@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 { FlowGraphExecutionBlockWithOutSignal } from "../../../flowGraphExecutionBlockWithOutSignal.js";
import { RichTypeAny, RichTypeFlowGraphInteger, RichTypeNumber } from "../../../flowGraphRichTypes.js";
import { RegisterClass } from "../../../../Misc/typeStore.js";
import { getNumericValue } from "../../../utils.js";
import { FlowGraphInteger } from "../../../CustomTypes/flowGraphInteger.js";
/**
* Block that executes an action in a loop.
*/
export class FlowGraphForLoopBlock extends FlowGraphExecutionBlockWithOutSignal {
constructor(config) {
super(config);
this.startIndex = this.registerDataInput("startIndex", RichTypeAny, 0);
this.endIndex = this.registerDataInput("endIndex", RichTypeAny);
this.step = this.registerDataInput("step", RichTypeNumber, 1);
this.index = this.registerDataOutput("index", RichTypeFlowGraphInteger, new FlowGraphInteger(getNumericValue(config?.initialIndex ?? 0)));
this.executionFlow = this._registerSignalOutput("executionFlow");
this.completed = this._registerSignalOutput("completed");
this._unregisterSignalOutput("out");
}
/**
* @internal
*/
_execute(context) {
const index = getNumericValue(this.startIndex.getValue(context));
const step = this.step.getValue(context);
let endIndex = getNumericValue(this.endIndex.getValue(context));
for (let i = index; i < endIndex; i += step) {
this.index.setValue(new FlowGraphInteger(i), context);
this.executionFlow._activateSignal(context);
endIndex = getNumericValue(this.endIndex.getValue(context));
if (i > FlowGraphForLoopBlock.MaxLoopIterations) {
break;
}
}
this.completed._activateSignal(context);
}
/**
* @returns class name of the block.
*/
getClassName() {
return "FlowGraphForLoopBlock" /* FlowGraphBlockNames.ForLoop */;
}
}
/**
* The maximum number of iterations allowed for the loop.
* If the loop exceeds this number, it will stop. This number is configurable to avoid infinite loops.
*/
FlowGraphForLoopBlock.MaxLoopIterations = 1000;
RegisterClass("FlowGraphForLoopBlock" /* FlowGraphBlockNames.ForLoop */, FlowGraphForLoopBlock);
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