Kael Rowan

Foundations of Elegant Code

Posts
  • Kael Rowan

    IEEE and ACM

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    I just joined IEEE (incl. Computer Society) and ACM (incl. SIGCHI and SIGSOFT)! http://www.ieee.org/portal/myieee/memberNetMemberProfile.html?custNum=owVtw%2BB%2BLOFQMhnwZTtoog%3D%3D http://dl.acm.org/author_page.cfm?id=81464676892&coll=DL&dl...
  • Kael Rowan

    Debugger Canvas on Channel9

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    Hi everyone, Robert Green from Channel9 asked me to do a Debugger Canvas video for Channel9 last week and it went live today.  Check it out! http://channel9.msdn.com/Shows/Visual-Studio-Toolbox/Visual-Studio-Toolbox-Debugger-Canvas
  • Kael Rowan

    Exploring Code Canvas

    • 6 Comments
    Introduction I originally started working on Code Canvas back in 2007, but it was essentially put on hold after 2009 because the technology to make it testable in the field was not available.  For example, Visual Studio at the time did not support...
  • Kael Rowan

    Code Canvas vs. Code Bubbles vs. Debugger Canvas

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    You may have seen my previous comparison of Code Canvas vs. Diagrams/Visualizations , but sometimes people also ask me “What is the relationship between Code Canvas and Debugger Canvas?”, or “Is Debugger Canvas the same as Code Bubbles?”.  Here are...
  • Kael Rowan

    Debugger Canvas 1.1 is Released!

    • 4 Comments
    Hi everyone, we are pleased to announce the release of Debugger Canvas version 1.1 . This version includes a number of bug fixes, new features, and improves performance. Some of the new features are: - Easily turn Debugger Canvas on or off, even in the...
  • Kael Rowan

    Debugger Canvas Available for Download!

    • 8 Comments
    I’m pleased to announce that Debugger Canvas is available for download on DevLabs ! Debugger Canvas is a Power Tool for Visual Studio 2010 SP1 that pulls together the code you’re exploring onto a single pan-and-zoom display. As you hit breakpoints...
  • Kael Rowan

    Introducing Debugger Canvas

    • 47 Comments
    Over the past several months I’ve been working on a new Power Tool for Visual Studio with Andrew Bragdon and Brown University .  The purpose of the power tool is to get feedback from users (that means you!) about using a Code Bubbles like experience...
  • Kael Rowan

    ZoomableApplication3: When not to ApplyTransform

    • 12 Comments
    By default, ZoomableCanvas works by coercing its RenderTransform to be a combination of a ScaleTransform and a TranslateTransform representing the current Scale and Offset , respectively. This is the most performant mode in WPF, and makes your UIElement...
  • Kael Rowan

    ZoomableApplication2: A Million Items

    • 17 Comments
    The original sample for Chris Lovett’s VirtualCanvas showed a random set of shapes on a canvas. You could use a menu to choose whether to have 5, 500, 12500, or 50000 shapes “on the canvas”. I use quotation marks because the point of...
  • Kael Rowan

    ZoomableApplication1: Scale and Offset

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    For the first entry in the series of examples using the ZoomableCanvas , I’ll start off with just the basics: Scale and Offset . I’ll start by creating a brand new app, renaming it from WpfApplication1 to ZoomableApplication1, and adding a...
  • Kael Rowan

    ZoomableCanvas

    • 5 Comments
    ZoomableCanvas is the Panel that displays almost all of the elements in Code Canvas . Code Canvas is actually made up of several layers of ZoomableCanvas es that are stacked on top of each other, and they are synchronized by simply sharing the same values...
  • Kael Rowan

    ZoomableCanvas: Preface

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    When I started writing Code Canvas back in 2008, I quickly realized that using a simple ScaleTransform on an existing Canvas would not produce the experience that I wanted. This was mostly because the elements on my canvas have many fine details such...
  • Kael Rowan

    Code Canvas @ ICSE 2010

    • 2 Comments
    Code Canvas is being shown by Rob DeLine at the 32nd International Conference on Software Engineering this week, in Cape Town, South Africa. The demonstration will show Code Canvas being hosted inside Visual Studio 2010, along with a new visual style...
  • Kael Rowan

    LinkedList.FindNext and FindPrevious

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    The generic collections in the .NET framework do a good job of hiding algorithmic details and instead let you focus on the purpose of a class instead of how it’s implemented.  For example, instead of using a Hashtable you use a Dictionary . ...
  • Kael Rowan

    Code Canvas @ TechFest

    • 3 Comments
    In honor of today's historic date of breaking down walls, I'm posting a recording of the live presentation of Code Canvas given at the 2009 Microsoft Research TechFest event on the Microsoft campus in Redmond, WA. This video demonstrates some of the...
  • Kael Rowan

    PriorityQuadTree

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    Chris Lovett has a written a cool Virtualized WPF Canvas that lets you pan and zoom around a huge canvas full of shapes, and it only creates those shapes which can be seen on your screen at the time (i.e. within your viewbox of the canvas).  As you...
  • Kael Rowan

    Code Canvas @ Lang.NET Symposium

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    Microsoft recently hosted the 2009 Lang.NET Symposium here in the Microsoft Research building. A colleague of mine, Herman Venter , asked me to show off a demo of Code Canvas during his Common Compiler Infrastructure talk, and the video is available online...
  • Kael Rowan

    VirtualPanel

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    Virtualization, according to the documentation for WPF’s built-in VirtualizingStackPanel , refers to a technique by which a subset of user interface (UI) elements are generated from a larger number of data items based on which items are visible on-screen...
  • Kael Rowan

    Rect.Intersects and IsDefined

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    When working on the PriorityQuadTree , most of the code I was reading and writing revolved around rectangle intersection.  Rect defines an IntersectsWith method, but it doesn’t work with rectangles that are infinitely wide or tall like new Rect ...
  • Kael Rowan

    Code Canvas vs. Diagrams/Visualizations

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    Software is usually created by typing source code into a text editor, yet the current solution for understanding complex software systems is usually to generate a diagram* or visualization* that exists independently from the original source code text...
  • Kael Rowan

    Softpedia article on Code Canvas

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    Wow, I’m impressed with how fast the word is getting out.  Marius Oiaga already published an article on Softpedia: “What if code could leave the boundaries of the traditional editors, and call home an infinite two-dimensional surface as a new spatial...
  • Kael Rowan

    Code Canvas

    • 20 Comments
    I’ve been working in Microsoft Research on a project called Code Canvas for a while now, and we finally got through enough of the patent process so that I’m able to release some details publically. Code Canvas is a research prototype focused on spatial...
  • Kael Rowan

    InlineVSPaste

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    There’s a great plugin for Windows Live Writer called VSPaste by Douglas Stockwell: http://www.11011.net/software/vspaste . It lets you copy and paste syntax-highlighted code from Visual Studio into your blog post while retaining the coloring and formatting...
  • Kael Rowan

    Blog Resurrection

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    Sometimes in the course of software development it becomes best to start over from scratch. I'm taking this approach with my blog. I first joined Microsoft in 2000 as part of the Windows XP Embedded group. In 2004 I joined the Windows Driver Foundation...
  • Kael Rowan

    Snapshooter

    • 2 Comments
    I’ve been working on a very large-scale canvas application for a while now, and I finally checked in the first working prototype today.   The biggest challenge for this application is that the elements on the canvas are very rich.  They...
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