polygonjs-engine/dist/src/engine/nodes/gl/VectorAngle.js

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

import Quaternion from "./gl/quaternion.glsl";
import {MathFunctionArg2Factory} from "./_Math_Arg2";
import {GlConnectionPointType} from "../utils/io/connections/Gl";
const DefaultValues = {
  start: [0, 0, 1],
  end: [1, 0, 0]
};
export class VectorAngleGlNode extends MathFunctionArg2Factory("vectorAngle", {
  in: ["start", "end"],
  method: "vectorAngle",
  functions: [Quaternion]
}) {
  _expected_input_types() {
    const type = GlConnectionPointType.VEC3;
    return [type, type];
  }
  _expected_output_types() {
    return [GlConnectionPointType.FLOAT];
  }
  param_default_value(name) {
    return DefaultValues[name];
  }
}