@babylonjs/core
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Getting started? Play directly with the Babylon.js API using our [playground](https://playground.babylonjs.com/). It also contains a lot of samples to learn how to use it.
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JavaScript
import { Observable } from "../../../Misc/observable.js";
import { RegisterClass } from "../../../Misc/typeStore.js";
import { NodeGeometryBlockConnectionPointTypes } from "../Enums/nodeGeometryConnectionPointTypes.js";
import { NodeGeometryBlock } from "../nodeGeometryBlock.js";
/**
* Block used to trigger an observable when traversed
* It can also be used to execute a function when traversed
*/
export class GeometryInterceptorBlock extends NodeGeometryBlock {
/**
* Creates a new GeometryInterceptorBlock
* @param name defines the block name
*/
constructor(name) {
super(name);
/**
* Observable triggered when the block is traversed
*/
this.onInterceptionObservable = new Observable(undefined, true);
this.registerInput("input", NodeGeometryBlockConnectionPointTypes.AutoDetect);
this.registerOutput("output", NodeGeometryBlockConnectionPointTypes.BasedOnInput);
this._outputs[0]._typeConnectionSource = this._inputs[0];
}
/**
* Gets the time spent to build this block (in ms)
*/
get buildExecutionTime() {
return -1;
}
/**
* Gets the current class name
* @returns the class name
*/
getClassName() {
return "GeometryInterceptorBlock";
}
/**
* Gets the input component
*/
get input() {
return this._inputs[0];
}
/**
* Gets the output component
*/
get output() {
return this._outputs[0];
}
_buildBlock(state) {
super._buildBlock(state);
const output = this._outputs[0];
const input = this._inputs[0];
output._storedFunction = (state) => {
let value = input.getConnectedValue(state);
if (this.customFunction) {
value = this.customFunction(value, state);
}
this.onInterceptionObservable.notifyObservers(value);
return value;
};
}
}
RegisterClass("BABYLON.GeometryInterceptorBlock", GeometryInterceptorBlock);
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