How to draw special tikz borders

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/

asked 3 hours ago

sab hoque

1,514318

add a comment |

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/

asked 3 hours ago

sab hoque

1,514318

add a comment |

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/

asked 3 hours ago

sab hoque

1,514318

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

asked 3 hours ago

sab hoque

1,514318

asked 3 hours ago

sab hoque

1,514318

asked 3 hours ago

sab hoque

1,514318

asked 3 hours ago

sab hoque

1,514318

asked 3 hours ago

sab hoque

1,514318

add a comment |

1 Answer
1

active

oldest

votes

Ok, I made some refinements:

Use pics for the lipids.

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

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

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

edited 1 hour ago

answered 2 hours ago

marmot

93.1k4109204

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
2 hours ago

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
2 hours ago

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

– marmot
1 hour ago

add a comment |

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Ok, I made some refinements:

Use pics for the lipids.

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

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

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

edited 1 hour ago

answered 2 hours ago

marmot

93.1k4109204

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
2 hours ago

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
2 hours ago

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

– marmot
1 hour ago

add a comment |

Ok, I made some refinements:

Use pics for the lipids.

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

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

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

edited 1 hour ago

answered 2 hours ago

marmot

93.1k4109204

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
2 hours ago

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
2 hours ago

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

– marmot
1 hour ago

add a comment |

Ok, I made some refinements:

Use pics for the lipids.

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

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

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

edited 1 hour ago

answered 2 hours ago

marmot

93.1k4109204

Ok, I made some refinements:

Use pics for the lipids.

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

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

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

edited 1 hour ago

answered 2 hours ago

marmot

93.1k4109204

edited 1 hour ago

answered 2 hours ago

marmot

93.1k4109204

answered 2 hours ago

marmot

93.1k4109204

answered 2 hours ago

marmot

93.1k4109204

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
2 hours ago

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
2 hours ago

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

– marmot
1 hour ago

add a comment |

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
2 hours ago

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
2 hours ago

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

– marmot
1 hour ago

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
2 hours ago

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
2 hours ago

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

– marmot
1 hour ago

add a comment |

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