import { _testFinish, FragmentClippingExtensionPlugin, IObject3D, LoadingScreenPlugin, PhysicalMaterial, ThreeViewer, Vector4, } from 'threepipe' import {TweakpaneUiPlugin} from '@threepipe/plugin-tweakpane' async function init() { const viewer = new ThreeViewer({ canvas: document.getElementById('mcanvas') as HTMLCanvasElement, msaa: true, plugins: [LoadingScreenPlugin], }) const fragmentClipping = viewer.addPluginSync(FragmentClippingExtensionPlugin) const ui = viewer.addPluginSync(new TweakpaneUiPlugin(true)) await viewer.setEnvironmentMap('https://threejs.org/examples/textures/equirectangular/venice_sunset_1k.hdr', { setBackground: true, }) const result = await viewer.load<IObject3D>('https://threejs.org/examples/models/gltf/DamagedHelmet/glTF/DamagedHelmet.gltf', { autoCenter: true, autoScale: true, }) const model = result?.getObjectByName('node_damagedHelmet_-6514') const materials = (model?.materials || []) as PhysicalMaterial[] for (const material of materials) { FragmentClippingExtensionPlugin.AddFragmentClipping(material, { clipPosition: new Vector4(0.5, 0.5, 0, 0), clipParams: new Vector4(0.1, 0.05, 0, 1), }) // set properties like this or from the UI // material.userData._fragmentClipping!.clipPosition.set(0, 0, 0, 0) // material.setDirty() // Add extra fragment clipping extension ui mapped to this material. // This is also added inside the material ui by default by the material extension automatically. const config = material.uiConfig if (!config) continue ui.appendChild(fragmentClipping.materialExtension.getUiConfig?.(material), {expanded: true}) ui.appendChild(config) } } init().finally(_testFinish)