lingo3d/lib/utils/findClosestEulerAngle.js

Lingo3D is a React/Vue 3d game development framework that ships with a complete visual editor

import { PI2 } from "../globals";
import { PI } from "../globals";
import Point3d from "../math/Point3d";
export const findClosestEulerAngle = (euler1, euler2) => {
    // Compute the difference between the two Euler angles
    let diff = [euler2.x - euler1.x, euler2.y - euler1.y, euler2.z - euler1.z];
    // Convert the difference to the range of -180 to 180 degrees for each angle
    for (let i = 0; i < 3; i++)
        while (true)
            if (diff[i] > PI)
                diff[i] -= PI2;
            else if (diff[i] < -PI)
                diff[i] += PI2;
            else
                break;
    // Compute the closest equivalent Euler angle
    return new Point3d(euler1.x + diff[0], euler1.y + diff[1], euler1.z + diff[2]);
};
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