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Hi guys, I have little problem. There is a function, that rotates bone // type script function public static rotateBone(bone: BABYLON.Bone, quat: BABYLON.Quaternion): void { var result = bone.getLocalMatrix(); var xx = quat.x * quat.x; var yy = quat.y * quat.y; var zz = quat.z * quat.z; var xy = quat.x * quat.y; var zw = quat.z * quat.w; var zx = quat.z * quat.x; var yw = quat.y * quat.w; var yz = quat.y * quat.z; var xw = quat.x * quat.w; result.m[0] = 1.0 - (2.0 * (yy + zz)); result.m[1] = 2.0 * (xy + zw); result.m[2] = 2.0 * (zx - yw); result.m[3] = 0; result.m[4] = 2.0 * (xy - zw); result.m[5] = 1.0 - (2.0 * (zz + xx)); result.m[6] = 2.0 * (yz + xw); result.m[7] = 0; result.m[8] = 2.0 * (zx + yw); result.m[9] = 2.0 * (yz - xw); result.m[10] = 1.0 - (2.0 * (yy + xx)); result.m[11] = 0; result.m[15] = 1.0; } But this function rotates bone in local space, and I need rotetes bone in world space. What I should change in function?