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File:Moment of inertia hoop.svg

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Original file (SVG file, nominally 310 × 157 pixels, file size: 9 KB)

Summary

Description
English: Illustration of the moment of inertia of a hoop.
Date
Source SVG rendering of the program used to generate the bitmap image Image:Moment_of_inertia_hoop.png
Author
  • Original MetaPost program by en:User:Grendelkhan
  • Program tweaked adjust axes labels to match bitmap version and to avoid negative coordinates in PostScript output and rendered as SVG by Qef
Other versions Bitmap rendering of almost identical program: Image:Moment_of_inertia_hoop.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 disc =
  begingroup;
  save pmax,persp,persp_nt,tens,arr;
  save rarrlft,rarrrt;
  save p;
  save axisprotrusion;
  save xax,yax,zax;
  pmax = 0;
  persp_nt = 0.3;
  tens = 2-persp_nt;
  persp = persp_nt*u;
  arr = 0.3u; % how far to offset the arrows from the diagram
  axisprotrusion = 1u;  % how far do the axes protrude?
  pair rarrlft,rarrrt; % endpoints for arrows
  path p[]; % just plain paths for now
  pair xax[],yax[],zax[]; % x,y,z are taken; these are for the axes
  % solid paths
  p0 = fullcircle scaled u xscaled 2 yscaled 2persp_nt;
  % endpoints of dimension arrows
  rarrlft = (0,0);
  rarrrt = (1u,0);
  % actually draw
  pickup pencircle scaled 1pt;
  for i=0 upto pmax:
    draw p[i];
  endfor;
  drawdblarrow (rarrlft..rarrrt);
  label.top(btex $r$ etex scaled textscale,.5[rarrlft,rarrrt]);
  % x axis
  xax1 = (1u,0);
  xax2 = (1u+axisprotrusion*0.5,0);
  drawarrow (xax1..xax2);
  label.rt(btex $y$ etex scaled textscale,xax2);
  % y axis
  yax0 = (0,0);
  yax1 = point 5 of p0;
  yax2 = (.6+axisprotrusion/u)[yax0,yax1];
  drawarrow (yax1..yax2);
  draw yax0..yax1 dashed evenly;
  label.ulft(btex $x$ etex scaled textscale,yax2);
  % z axis
  zax0 = (0,0);
  zax1 = (0,axisprotrusion);
  drawarrow (zax0..zax1);
  label.top(btex $z$ etex scaled textscale,zax1);
  endgroup;
enddef;

beginfig(1)
  disc;
  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

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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9 July 2008

File history

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Date/TimeThumbnailDimensionsUserComment
current22:36, 9 July 2008Thumbnail for version as of 22:36, 9 July 2008310 × 157 (9 KB)Qef{{Information |Description={{en|1=Illustration of the moment of inertia of a hoop.}} |Source=SVG rendering of the program used to generate the bitmap image Image:Moment_of_inertia_hoop.png |Author=* Original MetaPost program by [[en:User:Grendelkhan]

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