Merge pull request #45 from sylturner/syl/trail-rate

Trailing Cursor: Options to change the rate and image

readme.md

@@ -115,10 +115,10 @@ The cursor won't display if the user's system accessibility settings have [prefe
 
 ### trailingCursor
 
-You can change the number of trail steps in `trailingCursor` with the `particles` option (a number)
+You can change the number of trail steps in `trailingCursor` with the `particles` option (a number), the rate of the trail with the `rate` option (a number between 0 and 1, default is `0.4`), and the trailing cursor image with the `baseImageSrc` option (a URL or base64 string)
 
 ```js
-new cursoreffects.trailingCursor({ particles: 15 });
+new cursoreffects.trailingCursor({particles: 15, rate: 0.8, baseImageSrc: "data:image/png;base64,iVB..."});
 ```
 
 You can change the color of the following dot in `followingDotCursor` with the `color` option (hex)

src/trailingCursor.js

@@ -12,11 +12,12 @@ export function trailingCursor(options) {
   let canvas, context, animationFrame;
 
   const totalParticles = options?.particles || 15;
+  const rate = options?.rate || 0.4;
+  const baseImageSrc = options?.baseImageSrc || "data:image/png;base64,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";
   let cursorsInitted = false;
 
   let baseImage = new Image();
-  baseImage.src =
-    "data:image/png;base64,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";
+  baseImage.src = baseImageSrc;
 
   const prefersReducedMotion = window.matchMedia(
     "(prefers-reduced-motion: reduce)"
@@ -115,8 +116,8 @@ export function trailingCursor(options) {
       particle.position.x = x;
       particle.position.y = y;
       particle.move(context);
-      x += (nextParticle.position.x - particle.position.x) * 0.4;
-      y += (nextParticle.position.y - particle.position.y) * 0.4;
+      x += (nextParticle.position.x - particle.position.x) * rate;
+      y += (nextParticle.position.y - particle.position.y) * rate;
     });
   }