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Original file (SVG file, nominally 200 × 223 pixels, file size: 16 KB)

Summary

Description
English: Illustration of the moment of inertia of a solid cylinder.
Date
Source SVG rendering of the program used to generate the bitmap image Image:Moment_of_inertia_solid_cylinder.png
Author
  • Original MetaPost program by en:User:Grendelkhan
  • Program tweaked to avoid negative coordinates in PostScript output and rendered as SVG by Qef
  • Swap x and y axis to give right handed coordinate system by billingd on 2017-05-20
Other versions Bitmap rendering of almost identical program: Image:Moment_of_inertia_solid_cylinder.png
SVG development
InfoField
 
The SVG code is valid.
 
This vector image was created with MetaPost.
Source code
InfoField

PostScript code

metapost-source 
prologues := 3;

u=18mm;
textscale=u/12mm;

def cylinder =
  begingroup;
  save pmax,dmax,persp,persp_nt,arr;
  save harrtop,harrbot,rarrlft,rarrrt;
  save p,d;
  save axisprotrusion;
  save xax,yax,zax;
  pmax = 3; dmax = 0;
  persp_nt = 0.3;
  persp = persp_nt*u;
  arr = 0.2u; % how far to offset the arrows from the diagram
  axisprotrusion = 1u;  % how far do the axes protrude?
  pair harrtop,harrbot,rarrlft,rarrrt; % endpoints for arrows
  path p[],d[]; % original, dotted
  pair xax[],yax[],zax[]; % x,y,z are taken; these are for the axes
  % solid paths
  p0 = (-1u,-1u)--(-1u,1u);
  p1 = (1u,-1u)--(1u,1u);
  p2 = fullcircle scaled u xscaled 2 yscaled (2*persp_nt) shifted (0,1u);
  p3 = halfcircle scaled u xscaled 2 yscaled (2*persp_nt) rotated 180 shifted (0,-1u);
  % dashed paths
  d0 = halfcircle scaled u xscaled 2 yscaled (2*persp_nt) shifted (0,-1u);
  % endpoints of dimension arrows
  harrtop = (-1u-arr,1u);
  harrbot = (-1u-arr,-1u);
  rarrlft = (0,1u);
  rarrrt = (1u,1u);

  % actually draw
  pickup pencircle scaled 1pt;
  for i=0 upto pmax:
    draw p[i];
  endfor;
  for i=0 upto dmax:
    draw d[i] dashed evenly;
  endfor;
  drawdblarrow (harrtop..harrbot);
  drawdblarrow (rarrlft..rarrrt);
  label.lft(btex $h$ etex scaled textscale,.5[harrtop,harrbot]);
  label.top(btex $r$ etex scaled textscale,.5[rarrlft,rarrrt]);
  % x axis
  xax0 = (0,0);
  xax1 = point 1.5 of p3 shifted (0,1u);
  xax2 = (1.+axisprotrusion/u)[xax0,xax1];
  drawarrow (xax1..xax2);
  draw xax0..xax1 dashed evenly;
  label.rt(btex $y$ etex scaled textscale,xax2);
  % y axis
  yax0 = (0,0);
  yax1 = (1u,0);
  yax2 = (1u+axisprotrusion*0.5,0);
  drawarrow (yax1..yax2);
  draw yax0..yax1 dashed evenly;
  label.top(btex $x$ etex scaled textscale,yax2);
  % z axis
  zax0 = (0,0);
  zax1 = (0,1u);
  zax2 = (0,1u+axisprotrusion);
  drawarrow (zax1..zax2);
  draw zax0..zax1 dashed evenly;
  label.top(btex $z$ etex scaled textscale,zax2);
  endgroup;
enddef;

beginfig(1)
  cylinder;
  currentpicture := currentpicture shifted (100,100); % avoid unwanted clipping
endfig;
end

Data

mpost fig.mp
ps2pdf -dEPSCrop fig.1 fig.pdf
#pstoedit -page 1 -dt -xscale 2 -yscale 2 -f sk fig.pdf fig.sk
#inkscape -z --vacuum-defs -f fig.sk -l fig.svg
pdf2svg fig.pdf fig.svg

Licensing

Grendelkhan at the English Wikipedia, the copyright holder of this work, hereby publishes it under the following license:
GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.
w:en:Creative Commons
attribution share alike 		This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
Attribution: Grendelkhan at the English Wikipedia
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
This licensing tag was added to this file as part of the GFDL licensing update.

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inception

9 July 2008

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Date/TimeThumbnailDimensionsUserComment
current14:45, 19 May 2017Thumbnail for version as of 14:45, 19 May 2017200 × 223 (16 KB)BillingdUpdate metapost code to swap x and y axes to give a right handed coordinate system. Regenerate svg.
22:36, 9 July 2008Thumbnail for version as of 22:36, 9 July 2008320 × 357 (13 KB)Qef{{Information |Description={{en|1=Illustration of the moment of inertia of a solid cynlinder.}} |Source=SVG rendering of the program used to generate the bitmap image Image:Moment_of_inertia_solid_cylinder.png |Author=* Original MetaPost program by [

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