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This app demonstrates my new triangulated 3D font library. It lets you dynamically adjust various font parameters including different shapes, spacings and extrusions. Use the sliders and controls in the top-left of the app to interactively change settings. If you are keen, you can also enter your own text and export the resulting geometry as an OBJ, STL or PLY file.
I wrote this because I really needed to see and experiment with various font shapes, and to thoroughly stress test and optimise the code. Also, code-based unit tests can't really give the same qualitative feedback as actually seeing what example text looks like as various metrics are dynamically adjusted.
Whilst the typical approach to 3D text is to texture map font glyphs onto transparent flat surfaces, this is tricky to get looking good and not totally suited to the kinds of model annotation I need/want to be doing.
I was using using my own line-based vector font library for annotating things, however Chrome version 57 onwards stopped supporting line widths greater than 1 pixel in WebGL on all platforms, regardless of the capabilities of the underlying graphics hardware. As Chrome is one of the most popular browsers at the moment, and single pixel lines on retina and other high resolution displays can barely be seen, I needed to sort something out quickly.
Designing a dynamic 3D font is way harder than it looks. There are still a few configurations of stroke thickness and aspect ratio that cause same self-intersection in one or two glyphs, however on the whole I'm pretty happy with the results. Moreover, it has proved surprisingly fast and quite memory efficient.
You can interactively adjust the 3D view of the model using a mouse, pen or stylus, or by touch on a tablet or phone. You can also use the items in the 3D View Settings popup.
NOTE: You can use the Shift and Ctrl/Meta keys to adjust the increment of each scroll event or key press.
The Shift and Ctrl/Meta keys are used pretty extensively to modify interactive data entry. This applies to all increment buttons, scroll wheel motion, slider controls and input elements.
NOTE: You can use the scroll wheel to edit a data value when hovering over any slider, numeric input or even table rows that indicate their editibility.
This page uses the following frameworks/components:
Copyright © 2011-2015 Twitter, Inc. - github.com/twbs,
Copyright © 2014, Kartik Visweswaran, Krajee.com,
Copyright © jQuery Foundation and other contributors,
Copyright © 2015 Jos de Jong - github.com/josdejong
Copyright © 2011 Bruno Jouhier - github.com/Sage
Copyright © Steven Sanderson and the Knockout.js team,
Copyright © 2013 Artem Stepanyuk - github.com/faulknercs,
Copyright © 2011 by Evan Wallace - https://github.com/evanw
Leaflet Maps API v1.4.0
Copyright © Cloudmade, Vladimir Agafonkin - github.com/Leaflet,
OpenStreetMap Map Data
Copyright © OpenStreetMap contributors - openstreetmap.org,
Copyright © 2014 Federico Zivolo - github.com/FezVrasta