playcanvas/build/playcanvas/src/framework/handlers/render.js

Open-source WebGL/WebGPU 3D engine for the web

import { Render } from "../../scene/render.js";
import { ResourceHandler } from "./handler.js";
function onContainerAssetLoaded(containerAsset) {
	const renderAsset = this;
	if (!renderAsset.resource) return;
	const containerResource = containerAsset.resource;
	const render = containerResource.renders && containerResource.renders[renderAsset.data.renderIndex];
	if (render) {
		renderAsset.resource.meshes = render.resource.meshes;
	}
}
function onContainerAssetAdded(containerAsset) {
	const renderAsset = this;
	renderAsset.registry.off(`load:${containerAsset.id}`, onContainerAssetLoaded, renderAsset);
	renderAsset.registry.on(`load:${containerAsset.id}`, onContainerAssetLoaded, renderAsset);
	renderAsset.registry.off(`remove:${containerAsset.id}`, onContainerAssetRemoved, renderAsset);
	renderAsset.registry.once(`remove:${containerAsset.id}`, onContainerAssetRemoved, renderAsset);
	if (!containerAsset.resource) {
		renderAsset.registry.load(containerAsset);
	} else {
		onContainerAssetLoaded.call(renderAsset, containerAsset);
	}
}
function onContainerAssetRemoved(containerAsset) {
	const renderAsset = this;
	renderAsset.registry.off(`load:${containerAsset.id}`, onContainerAssetLoaded, renderAsset);
	if (renderAsset.resource) {
		renderAsset.resource.destroy();
	}
}
class RenderHandler extends ResourceHandler {
	constructor(app) {
		super(app, "render");
		this._registry = app.assets;
	}
	open(url, data) {
		return new Render();
	}
	patch(asset, registry) {
		if (!asset.data.containerAsset) {
			return;
		}
		const containerAsset = registry.get(asset.data.containerAsset);
		if (!containerAsset) {
			registry.once(`add:${asset.data.containerAsset}`, onContainerAssetAdded, asset);
			return;
		}
		onContainerAssetAdded.call(asset, containerAsset);
	}
}
export {
	RenderHandler
};