diff --git a/src/components/misc/Stats.js b/src/components/misc/Stats.js
index 774aad8..29ddffa 100644
--- a/src/components/misc/Stats.js
+++ b/src/components/misc/Stats.js
@@ -1,11 +1,12 @@
 import Stats from 'stats.js'
+import { RendererInjectionKey } from '../../core/Renderer'
 
 export default {
   props: {
     noSetup: { type: Boolean, default: false },
   },
   emits: ['created'],
-  inject: ['renderer'],
+  inject: { renderer: RendererInjectionKey },
   setup({ noSetup }) {
     const stats = new Stats()
     if (!noSetup) {
diff --git a/src/components/physics/CannonWorld.js b/src/components/physics/CannonWorld.js
index adb0b4c..68f415e 100644
--- a/src/components/physics/CannonWorld.js
+++ b/src/components/physics/CannonWorld.js
@@ -1,9 +1,13 @@
 import { defineComponent } from 'vue'
 import useCannon from './useCannon.js'
-// import { bindProp } from '../../tools';
+import { RendererInjectionKey } from '../../core/Renderer'
+import { SceneInjectionKey } from '../../core/Scene'
 
 export default defineComponent({
-  inject: ['renderer', 'scene'],
+  inject: {
+    renderer: RendererInjectionKey,
+    scene: SceneInjectionKey,
+  },
   props: {
     gravity: { type: Object, default: () => ({ x: 0, y: 0, z: -9.82 }) },
     broadphase: { type: String },
diff --git a/src/core/Camera.ts b/src/core/Camera.ts
index 164eccd..e6df469 100644
--- a/src/core/Camera.ts
+++ b/src/core/Camera.ts
@@ -1,21 +1,22 @@
-import { defineComponent, inject } from 'vue'
-import { RendererInterface } from './Renderer'
+import { defineComponent } from 'vue'
+// import { Camera } from 'three'
+// import { RendererInjectionKey, RendererInterface } from './Renderer'
 // import Object3D from './Object3D'
 
+// export interface CameraSetupInterface {
+//   renderer?: RendererInterface
+//   camera: Camera
+// }
+
 export default defineComponent({
   // TODO: eventually extend Object3D
   // extends: Object3D,
 
-  // don't work with typescript, bug ?
-  // but works in sub components (injection, not typescript)
-  inject: ['renderer'],
+  // inject: { renderer: RendererInjectionKey as symbol },
 
-  setup() {
-    // this works with typescript in sub component
-    // but setup is not called
-    const renderer = inject('renderer') as RendererInterface
-    return { renderer }
-  },
+  // setup(): CameraSetupInterface {
+  //   return {}
+  // },
 
   render() {
     return this.$slots.default ? this.$slots.default() : []
diff --git a/src/core/Object3D.ts b/src/core/Object3D.ts
index edf312d..d6be10c 100644
--- a/src/core/Object3D.ts
+++ b/src/core/Object3D.ts
@@ -1,11 +1,12 @@
 import { Object3D, Scene } from 'three'
-import { ComponentPublicInstance, defineComponent, inject, PropType, watch } from 'vue'
+import { ComponentPublicInstance, defineComponent, PropType, watch } from 'vue'
 import { bindProp } from '../tools'
-import { RendererInterface } from './Renderer'
+import { RendererInjectionKey, RendererInterface } from './Renderer'
+import { SceneInjectionKey } from './Scene'
 
 export interface Object3DSetupInterface {
-  renderer: RendererInterface
-  scene: Scene
+  renderer?: RendererInterface
+  scene?: Scene
   o3d?: Object3D
   parent?: ComponentPublicInstance
 }
@@ -17,11 +18,11 @@ export interface Object3DInterface extends Object3DSetupInterface {
   remove(o: Object3D): void
 }
 
-export function object3DSetup(): Object3DSetupInterface {
-  const renderer = inject('renderer') as RendererInterface
-  const scene = inject('scene') as Scene
-  return { scene, renderer }
-}
+// export function object3DSetup(): Object3DSetupInterface {
+//   const renderer = inject(RendererInjectionKey)
+//   const scene = inject(SceneInjectionKey)
+//   return { scene, renderer }
+// }
 
 export interface Vector2PropInterface {
   x?: number
@@ -38,7 +39,11 @@ export interface EulerPropInterface extends Vector3PropInterface {
 
 export default defineComponent({
   name: 'Object3D',
-  inject: ['renderer', 'scene'],
+  // inject for sub components
+  inject: {
+    renderer: RendererInjectionKey as symbol,
+    scene: SceneInjectionKey as symbol,
+  },
   emits: ['created', 'ready'],
   props: {
     position: { type: Object as PropType<Vector3PropInterface>, default: () => ({ x: 0, y: 0, z: 0 }) },
@@ -48,10 +53,17 @@ export default defineComponent({
     autoRemove: { type: Boolean, default: true },
     userData: { type: Object, default: () => ({}) },
   },
-  setup() {
-    return object3DSetup()
+  setup(): Object3DSetupInterface {
+    // return object3DSetup()
+    return {}
   },
-  computed: {
+  created() {
+    if (!this.renderer) {
+      console.error('Missing parent Renderer')
+    }
+    if (!this.scene) {
+      console.error('Missing parent Scene')
+    }
   },
   unmounted() {
     if (this.autoRemove) this.removeFromParent()
@@ -67,7 +79,6 @@ export default defineComponent({
       bindProp(this, 'scale', o3d)
       bindProp(this, 'userData', o3d.userData)
 
-      // TODO : fix lookat.x
       if (this.lookAt) o3d.lookAt(this.lookAt.x ?? 0, this.lookAt.y, this.lookAt.z)
       watch(() => this.lookAt, (v) => { o3d.lookAt(v.x ?? 0, v.y, v.z) }, { deep: true })
 
diff --git a/src/core/OrthographicCamera.ts b/src/core/OrthographicCamera.ts
index b5cc63b..783eaa8 100644
--- a/src/core/OrthographicCamera.ts
+++ b/src/core/OrthographicCamera.ts
@@ -1,8 +1,9 @@
-import { defineComponent, PropType, watch } from 'vue'
+import { defineComponent, inject, PropType, watch } from 'vue'
 import { OrthographicCamera } from 'three'
 import { bindProp } from '../tools'
 import Camera from './Camera'
 import { Vector3PropInterface } from './Object3D'
+import { RendererInjectionKey } from './Renderer'
 
 export default defineComponent({
   extends: Camera,
@@ -18,7 +19,14 @@ export default defineComponent({
     position: { type: Object as PropType<Vector3PropInterface>, default: () => ({ x: 0, y: 0, z: 0 }) },
   },
   setup(props) {
+    const renderer = inject(RendererInjectionKey)
+    if (!renderer) {
+      console.error('Renderer not found')
+      return
+    }
+
     const camera = new OrthographicCamera(props.left, props.right, props.top, props.bottom, props.near, props.far)
+    renderer.camera = camera
 
     bindProp(props, 'position', camera)
 
@@ -32,10 +40,7 @@ export default defineComponent({
       })
     })
 
-    return { camera }
-  },
-  created() {
-    this.renderer.camera = this.camera
+    return { renderer, camera }
   },
   __hmrId: 'OrthographicCamera',
 })
diff --git a/src/core/PerspectiveCamera.ts b/src/core/PerspectiveCamera.ts
index 62f1586..5147a3f 100644
--- a/src/core/PerspectiveCamera.ts
+++ b/src/core/PerspectiveCamera.ts
@@ -1,8 +1,9 @@
-import { defineComponent, PropType, watch } from 'vue'
+import { defineComponent, inject, PropType, watch } from 'vue'
 import { PerspectiveCamera } from 'three'
 import { bindProp } from '../tools'
 import Camera from './Camera'
 import { Vector3PropInterface } from './Object3D'
+import { RendererInjectionKey } from './Renderer'
 
 export default defineComponent({
   extends: Camera,
@@ -16,7 +17,14 @@ export default defineComponent({
     lookAt: { type: Object as PropType<Vector3PropInterface>, default: null },
   },
   setup(props) {
+    const renderer = inject(RendererInjectionKey)
+    if (!renderer) {
+      console.error('Renderer not found')
+      return
+    }
+
     const camera = new PerspectiveCamera(props.fov, props.aspect, props.near, props.far)
+    renderer.camera = camera
 
     bindProp(props, 'position', camera)
 
@@ -33,10 +41,7 @@ export default defineComponent({
       })
     })
 
-    return { camera }
-  },
-  created() {
-    this.renderer.camera = this.camera
+    return { renderer, camera }
   },
   __hmrId: 'PerspectiveCamera',
 })
diff --git a/src/core/Raycaster.ts b/src/core/Raycaster.ts
index e0c3d5d..f9d9efb 100644
--- a/src/core/Raycaster.ts
+++ b/src/core/Raycaster.ts
@@ -1,13 +1,13 @@
 import { Object3D } from 'three'
 import { defineComponent, inject, PropType } from 'vue'
 import usePointer, { IntersectObject, PointerInterface, PointerIntersectCallbackType } from './usePointer'
-import { RendererInterface } from './Renderer'
+import { RendererInjectionKey, RendererInterface } from './Renderer'
 
 // eslint-disable-next-line @typescript-eslint/no-empty-function
 const emptyCallBack: PointerIntersectCallbackType = () => {}
 
 interface RaycasterSetupInterface {
-  renderer: RendererInterface
+  renderer?: RendererInterface
   pointer?: PointerInterface
 }
 
@@ -22,16 +22,22 @@ export default defineComponent({
     intersectMode: { type: String, default: 'move' },
   },
   setup(): RaycasterSetupInterface {
-    const renderer = inject('renderer') as RendererInterface
+    const renderer = inject(RendererInjectionKey)
     return { renderer }
   },
   mounted() {
+    if (!this.renderer) {
+      console.error('Renderer not found')
+      return
+    }
+    const renderer = this.renderer
+
     this.renderer.onMounted(() => {
-      if (!this.renderer.camera) return
+      if (!renderer.camera) return
 
       this.pointer = usePointer({
-        camera: this.renderer.camera,
-        domElement: this.renderer.canvas,
+        camera: renderer.camera,
+        domElement: renderer.canvas,
         intersectObjects: this.getIntersectObjects(),
         onIntersectEnter: this.onPointerEnter,
         onIntersectOver: this.onPointerOver,
@@ -42,19 +48,19 @@ export default defineComponent({
       this.pointer.addListeners()
 
       if (this.intersectMode === 'frame') {
-        this.renderer.onBeforeRender(this.pointer.intersect)
+        renderer.onBeforeRender(this.pointer.intersect)
       }
     })
   },
   unmounted() {
     if (this.pointer) {
       this.pointer.removeListeners()
-      this.renderer.offBeforeRender(this.pointer.intersect)
+      this.renderer?.offBeforeRender(this.pointer.intersect)
     }
   },
   methods: {
     getIntersectObjects() {
-      if (this.renderer.scene) {
+      if (this.renderer && this.renderer.scene) {
         const children = this.renderer.scene.children.filter((c: Object3D) => ['Mesh', 'InstancedMesh'].includes(c.type))
         return children as IntersectObject[]
       }
diff --git a/src/core/Renderer.ts b/src/core/Renderer.ts
index 843a484..cdc1504 100644
--- a/src/core/Renderer.ts
+++ b/src/core/Renderer.ts
@@ -1,7 +1,7 @@
 /* eslint-disable no-use-before-define */
 import { Camera, Scene, WebGLRenderer } from 'three'
 import { EffectComposer } from 'three/examples/jsm/postprocessing/EffectComposer'
-import { defineComponent, PropType } from 'vue'
+import { defineComponent, InjectionKey, PropType } from 'vue'
 import useThree, { SizeInterface, ThreeConfigInterface, ThreeInterface } from './useThree'
 
 type CallbackType<T> = (event: T) => void
@@ -86,6 +86,8 @@ export interface RendererInterface extends RendererSetupInterface {
   removeListener<T extends keyof EventCallbackMap>(t: T, cb: EventCallbackMap[T]): void
 }
 
+export const RendererInjectionKey: InjectionKey<RendererInterface> = Symbol('Renderer')
+
 export default defineComponent({
   name: 'Renderer',
   props: {
@@ -162,7 +164,7 @@ export default defineComponent({
   },
   provide() {
     return {
-      renderer: this,
+      [RendererInjectionKey as symbol]: this,
     }
   },
   mounted() {
diff --git a/src/core/Scene.ts b/src/core/Scene.ts
index 4f2abd4..4ecfb33 100644
--- a/src/core/Scene.ts
+++ b/src/core/Scene.ts
@@ -1,33 +1,43 @@
-import { defineComponent, inject, watch } from 'vue'
-import { Scene, Color, Object3D } from 'three'
-import { RendererInterface } from './Renderer'
+import { defineComponent, inject, InjectionKey, provide, watch } from 'vue'
+import { Scene, Color, Object3D, Texture } from 'three'
+import { RendererInjectionKey } from './Renderer'
+
+export const SceneInjectionKey: InjectionKey<Scene> = Symbol('Scene')
 
 export default defineComponent({
   name: 'Scene',
   props: {
-    // id: String,
-    background: [String, Number],
+    background: [String, Number, Object],
   },
   setup(props) {
-    const renderer = inject('renderer') as RendererInterface
+    const renderer = inject(RendererInjectionKey)
     const scene = new Scene()
-    if (props.background) {
-      scene.background = new Color(props.background)
+
+    if (!renderer) {
+      console.error('Renderer not found')
+      return
     }
-    watch(() => props.background, (value) => { if (scene.background instanceof Color && value) scene.background.set(value) })
-    return { renderer, scene }
-  },
-  provide() {
-    return {
-      scene: this.scene,
+
+    renderer.scene = scene
+    provide(SceneInjectionKey, scene)
+
+    const setBackground = (value: any): void => {
+      if (!value) return
+      if (typeof value === 'string' || typeof value === 'number') {
+        if (scene.background instanceof Color) scene.background.set(value)
+        else scene.background = new Color(value)
+      } else if (value instanceof Texture) {
+        scene.background = value
+      }
     }
-  },
-  created() {
-    this.renderer.scene = this.scene
-  },
-  methods: {
-    add(o: Object3D) { this.scene.add(o) },
-    remove(o: Object3D) { this.scene.remove(o) },
+
+    setBackground(props.background)
+    watch(() => props.background, setBackground)
+
+    const add = (o: Object3D): void => { scene.add(o) }
+    const remove = (o: Object3D): void => { scene.remove(o) }
+
+    return { add, remove }
   },
   render() {
     return this.$slots.default ? this.$slots.default() : []
diff --git a/src/effects/BokehPass.ts b/src/effects/BokehPass.ts
index 649d8b9..ecd101b 100644
--- a/src/effects/BokehPass.ts
+++ b/src/effects/BokehPass.ts
@@ -12,6 +12,8 @@ export default defineComponent({
   extends: EffectPass,
   props,
   created() {
+    if (!this.renderer) return
+
     if (!this.renderer.scene) {
       console.error('Missing Scene')
       return
diff --git a/src/effects/EffectComposer.ts b/src/effects/EffectComposer.ts
index e6ea421..b615b5a 100644
--- a/src/effects/EffectComposer.ts
+++ b/src/effects/EffectComposer.ts
@@ -1,10 +1,10 @@
-import { defineComponent, inject } from 'vue'
+import { defineComponent, inject, InjectionKey } from 'vue'
 import { EffectComposer } from 'three/examples/jsm/postprocessing/EffectComposer.js'
 import { Pass } from 'three/examples/jsm/postprocessing/Pass'
-import { RendererInterface } from '../core/Renderer'
+import { RendererInjectionKey, RendererInterface } from '../core/Renderer'
 
 interface EffectComposerSetupInterface {
-  renderer: RendererInterface
+  renderer?: RendererInterface
   composer?: EffectComposer
 }
 
@@ -13,34 +13,38 @@ export interface EffectComposerInterface extends EffectComposerSetupInterface {
   removePass(pass: Pass): void
 }
 
+export const ComposerInjectionKey: InjectionKey<EffectComposerInterface> = Symbol('Composer')
+
 export default defineComponent({
   setup(): EffectComposerSetupInterface {
-    const renderer = inject('renderer') as RendererInterface
-    return {
-      renderer,
-    }
+    const renderer = inject(RendererInjectionKey)
+    return { renderer }
   },
   provide() {
     return {
-      composer: this,
+      [ComposerInjectionKey as symbol]: this,
     }
   },
   created() {
+    if (!this.renderer) {
+      console.error('Renderer not found')
+      return
+    }
+    const renderer = this.renderer
+
     const composer = new EffectComposer(this.renderer.renderer)
     this.composer = composer
     this.renderer.composer = composer
 
     // this.renderer.onInit(() => {
-    this.renderer.addListener('init', () => {
-      this.renderer.renderer.autoClear = false
+    renderer.addListener('init', () => {
+      renderer.renderer.autoClear = false
       this.resize()
-      // this.renderer.onResize(this.resize)
-      this.renderer.addListener('resize', this.resize)
+      renderer.addListener('resize', this.resize)
     })
   },
   unmounted() {
-    // this.renderer.offResize(this.resize)
-    this.renderer.removeListener('resize', this.resize)
+    this.renderer?.removeListener('resize', this.resize)
   },
   methods: {
     addPass(pass: Pass) {
@@ -50,7 +54,9 @@ export default defineComponent({
       this.composer?.removePass(pass)
     },
     resize() {
-      this.composer?.setSize(this.renderer.size.width, this.renderer.size.height)
+      if (this.composer && this.renderer) {
+        this.composer.setSize(this.renderer.size.width, this.renderer.size.height)
+      }
     },
   },
   render() {
diff --git a/src/effects/EffectPass.ts b/src/effects/EffectPass.ts
index dcb72e8..1a4a0d7 100644
--- a/src/effects/EffectPass.ts
+++ b/src/effects/EffectPass.ts
@@ -1,37 +1,42 @@
 import { Pass } from 'three/examples/jsm/postprocessing/Pass'
-import { defineComponent, inject } from 'vue'
-import { RendererInterface } from '../core/Renderer'
-import { EffectComposerInterface } from './EffectComposer'
+import { defineComponent } from 'vue'
+import { RendererInjectionKey, RendererInterface } from '../core/Renderer'
+import { ComposerInjectionKey, EffectComposerInterface } from './EffectComposer'
 
 export interface EffectSetupInterface {
-  renderer: RendererInterface
-  composer: EffectComposerInterface
+  renderer?: RendererInterface
+  composer?: EffectComposerInterface
   pass?: Pass
 }
 
 export default defineComponent({
-  inject: ['renderer', 'composer'],
+  // inject for sub components
+  inject: {
+    renderer: RendererInjectionKey as symbol,
+    composer: ComposerInjectionKey as symbol,
+  },
   emits: ['ready'],
   setup(): EffectSetupInterface {
-    const renderer = inject('renderer') as RendererInterface
-    const composer = inject('composer') as EffectComposerInterface
-    return { renderer, composer }
+    return {}
   },
   created() {
     if (!this.composer) {
       console.error('Missing parent EffectComposer')
     }
+    if (!this.renderer) {
+      console.error('Missing parent Renderer')
+    }
   },
   unmounted() {
     if (this.pass) {
-      this.composer.removePass(this.pass);
+      this.composer?.removePass(this.pass);
       (this.pass as any).dispose?.()
     }
   },
   methods: {
     initEffectPass(pass: Pass) {
       this.pass = pass
-      this.composer.addPass(pass)
+      this.composer?.addPass(pass)
       this.$emit('ready', pass)
     },
   },
diff --git a/src/effects/FXAAPass.ts b/src/effects/FXAAPass.ts
index 9a925ec..374f6c8 100644
--- a/src/effects/FXAAPass.ts
+++ b/src/effects/FXAAPass.ts
@@ -10,12 +10,12 @@ export default defineComponent({
     const pass = new ShaderPass(FXAAShader)
 
     // resize will be first called in renderer init
-    this.renderer.addListener('resize', this.resize)
+    this.renderer?.addListener('resize', this.resize)
 
     this.initEffectPass(pass)
   },
   unmounted() {
-    this.renderer.removeListener('resize', this.resize)
+    this.renderer?.removeListener('resize', this.resize)
   },
   methods: {
     resize({ size }: { size: SizeInterface }) {
diff --git a/src/effects/HalftonePass.ts b/src/effects/HalftonePass.ts
index 23c09db..00a1f6a 100644
--- a/src/effects/HalftonePass.ts
+++ b/src/effects/HalftonePass.ts
@@ -15,6 +15,8 @@ export default defineComponent({
   extends: EffectPass,
   props,
   created() {
+    if (!this.renderer) return
+
     const pass = new HalftonePass(this.renderer.size.width, this.renderer.size.height, {})
 
     Object.keys(props).forEach(p => {
diff --git a/src/effects/RenderPass.ts b/src/effects/RenderPass.ts
index f9e55bd..f91d8b9 100644
--- a/src/effects/RenderPass.ts
+++ b/src/effects/RenderPass.ts
@@ -5,6 +5,8 @@ import EffectPass from './EffectPass'
 export default defineComponent({
   extends: EffectPass,
   created() {
+    if (!this.renderer) return
+
     if (!this.renderer.scene) {
       console.error('Missing Scene')
       return
diff --git a/src/effects/SMAAPass.ts b/src/effects/SMAAPass.ts
index 5327af7..c350e97 100644
--- a/src/effects/SMAAPass.ts
+++ b/src/effects/SMAAPass.ts
@@ -5,6 +5,8 @@ import EffectPass from './EffectPass'
 export default defineComponent({
   extends: EffectPass,
   created() {
+    if (!this.renderer) return
+
     const pass = new SMAAPass(this.renderer.size.width, this.renderer.size.height)
     this.initEffectPass(pass)
   },
diff --git a/src/effects/SSAOPass.ts b/src/effects/SSAOPass.ts
index 61c6f58..70ad51e 100644
--- a/src/effects/SSAOPass.ts
+++ b/src/effects/SSAOPass.ts
@@ -11,6 +11,8 @@ export default defineComponent({
     },
   },
   created() {
+    if (!this.renderer) return
+
     if (!this.renderer.scene) {
       console.error('Missing Scene')
       return
diff --git a/src/effects/TiltShiftPass.ts b/src/effects/TiltShiftPass.ts
index e2fd033..cdebe70 100644
--- a/src/effects/TiltShiftPass.ts
+++ b/src/effects/TiltShiftPass.ts
@@ -26,6 +26,8 @@ export default defineComponent({
     return { uniforms1: {}, uniforms2: {} }
   },
   created() {
+    if (!this.composer) return
+
     this.pass1 = new ShaderPass(TiltShift)
     this.pass2 = new ShaderPass(TiltShift)
 
@@ -57,7 +59,7 @@ export default defineComponent({
     this.composer.addPass(this.pass2)
   },
   unmounted() {
-    if (this.pass2) this.composer.removePass(this.pass2)
+    if (this.composer && this.pass2) this.composer.removePass(this.pass2)
   },
   methods: {
     updateFocusLine() {
diff --git a/src/effects/UnrealBloomPass.ts b/src/effects/UnrealBloomPass.ts
index cf83aa6..5e0d0c3 100644
--- a/src/effects/UnrealBloomPass.ts
+++ b/src/effects/UnrealBloomPass.ts
@@ -13,6 +13,8 @@ export default defineComponent({
   extends: EffectPass,
   props,
   created() {
+    if (!this.renderer) return
+
     const size = new Vector2(this.renderer.size.width, this.renderer.size.height)
     const pass = new UnrealBloomPass(size, this.strength, this.radius, this.threshold)
 
diff --git a/src/geometries/Geometry.ts b/src/geometries/Geometry.ts
index 28a8f68..906aa16 100644
--- a/src/geometries/Geometry.ts
+++ b/src/geometries/Geometry.ts
@@ -1,18 +1,18 @@
 import { BufferGeometry } from 'three'
 import { defineComponent, inject, watch } from 'vue'
-import { MeshInterface } from '../meshes/Mesh'
+import { MeshInjectionKey, MeshInterface } from '../meshes/Mesh'
 
-export interface GeometryInterface {
-  geometry?: BufferGeometry
+export interface GeometrySetupInterface {
   mesh?: MeshInterface
-  watchProps: string[]
+  geometry?: BufferGeometry
+  watchProps?: string[]
 }
 
-function defaultSetup(): GeometryInterface {
-  const mesh = inject('mesh') as MeshInterface
-  const watchProps: string[] = []
-  return { mesh, watchProps }
-}
+// function defaultSetup(): GeometryInterface {
+//   const mesh = inject('mesh') as MeshInterface
+//   const watchProps: string[] = []
+//   return { mesh, watchProps }
+// }
 
 const Geometry = defineComponent({
   props: {
@@ -20,8 +20,12 @@ const Geometry = defineComponent({
     rotateY: Number,
     rotateZ: Number,
   },
-  setup() {
-    return defaultSetup()
+  // inject for sub components
+  inject: {
+    mesh: MeshInjectionKey as symbol,
+  },
+  setup(): GeometrySetupInterface {
+    return {}
   },
   created() {
     if (!this.mesh) {
@@ -29,37 +33,31 @@ const Geometry = defineComponent({
       return
     }
 
-    Object.entries(this.$props).forEach(e => this.watchProps.push(e[0]))
-
     this.createGeometry()
     this.rotateGeometry()
     if (this.geometry) this.mesh.setGeometry(this.geometry)
 
-    this.addWatchers()
+    Object.keys(this.$props).forEach(prop => {
+      // @ts-ignore
+      watch(() => this[prop], this.refreshGeometry)
+    })
   },
   unmounted() {
     this.geometry?.dispose()
   },
   methods: {
     createGeometry() {},
-    addWatchers() {
-      this.watchProps.forEach(prop => {
-        // @ts-ignore
-        watch(() => this[prop], () => {
-          this.refreshGeometry()
-        })
-      })
-    },
     rotateGeometry() {
-      if (this.rotateX) this.geometry?.rotateX(this.rotateX)
-      if (this.rotateY) this.geometry?.rotateY(this.rotateY)
-      if (this.rotateZ) this.geometry?.rotateZ(this.rotateZ)
+      if (!this.geometry) return
+      if (this.rotateX) this.geometry.rotateX(this.rotateX)
+      if (this.rotateY) this.geometry.rotateY(this.rotateY)
+      if (this.rotateZ) this.geometry.rotateZ(this.rotateZ)
     },
     refreshGeometry() {
       const oldGeo = this.geometry
       this.createGeometry()
       this.rotateGeometry()
-      if (this.geometry) this.mesh?.setGeometry(this.geometry)
+      if (this.geometry && this.mesh) this.mesh.setGeometry(this.geometry)
       oldGeo?.dispose()
     },
   },
@@ -74,8 +72,8 @@ export function geometryComponent(name, props, createGeometry) {
     name,
     extends: Geometry,
     props,
-    setup() {
-      return defaultSetup()
+    setup(): GeometrySetupInterface {
+      return {}
     },
     methods: {
       createGeometry() {
diff --git a/src/materials/Material.ts b/src/materials/Material.ts
index fa5e0c7..827c239 100644
--- a/src/materials/Material.ts
+++ b/src/materials/Material.ts
@@ -1,6 +1,6 @@
-import { defineComponent, watch } from 'vue'
+import { defineComponent, InjectionKey, watch } from 'vue'
 import { FrontSide, Material, Texture } from 'three'
-import { MeshInterface } from '../meshes/Mesh'
+import { MeshInjectionKey, MeshInterface } from '../meshes/Mesh'
 
 export interface MaterialSetupInterface {
   mesh?: MeshInterface
@@ -13,8 +13,13 @@ export interface MaterialInterface extends MaterialSetupInterface {
   setTexture(texture: Texture | null, key: string): void
 }
 
+export const MaterialInjectionKey: InjectionKey<MaterialInterface> = Symbol('Material')
+
 export default defineComponent({
-  inject: ['mesh'],
+  // inject for sub components
+  inject: {
+    mesh: MeshInjectionKey as symbol,
+  },
   props: {
     color: { type: [String, Number], default: '#ffffff' },
     depthTest: { type: Boolean, default: true },
@@ -30,7 +35,7 @@ export default defineComponent({
   },
   provide() {
     return {
-      material: this,
+      [MaterialInjectionKey as symbol]: this,
     }
   },
   created() {
diff --git a/src/materials/Texture.ts b/src/materials/Texture.ts
index 961c97d..12ae622 100644
--- a/src/materials/Texture.ts
+++ b/src/materials/Texture.ts
@@ -1,7 +1,7 @@
 import { defineComponent, PropType, watch } from 'vue'
-import { ClampToEdgeWrapping, LinearFilter, LinearMipmapLinearFilter, RGBAFormat, ShaderMaterial, Texture, TextureLoader, UVMapping } from 'three'
+import { ClampToEdgeWrapping, LinearFilter, LinearMipmapLinearFilter, ShaderMaterial, Texture, TextureLoader, UVMapping } from 'three'
 import { bindProp } from '../tools'
-import { MaterialInterface } from './Material'
+import { MaterialInjectionKey, MaterialInterface } from './Material'
 
 export interface TexureInterface {
   material?: MaterialInterface
@@ -9,7 +9,9 @@ export interface TexureInterface {
 }
 
 export default defineComponent({
-  inject: ['material'],
+  inject: {
+    material: MaterialInjectionKey as symbol,
+  },
   props: {
     name: { type: String, default: 'map' },
     uniform: String,
@@ -53,7 +55,7 @@ export default defineComponent({
       if (this.texture && this.material) {
         this.material.setTexture(this.texture, this.name)
         if (this.material.material instanceof ShaderMaterial && this.uniform) {
-          // this.material.uniforms[this.uniform] = { value: this.texture }
+          (this.material as any).uniforms[this.uniform] = { value: this.texture }
         }
       }
     },
diff --git a/src/meshes/Image.ts b/src/meshes/Image.ts
index f1a04eb..3c1d39c 100644
--- a/src/meshes/Image.ts
+++ b/src/meshes/Image.ts
@@ -1,7 +1,6 @@
 import { defineComponent, watch } from 'vue'
 import { DoubleSide, MeshBasicMaterial, PlaneGeometry, Texture, TextureLoader } from 'three'
 import Mesh, { MeshSetupInterface } from './Mesh'
-import { object3DSetup } from '../core/Object3D'
 
 interface ImageSetupInterface extends MeshSetupInterface {
   material?: MeshBasicMaterial
@@ -20,9 +19,11 @@ export default defineComponent({
     keepSize: Boolean,
   },
   setup(): ImageSetupInterface {
-    return object3DSetup()
+    return {}
   },
   created() {
+    if (!this.renderer) return
+
     this.geometry = new PlaneGeometry(1, 1, this.widthSegments, this.heightSegments)
     this.material = new MeshBasicMaterial({ side: DoubleSide, map: this.loadTexture() })
 
@@ -37,7 +38,7 @@ export default defineComponent({
     if (this.keepSize) this.renderer.onResize(this.resize)
   },
   unmounted() {
-    this.renderer.offResize(this.resize)
+    this.renderer?.offResize(this.resize)
   },
   methods: {
     loadTexture() {
@@ -56,7 +57,7 @@ export default defineComponent({
       this.$emit('loaded', texture)
     },
     resize() {
-      if (!this.texture) return
+      if (!this.renderer || !this.texture) return
       const screen = this.renderer.size
       const iW = this.texture.image.width
       const iH = this.texture.image.height
diff --git a/src/meshes/InstancedMesh.ts b/src/meshes/InstancedMesh.ts
index f3e5fba..2daad89 100644
--- a/src/meshes/InstancedMesh.ts
+++ b/src/meshes/InstancedMesh.ts
@@ -10,6 +10,8 @@ export default defineComponent({
   },
   methods: {
     initMesh() {
+      if (!this.renderer) return
+
       if (!this.geometry || !this.material) {
         console.error('Missing geometry and/or material')
         return false
diff --git a/src/meshes/Mesh.ts b/src/meshes/Mesh.ts
index a6b0f28..2e593a0 100644
--- a/src/meshes/Mesh.ts
+++ b/src/meshes/Mesh.ts
@@ -1,6 +1,6 @@
-import { ComponentPropsOptions, defineComponent, watch } from 'vue'
+import { ComponentPropsOptions, defineComponent, InjectionKey, watch } from 'vue'
 import { BufferGeometry, Material, Mesh as TMesh } from 'three'
-import Object3D, { object3DSetup, Object3DSetupInterface } from '../core/Object3D'
+import Object3D, { Object3DSetupInterface } from '../core/Object3D'
 import { bindProp } from '../tools'
 
 export const pointerProps = {
@@ -25,6 +25,8 @@ export interface MeshInterface extends MeshSetupInterface {
   setMaterial(m: Material): void
 }
 
+export const MeshInjectionKey: InjectionKey<MeshInterface> = Symbol('Mesh')
+
 const Mesh = defineComponent({
   name: 'Mesh',
   extends: Object3D,
@@ -34,11 +36,11 @@ const Mesh = defineComponent({
     ...pointerProps,
   },
   setup(): MeshSetupInterface {
-    return object3DSetup()
+    return {}
   },
   provide() {
     return {
-      mesh: this,
+      [MeshInjectionKey as symbol]: this,
     }
   },
   mounted() {
@@ -60,7 +62,7 @@ const Mesh = defineComponent({
         this.onPointerDown ||
         this.onPointerUp ||
         this.onClick) {
-        this.renderer.three.addIntersectObject(mesh)
+        if (this.renderer) this.renderer.three.addIntersectObject(mesh)
       }
 
       this.mesh = mesh
@@ -92,7 +94,7 @@ const Mesh = defineComponent({
   },
   unmounted() {
     if (this.mesh) {
-      this.renderer.three?.removeIntersectObject(this.mesh)
+      if (this.renderer) this.renderer.three.removeIntersectObject(this.mesh)
     }
     // for predefined mesh (geometry/material are not unmounted)
     if (this.geometry) this.geometry.dispose()
@@ -110,7 +112,7 @@ export function meshComponent(name, props, createGeometry) {
     extends: Mesh,
     props,
     setup(): MeshSetupInterface {
-      return object3DSetup()
+      return {}
     },
     created() {
       this.createGeometry()
diff --git a/src/meshes/Sprite.ts b/src/meshes/Sprite.ts
index 05bb088..af1b84c 100644
--- a/src/meshes/Sprite.ts
+++ b/src/meshes/Sprite.ts
@@ -1,6 +1,6 @@
 import { defineComponent } from 'vue'
 import { Sprite, SpriteMaterial, Texture, TextureLoader } from 'three'
-import Object3D, { object3DSetup, Object3DSetupInterface } from '../core/Object3D'
+import Object3D, { Object3DSetupInterface } from '../core/Object3D'
 
 interface SpriteSetupInterface extends Object3DSetupInterface {
   texture?: Texture
@@ -15,7 +15,7 @@ export default defineComponent({
     src: { type: String, required: true },
   },
   setup(): SpriteSetupInterface {
-    return object3DSetup()
+    return {}
   },
   created() {
     this.texture = new TextureLoader().load(this.src, this.onLoaded)
diff --git a/src/meshes/Text.ts b/src/meshes/Text.ts
index 76a10bb..8b3cc77 100644
--- a/src/meshes/Text.ts
+++ b/src/meshes/Text.ts
@@ -1,7 +1,6 @@
 import { defineComponent, watch } from 'vue'
 import { Font, FontLoader, TextGeometry } from 'three'
 import Mesh, { MeshSetupInterface } from './Mesh'
-import { object3DSetup } from '../core/Object3D'
 
 interface TextSetupInterface extends MeshSetupInterface {
   geometry?: TextGeometry
@@ -27,7 +26,7 @@ export default defineComponent({
   extends: Mesh,
   props,
   setup(): TextSetupInterface {
-    return object3DSetup()
+    return {}
   },
   created() {
     if (!this.fontSrc) {