Through the Interface

Floppy Friday #16

This week’s Floppy Friday is all about Indiana Jones games. Well, two of them, anyway. First we look at Indiana Jones in the Lost Kingdom from 1985 and then we play Indiana Jones and the Last Crusade – The Action Game from 1989. They’re very different games, which I’m sure you’ll see from this episode. I think I’ve managed to fix the focus-related issue from last week (this happened when there was a major change in luminosity with the screen), so hopefully that’s better. Feedback welcome! I’ve also made some progress with repairing the second of my two “breadbin”... Read more →

An augmented reality view of an Apollonian packing using PointCloud Browser

After my initial (only partially successful) attempt, earlier in the week, to get 3D geometry from the Apollonian web-service into a PointCloud Browser session, I finally managed to get it working properly. Given the currently fairly light documentation available – especially for the Viper JavaScript namespace which gives access to the 3D rendering capabilities in the browser – I ended up posting a question to the PointCloud forum. The answer was very instructive – I was able not only to get spheres of different radii displayed using the same mesh… … but also to apply different colours to the... Read more →

Using SLAM-based Augmented Reality to visualize 3D geometry

I first became aware of the work being done by 13th Lab a couple of years ago, but just last week someone pinged me about it again and re-triggered my interest (thanks, Jim :-). 13th Lab is a small Swedish company that has created some really interesting Augmented Reality technology. Many AR systems make use of fiduciary markers (which often look like sections of QR codes) to make it easier to determine where the 3D content should be positioned and visualized in the 2D image of the scene being fed from your device’s camera. Ideally, though, you want a... Read more →

Cloud & mobile series summary

As we reach the end of this long series of posts on moving code to the cloud – and a look at ways to use the functionality from a wide variety of applications, many of them on mobile devices – I felt it was worth putting together a quick summary post to reinforce the overall message (which may have been a bit lost in the sheer volume of information). Firstly, here are the posts in this series, including those looking at the original creation of the “desktop” application functionality: Creating the core desktop functionality Circle packing in AutoCAD: creating... Read more →

Creating a 3D viewer for our Apollonian service using HTML5 – Part 3

To finish off our look at developing an HTML5-based 3D viewer for our Apollonian web-service, today’s post integrates the trackball capability of the Three.js library. Many thanks to Jeff Geer for once again pointing me in the right direction on this. :-) The trackball capability allows you not to worry about manual implementation of 3D navigation inside your viewer: you simply set up some basic parameters to indicate the size of your model and the speed with which you want navigation to occur – as well as the keys for rotate, zoom and pan – and then you just... Read more →

Creating a 3D viewer for our Apollonian service using HTML5 – Part 2

In the last post, we created another, basic 3D viewer for the data from our Apollonian web-service – this time using HTML5 via Three.js. In this post, we’ll extend the code to listen for keyboard events and manipulate the model according to user-input, as well as enabling feature detection of WebGL (allowing the same implementation to call into the canvas rendering code when WebGL isn’t present). We’re introducing keyboard-based commands to enable zoom, rotate (meaning spin, although not continuously) and the change of levels: + Zoom in - Zoom out , or % Rotate left . or / Rotate... Read more →

Creating a 3D viewer for our Apollonian service using HTML5 – Part 1

After looking at how to bring data from our Apollonian web-service into Unity3D, Android and iOS over the last few weeks, it seemed natural to extend this series to cover HTML. A big thanks to Jeff Geer for suggesting Three.js, which is the HTML5-based framework I ended up adopting for this project. I like Three.js for a number of reasons: just as jQuery (another library I’ve used in this project, to good effect) attempts to abstract away the messiness inherent in supporting multiple browsers, Three.js does the same for the world of browser-resident 3D. The other main reason I... Read more →

Getting to know the Project Draw API

Last week David Falck, over at the Autodesk Labs team, provided me with an API key to have a play with the API to Project Draw. This post documents what I did, and how it all worked. Note: I'm not actually doing any coding whatsoever in this post: I used the handy API test page provided by the Autodesk Labs team, and so didn't need to write a single line of code. So, first of all, you'll need an API key. Here's the one I got from the Draw team: th1SIsnOTreAlLyMyapIkeyOfCourSE Just kidding. I've changed the above key for... Read more →

Looking for API developers to work with Project Draw

Over on It's Alive in the Lab, Scott Sheppard is looking for developers interested in working with the API to Project Draw. If you're interested, send an email. Read more →

Using AJAX to generate pages hosting Freewheel views

I touched on this subject a few weeks ago in part 2 of my DWF-related AU handout, but thought I'd come back and describe in more depth some of the fun (although a more accurate word might be "difficulty" :-) I had solving this problem. I've been playing around with web services and XML since SaaS was still known as ASP, and have tried to stay up-to-date with the technology as best I can. I'm really a client-side programmer, all things considered: I've created some server-side code, but have mostly involved myself with desktop-oriented programming and creation of samples... Read more →

AU Handouts: Enriching Your DWF™ - Part 2

[This post continues from part 1 of this series. The source for the below applications is available here: DWF Toolkit application source, Design Review application source & Freewheel application source.] Mining the data with the DWF Toolkit Now we’re going to look at using the DWF Toolkit – the freely available, cross platform toolkit for creating and reading DWF files – to extract the “identity” and “material” metadata associated with our geometry. The DWF Toolkit is a C++ toolkit, so we have two components to our project: A C++ DLL that uses the DWF Toolkit to read a DWF,... Read more →

Calling the DWFRender Web Service from HTML

I decided to go ahead and put a test page together for the DWFRender Web Service. It still wasn't feasible to make it part of the blog itself, given the issues with scripting, particularly, but I've included the files here for you to download and run locally: Download freewheel_web_service_test.zip There are three web methods called by this code: pdkVersion - gets the version of the PDK on the server (a string value) pageCount - gets the number of pages for a particular DWF file (an integer value) load - gets more detailed information about each page in a DWF... Read more →