Merge pull request #1796 from xeokit/XEOK-205-math.mat4ToEuler-to-degrees

XEOK-205 Fix math.mat4ToEuler to return angles in degrees, not radians

Author: xeolabs

src/viewer/scene/math/math.js

@@ -1965,7 +1965,7 @@ const math = {
      * @param {Number[]} mat The 4x4 matrix.
      * @param {String} order Desired Euler angle order: "XYZ", "YXZ", "ZXY" etc.
      * @param {Number[]} [dest] Destination Euler angles, created by default.
-     * @returns {Number[]} The Euler angles.
+     * @returns {Number[]} The Euler angles (in degrees).
      */
     mat4ToEuler(mat, order, dest = math.vec4()) {
         const clamp = math.clamp;
@@ -2057,6 +2057,10 @@ const math = {
             }
         }
 
+        dest[0] *= math.RADTODEG;
+        dest[1] *= math.RADTODEG;
+        dest[2] *= math.RADTODEG;
+
         return dest;
     },
 
@@ -2866,7 +2870,7 @@ const math = {
     /**
      * Initializes a quaternion from Euler angles.
      *
-     * @param {Number[]} euler The Euler angles.
+     * @param {Number[]} euler The Euler angles (in degrees).
      * @param {String} order Euler angle order: "XYZ", "YXZ", "ZXY" etc.
      * @param {Number[]} [dest] Destination quaternion, created by default.
      * @returns {Number[]} The quaternion.