问想不出如何使Unity正确地缩放

EN

    public RectTransform this_rect;
public float left = 3f;
public float right = 0f;
public float posY = -50f;
public float height = 20f;
public int MaxHealth = 3;
public int currentHealth = 3;
void Update()
{
    this_rect.anchorMin = new Vector2(0, 1);
    this_rect.anchorMax = new Vector2(1, 1);
    Vector2 temp = new Vector2(left, posY - (height / 2f));
    this_rect.offsetMin = temp;
    temp = new Vector3(-right, temp.y + height);
    this_rect.offsetMax = temp;
   // currentHealth = (int)(left + 1 * MaxHealth);
    right = -currentHealth + MaxHealth;

}