Switch to SOG format for splats (#194)

Author: willeastcott

examples/assets/splats/angel.compressed.ply

@@ -21,7 +21,7 @@
             <pc-asset src="../node_modules/playcanvas/scripts/esm/xr-controllers.mjs"></pc-asset>
             <pc-asset src="../node_modules/playcanvas/scripts/esm/xr-navigation.mjs"></pc-asset>
             <pc-asset src="../node_modules/playcanvas/scripts/esm/xr-session.mjs"></pc-asset>
-            <pc-asset src="assets/splats/angel.compressed.ply" id="angel"></pc-asset>
+            <pc-asset src="assets/splats/angel.sog" id="angel"></pc-asset>
             <pc-asset src="assets/skies/sepulchral-chapel-rotunda-4k.webp" id="rotunda"></pc-asset>
             <!-- Scene -->
             <pc-scene>
@@ -49,7 +49,7 @@
                     </pc-scripts>
                 </pc-entity>
                 <!-- Statue -->
-                <pc-entity name="statue" position="0 1 0" rotation="0 45 0">
+                <pc-entity name="statue" position="0 1 0" rotation="0 -45 180">
                     <pc-splat asset="angel"></pc-splat>
                 </pc-entity>
             </pc-scene>

examples/assets/splats/angel.sog

@@ -21,7 +21,7 @@
             <pc-asset src="assets/scripts/tweener.mjs"></pc-asset>
             <pc-asset src="assets/scripts/video-recorder.mjs"></pc-asset>
             <pc-asset src="assets/scripts/video-recorder-ui.mjs"></pc-asset>
-            <pc-asset src="assets/splats/biker.compressed.ply" id="biker"></pc-asset>
+            <pc-asset src="assets/splats/biker.sog" id="biker"></pc-asset>
             <!-- Scene -->
             <pc-scene>
                 <!-- Camera -->

examples/assets/splats/biker.compressed.ply

@@ -17,6 +17,7 @@ const extToType = new Map([
     ['mjs', 'script'],
     ['ply', 'gsplat'],
     ['png', 'texture'],
+    ['sog', 'gsplat'],
     ['txt', 'text'],
     ['vert', 'shader'],
     ['webp', 'texture']