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(0);

            //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