File:Mandelbrot Set Image 02 by Aokoroko.jpg

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Summary

Description
Русский: Участок множества Мандельброта. Координаты центра:-1.7433419053321, 0.0000907687489, ширина 0.00000000374
English: The piece of Mandelbrot set. Coordinates:-1.7433419053321, 0.0000907687489, width 0.00000000374
Date
Source Own work
Author Aokoroko

Source code

Practically I use the application written by me in FASM language because of the speed advantages. But for your better understanding I have rewrote it in Pascal language. This code can be compiled with Delphi or with Free Pascal. The application produces the image of any reasonable given width and height.

P.S. I apologize for so many values in q:array[0..255]of byte but they are necessary for my palette design.

{$APPTYPE CONSOLE}
{$N+}
{Author: https://commons.wikimedia.org/wiki/User:Aokoroko}

const
absc=-1.7433419053321; ordi=0.0000907687489; size=0.00000000374;
q:array[0..255]of byte=(117,172,209,145,64,95,149,223,155,65,178,142,224,92,93,
159,199,116,52,178,214,192,230,47,198,68,75,179,0,8,220,51,69,171,81,41,95,108,
20,121,18,215,15,75,234,94,198,83,178,216,183,78,41,84,119,63,211,71,123,38,
223,73,197,249,126,227,211,5,36,36,128,5,151,2,198,166,197,181,142,52,174,151,
244,164,255,62,173,75,21,197,126,225,130,146,244,175,86,1,180,253,198,191,50,36,
233,200,150,221,176,73,23,161,71,224,41,69,139,245,44,40,68,45,147,127,73,39,
156,189,191,20,19,15,27,203,206,97,156,111,189,126,87,209,209,36,23,17,15,49,
172,58,146,65,93,214,80,80,168,177,231,81,122,75,196,189,141,185,105,138,152,
225,171,28,120,103,29,13,140,172,20,235,214,174,237,70,179,188,127,169,40,58,
242,93,32,252,78,13,26,221,141,178,25,171,4,79,231,137,83,113,230,88,90,124,18,
217,194,46,236,126,32,228,103,53,206,150,28,159,237,138,83,114,58,47,176,254,
161,177,138,24,191,38,59,225,182,112,250,39,10,47,2,96,101,93,21,116,129,255);

var
f:file;
horiz,vert,a,b,t,i,j,l:longint;
c,d,cc,dd,m,n,mm,nn,step,absc2,ordi2:extended;
s:array[0..30000]of array[0..2]of byte;
z:array[0..2]of longint;
pal:array[0..255]of array[0..2]of byte;
h:array[0..13]of longint=($4D42,0,0,54,40,0,0,$180001,0,0,2834,2834,0,0);


begin
  write('Width: '); readln(horiz); write('Height: '); readln(vert);
  h[5]:=horiz; h[6]:=vert;
  a:=horiz*3; if (a and 3<>0) then a:=(a+4) and $FFFFFFFC; h[9]:=a*vert; h[1]:=h[9]+54;
  assign(f,'Mandelbrot02.bmp'); rewrite(f,1);
  blockwrite(f,h,2); blockwrite(f,h[1],52);
  for a:=0 to 254 do
  begin
    pal[a][0]:=round(127+127*cos(2*pi*(a+227)/255)); pal[a][1]:=round(127+127*sin(2*pi*(a+227)/255)); pal[a][2]:=q[a]
  end;
  for a:=0 to 2 do pal[255][a]:=255;
  step:=size/(horiz shl 3);
  absc2:=absc-step*(horiz shl 3-1)/2; ordi2:=ordi-step*(vert shl 3-1)/2;
  for b:=0 to vert-1 do
  begin
    nn:=b shl 3;
    for a:=0 to horiz-1 do
    begin
      mm:=a shl 3;
      for l:=0 to 2 do z[l]:=0;
      for j:=0 to 7 do
      begin
        n:=ordi2+(nn+j)*step;
        for i:=0 to 7 do
        begin
          m:=absc2+(mm+i)*step;
          c:=m; d:=n; t:=4081;
          repeat cc:=c*c; dd:=d*d; d:=(c+c)*d+n; c:=cc-dd+m; dec(t) until (t=0) or (cc+dd>1000000.0);
          if (t=0) then t:=255 else t:=t mod 255;
          for l:=0 to 2 do z[l]:=z[l]+pal[t][l]
        end
      end;
      for l:=0 to 2 do s[a][l]:=z[l] shr 6
    end;
    blockwrite(f,s,h[9] div vert);
    write('Done: ',b+1,chr(13))
  end;
  close(f)
end.

Licensing

I, the copyright holder of this work, hereby publish it under the following license:
w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.

This image has been assessed using the Quality image guidelines and is considered a Quality image.

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21 June 2010

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Date/TimeThumbnailDimensionsUserComment
current06:49, 25 April 2017Thumbnail for version as of 06:49, 25 April 20173,840 × 3,840 (15.93 MB)AokorokoImprove resolution and quality
01:14, 1 February 2017Thumbnail for version as of 01:14, 1 February 20172,000 × 2,000 (5.55 MB)AokorokoUser created page with UploadWizard

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