The canvas animation in Angular with PlanetaryJS experiences glitches when switching between views

Currently, I have integrated planetaryjs into an Angular directive.

Initially, the planetary rotation animation operates smoothly when the page loads. However, upon switching views and returning to the planetary animation, it starts to stutter.

Check out this Plunker demonstrating the issue.

Does anyone have any suggestions on how to resolve this problem?

Answer №1

Whenever you switch back and forth between the planetary view, view-planetary.html is unloaded and loaded again. However, the plantery.js event (planet.draw(canvas)) in your link function remains in memory, resulting in flickering due to multiple instances of planet.draw running simultaneously. To resolve this issue (which is a common oversight, especially when binding external events that Angular is unaware of), it is necessary to monitor the $destroy event on the element (canvas). Insert the following code inside a link method of the planetary directive.

  element.on('$destroy', function() {
     // I couldn't locate the destroy method to unload the planet in planetary.js
     // If you find it, insert it here
     // For example, planet.destroy(canvas);
  });

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