawStuff(true);
}
}
else
{
if (e.Button == MouseButtons.Left)
{
z1 = resolvePoint(e.X, e.Y, pictureBox1, maxmodud);
drawStuff(true);
}
}
return;
}
else
{
return;
}
}
catch (Exception eee)
{
if (cbShowErrors.Checked)
{
spam("001", eee);
}
return;
}
}
private void btnTheta_Click(object sender, EventArgs e)
{
double mytheta;
if (rbAnglesDegrees.Checked)
{
mytheta = (double)thetaUd.Value * (Math.PI / 180);
}
else
{
mytheta = (double)(thetaUd.Value);
}
z1 = new complexnumber(mytheta, 1, true);
drawStuff(true);
}
public complexnumber resolvePoint(int x, int y, PictureBox p, NumericUpDown nud, int trans)
{
complexnumber result = new complexnumber(0, 0);
double real = (x - p.Width / 2) / getDotsPerUnit(p, nud);
if (Math.Abs(real - (int)(real)) < 0.0001)
{
real = (int)(real);
}
double imag = ((p.Height / 2 - y) + trans) / getDotsPerUnit(p, nud);
if (Math.Abs(imag - (int)(imag)) < 0.0001)
{
imag = (int)(imag);
}
result = new complexnumber(real, imag);
return(result);
}
