@babylonjs/loaders
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The Babylon.js file loaders library is an extension you can use to load different 3D file types into a Babylon scene.
81 lines • 3.96 kB
JavaScript
import { Color3, Vector3 } from "@babylonjs/core/Maths/math";
import { DirectionalLight } from "@babylonjs/core/Lights/directionalLight";
import { PointLight } from "@babylonjs/core/Lights/pointLight";
import { SpotLight } from "@babylonjs/core/Lights/spotLight";
import { Light } from "@babylonjs/core/Lights/light";
import { GLTFLoader, ArrayItem } from "../glTFLoader";
var NAME = "KHR_lights_punctual";
var LightType;
(function (LightType) {
LightType["DIRECTIONAL"] = "directional";
LightType["POINT"] = "point";
LightType["SPOT"] = "spot";
})(LightType || (LightType = {}));
/**
* [Specification](https://github.com/KhronosGroup/glTF/blob/1048d162a44dbcb05aefc1874bfd423cf60135a6/extensions/2.0/Khronos/KHR_lights_punctual/README.md) (Experimental)
*/
var KHR_lights = /** @class */ (function () {
/** @hidden */
function KHR_lights(loader) {
/** The name of this extension. */
this.name = NAME;
/** Defines whether this extension is enabled. */
this.enabled = true;
this._loader = loader;
}
/** @hidden */
KHR_lights.prototype.dispose = function () {
delete this._loader;
delete this._lights;
};
/** @hidden */
KHR_lights.prototype.onLoading = function () {
var extensions = this._loader.gltf.extensions;
if (extensions && extensions[this.name]) {
var extension = extensions[this.name];
this._lights = extension.lights;
}
};
/** @hidden */
KHR_lights.prototype.loadNodeAsync = function (context, node, assign) {
var _this = this;
return GLTFLoader.LoadExtensionAsync(context, node, this.name, function (extensionContext, extension) {
return _this._loader.loadNodeAsync(context, node, function (babylonMesh) {
var babylonLight;
var light = ArrayItem.Get(extensionContext, _this._lights, extension.light);
var name = light.name || babylonMesh.name;
switch (light.type) {
case LightType.DIRECTIONAL: {
babylonLight = new DirectionalLight(name, Vector3.Backward(), _this._loader.babylonScene);
break;
}
case LightType.POINT: {
babylonLight = new PointLight(name, Vector3.Zero(), _this._loader.babylonScene);
break;
}
case LightType.SPOT: {
var babylonSpotLight = new SpotLight(name, Vector3.Zero(), Vector3.Backward(), 0, 1, _this._loader.babylonScene);
babylonSpotLight.angle = ((light.spot && light.spot.outerConeAngle) || Math.PI / 4) * 2;
babylonSpotLight.innerAngle = ((light.spot && light.spot.innerConeAngle) || 0) * 2;
babylonLight = babylonSpotLight;
break;
}
default: {
throw new Error(extensionContext + ": Invalid light type (" + light.type + ")");
}
}
babylonLight.falloffType = Light.FALLOFF_GLTF;
babylonLight.diffuse = light.color ? Color3.FromArray(light.color) : Color3.White();
babylonLight.intensity = light.intensity == undefined ? 1 : light.intensity;
babylonLight.range = light.range == undefined ? Number.MAX_VALUE : light.range;
babylonLight.parent = babylonMesh;
GLTFLoader.AddPointerMetadata(babylonLight, extensionContext);
assign(babylonMesh);
});
});
};
return KHR_lights;
}());
export { KHR_lights };
GLTFLoader.RegisterExtension(NAME, function (loader) { return new KHR_lights(loader); });
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