RE: [Flashcoders] Golden Ratio Spiral points

2007-09-12 Thread Merrill, Jason
Thanks Glen, Danny, and Mark, I'll give these a try! Jason Merrill Bank of America GTO Learning Leadership Development eTools Multimedia Team ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive:

[Flashcoders] Golden Ratio Spiral points

2007-09-10 Thread Merrill, Jason
\I'm no math whiz, does anyone know how I can draw a golden spiral and position and move sprites/movieClips along a golden spiral path? What is a golden spiral? http://en.wikipedia.org/wiki/Golden_spiral In geometry, a golden spiral is a logarithmic spiral whose growth factor b is related to

Re: [Flashcoders] Golden Ratio Spiral points

2007-09-10 Thread Glen Pike
Hi, I think you need to do Rectangular to Polar conversion after working out your r value based on your angle. Assuming c is calculated by c = \varphi ^ \frac{2}{\pi} = 1.358456 Then here is some psuedocode. for(angle = 0;angle revolutions;angle += step) { c =

Re: [Flashcoders] Golden Ratio Spiral points

2007-09-10 Thread Danny Kodicek
What is a golden spiral? http://en.wikipedia.org/wiki/Golden_spiral In geometry, a golden spiral is a logarithmic spiral whose growth factor b is related to φ, the golden ratio. Specifically, a golden spiral gets wider (or further from its origin) by a factor of φ for every quarter-turn it

Re: [Flashcoders] Golden Ratio Spiral points

2007-09-10 Thread Mark Winterhalder
var radius = Math.pow( a * c, angle ); Ooops, should be: var radius = a * Math.pow( c, angle ); And angle is in radians, so Math.PI * 2 is a full circle. It's what Math.atan2() gives you (not so incidentally), so if you want to tie it to a mouse pos... Mark On 9/11/07, Mark Winterhalder