wehub-resource-sync
78 lines
2.2 KiB
TypeScript
78 lines
2.2 KiB
TypeScript
import type { Camera3D, Viewer } from '@manycore/aholo-viewer';
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export function syncCameraAspect(camera: Camera3D, viewer: Viewer) {
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if (!('aspect' in camera)) {
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return;
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}
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const { width, height } = viewer.getSize();
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const aspect = width > 0 && height > 0 ? width / height : 1;
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const perspectiveCamera = camera as Camera3D & {
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aspect: number;
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updateProjectionMatrix?: () => void;
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};
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if (Number.isFinite(aspect) && Math.abs(perspectiveCamera.aspect - aspect) > 0.001) {
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perspectiveCamera.aspect = aspect;
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perspectiveCamera.updateProjectionMatrix?.();
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}
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}
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export function countSceneObjects(scene: unknown) {
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let count = 0;
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function visit(node: unknown) {
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if (!node || typeof node !== 'object') {
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return;
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}
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if (node !== scene && isRenderableSceneObject(node)) {
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count += 1;
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}
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if ('children' in node && Array.isArray(node.children)) {
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for (const child of node.children) {
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visit(child);
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}
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}
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}
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visit(scene);
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return count;
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}
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export async function abortable<T>(promise: Promise<T>, signal: AbortSignal, abortMessage: string): Promise<T> {
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throwIfAborted(signal, abortMessage);
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return new Promise<T>((resolve, reject) => {
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const abort = () => {
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reject(createAbortError(abortMessage));
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};
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signal.addEventListener('abort', abort, { once: true });
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promise.then(resolve, reject).finally(() => {
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signal.removeEventListener('abort', abort);
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});
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});
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}
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export function throwIfAborted(signal: AbortSignal, abortMessage: string) {
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if (signal.aborted) {
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throw createAbortError(abortMessage);
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}
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}
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export function createAbortError(abortMessage: string) {
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return new DOMException(abortMessage, 'AbortError');
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}
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function isRenderableSceneObject(node: object) {
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return (
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('isMesh' in node && node.isMesh === true) ||
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('isSplat' in node && node.isSplat === true) ||
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('isSprite' in node && node.isSprite === true) ||
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('isPoints' in node && node.isPoints === true) ||
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('isLine' in node && node.isLine === true)
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);
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}
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