threepipe/examples/virtual-cameras-plugin/script.js

A 3D viewer framework built on top of three.js in TypeScript with a focus on quality rendering, modularity and extensibility.

import { _testFinish, HemisphereLight, LoadingScreenPlugin, PerspectiveCamera2, ProgressivePlugin, RenderTargetPreviewPlugin, SSAAPlugin, ThreeViewer, Vector3, VirtualCamerasPlugin, } from 'threepipe';
import { TweakpaneUiPlugin } from '@threepipe/plugin-tweakpane';
async function init() {
    const viewer = new ThreeViewer({
        canvas: document.getElementById('mcanvas'),
        debug: true,
        plugins: [new ProgressivePlugin(16), SSAAPlugin, LoadingScreenPlugin],
    });
    const virtualCameras = viewer.addPluginSync(VirtualCamerasPlugin);
    viewer.scene.addObject(new HemisphereLight(0xffffff, 0x444444, 10));
    await viewer.load('https://threejs.org/examples/models/fbx/Samba Dancing.fbx', {
        autoCenter: true,
        autoScale: true,
    });
    viewer.scene.mainCamera.position.set(5, 5, 5);
    viewer.scene.mainCamera.target.set(0, 0.25, 0);
    viewer.scene.mainCamera.setDirty();
    const views = [
        [new Vector3(5, 0, 0), 'right'],
        [new Vector3(0, 5, 0), 'top'],
        [new Vector3(0, 0, 5), 'front'],
    ];
    const rt = viewer.addPluginSync(RenderTargetPreviewPlugin);
    const ui = viewer.addPluginSync(TweakpaneUiPlugin, true);
    ui.appendChild(viewer.scene.mainCamera.uiConfig);
    for (const [view, name] of views) {
        const camera = new PerspectiveCamera2('', viewer.canvas, false, 45, 1);
        camera.name = name;
        camera.position.copy(view);
        camera.target.set(0, 0.25, 0);
        camera.userData.autoLookAtTarget = true;
        camera.setDirty();
        camera.addEventListener('update', () => {
            viewer.setDirty(); // since the camera is not added to the scene it wont update automatically when setDirty is called(like from the UI)
        });
        viewer.scene.mainCamera.addEventListener('update', () => {
            camera.target.copy(viewer.scene.mainCamera.target); // sync the lookAt target of all the cameras
            camera.setDirty();
        });
        const vCam = virtualCameras.addCamera(camera);
        rt.addTarget(() => vCam.target, name, false, false, true);
        ui.appendChild(camera.uiConfig);
    }
}
init().finally(_testFinish);