File:Cylindrical magnet.svg
Jump to navigation
Jump to search
Size of this PNG preview of this SVG file: 616 × 216 pixels. Other resolutions: 320 × 112 pixels | 640 × 224 pixels | 1,024 × 359 pixels | 1,280 × 449 pixels | 2,560 × 898 pixels.
Original file (SVG file, nominally 616 × 216 pixels, file size: 2 KB)
Captions
Captions
Add a one-line explanation of what this file represents
Summary[edit]
| Description | |
| Date | |
| Source | Own work |
| Author | Geek3 |
| Other versions | File:VFPt cylindrical magnet.svg (with field lines) |
| SVG development | |
| Source code | Python code#!/usr/bin/python
# -*- coding: utf8 -*-
try:
import svgwrite as svg
except ImportError:
print 'requires svgwrite library: http://pypi.python.org/pypi/svgwrite/'
exit(1)
name = 'Cylindrical_magnet'
w, h = 616, 216
lw = 16
l, r = (w - lw) / 2., (h - lw) / 2.
# document
doc = svg.Drawing(name + '.svg', size=(w, h))
doc.set_desc(title=name,
desc='about: http://commons.wikimedia.org/wiki/File:{0}.svg'.format(name))
doc['stroke'] = 'black'
doc['stroke-linejoin'] = 'miter'
magnet = doc.add(doc.g(id='magnet', transform='translate({0},{1})'.format(w/2., h/2.)))
# green and red areas
magnet.add(doc.rect(insert=(-l, -r), size=(2*l, 2*r),
fill='#00cc00', stroke='none'))
magnet.add(doc.rect(insert=(0, -r), size=(l, 2*r),
fill='#ff0000', stroke='none'))
# light reflection gradient overlay
grad = doc.defs.add(doc.linearGradient(id='gradient',
x1=0, x2=0, y1=-r, y2=r, gradientUnits='userSpaceOnUse'))
for col, of, opa in [['#000000', '0', '0.125'],
['#ffffff', '0.07', '0.125'], ['#ffffff', '0.25', '0.5'],
['#ffffff', '0.6', '0.2'], ['#000000', '1', '0.33']]:
grad.add_stop_color(offset=of, color=col, opacity=opa)
# frame
magnet.add(doc.rect(insert=(-l, -r), size=(2*l, 2*r),
style='fill:url(#gradient); stroke-width:{0}; stroke-linejoin:miter; stroke:#000000'.format(lw)))
# S and N labels
S = doc.text('S', insert=(0, 0),
transform='translate({0},{1}) scale({2},{2})'.format(
-0.65 * l, 0.44 * r, r / 100.))
N = doc.text('N', insert=(0, 0),
transform='translate({0},{1}) scale({2},{2})'.format(
0.65 * l, 0.44 * r, r / 100.))
text_attr = {'text-anchor':'middle',
'style':'fill:#000000; stroke:none; ' +
'font-size:120px; font-family:Bitstream Vera Sans'}
for k, v in text_attr.iteritems():
S[k] = v
N[k] = v
magnet.add(S)
magnet.add(N)
doc.save()
try:
import xml.dom.minidom
xml = xml.dom.minidom.parse(name + '.svg')
with open(name + '.svg', 'w') as svg_file:
svg_file.write(xml.toprettyxml(indent=' '))
except ImportError: pass
|
Licensing[edit]
I, the copyright holder of this work, hereby publish it under the following licenses:
|
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. |
This file is licensed under the Creative Commons Attribution 3.0 Unported license.
- 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.
You may select the license of your choice.
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 19:57, 23 May 2015 | | 616 × 216 (2 KB) | Geek3 (talk | contribs) | Cylindrical_magnet image by Geek3 |
You cannot overwrite this file.
File usage on Commons
The following 6 pages use this file:
