Handles.ScaleSlider

参数

返回

float 通过用户与手柄的交互修改的新值。如果用户没有移动手柄，则将返回您传递给相应函数的值。

描述

创建一个定向缩放滑动条。

This method will draw a 3D-draggable handle on the screen that looks like one axis on Unity's built-in scale tool. The handle will stretch and will scale a single float up and down.


Scale slider handle in the Scene View.

将以下脚本作为 ScaleSliderExample.cs 添加到 Assets 文件夹，然后将 ScaleSliderExample 组件添加到场景中的对象。

using UnityEngine;

[ExecuteInEditMode]
public class ScaleSliderExample : MonoBehaviour
{
    public float scale { get { return m_Scale; } set { m_Scale = value; } }
    [SerializeField]
    private float m_Scale = 1f;

    public virtual void Update()
    {
        transform.localScale = new Vector3(scale, 1f, 1f);
    }
}

将以下脚本作为 ScaleSliderExampleEditor.cs 添加到 Assets/Editor，然后选择包含 ScaleSliderExample 组件的对象。

using UnityEditor;
using UnityEngine;

[CustomEditor(typeof(ScaleSliderExample)), CanEditMultipleObjects]
public class ScaleSliderExampleEditor : Editor
{
    public void OnSceneGUI()
    {
        ScaleSliderExample example = (ScaleSliderExample)target;

        float size = HandleUtility.GetHandleSize(example.transform.position) * 1f;
        float snap = 0.5f;

        EditorGUI.BeginChangeCheck();
        float scale = Handles.ScaleSlider(example.scale, example.transform.position, example.transform.right, example.transform.rotation, size, snap);
        if (EditorGUI.EndChangeCheck())
        {
            Undo.RecordObject(target, "Change Scale Value");
            example.scale = scale;
            example.Update();
        }
    }
}