@babylonjs/loaders
Version:
For usage documentation please visit https://doc.babylonjs.com/features/featuresDeepDive/importers/loadingFileTypes/.
73 lines • 3.25 kB
JavaScript
import { GLTFLoader } from "../glTFLoader.js";
import { registerGLTFExtension, unregisterGLTFExtension } from "../glTFLoaderExtensionRegistry.js";
import { ensureTransmissionHelper } from "./transmissionHelper.js";
const NAME = "KHR_materials_transmission";
/**
* [Specification](https://github.com/KhronosGroup/glTF/blob/main/extensions/2.0/Khronos/KHR_materials_transmission/README.md)
*/
// eslint-disable-next-line @typescript-eslint/naming-convention
export class KHR_materials_transmission {
/**
* @internal
*/
constructor(loader) {
/**
* The name of this extension.
*/
this.name = NAME;
/**
* Defines a number that determines the order the extensions are applied.
*/
this.order = 175;
this._loader = loader;
this.enabled = this._loader.isExtensionUsed(NAME);
if (this.enabled) {
loader.parent.transparencyAsCoverage = true;
}
}
/** @internal */
dispose() {
this._loader = null;
}
/**
* @internal
*/
// eslint-disable-next-line no-restricted-syntax
loadMaterialPropertiesAsync(context, material, babylonMaterial) {
return GLTFLoader.LoadExtensionAsync(context, material, this.name, async (extensionContext, extension) => {
const promises = new Array();
promises.push(this._loader.loadMaterialPropertiesAsync(context, material, babylonMaterial));
promises.push(this._loadTransparentPropertiesAsync(extensionContext, material, babylonMaterial, extension));
// eslint-disable-next-line github/no-then
return await Promise.all(promises).then(() => { });
});
}
// eslint-disable-next-line no-restricted-syntax, @typescript-eslint/promise-function-async
_loadTransparentPropertiesAsync(context, material, babylonMaterial, extension) {
const adapter = this._loader._getOrCreateMaterialAdapter(babylonMaterial);
const transmissionWeight = extension.transmissionFactor !== undefined ? extension.transmissionFactor : 0.0;
if (transmissionWeight === 0 || !adapter) {
return Promise.resolve();
}
// Set transmission properties immediately via adapter
adapter.configureTransmission();
adapter.transmissionWeight = transmissionWeight;
if (transmissionWeight > 0) {
ensureTransmissionHelper(this._loader, babylonMaterial);
}
// Load texture if present
let texturePromise = Promise.resolve(null);
if (extension.transmissionTexture) {
extension.transmissionTexture.nonColorData = true;
texturePromise = this._loader.loadTextureInfoAsync(`${context}/transmissionTexture`, extension.transmissionTexture, (texture) => {
texture.name = `${babylonMaterial.name} (Transmission)`;
adapter.transmissionWeightTexture = texture;
});
}
// eslint-disable-next-line github/no-then
return texturePromise.then(() => { });
}
}
unregisterGLTFExtension(NAME);
registerGLTFExtension(NAME, true, (loader) => new KHR_materials_transmission(loader));
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