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-/// <reference path="../../../../../dist/preview release/gltf2Interface/babylon.glTF2Interface.d.ts"/>
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-
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-module BABYLON.GLTF2.Exporter.Extensions {
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- const NAME = "KHR_texture_transform";
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-
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- /**
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- * Interface for handling KHR texture transform
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- * @hidden
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- */
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- interface IKHRTextureTransform {
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- offset?: number[];
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- rotation?: number;
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- scale?: number[];
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- texCoord?: number;
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- }
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-
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- /**
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- * @hidden
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- */
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- export class KHR_texture_transform implements IGLTFExporterExtension {
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- /** Name of this extension */
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- public readonly name = NAME;
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-
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- /** Defines whether this extension is enabled */
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- public enabled = true;
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-
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- /** Defines whether this extension is required */
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- public required = false;
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-
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- /** Reference to the glTF exporter */
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- private _exporter: _Exporter;
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-
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- constructor(exporter: _Exporter) {
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- this._exporter = exporter;
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- }
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-
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- public dispose() {
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- delete this._exporter;
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- }
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-
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- public preExportTextureAsync(context: string, babylonTexture: Texture, mimeType: ImageMimeType): Nullable<Promise<Texture>> {
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- return new Promise((resolve, reject) => {
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- const texture_transform_extension: IKHRTextureTransform = {};
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-
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- if (babylonTexture.uOffset !== 0 || babylonTexture.vOffset !== 0) {
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- texture_transform_extension.offset = [babylonTexture.uOffset, babylonTexture.vOffset];
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- }
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-
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- if (babylonTexture.uScale !== 1 || babylonTexture.vScale !== 1) {
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- texture_transform_extension.scale = [babylonTexture.uScale, babylonTexture.vScale];
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- }
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-
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- if (babylonTexture.wAng !== 0) {
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- texture_transform_extension.rotation = babylonTexture.wAng;
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- }
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-
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- if (!Object.keys(texture_transform_extension).length) {
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- resolve(babylonTexture);
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- }
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-
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- const scale = texture_transform_extension.scale ? new Vector2(texture_transform_extension.scale[0], texture_transform_extension.scale[1]) : Vector2.One();
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- const rotation = texture_transform_extension.rotation != null ? texture_transform_extension.rotation : 0;
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- const offset = texture_transform_extension.offset ? new Vector2(texture_transform_extension.offset[0], texture_transform_extension.offset[1]) : Vector2.Zero();
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- const scene = babylonTexture.getScene();
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- if (!scene) {
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- reject(`${context}: "scene" is not defined for Babylon texture ${babylonTexture.name}!`);
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- }
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- else {
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- this.textureTransformTextureAsync(babylonTexture, offset, rotation, scale, scene).then(texture => {
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- resolve(texture as Texture);
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- });
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- }
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- });
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- }
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-
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- /**
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- * Transform the babylon texture by the offset, rotation and scale parameters using a procedural texture
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- * @param babylonTexture
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- * @param offset
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- * @param rotation
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- * @param scale
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- * @param scene
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- */
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- public textureTransformTextureAsync(babylonTexture: Texture, offset: Vector2, rotation: number, scale: Vector2, scene: Scene): Promise<BaseTexture> {
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- return new Promise((resolve, reject) => {
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- const proceduralTexture = new ProceduralTexture(`${babylonTexture.name}`, babylonTexture.getSize(), "textureTransform", scene);
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- if (!proceduralTexture) {
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- Tools.Log(`Cannot create procedural texture for ${babylonTexture.name}!`);
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- resolve(babylonTexture);
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- }
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-
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- proceduralTexture.setTexture("textureSampler", babylonTexture);
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- proceduralTexture.setMatrix("textureTransformMat", babylonTexture.getTextureMatrix());
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-
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- if (!proceduralTexture.isReady()) {
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- proceduralTexture._effect.onCompiled = () => {
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- proceduralTexture.render();
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- resolve(proceduralTexture);
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- }
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- }
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- else {
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- proceduralTexture.render();
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- resolve(proceduralTexture);
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- }
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- });
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- }
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- }
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-
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- _Exporter.RegisterExtension(NAME, exporter => new KHR_texture_transform(exporter));
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-}
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