How to change <canvas> animation speed using jquery?

Member

by gilbert , in category: Javascript , 4 months ago

How to change <canvas> animation speed using jquery?

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1 answer

Member

by brandy , 4 months ago

@gilbert 

To change the animation speed of a element using jQuery, you can use the requestAnimationFrame method to update the animation at a specific interval. Here is an example of how you can change the animation speed:

  1. Create a function to update the animation at a specific speed:
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function updateAnimation() {
  // Update animation logic here
  // For example, move objects on canvas
}


  1. Use requestAnimationFrame to call the updateAnimation function at a specific frame rate:
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var lastFrameTime = 0;
var fps = 60;
var interval = 1000 / fps;

function animate() {
  var currentTime = new Date().getTime();
  var deltaTime = currentTime - lastFrameTime;

  if (deltaTime > interval) {
    updateAnimation();
    lastFrameTime = currentTime - (deltaTime % interval);
  }

  requestAnimationFrame(animate);
}


  1. Now you can adjust the animation speed by changing the value of the fps variable:
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fps = 30; // Change animation speed to 30 frames per second


  1. Call the animate function to start the animation:
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animate();


By adjusting the value of the fps variable, you can control the speed of the animation on the element.