TeX Art Fun - Mandalas

Question

I can't help but feel we need more fun coding contests here on TeX.SX, and since these seemed to do well in the past (e.g. TeX-mas, Groundhog Day) I thought I'd try my hand at putting together one of my own. Maybe it can even become a regular thing?

The Contest

Your mission, should you choose to accept it, is to create a mandala using nothing but TeX. The design is entirely up to you - any theme you like (if any), as simple or as complex as you like, and it can be coloured or monochrome. For examples of what I mean by mandala, click here.

Rules

• Entry must be made using nothing but TeX and derived languages, packages, etc. No outside graphics (but things like tikzlings and tikzsymbols are fine).
• Post both the image and your code, so we can see what you did.
• You can enter as many times as you like.
• Contest ends 11:59pm GMT, July 12th, 2019.
• Winner is whichever valid entry receives the most upvotes by the end of the contest.
• Have fun! :)

Prizes

• Bragging rights.
• Optional: You get to host the next TeX coding contest in this series.
• Something else? Suggestions?

I look forward to seeing all your creative entries! :)

Winners

Congratulations to @Mark Wibrow for his very clever and beautiful mandala, which was the clear winner after receiving the most votes by far. You have received the bounty, as well as being selected as the chosen answer. If you like, you can also put together a fun contest of your own, or perhaps choose someone to take on the honour instead.

Thank you everyone who submitted an entry to this contest. I loved seeing all your creative and unique designs and clever code. For anyone who wanted to have a go at this but were unable to get an entry in in time, please feel free to submit one anyway, whenever you like. It'll just be for fun, not to win, but I'll always be keen to see what wonderful things you guys can come up with.

Happy coding!

Answer 1

One colossal fading...

\documentclass[tikz,border=5]{standalone}
\usetikzlibrary{fadings}
\begin{tikzfadingfrompicture}[name=mandela]
\tikzset{%
  filled/.style={%
    fill=pgftransparent,
    draw=pgftransparent!0,
  },
  line join=round,
  doubled/.style={
    double=pgftransparent,
    double distance=#1,
  }, 
  doubled/.default=1.5}
\foreach \i in {0,2,...,15}{
  \tikzset{shift=(360/16*\i:4)}
  \foreach \j in {0,...,19}
    \path[filled,doubled] (360/19*\j:1) circle [radius=1/6];
  \path [filled,doubled] circle [radius=1];
  \foreach \j in {0,...,23}
    \path[filled,doubled] (360/24*\j:6/8) circle [radius=1/16];
}
\foreach \i in {1,3,...,15}{
  \tikzset{shift=(360/16*\i:3), rotate=360/16*\i+90, scale=-1}
  \path [discard] (1,0) arc (315:450:1/2) arc (315:450:1/3) arc (315:360:1/4)
    coordinate (a);
  \path [filled, doubled] 
    (-1,0) arc (225:90:1/2) arc (225:90:1/3) arc (225:180:1/4)
    .. controls ++(90:1/4) and ++(260:1/4) ..(0,5/2) 
    .. controls ++(280:1/4) and ++(90:1/4) .. (a)
    arc (360:315:1/4) arc (450:315:1/3) arc(450:315:1/2);
  \foreach \j in {0,1,-1,2,-2,3,-3}
    \path [filled, doubled, shift=(270:1/3),rotate=90+10*\j]
      (0,0) .. controls ++(1/8,0) and ++(-1/8,0) .. ({1.5-abs(\j/3)},-1/8)
      arc (270:450:1/8) -- cycle;
}
\foreach \i in {0,1}{
  \foreach \j [evaluate={\k=360/8*(\i+\j);}] in {0,2,...,7}{
    \tikzset{shift=(\k:2), rotate=\k+90, scale=-1}
    \path [discard] (1,0) arc (315:450:1/2) arc (315:360:1/3)
      coordinate (a);
    \path [filled, doubled] 
      (-1,0) arc (225:90:1/2) arc (225:180:1/3)
      .. controls ++(90:1/4) and ++(260:1/4) ..(0,9/4) 
      .. controls ++(280:1/4) and ++(90:1/4) .. (a)
      arc (360:315:1/3) arc(450:315:1/2);
    \foreach \k in {0,1,-1}
      \path [filled, doubled, rotate=90+10*\k]
        (1/2,0) .. controls ++(1/8,0) and ++(-1/8,0) .. ({1.5-abs(\k/3)},-1/8)
         arc (270:450:1/8) -- cycle;
  }
}
\foreach \i in {0,2,...,15}{
  \tikzset{shift=(360/16*\i:2)}
  \foreach \j in {0,...,19}
    \path [filled,doubled] (360/19*\j:3/4) circle [radius=1/8];
  \path [filled,doubled] circle [radius=3/4];
  \path [filled,doubled] circle [radius=1/2];
  \path [filled,doubled] circle [radius=1/4];
}
\path [filled, doubled] circle [radius=9/4];
\foreach \i in {0,2,...,31}
  \path[filled,doubled] (360/32*\i:6/4) circle [radius=1/3];
\foreach \i in {0,1}{
 \foreach \j [evaluate={\k=360/16*(\i+\j);}] in {0,2,...,15}{
   \tikzset{shift=(\k:1), rotate=\k+90, scale=-1}
   \path [filled, doubled]
     (-1/4, 0) 
     .. controls ++(135:1/2) and ++(260:1/2) .. (0,7/8)
     .. controls ++(280:1/2) and ++(45:1/2)  .. (1/4,0);
  \path [filled, doubled]
    (0,0) .. controls ++(135:1/8) and ++(270:1/8) ..
    (-1/8,1/3) arc (180:0:1/8) .. controls ++(270:1/8) and ++(45:1/8) .. cycle;
  }
}
\path [filled, doubled] circle [radius=5/4];
\foreach \i in {0,1}
  \foreach \j in {0,1,...,11}
    \path [filled, doubled, rotate=90+30*\j+\i*15]
      (0,0) .. controls ++(1/8,0) and ++(-1/8,0) .. (7/8,-1/8)
       arc (270:450:1/8) -- cycle;     
\path [filled, doubled] circle [radius=3/4];
\foreach \i in {0,1}{
 \foreach \j [evaluate={\k=360/6*(\i+\j);}] in {0,2,...,5}{
   \tikzset{shift=(\k:1/4), rotate=\k+90, scale=-1}
   \path [filled, doubled]
     (-1/8, 0) 
     .. controls ++(135:1/8) and ++(250:1/8) .. (0,1/4)
     .. controls ++(290:1/8) and ++(45:1/8)  .. (1/8,0);
  }
}
\path [filled, doubled] circle [radius=1/4];
\end{tikzfadingfrompicture}
\pgfdeclareradialshading{mandela}{\pgfpointorigin}{%
  color(0cm)=(yellow);
  color(0.2cm)=(red);
  color(0.4cm)=(purple);
  color(0.6cm)=(blue);
  color(0.8cm)=(cyan);
  color(1cm)=(cyan)}
\begin{document}
\begin{tikzpicture}
\shade [shading=mandela, path fading=mandela, fit fading=false]
  (-6,-6) rectangle (6,6);
\end{tikzpicture}
\end{document}

Answer 2

This is a very quickly written proposal to get the party started.

\documentclass[tikz,border=3.14mm]{standalone}
\begin{document}
\begin{tikzpicture}[pics/leaf/.style={code={
 \pgfgettransformentries{\myxx}{\myxy}{\myyx}{\myyy}{\tmp}{\tmp}
 \pgfmathsetmacro{\myscale}{sqrt(\myxx*\myyy-\myxy*\myyx)}
 \draw[line width=\myscale*1pt,pic actions] (-0.1,0) to[out=80,in=-80] (0,0.5)
 to[out=100,in=-90] (-0.5,1) to[out=90,in=-80] (-0.03,2) -- (0,2)
 to[out=-80,in=90] (0.5,1) to[out=-90,in=80] (0.1,0.5)
 to[out=-100,in=95] (0.1,0) -- cycle;}}]
 \path foreach \Radius [count=\Cnt] in {4,2,1,0.5} 
 {foreach \Angle [evaluate=\Angle as \EffAngle using {\Angle-15*\Cnt}] 
 in {0,30,...,330} { (\EffAngle:\Radius) 
 pic[rotate=\EffAngle-90,scale=\Radius,fill=white]{leaf}}};
\end{tikzpicture}
\end{document}

Or at the special request of a small marmot.

\documentclass[tikz,border=3.14mm]{standalone}
\usetikzlibrary{shadings}
\begin{document}
\begin{tikzpicture}[pics/leaf/.style={code={
 \pgfgettransformentries{\myxx}{\myxy}{\myyx}{\myyy}{\tmp}{\tmp}
 \pgfmathsetmacro{\myscale}{sqrt(\myxx*\myyy-\myxy*\myyx)}
 \begin{scope}[line width=\myscale*1pt]
 \draw[clip] (-0.1,0) to[out=80,in=-80] (0,0.5)
 to[out=100,in=-90] (-0.5,1) to[out=90,in=-80] (-0.03,2) -- (0,2)
 to[out=-80,in=90] (0.5,1) to[out=-90,in=80] (0.1,0.5)
 to[out=-100,in=95] (0.1,0) -- cycle;
 \shade[shading=color wheel] (O) circle[radius=12cm];
 \end{scope}}}]
 \path (0,0) coordinate (O);
 \path foreach \Radius [count=\Cnt] in {4,2,1,0.5} 
 {foreach \Angle [evaluate=\Angle as \EffAngle using {\Angle-15*\Cnt}] 
 in {0,30,...,330} { (\EffAngle:\Radius) 
 pic[rotate=\EffAngle-90,scale=\Radius,fill=white]{leaf}}};
\end{tikzpicture}
\end{document}

\documentclass[tikz,border=3.14mm]{standalone}
\usetikzlibrary{shadings}
\begin{document}
\begin{tikzpicture}[pics/leaf/.style={code={
 \pgfgettransformentries{\myxx}{\myxy}{\myyx}{\myyy}{\tmp}{\tmp}
 \pgfmathsetmacro{\myscale}{sqrt(\myxx*\myyy-\myxy*\myyx)}
 \begin{scope}[line width=\myscale*1pt]
 \draw[clip] (-0.1,0) to[out=80,in=-80] (0,0.5)
 to[out=100,in=-90] (-0.5,1) to[out=90,in=-80] (-0.03,2) -- (0,2)
 to[out=-80,in=90] (0.5,1) to[out=-90,in=80] (0.1,0.5)
 to[out=-100,in=95] (0.1,0) -- cycle;
 \shade[#1,shading=color wheel] (O) circle[radius=12cm];
 \end{scope}}}]
 \path (0,0) coordinate (O);
 \path foreach \Radius [count=\Cnt] in {4,2,1,0.5} 
 {foreach \Angle [evaluate=\Angle as \EffAngle using {\Angle-15*\Cnt}] 
 in {0,30,...,330} { (\EffAngle:\Radius) 
 pic[rotate=\EffAngle-90,scale=\Radius,fill=white]{leaf={transform canvas={rotate=-pi*\EffAngle}}}}};
\end{tikzpicture}
\end{document}

Answer 3

Here is a suggestion, using knots and springs from the nice fiziko library for MetaPost by @sergey-slyusarev. Compile with context.

\startMPpage[offset=3bp]
\input fiziko;
u:=2cm;
path p[];
p[0] = function(2,"(4+3cos(5x))*cos(x)","(4+3cos(5x))*sin(x)",epsed(0),epsed(2pi),1/50) .. cycle;

p[1] := p[0] scaled u;
p[2] := p[1] rotated 24;
p[3] := p[2] rotated 24;
p[4] := fullcircle scaled 13u;
p[5] := fullcircle scaled 8u;
p[6] := fullcircle scaled 3u;

springwidth:=1/10u;
for i=1 upto 15:
draw spring(origin,(u-1/8cm,0) rotated (24i-12),5) withpen pencircle scaled 0.5;
endfor;

addStrandToKnot (flowerouter) (p1, 1/8cm, "e", "1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1");
addStrandToKnot (flowerouter) (p2, 1/8cm, "e", "1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1");
addStrandToKnot (flowerouter) (p3, 1/8cm, "e", "1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1");
addStrandToKnot (flowerouter) (p4, 1/2cm, "e", "");
addStrandToKnot (flowerouter) (p5, 1/2cm, "e", "");
addStrandToKnot (flowerouter) (p6, 1/2cm, "e", "");
draw knotFromStrands (flowerouter);
\stopMPpage

Answer 4

Q&D L3 implementation to create mandalas from single objects:

% the mandala won't take more space than a `.', so we have to choose big borders
\documentclass[border=10cm]{standalone}

\usepackage{ducksay} % loads xparse
\ExplSyntaxOn
\NewDocumentCommand \MandalaNewObject { o m +m }
  {
    \coffin_if_exist:cF { g__mandala_ #2 _coffin }
      { \coffin_new:c { g__mandala_ #2 _coffin } }
    \IfNoValueTF { #1 }
      { \hcoffin_gset:cn { g__mandala_ #2 _coffin } }
      { \vcoffin_gset:cnn { g__mandala_ #2 _coffin } { #1 } }
      { #3 }
    \ignorespaces
  }
\coffin_new:N \l__mandala_tmpa_coffin
\coffin_new:N \g__mandala_output_coffin
\hcoffin_gset:Nn \g__mandala_output_coffin { . }
\fp_new:N \l__mandala_angle_fp
\dim_new:N \l__mandala_x_dim
\dim_new:N \l__mandala_y_dim
\NewDocumentCommand \MandalaPlaceObject { m m o m s O{0} m }
  {
    % #1 object name
    % #2 scale
    % #3 rotation of individual objects
    % #4 radius
    % #5 offset rotation in opposite direction
    % #6 degrees offset
    % #7 count
    \coffin_set_eq:Nc \l__mandala_tmpa_coffin { g__mandala_ #1 _coffin }
    \coffin_scale:Nnn \l__mandala_tmpa_coffin { #2 } { #2 }
    \IfValueT { #3 } { \coffin_rotate:Nn \l__mandala_tmpa_coffin { #3 } }
    \IfBooleanTF { #5 }
      { \coffin_rotate:Nn \l__mandala_tmpa_coffin { #6 } }
      { \coffin_rotate:Nn \l__mandala_tmpa_coffin { -1 * ( #6 ) } }
    \fp_set:Nn \l__mandala_angle_fp { 360 / #7 }
    \int_step_inline:nn { #7 }
      {
        \dim_set:Nn \l__mandala_x_dim
          {
            \fp_eval:n
              { ( #4 ) * sind ( ( ##1 - 1 ) * \l__mandala_angle_fp + ( #6 ) ) }
            pt
          }
        \dim_set:Nn \l__mandala_y_dim
          {
            \fp_eval:n
              { ( #4 ) * cosd ( ( ##1 - 1 ) * \l__mandala_angle_fp + ( #6 ) ) }
            pt
          }
        \coffin_attach:NnnNnnnn
          \g__mandala_output_coffin { hc } { vc }
          \l__mandala_tmpa_coffin   { hc } { vc }
          { \l__mandala_x_dim } { \l__mandala_y_dim }
        \coffin_rotate:Nn \l__mandala_tmpa_coffin { -\l__mandala_angle_fp }
      }
    \ignorespaces
  }
\NewDocumentCommand \MandalaOutput {}
  {
    \coffin_typeset:Nnnnn \g__mandala_output_coffin { l } { b } { 0pt } { 0pt }
  }
\ExplSyntaxOff

\DucksayOptions{vpad=1}

\begin{document}
\MandalaNewObject{duck}{\ducksay{This is a mandala}}
\MandalaNewObject{dog}{\ducksay[dog]{Woof}}
\MandalaNewObject{crusader}{\ducksay[crusader]{deus vult!}}
\MandalaNewObject{small-duck}{\ducksay[small-duck]{Quack}}
\MandalaNewObject{LaTeX}{\LaTeX}
\MandalaNewObject{texsx}{TeX.SX}
\MandalaPlaceObject{duck}{1}[22.5]{7cm}{8}
\MandalaPlaceObject{dog}{.5}{3cm}{8}
\MandalaPlaceObject{crusader}{.7}{7cm}*[-22.5]{8}
\MandalaPlaceObject{small-duck}{.3}{1cm}{8}
\MandalaPlaceObject{LaTeX}{.7}[45]{2cm}[11.25]{8}
\MandalaPlaceObject{LaTeX}{.7}[-45]{2cm}[-11.25]{8}
\MandalaPlaceObject{texsx}{1}{5cm}[22.5]{8}
\MandalaOutput
\end{document}

Answer 5

According to wikipedia Mandala (मण्डल) literally means circle, and in its purest form is "a square with four gates containing a circle with a center point. Each gate is in the general shape of a T".

Such a thing clearly should not be obfuscated with extraneous bling and tikzness, and should be set using the core latex format with no packages.

\documentclass{article}
\begin{document}
\begin{picture}(40,40)
\put(00,00){\framebox(40,40){}}\put(20,20){\circle{30}}
\put(20,20){\circle*{2}}            \linethickness{2pt}
\put(15,01){\line(1,0){10}}\put(20,00){\line(00,01){4}}
\put(15,39){\line(1,0){10}}\put(20,40){\line(00,-1){4}}
\put(01,15){\line(0,1){10}}\put(00,20){\line(01,00){4}}
\put(39,15){\line(0,1){10}}\put(40,20){\line(-1,00){4}}
\end{picture}
\end{document}

Answer 6

The question was How to draw the "sri-cakra" (sri-yantra") using Tikz?. I'm not sure if a "sri-cakra" could be considered as a mandala but in case it could. Here you have my answer there:

\documentclass[tikz,border=2mm]{standalone}

\usetikzlibrary{positioning, shapes.geometric, intersections,calc, backgrounds}

\begin{document}

\pgfdeclarelayer{minus1}
\pgfdeclarelayer{minus2}
\pgfdeclarelayer{minus3}
\pgfsetlayers{minus3,minus2,minus1,background,main}

\begin{tikzpicture}

%step-1
\draw[name path=circ, thick, fill=red!30] (0,0) circle (2.5cm);
\node[regular polygon, regular polygon sides=12, minimum size=5cm, shape border rotate=15] (p) {};

%\node [above] at (p.corner 1) {1};
%\node [above left] at (p.corner 2) {2};
\coordinate (1a) at (p.corner 7);

\path[name path=1--4] (p.corner 1)--(p.corner 4);
\path[name path=1--10] (p.corner 1)--(p.corner 10);
\path[name path=7--11] (p.corner 7)--(p.corner 11);
\path[name path=7--3] (p.corner 7)--(p.corner 3);

\path[name intersections={of=1--4 and 7--3, by=aux1}];
\path[name intersections={of=1--10 and 7--11, by=aux2}];

\path[name path=aux1--aux2] ([xshift=-2cm]aux1)--([xshift=2cm]aux2);

\path[name intersections={of=aux1--aux2 and circ, by={1b,1c}}];

\draw[thick, name path=tri1](1a)--(1b)-- coordinate[midway](5a) (1c)--cycle;

%step-2
\coordinate (2a) at (p.corner 1);

\path[name path=1--9] (p.corner 1)--(p.corner 9);
\path[name path=1--5] (p.corner 1)--(p.corner 5);
\path[name path=7--10] (p.corner 7)--(p.corner 10);
\path[name path=7--4] (p.corner 7)--(p.corner 4);

\path[name intersections={of=1--5 and 7--4, by=aux1}];
\path[name intersections={of=1--9 and 7--10, by=aux2}];

\path[name path=aux1--aux2] ([xshift=-2cm]aux1)--([xshift=2cm]aux2);

\path[name intersections={of=aux1--aux2 and circ, by={2b,2c}}];

\draw[thick, name path=tri2](2a)--(2b)--coordinate[midway](9a) (2c)--cycle;

%steps-3 and 4

\coordinate (S1) at (135:2.5cm);
\coordinate (S2) at (45:2.5cm);
\coordinate (S3) at (-45:2.5cm);
\coordinate (S4) at (-135:2.5cm);

\path[name path=rect] (S1)-- coordinate[midway](4a) (S2) -- (S3)--coordinate[midway](3a) (S4)--cycle; 

\path [name intersections={of=tri1 and tri2, by={*4,x,*1,*2,x,*3}}];

\path [name path=3a--*1] (3a)--($(3a)!1.5!(*1)$);
\path [name intersections={of=rect and 3a--*1, by={x,3b}}];

\path [name path=3a--*2] (3a)--($(3a)!1.5!(*2)$);
\path [name intersections={of=rect and 3a--*2, by={3c}}];

\draw[name path=tri3,thick] (3a)--(3b)--coordinate[midway](6a) (3c)--cycle;

\path [name path=4a--*3] (4a)--($(4a)!1.5!(*3)$);
\path [name intersections={of=rect and 4a--*3, by={x,4b}}];

\path [name path=4a--*4] (4a)--($(4a)!1.5!(*4)$);
\path [name intersections={of=rect and 4a--*4, by={x,4c}}];

\draw[name path=tri4,thick] (4a)--(4b)--coordinate[midway](8a)(4c)--cycle;

%Step-5
\path [name intersections={of=tri3 and tri2, by={x,*5,x,x,*6,x}}];

\path [name intersections={of=tri1 and tri4, by={*8,x,x,x,x,*7}}];

\path [name path=5a--*7] (5a)--($(5a)!1.5!(*7)$);
\path [name intersections={of=rect and 5a--*7, by=5b}];

\path [name path=5a--*8] (5a)--($(5a)!1.5!(*8)$);
\path [name intersections={of=rect and 5a--*8, by=5c}];

\draw[name path=tri5,thick] (5a)--(5b)--(5c)--cycle;

%%Step-6
\path [name path=*1--*4] (*1)--(*4);
\path [name path=*2--*3] (*2)--(*3);

\path  [name intersections={of=tri3 and *1--*4, by=6c}];
\path  [name intersections={of=tri3 and *2--*3, by={6b,x}}];

\draw[name path=tri6,thick] (6a)--(6b)-- coordinate[midway](7a) (6c)--cycle;

%Step-7

\path [name intersections={of=tri2 and tri3, by={x,*1,x,x,*3,x}}];
\path [name intersections={of=tri1 and tri4, by={x,x,*2,*4,x,x}}];

\path [name path=*1--*2] (7a)--($(7a)!1.5!(*1)$);
\path [name intersections={of=rect and *1--*2, by=7b}];

\path [name path=*3--*4] (7a)--($(7a)!1.5!(*3)$);
\path [name intersections={of=rect and *3--*4, by=7c}];

\draw[name path=tri7,thick] (7a)--(7b)-- (7c)--cycle;

%Step-8

\path [name intersections={of=tri6 and tri7, by={*1,x,*2}}];
\path [name path=*1--*2] ($(*2)!1.5!(*1)$)--($(*1)!1.5!(*2)$);
\path [name intersections={of=tri4 and *1--*2, by={8b,8c}}];

\draw[name path=tri8,thick] (8a)--(8b)-- (8c)--cycle;

%Step-9

\path [name intersections={of=tri5 and tri7, by={*1,*2}}];
\path [name path=*1--*2] ($(*2)!2.5!(*1)$)--($(*1)!2.5!(*2)$);
\path [name intersections={of=tri6 and *1--*2, by={9b,9c}}];

\draw[name path=tri9,thick] (9a)--(9b)-- (9c)--cycle;

\fill[blue!30, even odd rule] (1a)--(1b)--(1c)--cycle (2a)--(2b)--(2c)--cycle (3a)--(3b)--(3c)--cycle (4a)--(4b)--(4c)--cycle (5a)--(5b)--(5c)--cycle (6a)--(6b)--(6c)--cycle (7a)--(7b)--(7c)--cycle (8a)--(8b)--(8c)--cycle (9a)--(9b)--(9c)--cycle;

%Step-10

\draw[fill=red!30] (barycentric cs:*1=1,*2=1,9a=1) circle (2pt);

%Step-11

\begin{scope}[on background layer]
\draw [fill=green] circle (3cm);

\foreach \i [evaluate=\i as \start using 22.5+45*\i] in {0,...,7}
    \draw[fill=blue!30] (\start:2.5) to[out=10, in=170, relative] ({\start-22.5}:3) to [out=10, in=170, relative] ({\start-45}:2.5) arc [start angle={\start-45}, delta angle=45, radius=2.5cm]--cycle;
\end{scope}

%Step-12

\begin{pgfonlayer}{minus1}
\draw [fill=red] circle (3.5cm);

\foreach \i [evaluate=\i as \start using 11.25+22.5*\i] in {0,...,15}
    \draw[fill=blue!30] (\start:3) to[out=10, in=170, relative] ({\start-11.25}:3.5) to [out=10, in=170, relative] ({\start-22.5}:3) arc [start angle={\start-11.25}, delta angle=22.5, radius=3.5cm]--cycle;
\end{pgfonlayer}

%Step-13

\begin{pgfonlayer}{minus2}
\draw [fill=blue!39] circle (4cm);
\draw [line width=2mm, blue!70!black] circle (3.75cm);
\end{pgfonlayer}

%Step-14

\begin{pgfonlayer}{minus3}
\node [fill=yellow, minimum size=8.25cm] (b) {}; 
\node [fill=yellow, minimum width=9.5cm, minimum height=3cm] (bh) {}; 
\node [fill=yellow, minimum height=9.5cm, minimum width=3cm] (bv) {}; 
\node [fill=yellow, minimum height=8mm, minimum width=6cm] at (bv.north) (bn) {}; 
\node [fill=yellow, minimum height=8mm, minimum width=6cm] at (bv.south) (bs) {}; 
\node [fill=yellow, minimum width=8mm, minimum height=6cm] at (bh.west) (bw) {}; 
\node [fill=yellow, minimum width=8mm, minimum height=6cm] at (bh.east) (be) {}; 
\draw [brown!60!black,line width=1mm]% 
(be.south west)-|(be.north east)-|(bh.north-|be.west)-|(b.north east)-|(bv.east|-bn.south)-|(bn.north east)-|(bn.south west)-|(b.north-|bv.west)-|(b.west|-bh.north)-|(bw.north east)-|(bw.south west)-|(bw.east|-bh.south)-|(b.south west)-|(bv.west|-bs.north)-|(bs.south west)-|(bs.north east)-|(bv.east|-b.south)-|(b.east|-bh.south)-|cycle;

\end{pgfonlayer}

\end{tikzpicture}

\end{document}

And with little changes (see https://tex.stackexchange.com/a/271991/1952) to steps 11 and 12 you could get