sakri rosenstrom blog

an approach to triangulating polygons with holes

sakri — Fri, 12 Jun 2009 11:08:56 +0000

I know this has been done before, probably much more efficiently, but I had an idea wednesday and had to pursue it to its conclusion The other day Katopz pointed me to this snippet which triangulates polygons. I’ve also seen an approach to ear cutting by nicoptere. I figured that by converting an “O” [...]

Dynamic text with phong shading using Stok3d

sakri — Tue, 09 Jun 2009 10:52:20 +0000

Yesterday David DerSchmale Lenaerts released Stok3d into the wild. When he showed me the demos, I immediately felt (you guessed it) STOKED! Naturally my first question was : "does it support transparency?!", and with a resounding yes, I just had to try this with text I wanted to generate the texture maps dynamically. It's not [...]

Verlet Text Effect

sakri — Thu, 04 Jun 2009 11:47:56 +0000

Here's a demo I made for my presentation at multi-mania. I played around with verlet integration before and have long wanted to try this technique on text. Once I got the vectorization going, it was just a matter of connecting all the points to "Verlet Sticks". This turned out to be a little tougher than [...]

Detecting edge pixels with Marching Squares Algorithm

sakri — Thu, 28 May 2009 15:58:00 +0000

Last week a kind individual called "Rothrock" commented on an older blog entry of mine Extract shape outline points from BitmapData and pointed me to the Marching Squares Algorithm. (Image ruthlessly stolen from wikipedia without remorse) This does more or less what my "outline point extraction" algorithm was doing, except, with a grid of 4 pixels instead [...]

It’s Multi-Mania Mayhem May 18-19 Man!

sakri — Wed, 06 May 2009 05:17:21 +0000

May 18-19th in Kortrijk Belgium Europe’s biggest free multimedia event, Koen was kind enough to invite me to present alongside a cool list of speakers. This will be my second performance at the conference. I'll be doing an upgraded version of my FITC presentation : "Text Addiction". I've renamed it to "Hot tips [...]

3d Text by Extruding BitmapData Snapshots of Text

sakri — Tue, 05 May 2009 19:51:17 +0000

Putting together a number of previous blog posts, here's the current state of my 3d text. In terms of speed and quality, it's a big improvement on the examples I was showing at FITC in Amsterdam, old example here. So, the process is (links to blog posts with explanations and source code): Create text, grab [...]

Extracting, Analyzing and Optimizing a Vector Shape from a BitmapData Shape

sakri — Tue, 28 Apr 2009 20:09:00 +0000

This post has been a long time coming, as I've re-written the code more times than I care to recall. There are just too many ways to skin this damn cat! What I'm sharing now is not a final solution by any means. I just need to stop obsessing for a moment, move on [...]

Extract shape outline points from BitmapData

sakri — Mon, 13 Apr 2009 08:19:18 +0000

On my quest to generate 3D text from non-embedded fonts, after extracting positive and negative shapes from characters, the next step is to analyze and extract the points which define the pixel boundary surrounding the extracted shapes. There is a "brute" way to do this, simply by looping through every pixel in a BitmapData, and [...]

The FlashBar miniconference summary

sakri — Tue, 31 Mar 2009 09:18:45 +0000

The inaugural edition of the Flash Bar mini-conference was a raging success! After months of planning, we were treated to a stellar list of speakers: Bartek from http://www.everydayflash.com/ David from http://www.derschmale.com/ and myself Amongst the many highlights was this demonstration of liquid dynamics, a collaborated effort between David and Bartek: The resident DJ treated us to a solid set, spinning [...]

Mouse interactions on Text Layout Framework InlineGraphicElements in EditMode

sakri — Thu, 26 Mar 2009 10:52:20 +0000

One slightly frustrating (but totally logical) feature of using editmode in TLF is that inserted InlineGraphicElements lose their "interactivity". Instead, they are treated the same as text characters, that is, the user can select them as if they were selecting text: There was a comment In my previous entry about the possibility of mouse interaction with [...]