At 3:14 PM -0400 3/19/10, Dan Winckler wrote: >What do you call a curve like the one in the attached image? Rather, what's >the mathematical term for the equation that produces such a double curve. I >am trying to scale an incoming float number (0.0 1.0) so that it changes >more quickly in the middle of the range (~0.2 - 0.8) than at the top and >bottom (~ 0.0 - 0.2, 0.8 - 1.0). Right now I've got exponential scaling, >which works for the bottom of the range but not the top.
This is a curve produced by a polynomial equation. I recommend opening the application Grapher, which came with your Mac, and entering this equation: x = y^3+y^2+y This will give you a curve approximating the one you've drawn. Then you can play with adding numbers before the various terms (i.e. 3y^3, etc) to change the shape of the curve. Good luck. Jon _______________________________________________ Do not post admin requests to the list. They will be ignored. Quartzcomposer-dev mailing list ([email protected]) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/quartzcomposer-dev/archive%40mail-archive.com This email sent to [email protected]
