Tag Archives: physics

Working out a Math Problem | BIT-101

I love how math creeps into design, programming and other problem solving. I had some fun playing with Keith’s code (as usual). I’m always impressed with how he’ll see a problem and eventually at least figure out how to solve it using math/trig/physics. It’s a breath of fresh air and it almost makes me wish [...]

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Ocean Currents Animated

Can't help but think about flocking behavior and different physics issues I've programmed when I look at things like this. It's really interesting to watch the current change over time as well. Then think about the currents at different dimensions of the ocean knowing that they may be crossing currents at different depths. Embedded Link [...]

Snow via Javascript & Canvas – Tis the Season

After playing with the settings in my experiments I found a few settings I liked and wanted to develop further. The first was snow! An added bonus I was able to work on a project just for the holidays and used much of this code in it! I looked around the web and saw a [...]

Interactive Physics Animations Javascript Canvas 17

I’m really enjoying giving a control panel of sorts to the end user and letting them control the physics rules of their canvas. Let’s add more motion to it by applying a jitter to the velocity of each dot. This is similar to earlier, when we first started animating by applying a random number to [...]

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Interactive Physics Animations Javascript Canvas 16

I always want to give the end user (at least some) control of how they view and interact with data. Earlier we gave users control over gravity. Here let’s give them control over the canvas edges. Rather than having our dots bounce on the edges of the canvas, lets have them wrap across to the [...]

Interactive Physics Animations Javascript Canvas 15

Earlier we worked on making all the dots draggable, but what’s better than simply dragging dots? Let’s set up a way to throw the dots! Now as we drag it we record the positions and use that to calculate a new velocity. Then when a dot is dropped, it will have a trajectory to follow [...]

Interactive Physics Animations Javascript Canvas 14

Here is an update to allow the end user to create more dots. A good way to do that is to just let users click on the canvas, and if they click a dot, drag it, if they don’t click a dot, create a new dot at the point of click. I moved the dot [...]

Interactive Physics Animations Javascript Canvas 13

Now that we have gravity we’re really seeing some natural looking movement. Yet, it’s still missing something. In the real world we have friction or drag (or even air resistance) on everything. Without this friction it’s like these balls are moving in space. Even when they bounce on the walls they don’t loose any velocity, [...]

Interactive Physics Animations Javascript Canvas 12

Adding gravity! Here we’ve adjusting the y velocity in every frame with the force of gravity. It’s fun to play with options and see how they are affecting the animation and the physics, so I’ve also got a checkbox that will toggle gravity to either a vlaue of 2 or 0. interactive physics animations via [...]

Interactive Physics Animations Javascript Canvas 11

Well, the last iteration was fun, but the animation went so quick. Now we’re going to do something to contain these dots in our canvas. Let’s have them bounce off the edges of the canvas. We’ll multiply the velocity by a bounce variable. This will reverse the direction the dot is going. We’ll have a [...]

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Presenting at WordCamp Atlanta – Child Themes

The presentation? Your firstborn child theme. Child themes 101+2. I’m speaking at wordcamp atlanta this afternoon about themes and child themes. I’ll update this post with post-presentation notes. Learn how to mod themes the right way. Using child themes you won’t loose your edits when there’s a theme update. (101) We’ll go over the advantages [...]

Hooks, In a Nutshell – WP Daily

I’ve published another article over on wpdaily.co exploring the concept of hooks. I remember when starting out that people kept mentioning hooks and filters and actions and… it took a while to grasp what they each meant. I think the first time I started to grasp it was when I read the codex and saw [...]

Speaker at WordCamp Atlanta 2013

I’m excited to be speaking at WordCamp Atlanta again this year! The time is quickly approaching for WordCamp Atlanta 2013, March 15-16. I spoke last year and discussed the process of going from Photoshop PSD to WordPress Theme, here are my slides and notes for that WordCamp Presentation. This year I’m speaking along the same [...]

WP Features: Theme or Plugin

Reading my wpdaily.co updates today and saw this post talking about WordPress theme features. Eric explains the debate: Generally-speaking, the conversations have always circled around features: There are those that believe every feature you could ever imagine should be included like text color, font selector, and more. On the flip-side, there are those that feel [...]

Packery Preview, from Metafizzy & descended from Masonry

David Desandro / metafizzy, maker of masonry and isotope of which I’m a big fan and user of has been busy with a new project called Packery. Packery, looks to be a child of Masonry. As you would expect it seems to be pushing things much further and addressing a few pain points of masonry. [...]

On Going Responsive (responding to Where to Start)

I needed to write this up about going responsive in response after reading Where to Start (by Trent Walton of Paravel) about getting started with responsive web design. Thanks for sharing your thoughts Trent, I agree whole heartedly. In my experience it is the same. I wanted to share his post and also add my [...]

Evan Mullins

The keystore is used for creating valid apps that are associated with the author. It is not...

Rohan Dave

I am new in android and have certain question about KeyStore. Is KeyStore used in user...

arpit

very useful thank you …..

Duan

@ugh You’re joking, right? I do some basics in Flash, but come on – all you do is...

Cátia Vala

Thank you so much Evan! That’s great! Keep going with your amazing work.

zproxy

thanks i bet its faster to google and find some ad hoc documentation than the other way.