components/calc/models.vue

@@ -3,6 +3,9 @@ import { TresCanvas } from '@tresjs/core'
 import { Stats, OrbitControls } from '@tresjs/cientos'
 import { degToRad } from 'three/src/math/MathUtils.js';
 
+const container = ref<HTMLElement | null>(null);
+const { isIntersecting, startObserver, stopObserver } = useSceneVisibility();
+
 const controlsState = reactive({
     position: { x: 0, y: 0, z: 0 },
     enablePan: false,
@@ -17,9 +20,21 @@ const cameraStat = reactive({
     aspect: 1920 / 600,
     // fov: 40,
 })
+const renderMode = computed(() => (isIntersecting.value ? 'always' : 'manual'));
+
+onMounted(async () => {
+    if (container.value) {
+        await nextTick()
+        startObserver(container.value);
+    }
+});
+
+onBeforeUnmount(() => {
+    stopObserver();
+});
 </script>
 <template>
-    <div class="calc">
+    <div class="calc" ref="container">
         <ClientOnly fallback-tag="div">
             <template #fallback>
                 <div class="fallback">
@@ -27,9 +42,12 @@ const cameraStat = reactive({
                 </div>
             </template>
             <Loader />
-            <Scene :canvasProps="{ clearColor: '#e2e8f0' }">
+            <TresCanvas clear-color="#e2e8f0" :render-mode="renderMode" :key="renderMode">
                 <TresPerspectiveCamera v-bind="cameraStat" ref="camera" />
                 <OrbitControls v-bind="controlsState" make-default />
+                <Suspense>
+                    <ModelEnv />
+                </Suspense>
                 <Suspense>
                     <ModelSmoothCamera />
                 </Suspense>
@@ -38,7 +56,7 @@ const cameraStat = reactive({
                         <ModelParametric />
                     </Suspense>
                 </TresGroup>
-            </Scene>
+            </TresCanvas>
         </ClientOnly>
     </div>
 </template>

components/expDiagram.vue

@@ -3,6 +3,9 @@ import { TresCanvas } from '@tresjs/core'
 import { OrbitControls } from '@tresjs/cientos'
 import { Vector3 } from 'three';
 
+const container = ref<HTMLElement | null>(null);
+const { isIntersecting, startObserver, stopObserver } = useSceneVisibility();
+
 const camera = ref()
 const controls = ref()
 const controlsState = reactive({
@@ -25,20 +28,39 @@ const changeDistance = (v = 1) => {
         camera.value.position.normalize().multiplyScalar(r)
     }
 }
+
+const renderMode = computed(() => (isIntersecting.value ? 'always' : 'manual'));
+
+onMounted(async () => {
+    if (container.value) {
+        await nextTick()
+        startObserver(container.value);
+    }
+});
+
+onBeforeUnmount(() => {
+    stopObserver();
+});
 </script>
 <template>
-    <div class="h-96 relative">
+    <Suspense>
+        <div ref="container" class="h-96 relative">
             <ClientOnly fallback-tag="div">
                 <template #fallback>
                     <div class="fallback">
                         Загрузка 3D модели
                     </div>
                 </template>
-            <Scene :canvasProps="{ height: '600' }">
+                <TresCanvas height="600" :render-mode="renderMode" :key="renderMode">
                     <TresPerspectiveCamera :position="[-7, 2, 4]" ref="camera" />
                     <OrbitControls v-bind="controlsState" ref="controls" make-default />
+                    <Suspense>
+                        <ModelEnv />
+                    </Suspense>
+                    <Suspense>
                         <ModelDiagram />
-            </Scene>
+                    </Suspense>
+                </TresCanvas>
             </ClientOnly>
             <div class="canvas-icons">
                 <a href="#" @click.prevent="toggleExpState">
@@ -55,6 +77,7 @@ const changeDistance = (v = 1) => {
                 </a>
             </div>
         </div>
+    </Suspense>
 </template>
 
 <style scoped>

components/model/env.vue

@@ -18,6 +18,7 @@ renderer.value.shadowMap.type = PCFSoftShadowMap
 
 const pmremGenerator = new PMREMGenerator(renderer.value);
 pmremGenerator.compileEquirectangularShader();
+
 onMounted(async () => {
     const loader = new GainMapLoader(renderer.value)
     const result = await loader.loadAsync([
@@ -35,7 +36,7 @@ onMounted(async () => {
     scene.value.environmentIntensity = 1.25
     scene.value.environmentRotation.z = 0.25
     result.renderTarget.texture.dispose();
-})
+
     onBeforeRender(() => {
         if (camera.value) {
             const cameraDirection = new Vector3()
@@ -44,5 +45,6 @@ onBeforeRender(()=>{
             scene.value.environmentRotation.z = angle + 0.25
         }
     })
+})
 </script>
 <template></template>

composables/useSceneVisibility.ts

@@ -0,0 +1,57 @@
+// useSceneVisibility.ts
+import { ref, onMounted, onBeforeUnmount } from 'vue';
+
+export function useSceneVisibility() {
+    const isIntersecting = ref(false); // Состояние видимости
+    let observer: IntersectionObserver | null = null;
+    let debounceTimeout: ReturnType<typeof setTimeout> | null = null;
+
+    const startObserver = (element: HTMLElement) => {
+        observer = new IntersectionObserver(
+            (entries) => {
+                entries.forEach((entry) => {
+                    if (debounceTimeout) {
+                        clearTimeout(debounceTimeout); // Очищаем предыдущий таймер
+                    }
+
+                    // Устанавливаем новый таймер
+                    debounceTimeout = setTimeout(() => {
+                        isIntersecting.value = entry.isIntersecting;
+                    }, 100); // Задержка в 300 мс
+                });
+            },
+            { threshold: 0.05 } // Порог видимости
+        );
+
+        if (element) {
+            observer.observe(element);
+        }
+    };
+
+    const stopObserver = () => {
+        if (observer) {
+            observer.disconnect();
+            observer = null;
+        }
+
+        if (debounceTimeout) {
+            clearTimeout(debounceTimeout); // Очищаем таймер при остановке наблюдателя
+            debounceTimeout = null;
+        }
+    };
+
+    onMounted(() => {
+        // Инициализация наблюдателя при монтировании
+    });
+
+    onBeforeUnmount(() => {
+        // Очистка наблюдателя при размонтировании
+        stopObserver();
+    });
+
+    return {
+        isIntersecting,
+        startObserver,
+        stopObserver,
+    };
+}

nuxt.config.ts

@@ -51,9 +51,9 @@ export default defineNuxtConfig({
   vite: {
     assetsInclude: ['**/*.glb', '**/*.gltf'],
     build: {
-      target: 'esnext'
+      target: 'esnext',
       // minify: 'esbuild'
-      // minify: false
+      minify: false,
     },
   },
   robots: {

pages/index.vue

@@ -133,7 +133,9 @@ watch(openTab, () => {
             </div>
             <div class="container gap-4">
                 <div class="col-span-full xl:col-span-8">
+                    <Suspense>
                         <ExpDiagram />
+                    </Suspense>
                 </div>
                 <div class="col-span-full xl:col-span-4 prose">
                     <span v-html="advantagesText"></span>