/// <summary>
/// Draws H-Fractal
/// </summary>
/// <param name="flag">refresh image on PictureBox?</param>
private void DrawHFractal(bool flag = true)
{
Console.WriteLine("H-fractal");
double width = this.picCanvas.Width;
double height = this.picCanvas.Height;
double maxLen = (double)Math.Min(picCanvas.Width, picCanvas.Height) / 2.1;
Console.WriteLine($"MaxLen is {maxLen}");
Point midPoint = new Point(width / 2, height / 2);
lastImage = new Bitmap((int)(width * Fractal.imageQualityFactor), (int)(height * Fractal.imageQualityFactor));
Console.WriteLine("MidPoint " + midPoint);
HFractal fractal = new HFractal(maxLen, startColor, endColor, (int)iterationsUpDown.Value);
fractal.Draw(lastImage, midPoint);
if (flag)
{
(picCanvas.Image)?.Dispose();
picCanvas.Image = lastImage;
}
}
/// <summary>
/// method for drawing H-Fractal on image
/// </summary>
/// <param name="image">image to draw on</param>
/// <param name="A">leftmost Point</param>
/// <param name="E">rightmost Point</param>
public override void Draw(Bitmap image, Point pt1, Point pt2 = null, int helper = 0)
{
if (MaxDepth == CurDepth)
{
return;
}
double curLen = StartLen / (Math.Pow(2, CurDepth));
/*
*
* C | |D
* A|____|B
* | |
* E | |F
*/
//pt1 -= offsetPoint;
Point A = new Point(pt1.X - curLen / 2, pt1.Y);
Point B = new Point(pt1.X + curLen / 2, pt1.Y);
Point C = new Point(A.X, A.Y + curLen / 2);
Point D = new Point(B.X, B.Y + curLen / 2);
Point E = new Point(A.X, A.Y - curLen / 2);
Point F = new Point(B.X, B.Y - curLen / 2);
Pen GradientPen = new Pen(Fractal.GetGradientColor(StartColor, EndColor, CurDepth, MaxDepth), (startThickness));
using (var graphics = Graphics.FromImage(image))
{
var offA = (A - offsetPoint) * imageQualityFactor;
var offB = (B - offsetPoint) * imageQualityFactor;
var offC = (C - offsetPoint) * imageQualityFactor;
var offD = (D - offsetPoint) * imageQualityFactor;
var offF = (F - offsetPoint) * imageQualityFactor;
var offE = (E - offsetPoint) * imageQualityFactor;
graphics.DrawLine(GradientPen, (float)offA.X, (float)offA.Y, (float)offE.X, (float)offE.Y);
graphics.DrawLine(GradientPen, (float)offA.X, (float)offA.Y, (float)offC.X, (float)offC.Y);
graphics.DrawLine(GradientPen, (float)offA.X, (float)offA.Y, (float)offB.X, (float)offB.Y);
graphics.DrawLine(GradientPen, (float)offB.X, (float)offB.Y, (float)offF.X, (float)offF.Y);
graphics.DrawLine(GradientPen, (float)offB.X, (float)offB.Y, (float)offD.X, (float)offD.Y);
}
Point[] arr = { C, E, D, F };
for (int i = 0; i < arr.Length; ++i)
{
HFractal nextStepFractal = new HFractal(StartLen, StartColor, EndColor, MaxDepth, CurDepth + 1);
nextStepFractal.Draw(image, arr[i]);
}
}