Unity Animation采样和自定义属性

素颜马尾好姑娘i 2022-07-13 03:15 346阅读 0赞

1、了解Animation的采样函数Sample怎么使用。

2、了解自定义属性面板

动画的采样可用于自定义编辑器等工具，也可以自己实现一套动画系统

首先看一下自定义属性面板，网上都有相关代码和教程，在这里粘贴一处网上的代码，如果冒犯，望海涵~

using UnityEngine;
    using System.Collections;
    
    public class MyRangeAttribute : PropertyAttribute
    {
        public float min;
        public float max;
        public string label;
    
        public MyRangeAttribute( float min, float max, string label = "")
        {
            this.min = min;
            this.max = max;
            this.label = label;
        }
    }

using UnityEngine;
    using UnityEditor;
    using System.Collections;
    //该代码放在Editor目录下
    [CustomPropertyDrawer(typeof(MyRangeAttribute))]
    public class MyRangeAttributeDrawer : PropertyDrawer 
    {
        public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
        {
            MyRangeAttribute range = this.attribute as MyRangeAttribute;
            if( property.propertyType == SerializedPropertyType.Float )
            {
                if (range.label != string.Empty)
                {
                    label.text = range.label;
                }
                EditorGUI.Slider(position, property, range.min, range.max, label);
            }
            else if( property.propertyType == SerializedPropertyType.Integer )
            {
                if( range.label != string.Empty )
                {
                    label.text = range.label;
                }
                EditorGUI.IntSlider(position, property, (int)range.min, (int)range.max, label);
            }
        }
    }

动画采集及自定义属性使用

using UnityEngine;
    using System.Collections;
    [ExecuteInEditMode]
    public class AnimationTest : MonoBehaviour 
    {
        public Animation anim;
        [MyRangeAttribute(0f,1f,"动画采样")]
        public float curValue = 0f;
    
        float deltaTime = 0f;
        float lastFrameTime = 0f;
        float progressTime = 0f;
        string clipName = "run";
    	void Start () 
        {
            anim.enabled = false;
            AnimationState state = anim[clipName];
            state.enabled = true;
            state.weight = 1;
            state.normalizedTime = 0;
            anim.Sample();
            state.enabled = false;
    	}
    	
    	// Update is called once per frame
    	void Update () 
        {
            deltaTime = Time.realtimeSinceStartup;
            progressTime += deltaTime - lastFrameTime;
            Example();
            lastFrameTime = deltaTime;
    	}
        void Example()
        {
            AnimationState animState = anim[clipName];
            animState.enabled = true;
            animState.speed = 1f;
            animState.weight = 1;
            if (curValue > 1f)
            {
                curValue = 0f;
            }
            animState.normalizedTime = curValue;
            anim.Sample();
            animState.enabled = false;
        }
    }

这样就可以自由操作动画的播放了  
![Center][]

![Center 1][]

[Center]: /images/20220713/c150576398404bcfb1794220f6c1a300.png
[Center 1]: /images/20220713/72b123abf4a5413197169fba760ec479.png