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Question by Isterisko · Jan 12, 2017 at 08:29 PM · namespace

MathF not found in UnityEngine?

Hi, I have this chunk of code:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class MouseLook : MonoBehaviour {
     public enum RotationAxes{
         MouseXAndY = 0,
         MouseX = 1,
         MouseY = 2
     }
     public RotationAxes axes = RotationAxes.MouseXAndY;
 
     public float sensitivityHor = 9f;
     public float sensitivityVert = 9f;
 
     public float minimumVert = -45f;
     public float maximumVert = 45f;
 
     private float _rotationX = 0;
 
     // Use this for initialization
     void Start () {
 
     }
 
     // Update is called once per frame
     void Update () {
         if (axes == RotationAxes.MouseX) {
             transform.Rotate(0, Input.GetAxis("Mouse X") * sensitivityHor, 0);
         } else if (axes == RotationAxes.MouseY) {
             _rotationX -= Input.GetAxis("Mouse Y") * sensitivityVert;
             _rotationX = MathF.Clamp (_rotationX, minimumVert, maximumVert);
 
             float rotationY = transform.localEulerAngles.y;
 
             transform.localEulerAngles = new Vector3 (_rotationX, rotationY, 0);
         } else {
             //both horizontal and vertical rotation
         }
     }
 }

Nevertheless i get this compilation error in console:

 Assets/Scripts/MouseLook.cs(32,17): error CS0103: The name `MathF' does not exist in the current context

Moreover, if I add Unity.Engine. to Mathf.Clamp I get:

 Assets/Scripts/MouseLook.cs(32,29): error CS0234: The type or namespace name `MathF' does not exist in the namespace `UnityEngine'. Are you missing an assembly reference?

Nevertheless, according to MathF Unity 5.5 (my version) online reference MathF is contained in Unity Engine: https://docs.unity3d.com/ScriptReference/Mathf.html

Is there something wrong with my UnityEngine library? Someone else had this issue? In past versions I had no problem about this.

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Answer by Pengocat · Jan 12, 2017 at 08:31 PM

It's Mathf not MathF

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avatar image whynot660 · Jan 12, 2017 at 08:34 PM 0
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:D this happens too much to me too, like void update() ins$$anonymous$$d of Update()

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Answer by RGV · Mar 18, 2021 at 07:23 PM

MathF is totally a thing in C#. Mathf is the Unity math library. I was wondering why MathF is somehow unavailable at Unity, even last updates with .NET 4.0... https://docs.microsoft.com/en-us/dotnet/api/system.mathf?view=net-5.0

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