Visualize normals of Skinned Mesh Renderer in Unity3D

README.md

Visualize the normals of a SkinnedMeshRenderer

It's meant to be simple and easy to use, and therefore it has been made as a custom editor of SkinnedMeshRenderer. It needs no preparations.

How to use

Drop the file in an Editor folder.

Refs

this script based on https://gist.github.com/mandarinx/ed733369fbb2eea6c7fa9e3da65a0e17

SkinNormalsVisualizer.cs

using UnityEditor;
using UnityEngine;

[CustomEditor(typeof(SkinnedMeshRenderer))]
public class SkinNormalsVisualizer : Editor
{
    private Mesh mesh;

    void OnEnable()
    {
        var smr = target as SkinnedMeshRenderer;
        if (smr != null)
        {
            mesh = smr.sharedMesh;
        }
    }

    void OnSceneGUI()
    {
        if (mesh == null)
        {
            return;
        }

        var vertices = mesh.vertices;
        var normals = mesh.normals;

        Handles.zTest = UnityEngine.Rendering.CompareFunction.Less;

        Handles.matrix = (target as SkinnedMeshRenderer).transform.localToWorldMatrix;
        Handles.color = Color.yellow;

        for (int i = 0; i < mesh.vertexCount; i++)
        {
            Handles.DrawLine(
                vertices[i],
                vertices[i] + normals[i] * 0.02f);
        }
    }
}