### Archive

Archive for January, 2008

## FK Experiment in PV3D

My backlog of ‘background’ projects seems to only keep growing and one of the casualties over the last several months has been kinematic experiments in PV3D.  Fortunately, Lee Felarca seems to be making some inroads in this area.  Check out a recent experiment from his blog – hope to see more from him over time.

Maybe one day I’ll get back to the 2D rigging classes …

Categories: Uncategorized

## AS 3 Parametric Curve Library Used in New Online Games

The Singularity AS 3 Parametric Curve Library was used by Milo Creative (Paul Argent lead producer) to build some of the games at the BBC CBeebies site [they were responsible for ‘Bubble Pop’, ‘Wake up Shoop’, ‘Sun and Moon’, and ‘Music Moods’]  I still get some AS errors on the initial buttons, but ignore and go on.  An interesting use of computational geometry!

Categories: Flash, General

## K-th Order Bezier Curve

Time is short, but I’ve made a little progress on the k-th order Bezier demo.  You can see a good introduction to the method at the Wikipedia page. In the past, I’ve found this to be a good teaching tool for basic computational geometry and programming concepts such as Pascal’s triangle and comparing the naive formula vs. coefficient generation.  It’s also a good introduction as to why composite cubic curves are preferred to high-order Beziers.

With high-order curves, numerical issues can arise, the discussion of which is a longer-term goal.  The Wikipedia article has a nice animation of deCasteljau’s method, but only for a fixed-order curve.  My longer term goal with the demo is to have an interactive teaching tool allowing students to visualize the method for any order curve.

The work-in-progress example is in the BezierNumeric.mxml file that is now in the updated Singularity package (demos folder), which can be downloaded here.  As I make additions to the demo, I’ll update the package and eventually put the complete demo online.

Categories: Flex, Math

## Math Learning Activities and Teaching Resources

I often talk about the series, Numb3rs, at meetings and conferences.  There is an interesting book (The Numbers Behind NUMB3RS) that talks about the application of math in the series.  It is written at a very high level and is a good read. The supporting blog has links to some learning activites constructed around math used in individual episodes.  The page also has information for teachers to download episodes to use in the classroom.

The Math Can Take You Places site has some interesting learning activities and for the ultimate teaching tool, check out Explore Learning Gizmos.

Categories: Math

Still clearing out the backlog of requests – if you are currently using PureMVC and are looking for tips/tutorials/etc beyond material and forums on the PureMVC site, here is a quick dump of my bookmarks. I’ll update these on del.icio.us later.

Minimalist Framework Example

FLV Player with PMVC

Sample Gallery Application (w/source)

10 Tips for Working with PMVC

PMVC and AMFPHP

PMVC Tips (blog posts)

Cairngorm to PMVC Example

WebOrb/PHP/Flex/PMVC Example

Flex PopUps and PMVC

Project Template for FlashDevelop

PMVC Presentation (files coming Q1 ’08)

Site Developed with PMVC

Categories: Uncategorized

## MAA Mathematical Sciences Digital Library

January 21, 2008 1 comment

I’m working through a backlog of emails and requests, one of which was the addition of 3D parametric curve graphing in the Singularity library.  Spare time is currently at a premium, so I will point out that an AS3 library and tutorial set for this topic is currently available at the MAA Mathematical Sciences Digital library.

Categories: Math Tags: ,