Gfrktyl

I want to fill half of the bottle. I tried these kind of commands:

%filldraw[color=black!100, fill=cyan!30, very thick](-3,-2.4) arc (180:230:2.5) .. controls (-2,-5) and (-1.9,-5.2) .. (-1.8,-5.5) ;

But I failed. Here is the bottle:

documentclass[11pt,a4paper,oneside]{article}

usepackage[a4paper,left=3cm,right=2cm,top=2.5cm,bottom=2.5cm]{geometry}

usepackage[utf8x]{inputenc}

usepackage{tikz}



begin{document}

begin{tikzpicture}[xscale=1,yscale=1]



draw[very thick](0,0) arc (0:180:1.5);

draw[very thick] (-3,0) -- (-3,-2.5);

draw[very thick] (0,0) -- (0,-2.5);

draw[color=black!100,very thick](-3,-2.5) arc (180:235:3);

draw[color=black!100,very thick](0,-2.5) arc (0:-55:3);

draw[very thick] (-1.25,-4.95) -- (-1.25,-5.2) -- (-1.7,-5.2) -- (-1.7,-4.95);



end{tikzpicture}

end{document}

What I want:

documentclass[border=5pt,tikz]{standalone}



begin{document}

    begin{tikzpicture}[xscale=1,yscale=1]

    fill[blue!20] (0,-2.5) --+ (0,2.5) arc (0:180:1.5) -- (-3,-2.5) arc (180:235:3) --+ (0,-.25) --+ (.45,-.25) --+ (.45,.015) (0,-2.5) arc (0:-55:3);



    fill[white] (0,0) arc(0:180:1.5) --+ (0,-2) -| cycle;



    fill[blue!10] (-1.5,-2) circle ({1.5cm-0.4pt} and 0.5cm); % Thank you, marmot! ;)



    draw[very thick] (0,-2.5) --+ (0,2.5) arc (0:180:1.5) -- (-3,-2.5) arc (180:235:3) --+ (0,-.25) --+ (.45,-.25) --+ (.45,.015) (0,-2.5) arc (0:-55:3);

    end{tikzpicture}

end{document}

Output: See below

Explanation:

Maybe beginners don't know the clip option and maybe the want just a type of "trivial" answer, so I had the following idea:

Let's fill the whole bottle with blue color and the just fill the upper part of it with white color. So we get at the end a bottle, which just a part is colored blue. The line

fill[white] (0,0) arc(0:180:1.5) --+ (0,-2) -| cycle;

Does the following: It constructs the following path: It fills the arc at the top of the bottle, so we moved from point (-3,0) to the point (0,0). Now, we are going from the last point two cm down, but we want TikZ to calculate that point, so we write … (x_1,y_1) --+ (0,-2), which gives us the coordinate (x_1,y_1 + (-2)) = (x_1,y_1-2). Now we have got three points, and want to cycle the path. The option -| gives us the y coordinate from the point (x_1,y_1 + (-2)) = (x_1,y_1-2) and the x coordinate of the point (0,0). The word cycle means that we draw our path to the initial point.

P.S.: {1.5cm-0.4pt} (from the circle): in curly braces we let TikZ calculate the difference; 4pt is the thickness of the line of the bottle.

EDIT:

A little bit better solution:

documentclass[border=5pt,tikz]{standalone}



begin{document}

    begin{tikzpicture}[xscale=1,yscale=1]

    clip (0,-2.5) --+ (0,2.5) arc (0:180:1.5) -- (-3,-2.5) arc (180:235:3) --+ (0,-.25) --+ (.45,-.25) --+ (.45,.015) (0,-2.5) arc (0:-55:3);



    fill[blue!20] (-3,-5.5) rectangle ++(3,3.5);



    fill[blue!10] (-1.5,-2) circle ({1.5cm-0.4pt} and 0.5cm);



    draw[very thick] (0,-2.5) --+ (0,2.5) arc (0:180:1.5) -- (-3,-2.5) arc (180:235:3) --+ (0,-.25) --+ (.45,-.25) --+ (.45,.015) (0,-2.5) arc (0:-55:3);

    end{tikzpicture}

end{document}

Explanation:

We can just "clip" the bottle: everything, what we draw, is now in the area of the bottle. Everything outside that area is invisible. So we just clip the bottle and fill a rectangle, such it fills a certain area of the bottle.

Output:

EDIT:

For Sebastiano:

documentclass[border=5pt,tikz]{standalone}

usetikzlibrary{decorations.text,backgrounds}

definecolor{wine}{RGB}{216,198,62}

definecolor{bottle}{RGB}{76,163,58}

tikzset{

    my/.style={

        postaction={decorate},decoration={text along path,

            text={#1},text align=center}

    }

}

begin{document}

    begin{tikzpicture}

        begin{scope}

            clip (0,-2.5) --+ (0,2.5) arc (0:180:1.5) -- (-3,-2.5) arc (180:235:3) --+ (0,-.25) --+ (.45,-.25) --+ (.45,.015) (0,-2.5) arc (0:-55:3);

            fill[inner color=bottle!50,outer color=bottle] (0,-2.5) --+ (0,2.5) arc (0:180:1.5) -- (-3,-2.5) arc (180:235:3) --+ (0,-.25) --+ (.45,-.25) --+ (.45,.015) (0,-2.5) arc (0:-55:3);

                fill[wine!60] (-3,-5.5) rectangle ++(3,3.5);

                fill[wine!40] (-1.5,-2) circle ({1.5cm-0.4pt} and 0.5cm);

            foreach x in {-5,-4.9,...,5}

            foreach y in {-5,...,-3}

            {

                pgfmathsetmacroopacity{random(1,10)*(1/10)}

                pgfmathsetmacroradius{random(1,2)*(.05/2)}

                    fill[white,opacity=opacity] (x+1.3*rnd,y+1.4*rnd) circle(radius);

            }

            draw[very thick] (0,-2.5) --+ (0,2.5) arc (0:180:1.5) -- (-3,-2.5) arc (180:235:3) --+ (0,-.25) --+ (.45,-.25) --+ (.45,.015) (0,-2.5) arc (0:-55:3);

            path[my={The magic of Ti{emph{color{orange}k}}Z}] (-3.5,.5) arc(-180:0:2 and 1);

           end{scope}

    end{tikzpicture}

end{document}

Output:

This looks like a code golfing challenge ;)

documentclass[tikz,border=7pt]{standalone}

usetikzlibrary{svg.path}

begin{document}

  begin{tikzpicture}[scale=3]

    draw svg{M6 0V8A6 6 0 0 1-6 8V0};

    draw[fill=blue!20] svg{M6 0c0-9-3-11-5-13v-1h-2v1c-2 2-5 4-5 13};

  end{tikzpicture}

end{document}