@babylonjs/viewer
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The Babylon Viewer aims to simplify a specific but common Babylon.js use case: loading, viewing, and interacting with a 3D model.
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JavaScript
import { bM as PBRMaterial, bJ as unregisterGLTFExtension, bI as registerGLTFExtension } from './index-FzOfPXLV.esm.js';
import { GLTFLoader } from './glTFLoader-VVyk3AwX.esm.js';
import './bone--mL3H5cQ.esm.js';
import './skeleton-B7-ffRm_.esm.js';
import './rawTexture-B2DimmQ5.esm.js';
import './assetContainer-8JZnoDWQ.esm.js';
import './objectModelMapping-CJnQ6at_.esm.js';
const NAME = "KHR_materials_volume";
/**
* [Specification](https://github.com/KhronosGroup/glTF/blob/main/extensions/2.0/Khronos/KHR_materials_volume/README.md)
* @since 5.0.0
*/
// eslint-disable-next-line @typescript-eslint/naming-convention
class KHR_materials_volume {
/**
* @internal
*/
constructor(loader) {
/**
* The name of this extension.
*/
this.name = NAME;
/**
* Defines a number that determines the order the extensions are applied.
*/
this.order = 173;
this._loader = loader;
this.enabled = this._loader.isExtensionUsed(NAME);
if (this.enabled) {
// We need to disable instance usage because the attenuation factor depends on the node scale of each individual mesh
this._loader._disableInstancedMesh++;
}
}
/** @internal */
dispose() {
if (this.enabled) {
this._loader._disableInstancedMesh--;
}
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._loadVolumePropertiesAsync(extensionContext, material, babylonMaterial, extension));
// 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
_loadVolumePropertiesAsync(context, material, babylonMaterial, extension) {
if (!(babylonMaterial instanceof PBRMaterial)) {
throw new Error(`${context}: Material type not supported`);
}
// If transparency isn't enabled already, this extension shouldn't do anything.
// i.e. it requires either the KHR_materials_transmission or KHR_materials_diffuse_transmission extensions.
if ((!babylonMaterial.subSurface.isRefractionEnabled && !babylonMaterial.subSurface.isTranslucencyEnabled) || !extension.thicknessFactor) {
return Promise.resolve();
}
// IOR in this extension only affects interior.
babylonMaterial.subSurface.volumeIndexOfRefraction = babylonMaterial.indexOfRefraction;
const attenuationDistance = extension.attenuationDistance !== undefined ? extension.attenuationDistance : Number.MAX_VALUE;
babylonMaterial.subSurface.tintColorAtDistance = attenuationDistance;
if (extension.attenuationColor !== undefined && extension.attenuationColor.length == 3) {
babylonMaterial.subSurface.tintColor.copyFromFloats(extension.attenuationColor[0], extension.attenuationColor[1], extension.attenuationColor[2]);
}
babylonMaterial.subSurface.minimumThickness = 0.0;
babylonMaterial.subSurface.maximumThickness = extension.thicknessFactor;
babylonMaterial.subSurface.useThicknessAsDepth = true;
if (extension.thicknessTexture) {
extension.thicknessTexture.nonColorData = true;
// eslint-disable-next-line github/no-then
return this._loader.loadTextureInfoAsync(`${context}/thicknessTexture`, extension.thicknessTexture).then((texture) => {
texture.name = `${babylonMaterial.name} (Thickness)`;
babylonMaterial.subSurface.thicknessTexture = texture;
babylonMaterial.subSurface.useGltfStyleTextures = true;
});
}
else {
return Promise.resolve();
}
}
}
unregisterGLTFExtension(NAME);
registerGLTFExtension(NAME, true, (loader) => new KHR_materials_volume(loader));
export { KHR_materials_volume };
//# sourceMappingURL=KHR_materials_volume-BAeUOOgK.esm.js.map