1.9 KiB
swinging-needle-meter
A re-frame application designed to display an example swinging needle meter, as an experiment in animating SVG from re-frame. Draws heavily on re-com.
Works well in Chrome and Firefox; not tested in Internet Exploder.
Intended uses
This is a component for a console, typically one controlling a technical or scientific instrument. It is by design flexible and configurable. Minimum value, maximum value, warning value and number of gradations shown are all configurable, as are (obviously) styles.
A cursor will be shown if the value of setpoint is between min-value and max-value; setpoint is a dynamic value which is watched during the run. While the model value is within +- tolerance of the setpoint value, a class target-class is set on the meter indicating an on-target status (by default the frame goes green).
A red-zone may be shown if a warn-value is set which is between min-value and max-value. If such a warn-value is set, then if the current value (model) exceeds warn-value, a class warning-class is set on the meter indicating a warning status (by default the frame goes maroon).
Development Mode
Run application:
lein clean
lein figwheel dev
Figwheel will automatically push cljs changes to the browser.
Wait a bit, then browse to http://localhost:3449.
Production Build
To compile clojurescript to javascript:
lein clean
lein cljsbuild once min
License
Copyright © 2017 Simon Brooke. Licensed under the GNU General Public License, version 2.0 or (at your option) any later version. If you wish to incorporate parts of Smeagol into another open source project which uses a less restrictive license, please contact me; I'm open to dual licensing it.