@babylonjs/loaders
Version:
For usage documentation please visit https://doc.babylonjs.com/features/featuresDeepDive/importers/loadingFileTypes/.
59 lines • 2.38 kB
JavaScript
import { Texture } from "@babylonjs/core/Materials/Textures/texture.js";
import { GLTFLoader } from "../glTFLoader.js";
import { registerGLTFExtension, unregisterGLTFExtension } from "../glTFLoaderExtensionRegistry.js";
const NAME = "KHR_texture_transform";
/**
* [Specification](https://github.com/KhronosGroup/glTF/blob/main/extensions/2.0/Khronos/KHR_texture_transform/README.md)
*/
// eslint-disable-next-line @typescript-eslint/naming-convention
export class KHR_texture_transform {
/**
* @internal
*/
constructor(loader) {
/**
* The name of this extension.
*/
this.name = NAME;
this._loader = loader;
this.enabled = this._loader.isExtensionUsed(NAME);
}
/** @internal */
dispose() {
this._loader = null;
}
/**
* @internal
*/
// eslint-disable-next-line no-restricted-syntax
loadTextureInfoAsync(context, textureInfo, assign) {
return GLTFLoader.LoadExtensionAsync(context, textureInfo, this.name, async (extensionContext, extension) => {
return await this._loader.loadTextureInfoAsync(context, textureInfo, (babylonTexture) => {
if (!(babylonTexture instanceof Texture)) {
throw new Error(`${extensionContext}: Texture type not supported`);
}
if (extension.offset) {
babylonTexture.uOffset = extension.offset[0];
babylonTexture.vOffset = extension.offset[1];
}
// Always rotate around the origin.
babylonTexture.uRotationCenter = 0;
babylonTexture.vRotationCenter = 0;
if (extension.rotation) {
babylonTexture.wAng = -extension.rotation;
}
if (extension.scale) {
babylonTexture.uScale = extension.scale[0];
babylonTexture.vScale = extension.scale[1];
}
if (extension.texCoord != undefined) {
babylonTexture.coordinatesIndex = extension.texCoord;
}
assign(babylonTexture);
});
});
}
}
unregisterGLTFExtension(NAME);
registerGLTFExtension(NAME, true, (loader) => new KHR_texture_transform(loader));
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