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A “curvature comb” is a type of graphical diagram added to the plot of a curve which shows a number of “teeth” segments with their bases along the curve, oriented perpendicular to the curve and proportional in length to its curvature. Personally I find it is easier to interpret a solid curve vs. a collection of line segments. But eventually I might also add a more traditional comblike display. I apply a sigmoid function (here, an arctangent) to the curvature so that even for very extremely sharply kinked cu

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Is the tunnel of light people report from NDEs just an illusion, is death and the tunnel of light: the final grand trick to trap & recycle you into the matrix?

A useful thing to do with position data eg from a motion capture system is to calculate the first and second derivatives These will give you the velocity...

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As the topic says, what is the difference? 'Cause I'm creating a lot of SVCDs and I wonder if I should use Dual Channel or Joint Stereo istead of

Hi, I need to divide a curved pipe in segments with the same length so I can select every other one. It seems to be very simple but I'm not managing to do it. …

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I've recently been learning about how to draw smoother curves that look more appealing. A common technique in professional CAD and font design software is to use a visualisation called a curvature comb to see how sharp or flat a curve is along its path. Here's an example of a curvature comb being used in Fontlab VI to smooth out bumpy spots in a font:

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I'm trying to extract the UV curves from a surface, however I many more curves than I require.  For example on a surface that is divided in the UV by 6 by 6, I…

Find/Change is not just for text or object attributes. A frequently-overlooked feature, Change to Clipboard Contents, is your key to quickly inserting hundreds of repeated inline graphics, replacing their text placeholders.

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