Writing documentation and watching game 7 of the World Series tonight.

New blog post about the development of Radical Pie: terathon.com/blog/radical...

About two months from now, I'll be showing Radical Pie at the Joint Mathematics Meetings in Washington, D.C. I already have the best booth location on the exhibit floor. jointmathematicsmeetings.org/jmm

With a couple quick color changes, Radical Pie runs in dark mode.

I am excited to announce the release of Radical Pie, version 1.0! This is the professional equation typesetting application that I've been working on for the last year. See the website for details. radicalpie.com

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Radical Pie has a gazillion typesetting parameters that you can fine-tune to your heart's content. Here's all the stuff you can tweak for parentheses, brackets, braces, etc.

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When I wrote PGA Illuminated, I had to paste an equation in Illustrator to draw highlights and annotations like these. Not any more. With Radical Pie, they get drawn directly in the equation editor, they auto-resize during edits, and everything stays live when embedding in Word.

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The Radical Pie editor has 16 palettes across the top containing just over 600 common symbols and mathematical structures. (The entirety of Unicode can be accessed through a separate dialog.) radicalpie.com

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Radical Pie has a large number of user-configurable parameters that control precise spacing, positioning, sizing, and various shapes (like arrowheads) in an equation. The final count is 335, and they can all be set in 23 different panels shown in a couple big dialog boxes.

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Some people are particular about how much their integrals lean forward. Radical Pie is going to let you choose whatever angle you want, and it will generate the corresponding Bézier curves. These examples range from −2.5° to 15° right of vertical through the center.

I'm getting valuable feedback from the Radical Pie beta test. Some minor bugs have been discovered. No major issues. It's looking good!

Here's a quick video showing an equation being entered into Radical Pie, an annotation being attached to that equation, and more annotations being attached to the first annotation.

Radical Pie has entered beta testing! I expect the final release to be available by the end of October.

I'm adding a last-minute new feature to Radical Pie: automatic conversion of Office Math equations.

I started working on Radical Pie one year ago today. I estimate I've spent fully 10 of the past 12 months working on it, and I've written 82K lines of new code. I expect it to be feature complete and in beta testing this month. It's exciting to be this close to launch! radicalpie.com

I'm finishing up a bunch of odds and ends in the Radical Pie equation editor. Yesterday, it was camera repositioning code used to reveal the caret when an edit is being made outside the viewport and to autoscroll while dragging the mouse for selections and drawing tools.

All of the rendering in Radical Pie is done by Slug, so I capped the zoom magnification at one million percent.

Combined, FGED 1 and 2 contain 5503 individual equation objects that I originally made in MathType years ago. Some of them had to go through Illustrator because they contained additional graphics and annotations (Figure 1.5 and Equation (1.78), for example).

The drawing and annotation tools in Radical Pie are finished! Now, I can type an equation and add highlighting, arrows, labels, etc., as shown in the following examples. All drawing objects are attached to anchor points in the equation, so they move and resize dynamically.

I was pleasantly surprised to see Happy Gilmore correctly account for the Coriolis force on the last hole!

We're happy to announce we have a new Editor-in-Chief, Alexander Wilkie, and two new editors, Johannes Schudeiske and Andrea Weidlich. Marc Olano continues on as Managing Editor. And, thanks to David Eberly, who has retired as an editor. The full roster is at jcgt.org

I've been making a special font for Radical Pie. It started out as a way to provide a handful of symbols that aren't in Unicode. As I grew annoyed by errors, inconsistent weights, and missing glyphs in existing fonts, I kept creating more glyphs for my own. It's up to 463 now!

Radical Pie has 16 palettes containing mathematical symbols and various typographic structures. Let me know if you think there should be anything else available here for quick access.

Annika Oehri, Philipp Herholz, and Olga Sorkine-Hornung, Higher Order Continuity for Smooth As-Rigid-As-Possible Shape Modeling jcgt.org/published/00...

All the beautiful font rendering and exquisite typography in DOOM The Dark Ages came from the Slug Library. I'm excited that it's part of game!

I'm surprised to see 4K monitors still under 5% in the Valve Hardware Survey. store.steampowered.com/hwsurvey/Ste...

I wrote a new blog post about something I'm calling the transwedge product. It allows us to fully decompose the geometric product into discrete parts using the primitive operations of the exterior algebra. terathon.com/blog/transwe...

I decided to downgrade from D3D12 to D3D11 in Radical Pie. D3D12 was overkill for an equation editor that's just rendering text and vector graphics (with Slug). Plus, some older GPUs can run RP just fine, but won't work with D3D12. The core rendering code shrank by 46%.

Slug version 7.4 has been released. This update includes several small feature improvements. sluglibrary.com

An electronic edition of PGA Illuminated is now available here: www.amazon.com/dp/B0F7FZLNV...

The mathematical typesetting parts of Radical Pie are now 100% feature complete. I still need to implement the drawing tools and finish a bunch of UI features. Then it'll be time for a beta release. radicalpie.com

I finished implementing stretchable arrows in Radical Pie today. I may have gone a little nuts with the features, but they turned out really well.

What I ended up doing was transforming axis-aligned rectangles into a pair of overlapping pentagons arranged like this. It renders without artifacts and fools both Acrobat and Chrome so we get a consistent appearance. Equations in PDFs look nicer as a result.

Radical Pie is designed to be extremely configurable so users can adjust the size and spacing of all kinds of equation components to their liking.

Adobe Acrobat and the Google Chrome PDF viewer both have an annoying "feature" that detects axis-aligned rectangles in a vector image and renders them with control points snapped to the pixel grid.

I got a shiny new button for Radical Pie in the Word UI.

Good implementations of wide tilde marks have always been hard to find. And good luck if you want a wide tilde *under* an expression (which I sometimes do). Here's a comparison of wide tildes produced by various equation editors that highlights the differences in quality.

A couple weeks ago, I implemented a large variety of wide accent marks in Radical Pie. These all stretch arbitrarily to the width of the enclosed expression. There is some limited font support for this, but it doesn't work very well, so Radical Pie always synthesizes its own Bézier curves.

TeX has a tool called a vphantom that let's you add an invisible structure to an equation that takes up no horizontal space but takes up exactly as much vertical space as it would if it were visible. This is very useful for aligning different parts of an equation for aesthetic purposes.

I spent the day converting my old master's thesis in mathematics from LaTeX to Radical Pie. It proved to be a very informative exercise that led me to make several nice improvements in the software. You can see the final result here: terathon.com/lengyel/Leng...