Add theme_3d_systems/static/src/js/three/three_core_loader.js

theme_3d_systems/static/src/js/three/three_core_loader.js

@@ -0,0 +1,42 @@
+/** @odoo-module **/
+
+/**
+ * Three.js Dynamic Lazy Loader for Odoo 19
+ * Loads Three.js on demand without blocking critical page rendering.
+ */
+let threePromise = null;
+
+export async function loadThree() {
+    if (window.THREE) {
+        return window.THREE;
+    }
+    if (threePromise) {
+        return threePromise;
+    }
+
+    threePromise = new Promise((resolve, reject) => {
+        const script = document.createElement('script');
+        script.src = 'https://cdnjs.cloudflare.com/ajax/libs/three.js/r128/three.min.js';
+        script.crossOrigin = 'anonymous';
+        script.onload = () => {
+            if (window.THREE) {
+                resolve(window.THREE);
+            } else {
+                reject(new Error('Three.js failed to load properly.'));
+            }
+        };
+        script.onerror = () => reject(new Error('Network error loading Three.js'));
+        document.head.appendChild(script);
+    });
+
+    return threePromise;
+}
+
+export function isWebGLSupported() {
+    try {
+        const canvas = document.createElement('canvas');
+        return !!(window.WebGLRenderingContext && (canvas.getContext('webgl') || canvas.getContext('experimental-webgl')));
+    } catch (e) {
+        return false;
+    }
+}