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How to determine if a list of polygon points are in clockwise order?
... telling you whether it's mostly clockwise).
Sum over the edges, (x2 − x1)(y2 + y1). If the result is positive the curve is clockwise, if it's negative the curve is counter-clockwise. (The result is twice the enclosed area, with a +/- convention.)
point[0] = (5,0) edge[0]: (6-5)(4+0) = 4
poi...
Is onload equal to readyState==4 in XMLHttpRequest?
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edited Feb 7 '12 at 18:44
answered Feb 7 '12 at 18:11
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What does [:] mean?
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110
It is an example of slice notation, and what it does depends on the type of population. If po...
Rails.env vs RAILS_ENV
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371
According to the docs, #Rails.env wraps RAILS_ENV:
# File vendor/rails/railties/lib/initial...
CSS last-child selector: select last-element of specific class, not last child inside of parent?
I want to select #com19 ?
6 Answers
6
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django 1.5 - How to use variables inside static tag
...tic files references in my project to the new {% static %} tag that django 1.5 introduced, but I'm having a problem, in some places I use variables to get the content. With the new tag I can't, is there any way to solve this?
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ERROR: Error installing capybara-webkit:
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218
If you are in Ubuntu do
sudo apt-get install qt4-dev-tools libqt4-dev libqt4-core libqt4-gui
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In git, is there a way to show untracked stashed files without applying the stash?
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125
Untracked files are stored in the third parent of a stash commit. (This isn't actually documen...
How do you specify the Java compiler version in a pom.xml file?
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312
<project>
[...]
<build>
[...]
<plugins>
<plugin>
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enum - getting value of enum on string conversion
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197
You are printing the enum object. Use the .value attribute if you wanted just to print that:
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