added billboard matrices, better comment s

Author: phantom22

README.md

@@ -4,6 +4,7 @@ This module implements essential data structures for 3D environments, including
 
 It efficiently computes:
 - Rotation matrices/quaternions for any XYZ-order Euler angles.
+- Billboard matrices both fixed axis-rotation and spherical.
 - Transformation matrices for scaling, rotation (Euler angles), and translation.
 - Transformation matrices from rotation matrices or quaternions.
 - View matrices.

example/README.md

@@ -2,7 +2,8 @@
 
 This code structure is based on the [webgl2examples](https://github.com/tsherif/webgl2examples) repository, specifically from the `cube.html` file.
 
-This example can run without a localhost environment by converting texture images into base64 data URIs. These URIs are loaded dynamically using an `img` element and the `onload()` event.
+This example can run without a localhost environment by converting texture images into base64 data URIs. These URIs are loaded dynamically using an `img` element and the `onload()` event;
+the same applies to the wasm binaries.
 
 While using `fetch()` would provide a cleaner solution, this method is necessary for proper functionality when running as a local `.html` file.