frame-delta
Utility for counting frame time and frames per interval.
Usage
Install
npm install frame-delta --save
Code
var FrameDelta = FrameDelta;var sleep = ; // Create a new `FrameDelta` instance and tell it that we are aiming for// 30 FPS. The `1000` (given to the constructor in the line below) is the// interval (in milliseconds) that we want the `FrameDelta` to update its// FPI.var frames = 1000;framestargetFPI = 30; // Enter a render/update loop.while windowIsOpen ; ; // We can get the frames per interval (FPI) and frame time from the // instance. These values will be `0` the first time we print them, as // it takes at least one render/update loop iteration before these values // can be determined. console; console; // Based on the current frame time (duration between last two frame // updates), the `FrameDelta` instance will suggest the optimal amount // of time we can suspend the thread so we don't hammer the CPU, whilst // still allowing us to get our target FPI. await ; // Tell the instance that the frame is over. thisframes;
Build
frame-delta
is built using gulp
. You can invoke the build process by using
either gulp
directly, or via an npm script which calls gulp
. (Basically,
both the npm script and the gulp
command do exactly the same thing.)
npm run build // Or gulp build
License
See the LICENSE
file for license information.