public void DrawCurve(Graphics g)
{
if (p4 == null)
{
double x = p1.X; double y = p1.Y;
Point2D oldPoint = p1;
for (double i = 0; i < 1; i += t)
{
_line.DrawLine(g, oldPoint, new Point2D((int)x, (int)y));
oldPoint = new Point2D((int)x, (int)y);
x = Math.Pow((1 - i), 2) * p1.X + 2 * i * (1 - i) * p2.X + Math.Pow(i, 2) * p3.X;
y = Math.Pow((1 - i), 2) * p1.Y + 2 * i * (1 - i) * p2.Y + Math.Pow(i, 2) * p3.Y;
}
}
else
{
double x = p1.X; double y = p1.Y;
Point2D oldPoint = p1;
for (double i = 0; i < 1; i += t)
{
_line.DrawLine(g, oldPoint, new Point2D((int)x, (int)y));
oldPoint = new Point2D((int)x, (int)y);
double v = Math.Pow(-i, 3) + 3 * Math.Pow(i, 2);
x = p1.X * (v - 3 * i + 1)
+ 3 * p2.X * i * (Math.Pow(i, 2) - 2 * i + 1)
+ 3 * p3.X * Math.Pow(i, 2) * (1 - i) + p4.X * Math.Pow(i, 3);
y = p1.Y * (v - 3 * i + 1)
+ 3 * p2.Y * i * (Math.Pow(i, 2) - 2 * i + 1)
+ 3 * p3.Y * Math.Pow(i, 2) * (1 - i) + p4.Y * Math.Pow(i, 3);
}
}
}
private void GoGraph(List <int> listOfPoints)
{
_myBitmap = new Bitmap(pictureBox1.Width, pictureBox1.Height);
_g = Graphics.FromImage(_myBitmap);
Graph gr = new Graph(10, pictureBox1.Width, pictureBox1.Height);
gr.CreateA(_g);
for (double x = -100; x < 100; x += 0.001)
{
Console.WriteLine("go x");
X = (int)(x * 10) + _width / 2;
if (listOfPoints != null)
{
for (int i = 0; i < listOfPoints.Count; i += 3)
{
Y += (int)(listOfPoints[i] * Math.Pow(x, listOfPoints[i + 1]))
+ listOfPoints[i + 2];
}
Y = _height / 2 - Y;
_line.DrawLine(_g, _oldPoint, new Point2D(X, Y));
_oldPoint = new Point2D(X, Y);
Y = 0;
}
}
pictureBox1.Image = _myBitmap;
}
private void button3_Click(object sender, EventArgs e)
{
_myBitmap = new Bitmap(pictureBox1.Width, pictureBox1.Height);
_g = Graphics.FromImage(_myBitmap);
WuLine wu = new WuLine();
Point2D p1 = new Point2D((double)numericUpDown1.Value, (double)numericUpDown2.Value);
Point2D p2 = new Point2D((double)numericUpDown3.Value, (double)numericUpDown4.Value);
wu.DrawLine(_g, p1, p2);
pictureBox1.Image = _myBitmap;
}
public void CreateA(Graphics g)
{
CreateAxis(g);
int unitSegmentLine = UnitSegment / 2;
for (int i = Height / 2 + unitSegmentLine; i < Height; i += UnitSegment)
{
_line.DrawLine(g, new Point2D(Width / 2 - unitSegmentLine / 2, i), new Point2D(Width / 2 + unitSegmentLine / 2, i));
}
for (int i = Width / 2 + unitSegmentLine; i < Width; i += UnitSegment)
{
_line.DrawLine(g, new Point2D(i, Height / 2 - unitSegmentLine / 2), new Point2D(i, Height / 2 + unitSegmentLine / 2));
}
for (int i = Height / 2 - unitSegmentLine; i >= 0; i -= UnitSegment)
{
_line.DrawLine(g, new Point2D(Width / 2 - unitSegmentLine / 2, i), new Point2D(Width / 2 + unitSegmentLine / 2, i));
}
for (int i = Width / 2 - unitSegmentLine; i >= 0; i -= UnitSegment)
{
_line.DrawLine(g, new Point2D(i, Height / 2 - unitSegmentLine / 2), new Point2D(i, Height / 2 + unitSegmentLine / 2));
}
}