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

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

"use strict";
import { BaseSopOperation } from "./_Base";
import { InputCloneMode } from "../../../engine/poly/InputCloneMode";
export class AttribAddMultSopOperation extends BaseSopOperation {
  static type() {
    return "attribAddMult";
  }
  cook(inputCoreGroups, params) {
    const coreGroup = inputCoreGroups[0];
    const attribNames = coreGroup.pointAttribNamesMatchingMask(params.name);
    for (let attribName of attribNames) {
      const geometries = coreGroup.geometries();
      for (let geometry of geometries) {
        this._updateAttrib(attribName, geometry, params);
      }
    }
    return coreGroup;
  }
  _updateAttrib(attribName, geometry, params) {
    const attribute = geometry.getAttribute(attribName);
    if (attribute) {
      const values = attribute.array;
      const preAdd = params.preAdd;
      const mult = params.mult;
      const postAdd = params.postAdd;
      for (let i = 0; i < values.length; i++) {
        const value = values[i];
        values[i] = (value + preAdd) * mult + postAdd;
      }
      attribute.needsUpdate = true;
    }
  }
}
AttribAddMultSopOperation.DEFAULT_PARAMS = {
  name: "",
  preAdd: 0,
  mult: 1,
  postAdd: 0
};
AttribAddMultSopOperation.INPUT_CLONED_STATE = InputCloneMode.FROM_NODE;