@babylonjs/loaders
Version:
For usage documentation please visit https://doc.babylonjs.com/features/featuresDeepDive/importers/loadingFileTypes/.
69 lines • 3.26 kB
JavaScript
import { GLTFLoader } from "../glTFLoader.js";
import { registerGLTFExtension, unregisterGLTFExtension } from "../glTFLoaderExtensionRegistry.js";
const NAME = "KHR_materials_iridescence";
/**
* [Specification](https://github.com/KhronosGroup/glTF/blob/main/extensions/2.0/Khronos/KHR_materials_iridescence/README.md)
*/
// eslint-disable-next-line @typescript-eslint/naming-convention
export class KHR_materials_iridescence {
/**
* @internal
*/
constructor(loader) {
/**
* The name of this extension.
*/
this.name = NAME;
/**
* Defines a number that determines the order the extensions are applied.
*/
this.order = 195;
this._loader = loader;
this.enabled = this._loader.isExtensionUsed(NAME);
}
/** @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._loadIridescencePropertiesAsync(extensionContext, extension, babylonMaterial));
// eslint-disable-next-line github/no-then
return await Promise.all(promises).then(() => { });
});
}
// eslint-disable-next-line @typescript-eslint/promise-function-async, no-restricted-syntax
_loadIridescencePropertiesAsync(context, properties, babylonMaterial) {
const adapter = this._loader._getOrCreateMaterialAdapter(babylonMaterial);
const promises = new Array();
// Set non-texture properties immediately
adapter.thinFilmWeight = properties.iridescenceFactor ?? 0;
adapter.thinFilmIor = properties.iridescenceIor ?? properties.iridescenceIOR ?? 1.3;
adapter.thinFilmThicknessMinimum = properties.iridescenceThicknessMinimum ?? 100;
adapter.thinFilmThicknessMaximum = properties.iridescenceThicknessMaximum ?? 400;
// Load textures
if (properties.iridescenceTexture) {
promises.push(this._loader.loadTextureInfoAsync(`${context}/iridescenceTexture`, properties.iridescenceTexture, (texture) => {
texture.name = `${babylonMaterial.name} (Iridescence)`;
adapter.thinFilmWeightTexture = texture;
}));
}
if (properties.iridescenceThicknessTexture) {
promises.push(this._loader.loadTextureInfoAsync(`${context}/iridescenceThicknessTexture`, properties.iridescenceThicknessTexture, (texture) => {
texture.name = `${babylonMaterial.name} (Iridescence Thickness)`;
adapter.thinFilmThicknessTexture = texture;
}));
}
// eslint-disable-next-line github/no-then
return Promise.all(promises).then(() => { });
}
}
unregisterGLTFExtension(NAME);
registerGLTFExtension(NAME, true, (loader) => new KHR_materials_iridescence(loader));
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