Animation Parameter

【Animation Parameter】

　　Animation Parameters are variables that are defined within the animation system but can also be accessed and assigned values from scripts.

　　Animation Parameters 是Animator Controller中的用户自定义变量，script可以获取和设置其值，其值也可以作为transition转换的条件。配置界面如下：

　　

　　有四种类型的Parameter可选：

　　

　　Parameter可以作为transition的判定条件：

　　

　　script访问parameter的示例如下：

 using UnityEngine;
 using System.Collections;

 public class AvatarCtrl : MonoBehaviour {

     protected Animator animator;

     public float DirectionDampTime = .25f;

     void Start ()
     {
         animator = GetComponent<Animator>();
     }

     void Update ()
     {
         if(animator)
         {
             //get the current state
             AnimatorStateInfo stateInfo = animator.GetCurrentAnimatorStateInfo();

             //if we're in "Run" mode, respond to input for jump, and set the Jump parameter accordingly.
             if(stateInfo.nameHash == Animator.StringToHash("Base Layer.RunBT"))
             {
                 if(Input.GetButton("Fire1"))
                     animator.SetBool("Jump", true );
             }
             else
             {
                 animator.SetBool("Jump", false);
             }

             float h = Input.GetAxis("Horizontal");
             float v = Input.GetAxis("Vertical");

             //set event parameters based on user input
             animator.SetFloat("Speed", h*h+v*v);
             animator.SetFloat("Direction", h, DirectionDampTime, Time.deltaTime);
         }
     }
 }

　　综上所述，Animation Parameter是一个script可写，transition可读的控制变量。

参考：file://localhost/Applications/Unity/Unity.app/Contents/Documentation/Documentation/Manual/AnimationParameters.html