How to draw special tikz borders












3















I am trying to draw a diagram showing the action of soap on grease and dirt. Currently I have the following diagram:



enter image description here



I would like the shapes that surround the large orange-yellow blobs to be the same as the shapes that are free and not bound. The code is as follows:



documentclass[10pt,a4paper]{article}

usepackage[utf8]{inputenc}

usepackage{amsmath}

usepackage{amsfonts}

usepackage{amssymb}

usepackage{graphicx}

usepackage[left=0.00cm, right=0.00cm]{geometry}

usepackage{tikz}

usetikzlibrary{calc,decorations.pathreplacing,fadings}

newcommand{lipid}[3]{

    begin{scope}[xshift=#1cm,yshift=#2cm,rotate=#3]

        shadedraw[shading=radial,inner color=purple!40,outer color=purple!60!black] (0,0) circle (2.5pt);

        shade[shading=linear,top color=purple!60!black,bottom color=green!70!black] (-0.75pt,-2pt) rectangle (0.75pt,-12pt);

    end{scope}

}

begin{document}

pgfdeclaredecoration{lipidleaflet}{initial}

{

    % Place as many segments as possible along the path to decorate

    % the minimum distance between two segments is set to 7 pt.

    state{initial}[width=pgfdecoratedpathlength/floor(pgfdecoratedpathlength/7pt)]

    {

        pgfpathmoveto{pgfpoint{-0.75pt}{3pt}}

        pgfpathlineto{pgfpoint{-0.75pt}{-7pt}}

        pgfpathlineto{pgfpoint{0.75pt}{-7pt}}

        pgfpathlineto{pgfpoint{0.75pt}{3pt}}

        % Draw the head group

        pgfpathmoveto{pgfpoint{1pt}{0pt}}

        pgfpathcircle{pgfpoint{0pt}{5pt}}{2.5pt}

    }

    state{final}

    {

        pgfpathmoveto{pgfpointdecoratedpathlast}

    }

}

begin{tikzpicture}

    % BACKGROUND

    shadedraw[bottom color=cyan!10,top color=cyan!60!blue]  (-0.5,0) rectangle (11,7.5);

    draw[thick] (-0.5,0) -- (11,0);

    % LARGE MOLECULES

    shadedraw[shading=radial,inner color=yellow!20,outer color=orange!40] (0,1.5) .. controls (2,1.5) and (3,2) .. (4,2) .. controls (5,2) and (5.5,2) .. (5.5,1.5) .. controls (5.5,1) and (4.5,0.5) .. (4.5,0) -- (-0.5,0) -- (-0.5,1.5) -- cycle;

    shadedraw[shading=radial,inner color=yellow!20,outer color=orange!40] (7,3.5) .. controls (6.5,4) and (7.5,4.5) .. (8,5) .. controls (8.5,5.5) and (9,5.5) .. (9.5,5.5) .. controls (10,5.5) and (10.5,5) .. (10.5,4.5) .. controls (10.5,4) and (10.5,4) .. (10,3.5).. controls (9.5,3) and (9.5,3) .. (8.5,3) .. controls (8,3) and (7.5,3) .. (7,3.5);

    % BOUND LIPIDS

    draw[decorate, decoration={lipidleaflet}] (0,1.5) .. controls (2,1.5) and (3,2) .. (4,2) .. controls (5,2) and (5.5,2) .. (5.5,1.5) .. controls (5.5,1) and (4.5,0.5) .. (4.5,0);

    draw[decorate, decoration={lipidleaflet}]  (7,3.5) .. controls (6.5,4) and (7.5,4.5) .. (8,5) .. controls (8.5,5.5) and (9,5.5) .. (9.5,5.5) .. controls (10,5.5) and (10.5,5) .. (10.5,4.5) .. controls (10.5,4) and (10.5,4) .. (10,3.5).. controls (9.5,3) and (9.5,3) .. (8.5,3) .. controls (8,3) and (7.5,3) .. (7,3.5);

    % FREE LIPIDS

    lipid{1}{6}{20}

    lipid{5.5}{5.5}{193}

    lipid{0.5}{2.5}{201}

    lipid{3}{7}{118}

    lipid{2.5}{3.5}{217}

    lipid{3.5}{5}{346}

    lipid{5}{3.5}{26}

    lipid{6.5}{2.5}{310}

    lipid{6.5}{1}{123}

    lipid{9}{1}{353}

    % LABELLING

    node at (2,0.5) {Grease on Surface};

    node at (9,2.5) {Micelle};

    draw (8.7,4.3) -- (7.5,6) node[anchor=south,align=center] {Grease particle made\soluble by soap};

end{tikzpicture}

end{document}


Some of the code comes from http://www.texample.net/tikz/examples/lipid-vesicle/






tikz-pgf







share|improve this question



























    3















    I am trying to draw a diagram showing the action of soap on grease and dirt. Currently I have the following diagram:



    enter image description here



    I would like the shapes that surround the large orange-yellow blobs to be the same as the shapes that are free and not bound. The code is as follows:



    documentclass[10pt,a4paper]{article}
    
usepackage[utf8]{inputenc}
    
usepackage{amsmath}
    
usepackage{amsfonts}
    
usepackage{amssymb}
    
usepackage{graphicx}
    
usepackage[left=0.00cm, right=0.00cm]{geometry}
    
usepackage{tikz}
    
usetikzlibrary{calc,decorations.pathreplacing,fadings}
    
newcommand{lipid}[3]{
    
    begin{scope}[xshift=#1cm,yshift=#2cm,rotate=#3]
    
        shadedraw[shading=radial,inner color=purple!40,outer color=purple!60!black] (0,0) circle (2.5pt);
    
        shade[shading=linear,top color=purple!60!black,bottom color=green!70!black] (-0.75pt,-2pt) rectangle (0.75pt,-12pt);
    
    end{scope}
    
}
    
begin{document}
    
pgfdeclaredecoration{lipidleaflet}{initial}
    
{
    
    % Place as many segments as possible along the path to decorate
    
    % the minimum distance between two segments is set to 7 pt.
    
    state{initial}[width=pgfdecoratedpathlength/floor(pgfdecoratedpathlength/7pt)]
    
    {
    
        pgfpathmoveto{pgfpoint{-0.75pt}{3pt}}
    
        pgfpathlineto{pgfpoint{-0.75pt}{-7pt}}
    
        pgfpathlineto{pgfpoint{0.75pt}{-7pt}}
    
        pgfpathlineto{pgfpoint{0.75pt}{3pt}}
    
        % Draw the head group
    
        pgfpathmoveto{pgfpoint{1pt}{0pt}}
    
        pgfpathcircle{pgfpoint{0pt}{5pt}}{2.5pt}
    
    }
    
    state{final}
    
    {
    
        pgfpathmoveto{pgfpointdecoratedpathlast}
    
    }
    
}
    
begin{tikzpicture}
    
    % BACKGROUND
    
    shadedraw[bottom color=cyan!10,top color=cyan!60!blue]  (-0.5,0) rectangle (11,7.5);
    
    draw[thick] (-0.5,0) -- (11,0);
    
    % LARGE MOLECULES
    
    shadedraw[shading=radial,inner color=yellow!20,outer color=orange!40] (0,1.5) .. controls (2,1.5) and (3,2) .. (4,2) .. controls (5,2) and (5.5,2) .. (5.5,1.5) .. controls (5.5,1) and (4.5,0.5) .. (4.5,0) -- (-0.5,0) -- (-0.5,1.5) -- cycle;
    
    shadedraw[shading=radial,inner color=yellow!20,outer color=orange!40] (7,3.5) .. controls (6.5,4) and (7.5,4.5) .. (8,5) .. controls (8.5,5.5) and (9,5.5) .. (9.5,5.5) .. controls (10,5.5) and (10.5,5) .. (10.5,4.5) .. controls (10.5,4) and (10.5,4) .. (10,3.5).. controls (9.5,3) and (9.5,3) .. (8.5,3) .. controls (8,3) and (7.5,3) .. (7,3.5);
    
    % BOUND LIPIDS
    
    draw[decorate, decoration={lipidleaflet}] (0,1.5) .. controls (2,1.5) and (3,2) .. (4,2) .. controls (5,2) and (5.5,2) .. (5.5,1.5) .. controls (5.5,1) and (4.5,0.5) .. (4.5,0);
    
    draw[decorate, decoration={lipidleaflet}]  (7,3.5) .. controls (6.5,4) and (7.5,4.5) .. (8,5) .. controls (8.5,5.5) and (9,5.5) .. (9.5,5.5) .. controls (10,5.5) and (10.5,5) .. (10.5,4.5) .. controls (10.5,4) and (10.5,4) .. (10,3.5).. controls (9.5,3) and (9.5,3) .. (8.5,3) .. controls (8,3) and (7.5,3) .. (7,3.5);
    
    % FREE LIPIDS
    
    lipid{1}{6}{20}
    
    lipid{5.5}{5.5}{193}
    
    lipid{0.5}{2.5}{201}
    
    lipid{3}{7}{118}
    
    lipid{2.5}{3.5}{217}
    
    lipid{3.5}{5}{346}
    
    lipid{5}{3.5}{26}
    
    lipid{6.5}{2.5}{310}
    
    lipid{6.5}{1}{123}
    
    lipid{9}{1}{353}
    
    % LABELLING
    
    node at (2,0.5) {Grease on Surface};
    
    node at (9,2.5) {Micelle};
    
    draw (8.7,4.3) -- (7.5,6) node[anchor=south,align=center] {Grease particle made\soluble by soap};
    
end{tikzpicture}
    
end{document}


    Some of the code comes from http://www.texample.net/tikz/examples/lipid-vesicle/






    tikz-pgf







    share|improve this question

























      3












      3








      3








      I am trying to draw a diagram showing the action of soap on grease and dirt. Currently I have the following diagram:



      enter image description here



      I would like the shapes that surround the large orange-yellow blobs to be the same as the shapes that are free and not bound. The code is as follows:



      documentclass[10pt,a4paper]{article}
      
usepackage[utf8]{inputenc}
      
usepackage{amsmath}
      
usepackage{amsfonts}
      
usepackage{amssymb}
      
usepackage{graphicx}
      
usepackage[left=0.00cm, right=0.00cm]{geometry}
      
usepackage{tikz}
      
usetikzlibrary{calc,decorations.pathreplacing,fadings}
      
newcommand{lipid}[3]{
      
    begin{scope}[xshift=#1cm,yshift=#2cm,rotate=#3]
      
        shadedraw[shading=radial,inner color=purple!40,outer color=purple!60!black] (0,0) circle (2.5pt);
      
        shade[shading=linear,top color=purple!60!black,bottom color=green!70!black] (-0.75pt,-2pt) rectangle (0.75pt,-12pt);
      
    end{scope}
      
}
      
begin{document}
      
pgfdeclaredecoration{lipidleaflet}{initial}
      
{
      
    % Place as many segments as possible along the path to decorate
      
    % the minimum distance between two segments is set to 7 pt.
      
    state{initial}[width=pgfdecoratedpathlength/floor(pgfdecoratedpathlength/7pt)]
      
    {
      
        pgfpathmoveto{pgfpoint{-0.75pt}{3pt}}
      
        pgfpathlineto{pgfpoint{-0.75pt}{-7pt}}
      
        pgfpathlineto{pgfpoint{0.75pt}{-7pt}}
      
        pgfpathlineto{pgfpoint{0.75pt}{3pt}}
      
        % Draw the head group
      
        pgfpathmoveto{pgfpoint{1pt}{0pt}}
      
        pgfpathcircle{pgfpoint{0pt}{5pt}}{2.5pt}
      
    }
      
    state{final}
      
    {
      
        pgfpathmoveto{pgfpointdecoratedpathlast}
      
    }
      
}
      
begin{tikzpicture}
      
    % BACKGROUND
      
    shadedraw[bottom color=cyan!10,top color=cyan!60!blue]  (-0.5,0) rectangle (11,7.5);
      
    draw[thick] (-0.5,0) -- (11,0);
      
    % LARGE MOLECULES
      
    shadedraw[shading=radial,inner color=yellow!20,outer color=orange!40] (0,1.5) .. controls (2,1.5) and (3,2) .. (4,2) .. controls (5,2) and (5.5,2) .. (5.5,1.5) .. controls (5.5,1) and (4.5,0.5) .. (4.5,0) -- (-0.5,0) -- (-0.5,1.5) -- cycle;
      
    shadedraw[shading=radial,inner color=yellow!20,outer color=orange!40] (7,3.5) .. controls (6.5,4) and (7.5,4.5) .. (8,5) .. controls (8.5,5.5) and (9,5.5) .. (9.5,5.5) .. controls (10,5.5) and (10.5,5) .. (10.5,4.5) .. controls (10.5,4) and (10.5,4) .. (10,3.5).. controls (9.5,3) and (9.5,3) .. (8.5,3) .. controls (8,3) and (7.5,3) .. (7,3.5);
      
    % BOUND LIPIDS
      
    draw[decorate, decoration={lipidleaflet}] (0,1.5) .. controls (2,1.5) and (3,2) .. (4,2) .. controls (5,2) and (5.5,2) .. (5.5,1.5) .. controls (5.5,1) and (4.5,0.5) .. (4.5,0);
      
    draw[decorate, decoration={lipidleaflet}]  (7,3.5) .. controls (6.5,4) and (7.5,4.5) .. (8,5) .. controls (8.5,5.5) and (9,5.5) .. (9.5,5.5) .. controls (10,5.5) and (10.5,5) .. (10.5,4.5) .. controls (10.5,4) and (10.5,4) .. (10,3.5).. controls (9.5,3) and (9.5,3) .. (8.5,3) .. controls (8,3) and (7.5,3) .. (7,3.5);
      
    % FREE LIPIDS
      
    lipid{1}{6}{20}
      
    lipid{5.5}{5.5}{193}
      
    lipid{0.5}{2.5}{201}
      
    lipid{3}{7}{118}
      
    lipid{2.5}{3.5}{217}
      
    lipid{3.5}{5}{346}
      
    lipid{5}{3.5}{26}
      
    lipid{6.5}{2.5}{310}
      
    lipid{6.5}{1}{123}
      
    lipid{9}{1}{353}
      
    % LABELLING
      
    node at (2,0.5) {Grease on Surface};
      
    node at (9,2.5) {Micelle};
      
    draw (8.7,4.3) -- (7.5,6) node[anchor=south,align=center] {Grease particle made\soluble by soap};
      
end{tikzpicture}
      
end{document}


      Some of the code comes from http://www.texample.net/tikz/examples/lipid-vesicle/






      tikz-pgf







      share|improve this question














      I am trying to draw a diagram showing the action of soap on grease and dirt. Currently I have the following diagram:



      enter image description here



      I would like the shapes that surround the large orange-yellow blobs to be the same as the shapes that are free and not bound. The code is as follows:



      documentclass[10pt,a4paper]{article}
      
usepackage[utf8]{inputenc}
      
usepackage{amsmath}
      
usepackage{amsfonts}
      
usepackage{amssymb}
      
usepackage{graphicx}
      
usepackage[left=0.00cm, right=0.00cm]{geometry}
      
usepackage{tikz}
      
usetikzlibrary{calc,decorations.pathreplacing,fadings}
      
newcommand{lipid}[3]{
      
    begin{scope}[xshift=#1cm,yshift=#2cm,rotate=#3]
      
        shadedraw[shading=radial,inner color=purple!40,outer color=purple!60!black] (0,0) circle (2.5pt);
      
        shade[shading=linear,top color=purple!60!black,bottom color=green!70!black] (-0.75pt,-2pt) rectangle (0.75pt,-12pt);
      
    end{scope}
      
}
      
begin{document}
      
pgfdeclaredecoration{lipidleaflet}{initial}
      
{
      
    % Place as many segments as possible along the path to decorate
      
    % the minimum distance between two segments is set to 7 pt.
      
    state{initial}[width=pgfdecoratedpathlength/floor(pgfdecoratedpathlength/7pt)]
      
    {
      
        pgfpathmoveto{pgfpoint{-0.75pt}{3pt}}
      
        pgfpathlineto{pgfpoint{-0.75pt}{-7pt}}
      
        pgfpathlineto{pgfpoint{0.75pt}{-7pt}}
      
        pgfpathlineto{pgfpoint{0.75pt}{3pt}}
      
        % Draw the head group
      
        pgfpathmoveto{pgfpoint{1pt}{0pt}}
      
        pgfpathcircle{pgfpoint{0pt}{5pt}}{2.5pt}
      
    }
      
    state{final}
      
    {
      
        pgfpathmoveto{pgfpointdecoratedpathlast}
      
    }
      
}
      
begin{tikzpicture}
      
    % BACKGROUND
      
    shadedraw[bottom color=cyan!10,top color=cyan!60!blue]  (-0.5,0) rectangle (11,7.5);
      
    draw[thick] (-0.5,0) -- (11,0);
      
    % LARGE MOLECULES
      
    shadedraw[shading=radial,inner color=yellow!20,outer color=orange!40] (0,1.5) .. controls (2,1.5) and (3,2) .. (4,2) .. controls (5,2) and (5.5,2) .. (5.5,1.5) .. controls (5.5,1) and (4.5,0.5) .. (4.5,0) -- (-0.5,0) -- (-0.5,1.5) -- cycle;
      
    shadedraw[shading=radial,inner color=yellow!20,outer color=orange!40] (7,3.5) .. controls (6.5,4) and (7.5,4.5) .. (8,5) .. controls (8.5,5.5) and (9,5.5) .. (9.5,5.5) .. controls (10,5.5) and (10.5,5) .. (10.5,4.5) .. controls (10.5,4) and (10.5,4) .. (10,3.5).. controls (9.5,3) and (9.5,3) .. (8.5,3) .. controls (8,3) and (7.5,3) .. (7,3.5);
      
    % BOUND LIPIDS
      
    draw[decorate, decoration={lipidleaflet}] (0,1.5) .. controls (2,1.5) and (3,2) .. (4,2) .. controls (5,2) and (5.5,2) .. (5.5,1.5) .. controls (5.5,1) and (4.5,0.5) .. (4.5,0);
      
    draw[decorate, decoration={lipidleaflet}]  (7,3.5) .. controls (6.5,4) and (7.5,4.5) .. (8,5) .. controls (8.5,5.5) and (9,5.5) .. (9.5,5.5) .. controls (10,5.5) and (10.5,5) .. (10.5,4.5) .. controls (10.5,4) and (10.5,4) .. (10,3.5).. controls (9.5,3) and (9.5,3) .. (8.5,3) .. controls (8,3) and (7.5,3) .. (7,3.5);
      
    % FREE LIPIDS
      
    lipid{1}{6}{20}
      
    lipid{5.5}{5.5}{193}
      
    lipid{0.5}{2.5}{201}
      
    lipid{3}{7}{118}
      
    lipid{2.5}{3.5}{217}
      
    lipid{3.5}{5}{346}
      
    lipid{5}{3.5}{26}
      
    lipid{6.5}{2.5}{310}
      
    lipid{6.5}{1}{123}
      
    lipid{9}{1}{353}
      
    % LABELLING
      
    node at (2,0.5) {Grease on Surface};
      
    node at (9,2.5) {Micelle};
      
    draw (8.7,4.3) -- (7.5,6) node[anchor=south,align=center] {Grease particle made\soluble by soap};
      
end{tikzpicture}
      
end{document}


      Some of the code comes from http://www.texample.net/tikz/examples/lipid-vesicle/






      tikz-pgf




      tikz-pgf






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Jan 21 at 1:46









      sab hoquesab hoque

      1,524318




      1,524318






















          1 Answer
          1






          active

          oldest

          votes


















          5














          Ok, I made some refinements:




          1. Use pics for the lipids.

          2. Adjust their shading angle to make the shading uniform. The shading angle is computed based on the actual orientation of the lipids.

          3. Lifted the lipids up. To change the lift, change 2mm in path pic[midway,sloped,yshift=2mm] {lipid};

          4. Cleaned up a bit.




          documentclass[10pt,a4paper]{article}
          
usepackage[utf8]{inputenc}
          
usepackage{amsmath}
          
usepackage{amsfonts}
          
usepackage{amssymb}
          
usepackage[left=0.00cm, right=0.00cm]{geometry}
          
usepackage{tikz}
          
usetikzlibrary{calc,fadings,decorations.markings}
          

          
tikzset{pics/.cd,
          
lipid/.style={code={
          
shadedraw[shading=radial,inner color=purple!40,outer color=purple!60!black] (0,0) circle (2.5pt);
          
shade let p1=($(1,0)-(0,0)$),n1={atan2(y1,x1)},
          
p2=($(current bounding box.east)-(current bounding box.west)$),n2={n1-atan2(y2,x2)}
          
 in %{pgfextra{typeout{n2}}}
          
 [shading=linear,top color=purple!60!black,bottom color=green!70!black,
          
shading angle=n2] (-0.75pt,-2pt) rectangle (0.75pt,-12pt);
          
}}}
          

          
begin{document}
          
begin{tikzpicture}[multi lipid/.style={decoration={markings,
          
mark=between positions 0 and 1 step #1 with {%
          
begin{scope}
          
path  pic[midway,sloped,yshift=2mm] {lipid};
          
end{scope}}
          
}}]
          
    % BACKGROUND
          
    shadedraw[bottom color=cyan!10,top color=cyan!60!blue]  (-0.5,0) rectangle (11,7.5);
          
    draw[thick] (-0.5,0) -- (11,0);
          
    % LARGE MOLECULES
          
    shadedraw[shading=radial,inner color=yellow!20,outer color=orange!40] (0,1.5) .. controls (2,1.5) and (3,2) .. (4,2) .. controls (5,2) and (5.5,2) .. (5.5,1.5) .. controls (5.5,1) and (4.5,0.5) .. (4.5,0) -- (-0.5,0) -- (-0.5,1.5) -- cycle;
          
    shadedraw[shading=radial,inner color=yellow!20,outer color=orange!40] (7,3.5) .. controls (6.5,4) and (7.5,4.5) .. (8,5) .. controls (8.5,5.5) and (9,5.5) .. (9.5,5.5) .. controls (10,5.5) and (10.5,5) .. (10.5,4.5) .. controls (10.5,4) and (10.5,4) .. (10,3.5).. controls (9.5,3) and (9.5,3) .. (8.5,3) .. controls (8,3) and (7.5,3) .. (7,3.5);
          
    % BOUND LIPIDS
          
    draw[decorate,multi lipid=4.2mm] (0,1.5) .. controls (2,1.5) and (3,2) .. (4,2) .. controls (5,2) and (5.5,2) .. (5.5,1.5) .. controls (5.5,1) and (4.5,0.5) .. (4.5,0);
          
    draw[decorate,multi lipid=4.2mm]  (7,3.5) .. controls (6.5,4) and (7.5,4.5) .. (8,5) .. controls (8.5,5.5) and (9,5.5) .. (9.5,5.5) .. controls (10,5.5) and (10.5,5) .. (10.5,4.5) .. controls (10.5,4) and (10.5,4) .. (10,3.5).. controls (9.5,3) and (9.5,3) .. (8.5,3) .. controls (8,3) and (7.5,3) .. (7,3.5);
          
    % FREE LIPIDS
          
    path (1,6) pic[rotate=20]{lipid}
          
    (5.5,5.5) pic[rotate=193]{lipid}
          
    (0.5,2.5) pic[rotate=201]{lipid}
          
    (3,7) pic[rotate=118]{lipid}
          
    (2.5,3.5) pic[rotate=217]{lipid}
          
    (3.5,5) pic[rotate=346]{lipid}
          
    (5,3.5) pic[rotate=26]{lipid}
          
    (6.5,2.5) pic[rotate=310]{lipid}
          
    (6.5,1) pic[rotate=123]{lipid}
          
    (9,1) pic[rotate=353]{lipid};
          
    % LABELLING
          
    node at (2,0.5) {Grease on Surface};
          
    node at (9,2.5) {Micelle};
          
    draw (8.7,4.3) -- (7.5,6) node[anchor=south,align=center] {Grease particle made\soluble by soap};
          
end{tikzpicture}
          
end{document}


          enter image description here






          share|improve this answer


























          • Mainly a fixed distance. Also on another note, if you look at the picture in the original image from the question, the lipids stick out more, but I think I can do that myself. Thanks so much

            – sab hoque
            Jan 21 at 3:01











          • There appears to be one issue that I have only come across now, the shading on the green-purple region changes with the orientation of the lipid. Is it possible to make it a fixed gradient such that it is always purple at the end near the circle and green at the tail. I would like to apply this to all the lipids (including the free ones)

            – sab hoque
            Jan 21 at 3:03








          • 1





            @sabhoque Yes. I updated the thingy. (The shading of the purple region is radial, I think, so it is invariant under rotations.)

            – marmot
            Jan 21 at 3:25











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          Ok, I made some refinements:




          1. Use pics for the lipids.

          2. Adjust their shading angle to make the shading uniform. The shading angle is computed based on the actual orientation of the lipids.

          3. Lifted the lipids up. To change the lift, change 2mm in path pic[midway,sloped,yshift=2mm] {lipid};

          4. Cleaned up a bit.




          documentclass[10pt,a4paper]{article}
          
usepackage[utf8]{inputenc}
          
usepackage{amsmath}
          
usepackage{amsfonts}
          
usepackage{amssymb}
          
usepackage[left=0.00cm, right=0.00cm]{geometry}
          
usepackage{tikz}
          
usetikzlibrary{calc,fadings,decorations.markings}
          

          
tikzset{pics/.cd,
          
lipid/.style={code={
          
shadedraw[shading=radial,inner color=purple!40,outer color=purple!60!black] (0,0) circle (2.5pt);
          
shade let p1=($(1,0)-(0,0)$),n1={atan2(y1,x1)},
          
p2=($(current bounding box.east)-(current bounding box.west)$),n2={n1-atan2(y2,x2)}
          
 in %{pgfextra{typeout{n2}}}
          
 [shading=linear,top color=purple!60!black,bottom color=green!70!black,
          
shading angle=n2] (-0.75pt,-2pt) rectangle (0.75pt,-12pt);
          
}}}
          

          
begin{document}
          
begin{tikzpicture}[multi lipid/.style={decoration={markings,
          
mark=between positions 0 and 1 step #1 with {%
          
begin{scope}
          
path  pic[midway,sloped,yshift=2mm] {lipid};
          
end{scope}}
          
}}]
          
    % BACKGROUND
          
    shadedraw[bottom color=cyan!10,top color=cyan!60!blue]  (-0.5,0) rectangle (11,7.5);
          
    draw[thick] (-0.5,0) -- (11,0);
          
    % LARGE MOLECULES
          
    shadedraw[shading=radial,inner color=yellow!20,outer color=orange!40] (0,1.5) .. controls (2,1.5) and (3,2) .. (4,2) .. controls (5,2) and (5.5,2) .. (5.5,1.5) .. controls (5.5,1) and (4.5,0.5) .. (4.5,0) -- (-0.5,0) -- (-0.5,1.5) -- cycle;
          
    shadedraw[shading=radial,inner color=yellow!20,outer color=orange!40] (7,3.5) .. controls (6.5,4) and (7.5,4.5) .. (8,5) .. controls (8.5,5.5) and (9,5.5) .. (9.5,5.5) .. controls (10,5.5) and (10.5,5) .. (10.5,4.5) .. controls (10.5,4) and (10.5,4) .. (10,3.5).. controls (9.5,3) and (9.5,3) .. (8.5,3) .. controls (8,3) and (7.5,3) .. (7,3.5);
          
    % BOUND LIPIDS
          
    draw[decorate,multi lipid=4.2mm] (0,1.5) .. controls (2,1.5) and (3,2) .. (4,2) .. controls (5,2) and (5.5,2) .. (5.5,1.5) .. controls (5.5,1) and (4.5,0.5) .. (4.5,0);
          
    draw[decorate,multi lipid=4.2mm]  (7,3.5) .. controls (6.5,4) and (7.5,4.5) .. (8,5) .. controls (8.5,5.5) and (9,5.5) .. (9.5,5.5) .. controls (10,5.5) and (10.5,5) .. (10.5,4.5) .. controls (10.5,4) and (10.5,4) .. (10,3.5).. controls (9.5,3) and (9.5,3) .. (8.5,3) .. controls (8,3) and (7.5,3) .. (7,3.5);
          
    % FREE LIPIDS
          
    path (1,6) pic[rotate=20]{lipid}
          
    (5.5,5.5) pic[rotate=193]{lipid}
          
    (0.5,2.5) pic[rotate=201]{lipid}
          
    (3,7) pic[rotate=118]{lipid}
          
    (2.5,3.5) pic[rotate=217]{lipid}
          
    (3.5,5) pic[rotate=346]{lipid}
          
    (5,3.5) pic[rotate=26]{lipid}
          
    (6.5,2.5) pic[rotate=310]{lipid}
          
    (6.5,1) pic[rotate=123]{lipid}
          
    (9,1) pic[rotate=353]{lipid};
          
    % LABELLING
          
    node at (2,0.5) {Grease on Surface};
          
    node at (9,2.5) {Micelle};
          
    draw (8.7,4.3) -- (7.5,6) node[anchor=south,align=center] {Grease particle made\soluble by soap};
          
end{tikzpicture}
          
end{document}


          enter image description here






          share|improve this answer


























          • Mainly a fixed distance. Also on another note, if you look at the picture in the original image from the question, the lipids stick out more, but I think I can do that myself. Thanks so much

            – sab hoque
            Jan 21 at 3:01











          • There appears to be one issue that I have only come across now, the shading on the green-purple region changes with the orientation of the lipid. Is it possible to make it a fixed gradient such that it is always purple at the end near the circle and green at the tail. I would like to apply this to all the lipids (including the free ones)

            – sab hoque
            Jan 21 at 3:03








          • 1





            @sabhoque Yes. I updated the thingy. (The shading of the purple region is radial, I think, so it is invariant under rotations.)

            – marmot
            Jan 21 at 3:25
















          5














          Ok, I made some refinements:




          1. Use pics for the lipids.

          2. Adjust their shading angle to make the shading uniform. The shading angle is computed based on the actual orientation of the lipids.

          3. Lifted the lipids up. To change the lift, change 2mm in path pic[midway,sloped,yshift=2mm] {lipid};

          4. Cleaned up a bit.




          documentclass[10pt,a4paper]{article}
          
usepackage[utf8]{inputenc}
          
usepackage{amsmath}
          
usepackage{amsfonts}
          
usepackage{amssymb}
          
usepackage[left=0.00cm, right=0.00cm]{geometry}
          
usepackage{tikz}
          
usetikzlibrary{calc,fadings,decorations.markings}
          

          
tikzset{pics/.cd,
          
lipid/.style={code={
          
shadedraw[shading=radial,inner color=purple!40,outer color=purple!60!black] (0,0) circle (2.5pt);
          
shade let p1=($(1,0)-(0,0)$),n1={atan2(y1,x1)},
          
p2=($(current bounding box.east)-(current bounding box.west)$),n2={n1-atan2(y2,x2)}
          
 in %{pgfextra{typeout{n2}}}
          
 [shading=linear,top color=purple!60!black,bottom color=green!70!black,
          
shading angle=n2] (-0.75pt,-2pt) rectangle (0.75pt,-12pt);
          
}}}
          

          
begin{document}
          
begin{tikzpicture}[multi lipid/.style={decoration={markings,
          
mark=between positions 0 and 1 step #1 with {%
          
begin{scope}
          
path  pic[midway,sloped,yshift=2mm] {lipid};
          
end{scope}}
          
}}]
          
    % BACKGROUND
          
    shadedraw[bottom color=cyan!10,top color=cyan!60!blue]  (-0.5,0) rectangle (11,7.5);
          
    draw[thick] (-0.5,0) -- (11,0);
          
    % LARGE MOLECULES
          
    shadedraw[shading=radial,inner color=yellow!20,outer color=orange!40] (0,1.5) .. controls (2,1.5) and (3,2) .. (4,2) .. controls (5,2) and (5.5,2) .. (5.5,1.5) .. controls (5.5,1) and (4.5,0.5) .. (4.5,0) -- (-0.5,0) -- (-0.5,1.5) -- cycle;
          
    shadedraw[shading=radial,inner color=yellow!20,outer color=orange!40] (7,3.5) .. controls (6.5,4) and (7.5,4.5) .. (8,5) .. controls (8.5,5.5) and (9,5.5) .. (9.5,5.5) .. controls (10,5.5) and (10.5,5) .. (10.5,4.5) .. controls (10.5,4) and (10.5,4) .. (10,3.5).. controls (9.5,3) and (9.5,3) .. (8.5,3) .. controls (8,3) and (7.5,3) .. (7,3.5);
          
    % BOUND LIPIDS
          
    draw[decorate,multi lipid=4.2mm] (0,1.5) .. controls (2,1.5) and (3,2) .. (4,2) .. controls (5,2) and (5.5,2) .. (5.5,1.5) .. controls (5.5,1) and (4.5,0.5) .. (4.5,0);
          
    draw[decorate,multi lipid=4.2mm]  (7,3.5) .. controls (6.5,4) and (7.5,4.5) .. (8,5) .. controls (8.5,5.5) and (9,5.5) .. (9.5,5.5) .. controls (10,5.5) and (10.5,5) .. (10.5,4.5) .. controls (10.5,4) and (10.5,4) .. (10,3.5).. controls (9.5,3) and (9.5,3) .. (8.5,3) .. controls (8,3) and (7.5,3) .. (7,3.5);
          
    % FREE LIPIDS
          
    path (1,6) pic[rotate=20]{lipid}
          
    (5.5,5.5) pic[rotate=193]{lipid}
          
    (0.5,2.5) pic[rotate=201]{lipid}
          
    (3,7) pic[rotate=118]{lipid}
          
    (2.5,3.5) pic[rotate=217]{lipid}
          
    (3.5,5) pic[rotate=346]{lipid}
          
    (5,3.5) pic[rotate=26]{lipid}
          
    (6.5,2.5) pic[rotate=310]{lipid}
          
    (6.5,1) pic[rotate=123]{lipid}
          
    (9,1) pic[rotate=353]{lipid};
          
    % LABELLING
          
    node at (2,0.5) {Grease on Surface};
          
    node at (9,2.5) {Micelle};
          
    draw (8.7,4.3) -- (7.5,6) node[anchor=south,align=center] {Grease particle made\soluble by soap};
          
end{tikzpicture}
          
end{document}


          enter image description here






          share|improve this answer


























          • Mainly a fixed distance. Also on another note, if you look at the picture in the original image from the question, the lipids stick out more, but I think I can do that myself. Thanks so much

            – sab hoque
            Jan 21 at 3:01











          • There appears to be one issue that I have only come across now, the shading on the green-purple region changes with the orientation of the lipid. Is it possible to make it a fixed gradient such that it is always purple at the end near the circle and green at the tail. I would like to apply this to all the lipids (including the free ones)

            – sab hoque
            Jan 21 at 3:03








          • 1





            @sabhoque Yes. I updated the thingy. (The shading of the purple region is radial, I think, so it is invariant under rotations.)

            – marmot
            Jan 21 at 3:25














          5












          5








          5







          Ok, I made some refinements:




          1. Use pics for the lipids.

          2. Adjust their shading angle to make the shading uniform. The shading angle is computed based on the actual orientation of the lipids.

          3. Lifted the lipids up. To change the lift, change 2mm in path pic[midway,sloped,yshift=2mm] {lipid};

          4. Cleaned up a bit.




          documentclass[10pt,a4paper]{article}
          
usepackage[utf8]{inputenc}
          
usepackage{amsmath}
          
usepackage{amsfonts}
          
usepackage{amssymb}
          
usepackage[left=0.00cm, right=0.00cm]{geometry}
          
usepackage{tikz}
          
usetikzlibrary{calc,fadings,decorations.markings}
          

          
tikzset{pics/.cd,
          
lipid/.style={code={
          
shadedraw[shading=radial,inner color=purple!40,outer color=purple!60!black] (0,0) circle (2.5pt);
          
shade let p1=($(1,0)-(0,0)$),n1={atan2(y1,x1)},
          
p2=($(current bounding box.east)-(current bounding box.west)$),n2={n1-atan2(y2,x2)}
          
 in %{pgfextra{typeout{n2}}}
          
 [shading=linear,top color=purple!60!black,bottom color=green!70!black,
          
shading angle=n2] (-0.75pt,-2pt) rectangle (0.75pt,-12pt);
          
}}}
          

          
begin{document}
          
begin{tikzpicture}[multi lipid/.style={decoration={markings,
          
mark=between positions 0 and 1 step #1 with {%
          
begin{scope}
          
path  pic[midway,sloped,yshift=2mm] {lipid};
          
end{scope}}
          
}}]
          
    % BACKGROUND
          
    shadedraw[bottom color=cyan!10,top color=cyan!60!blue]  (-0.5,0) rectangle (11,7.5);
          
    draw[thick] (-0.5,0) -- (11,0);
          
    % LARGE MOLECULES
          
    shadedraw[shading=radial,inner color=yellow!20,outer color=orange!40] (0,1.5) .. controls (2,1.5) and (3,2) .. (4,2) .. controls (5,2) and (5.5,2) .. (5.5,1.5) .. controls (5.5,1) and (4.5,0.5) .. (4.5,0) -- (-0.5,0) -- (-0.5,1.5) -- cycle;
          
    shadedraw[shading=radial,inner color=yellow!20,outer color=orange!40] (7,3.5) .. controls (6.5,4) and (7.5,4.5) .. (8,5) .. controls (8.5,5.5) and (9,5.5) .. (9.5,5.5) .. controls (10,5.5) and (10.5,5) .. (10.5,4.5) .. controls (10.5,4) and (10.5,4) .. (10,3.5).. controls (9.5,3) and (9.5,3) .. (8.5,3) .. controls (8,3) and (7.5,3) .. (7,3.5);
          
    % BOUND LIPIDS
          
    draw[decorate,multi lipid=4.2mm] (0,1.5) .. controls (2,1.5) and (3,2) .. (4,2) .. controls (5,2) and (5.5,2) .. (5.5,1.5) .. controls (5.5,1) and (4.5,0.5) .. (4.5,0);
          
    draw[decorate,multi lipid=4.2mm]  (7,3.5) .. controls (6.5,4) and (7.5,4.5) .. (8,5) .. controls (8.5,5.5) and (9,5.5) .. (9.5,5.5) .. controls (10,5.5) and (10.5,5) .. (10.5,4.5) .. controls (10.5,4) and (10.5,4) .. (10,3.5).. controls (9.5,3) and (9.5,3) .. (8.5,3) .. controls (8,3) and (7.5,3) .. (7,3.5);
          
    % FREE LIPIDS
          
    path (1,6) pic[rotate=20]{lipid}
          
    (5.5,5.5) pic[rotate=193]{lipid}
          
    (0.5,2.5) pic[rotate=201]{lipid}
          
    (3,7) pic[rotate=118]{lipid}
          
    (2.5,3.5) pic[rotate=217]{lipid}
          
    (3.5,5) pic[rotate=346]{lipid}
          
    (5,3.5) pic[rotate=26]{lipid}
          
    (6.5,2.5) pic[rotate=310]{lipid}
          
    (6.5,1) pic[rotate=123]{lipid}
          
    (9,1) pic[rotate=353]{lipid};
          
    % LABELLING
          
    node at (2,0.5) {Grease on Surface};
          
    node at (9,2.5) {Micelle};
          
    draw (8.7,4.3) -- (7.5,6) node[anchor=south,align=center] {Grease particle made\soluble by soap};
          
end{tikzpicture}
          
end{document}


          enter image description here






          share|improve this answer















          Ok, I made some refinements:




          1. Use pics for the lipids.

          2. Adjust their shading angle to make the shading uniform. The shading angle is computed based on the actual orientation of the lipids.

          3. Lifted the lipids up. To change the lift, change 2mm in path pic[midway,sloped,yshift=2mm] {lipid};

          4. Cleaned up a bit.




          documentclass[10pt,a4paper]{article}
          
usepackage[utf8]{inputenc}
          
usepackage{amsmath}
          
usepackage{amsfonts}
          
usepackage{amssymb}
          
usepackage[left=0.00cm, right=0.00cm]{geometry}
          
usepackage{tikz}
          
usetikzlibrary{calc,fadings,decorations.markings}
          

          
tikzset{pics/.cd,
          
lipid/.style={code={
          
shadedraw[shading=radial,inner color=purple!40,outer color=purple!60!black] (0,0) circle (2.5pt);
          
shade let p1=($(1,0)-(0,0)$),n1={atan2(y1,x1)},
          
p2=($(current bounding box.east)-(current bounding box.west)$),n2={n1-atan2(y2,x2)}
          
 in %{pgfextra{typeout{n2}}}
          
 [shading=linear,top color=purple!60!black,bottom color=green!70!black,
          
shading angle=n2] (-0.75pt,-2pt) rectangle (0.75pt,-12pt);
          
}}}
          

          
begin{document}
          
begin{tikzpicture}[multi lipid/.style={decoration={markings,
          
mark=between positions 0 and 1 step #1 with {%
          
begin{scope}
          
path  pic[midway,sloped,yshift=2mm] {lipid};
          
end{scope}}
          
}}]
          
    % BACKGROUND
          
    shadedraw[bottom color=cyan!10,top color=cyan!60!blue]  (-0.5,0) rectangle (11,7.5);
          
    draw[thick] (-0.5,0) -- (11,0);
          
    % LARGE MOLECULES
          
    shadedraw[shading=radial,inner color=yellow!20,outer color=orange!40] (0,1.5) .. controls (2,1.5) and (3,2) .. (4,2) .. controls (5,2) and (5.5,2) .. (5.5,1.5) .. controls (5.5,1) and (4.5,0.5) .. (4.5,0) -- (-0.5,0) -- (-0.5,1.5) -- cycle;
          
    shadedraw[shading=radial,inner color=yellow!20,outer color=orange!40] (7,3.5) .. controls (6.5,4) and (7.5,4.5) .. (8,5) .. controls (8.5,5.5) and (9,5.5) .. (9.5,5.5) .. controls (10,5.5) and (10.5,5) .. (10.5,4.5) .. controls (10.5,4) and (10.5,4) .. (10,3.5).. controls (9.5,3) and (9.5,3) .. (8.5,3) .. controls (8,3) and (7.5,3) .. (7,3.5);
          
    % BOUND LIPIDS
          
    draw[decorate,multi lipid=4.2mm] (0,1.5) .. controls (2,1.5) and (3,2) .. (4,2) .. controls (5,2) and (5.5,2) .. (5.5,1.5) .. controls (5.5,1) and (4.5,0.5) .. (4.5,0);
          
    draw[decorate,multi lipid=4.2mm]  (7,3.5) .. controls (6.5,4) and (7.5,4.5) .. (8,5) .. controls (8.5,5.5) and (9,5.5) .. (9.5,5.5) .. controls (10,5.5) and (10.5,5) .. (10.5,4.5) .. controls (10.5,4) and (10.5,4) .. (10,3.5).. controls (9.5,3) and (9.5,3) .. (8.5,3) .. controls (8,3) and (7.5,3) .. (7,3.5);
          
    % FREE LIPIDS
          
    path (1,6) pic[rotate=20]{lipid}
          
    (5.5,5.5) pic[rotate=193]{lipid}
          
    (0.5,2.5) pic[rotate=201]{lipid}
          
    (3,7) pic[rotate=118]{lipid}
          
    (2.5,3.5) pic[rotate=217]{lipid}
          
    (3.5,5) pic[rotate=346]{lipid}
          
    (5,3.5) pic[rotate=26]{lipid}
          
    (6.5,2.5) pic[rotate=310]{lipid}
          
    (6.5,1) pic[rotate=123]{lipid}
          
    (9,1) pic[rotate=353]{lipid};
          
    % LABELLING
          
    node at (2,0.5) {Grease on Surface};
          
    node at (9,2.5) {Micelle};
          
    draw (8.7,4.3) -- (7.5,6) node[anchor=south,align=center] {Grease particle made\soluble by soap};
          
end{tikzpicture}
          
end{document}


          enter image description here







          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited Jan 21 at 3:23

























          answered Jan 21 at 2:47









          marmotmarmot

          106k5128242




          106k5128242













          • Mainly a fixed distance. Also on another note, if you look at the picture in the original image from the question, the lipids stick out more, but I think I can do that myself. Thanks so much

            – sab hoque
            Jan 21 at 3:01











          • There appears to be one issue that I have only come across now, the shading on the green-purple region changes with the orientation of the lipid. Is it possible to make it a fixed gradient such that it is always purple at the end near the circle and green at the tail. I would like to apply this to all the lipids (including the free ones)

            – sab hoque
            Jan 21 at 3:03








          • 1





            @sabhoque Yes. I updated the thingy. (The shading of the purple region is radial, I think, so it is invariant under rotations.)

            – marmot
            Jan 21 at 3:25



















          • Mainly a fixed distance. Also on another note, if you look at the picture in the original image from the question, the lipids stick out more, but I think I can do that myself. Thanks so much

            – sab hoque
            Jan 21 at 3:01











          • There appears to be one issue that I have only come across now, the shading on the green-purple region changes with the orientation of the lipid. Is it possible to make it a fixed gradient such that it is always purple at the end near the circle and green at the tail. I would like to apply this to all the lipids (including the free ones)

            – sab hoque
            Jan 21 at 3:03








          • 1





            @sabhoque Yes. I updated the thingy. (The shading of the purple region is radial, I think, so it is invariant under rotations.)

            – marmot
            Jan 21 at 3:25

















          Mainly a fixed distance. Also on another note, if you look at the picture in the original image from the question, the lipids stick out more, but I think I can do that myself. Thanks so much

          – sab hoque
          Jan 21 at 3:01





          Mainly a fixed distance. Also on another note, if you look at the picture in the original image from the question, the lipids stick out more, but I think I can do that myself. Thanks so much

          – sab hoque
          Jan 21 at 3:01













          There appears to be one issue that I have only come across now, the shading on the green-purple region changes with the orientation of the lipid. Is it possible to make it a fixed gradient such that it is always purple at the end near the circle and green at the tail. I would like to apply this to all the lipids (including the free ones)

          – sab hoque
          Jan 21 at 3:03







          There appears to be one issue that I have only come across now, the shading on the green-purple region changes with the orientation of the lipid. Is it possible to make it a fixed gradient such that it is always purple at the end near the circle and green at the tail. I would like to apply this to all the lipids (including the free ones)

          – sab hoque
          Jan 21 at 3:03






          1




          1





          @sabhoque Yes. I updated the thingy. (The shading of the purple region is radial, I think, so it is invariant under rotations.)

          – marmot
          Jan 21 at 3:25





          @sabhoque Yes. I updated the thingy. (The shading of the purple region is radial, I think, so it is invariant under rotations.)

          – marmot
          Jan 21 at 3:25


















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