ClipのInspecter表示を変更するサンプル

TestClipInspector.cs

using UnityEditor;

[CustomEditor(typeof(TestClip))]
public class TestClipInspector : Editor {

    private  SerializedProperty  paramTypeProp ;

    private void OnEnable() 
    {
        paramTypeProp = serializedObject.FindProperty("ParamType");
    }

    public override void OnInspectorGUI() 
    {
        EditorGUILayout.PropertyField(paramTypeProp);
        var index = paramTypeProp.enumValueIndex;
        var type = (EParamType)index;
        switch (type)
        {
            case EParamType.Int:
                EditorGUILayout.PropertyField(serializedObject.FindProperty("IntParam"));
                break;
            case EParamType.Float:
                EditorGUILayout.PropertyField(serializedObject.FindProperty("FloatParam"));
                break;
            case EParamType.String:
                EditorGUILayout.PropertyField(serializedObject.FindProperty("StrParam"));
                break;
        }
        serializedObject.ApplyModifiedProperties();
    }
}