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Draw in Canvas by finger, Android
... circlePath.reset();
circlePath.addCircle(mX, mY, 30, Path.Direction.CW);
}
}
private void touch_up() {
mPath.lineTo(mX, mY);
circlePath.reset();
// commit the path to our offscreen
mCanvas.drawPath...
What does jQuery.fn mean?
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853
In jQuery, the fn property is just an alias to the prototype property.
The jQuery identifier (o...
Expanding tuples into arguments
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edited May 27 at 13:31
Nicolas Gervais
13.3k77 gold badges3434 silver badges5656 bronze badges
a...
How can I measure the speed of code written in PHP? [closed]
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Pascal MARTINPascal MARTIN
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Java - JPA - @Version annotation
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answered Apr 3 '10 at 20:50
Pascal ThiventPascal Thivent
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Is there an R function for finding the index of an element in a vector?
... function match works on vectors :
x <- sample(1:10)
x
# [1] 4 5 9 3 8 1 6 10 7 2
match(c(4,8),x)
# [1] 1 5
match only returns the first encounter of a match, as you requested. It returns the position in the second argument of the values in the first argument.
For multiple matching, ...
How do I deserialize a JSON string into an NSDictionary? (For iOS 5+)
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335
It looks like you are passing an NSString parameter where you should be passing an NSData para...
jQuery equivalent of getting the context of a Canvas
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283
Try:
$("#canvas")[0].getContext('2d');
jQuery exposes the actual DOM element in numeric index...
Adding console.log to every function automatically
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edited Jul 15 '13 at 19:54
answered Feb 17 '11 at 21:06
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Circle line-segment collision detection algorithm?
...'ve simplified the problem to 2D here, the solution we get applies also in 3D
to get:
Expand
x2 - 2xh + h2 + y2 - 2yk + k2 - r2 = 0
Plug
x = ex + tdx
y = ey + tdy
( ex + tdx )2 - 2( ex + tdx )h + h2 +
( ey + tdy )2 - 2( ey + tdy )k + k2 - r2 = 0
Explode
ex2 + 2extdx + t2dx2 - 2exh - 2tdxh + h2 ...