Sstrhsrtj

Simmilar to:
Drawing spheres

I want to draw multiple 3D hexagonal cylinders like this one:

with different sizes and positions.

Here is a proposal.

documentclass[tikz,border=3.14mm]{standalone}

usepackage{tikz-3dplot} 

begin{document}

pgfkeys{/hexagonal prism/.cd,

rotation angle/.initial=0,

height/.initial=4,

diameter/.initial=2

}

tikzset{pics/.cd, 

hexi/.style={code={

pgfmathsetmacro{myangle}{mod(pgfkeysvalueof{/hexagonal prism/rotation angle},60)}

pgfmathsetmacro{phieff}{(tdplotmainphi-mod(tdplotmainphi+690,60)+30)}

draw[fill=gray!60] ({pgfkeysvalueof{/hexagonal prism/diameter}*cos(0+myangle+phieff)},{pgfkeysvalueof{/hexagonal prism/diameter}*sin(0+myangle+phieff)},0) --

 ({pgfkeysvalueof{/hexagonal prism/diameter}*cos(-60+myangle+phieff)},{pgfkeysvalueof{/hexagonal prism/diameter}*sin(-60+myangle+phieff)},0) 

 --({pgfkeysvalueof{/hexagonal prism/diameter}*cos(-60+myangle+phieff)},{pgfkeysvalueof{/hexagonal prism/diameter}*sin(-60+myangle+phieff)},pgfkeysvalueof{/hexagonal prism/height}) --

 ({pgfkeysvalueof{/hexagonal prism/diameter}*cos(0+myangle+phieff)},{pgfkeysvalueof{/hexagonal prism/diameter}*sin(0+myangle+phieff)},pgfkeysvalueof{/hexagonal prism/height}) -- cycle;

draw[fill=gray!20] ({pgfkeysvalueof{/hexagonal prism/diameter}*cos(-60+myangle+phieff)},{pgfkeysvalueof{/hexagonal prism/diameter}*sin(-60+myangle+phieff)},0) --

 ({pgfkeysvalueof{/hexagonal prism/diameter}*cos(-120+myangle+phieff)},{pgfkeysvalueof{/hexagonal prism/diameter}*sin(-120+myangle+phieff)},0) 

 --({pgfkeysvalueof{/hexagonal prism/diameter}*cos(-120+myangle+phieff)},{pgfkeysvalueof{/hexagonal prism/diameter}*sin(-120+myangle+phieff)},pgfkeysvalueof{/hexagonal prism/height}) --

 ({pgfkeysvalueof{/hexagonal prism/diameter}*cos(-60+myangle+phieff)},{pgfkeysvalueof{/hexagonal prism/diameter}*sin(-60+myangle+phieff)},pgfkeysvalueof{/hexagonal prism/height}) -- cycle;

draw[fill=gray!10] ({pgfkeysvalueof{/hexagonal prism/diameter}*cos(-120+myangle+phieff)},{pgfkeysvalueof{/hexagonal prism/diameter}*sin(-120+myangle+phieff)},0) --

 ({pgfkeysvalueof{/hexagonal prism/diameter}*cos(-180+myangle+phieff)},{pgfkeysvalueof{/hexagonal prism/diameter}*sin(-180+myangle+phieff)},0) 

 --({pgfkeysvalueof{/hexagonal prism/diameter}*cos(-180+myangle+phieff)},{pgfkeysvalueof{/hexagonal prism/diameter}*sin(-180+myangle+phieff)},pgfkeysvalueof{/hexagonal prism/height}) --

 ({pgfkeysvalueof{/hexagonal prism/diameter}*cos(-120+myangle+phieff)},{pgfkeysvalueof{/hexagonal prism/diameter}*sin(-120+myangle+phieff)},pgfkeysvalueof{/hexagonal prism/height}) -- cycle;

ifdimtdplotmaintheta pt<90pt

 draw[fill=gray!15] ({pgfkeysvalueof{/hexagonal prism/diameter}*cos(0+myangle)},{pgfkeysvalueof{/hexagonal prism/diameter}*sin(0+myangle)},pgfkeysvalueof{/hexagonal prism/height}) --

  ({pgfkeysvalueof{/hexagonal prism/diameter}*cos(-60+myangle)},{pgfkeysvalueof{/hexagonal prism/diameter}*sin(-60+myangle)},pgfkeysvalueof{/hexagonal prism/height}) -- 

  ({pgfkeysvalueof{/hexagonal prism/diameter}*cos(-120+myangle)},{pgfkeysvalueof{/hexagonal prism/diameter}*sin(-120+myangle)},pgfkeysvalueof{/hexagonal prism/height}) -- 

  ({pgfkeysvalueof{/hexagonal prism/diameter}*cos(-180+myangle)},{pgfkeysvalueof{/hexagonal prism/diameter}*sin(-180+myangle)},pgfkeysvalueof{/hexagonal prism/height}) --

  ({pgfkeysvalueof{/hexagonal prism/diameter}*cos(-240+myangle)},{pgfkeysvalueof{/hexagonal prism/diameter}*sin(-240+myangle)},pgfkeysvalueof{/hexagonal prism/height}) -- 

  ({pgfkeysvalueof{/hexagonal prism/diameter}*cos(-300+myangle)},{pgfkeysvalueof{/hexagonal prism/diameter}*sin(-300+myangle)},pgfkeysvalueof{/hexagonal prism/height}) --  cycle;

else

 draw[fill=gray!85] ({pgfkeysvalueof{/hexagonal prism/diameter}*cos(0+myangle)},{pgfkeysvalueof{/hexagonal prism/diameter}*sin(0+myangle)},0) --

  ({pgfkeysvalueof{/hexagonal prism/diameter}*cos(-60+myangle)},{pgfkeysvalueof{/hexagonal prism/diameter}*sin(-60+myangle)},0) -- 

  ({pgfkeysvalueof{/hexagonal prism/diameter}*cos(-120+myangle)},{pgfkeysvalueof{/hexagonal prism/diameter}*sin(-120+myangle)},0) -- 

  ({pgfkeysvalueof{/hexagonal prism/diameter}*cos(-180+myangle)},{pgfkeysvalueof{/hexagonal prism/diameter}*sin(-180+myangle)},0) --

  ({pgfkeysvalueof{/hexagonal prism/diameter}*cos(-240+myangle)},{pgfkeysvalueof{/hexagonal prism/diameter}*sin(-240+myangle)},0) -- 

  ({pgfkeysvalueof{/hexagonal prism/diameter}*cos(-300+myangle)},{pgfkeysvalueof{/hexagonal prism/diameter}*sin(-300+myangle)},0) --  cycle;

fi

}}}

tdplotsetmaincoords{70}{110}

begin{tikzpicture}[tdplot_main_coords,font=sffamily]

% path[tdplot_screen_coords,use as bounding box] (-3,-1) rectangle (3,5);

 pic {hexi};

 pic[shift={(5,0,0)},/hexagonal prism/height=3] {hexi};

end{tikzpicture}

end{document}

Using Asymptote and the unofficial polyhedron_js asymptote package (available here https://github.com/pivaldi/asymptote-packages) you can define easily such a cylinder and play with it.
Please find the code (assuming that you have polyhedron_js.asy)

import polyhedron_js;



// comment the following line for OpenGl

//settings.render=0;



settings.tex="pdflatex";

settings.outformat="pdf"; // for opacity



size(10cm);



currentprojection=perspective(7,6,4); //if you want perspectivic look

//currentprojection=orthographic(1,1,0.5); //if you want othographic look

currentlight=(1,1,2);

// currentlight=nolight;





polyhedron hexa_cyl;

guide hexa=polygon(6);

hexa_cyl[0]=(point(hexa,0).x,point(hexa,0).y,0);

for(int i=1;i<6;++i) hexa_cyl[0]=hexa_cyl[0]--(point(hexa,i).x,point(hexa,i).y,0);

hexa_cyl[0]=hexa_cyl[0]--cycle;

for(int i=0;i<6;++i)

{

hexa_cyl[i+1]=point(hexa_cyl[0],i)--point(hexa_cyl[0],(i+1)%6)--

(shift(0,0,1)*point(hexa_cyl[0],(i+1)%6))--(shift(0,0,1)*point(hexa_cyl[0],i))--cycle;

}

hexa_cyl[6]=shift(0,0,1)*hexa_cyl[0];





polyhedron p1={scale(1,1,3)*hexa_cyl};

polyhedron p2={shift(4,1,1)*rotate(60,(2,1,3))*hexa_cyl};

polyhedron p3={shift(-2,-2,-2)*rotate(90,(1,0,0))*scale(.5,.5,2)*hexa_cyl};



filldraw(p1,new pen{0.8green},op=0.9);

filldraw(p2,new pen{0.8blue},op=0.9);

filldraw(p3,new pen{0.8yellow},op=0.9);

and the result