@polygonjs/polygonjs/dist/src/engine/operations/sop/BboxScatter.js

node-based WebGL 3D engine https://polygonjs.com

"use strict";
import { BaseSopOperation } from "./_Base";
import { InputCloneMode } from "../../../engine/poly/InputCloneMode";
import { BufferAttribute, BufferGeometry, Box3 } from "three";
import { ObjectType } from "../../../core/geometry/Constant";
const tmpBox = new Box3();
export class BboxScatterSopOperation extends BaseSopOperation {
  static type() {
    return "bboxScatter";
  }
  cook(inputCoreGroups, params) {
    const inputCoreGroup = inputCoreGroups[0];
    const stepSize = params.stepSize;
    inputCoreGroup.boundingBox(tmpBox);
    const min = tmpBox.min;
    const max = tmpBox.max;
    const positions = [];
    for (let x = min.x; x <= max.x; x += stepSize) {
      for (let y = min.y; y <= max.y; y += stepSize) {
        for (let z = min.z; z <= max.z; z += stepSize) {
          positions.push(x);
          positions.push(y);
          positions.push(z);
        }
      }
    }
    const geometry = new BufferGeometry();
    geometry.setAttribute("position", new BufferAttribute(new Float32Array(positions), 3));
    const object = BaseSopOperation.createObject(geometry, ObjectType.POINTS);
    if (this._node) {
      object.name = this._node.name();
    }
    return this.createCoreGroupFromObjects([object]);
  }
}
BboxScatterSopOperation.DEFAULT_PARAMS = {
  stepSize: 1
};
BboxScatterSopOperation.INPUT_CLONED_STATE = InputCloneMode.NEVER;