1. 移除计算 3*3 矩阵的逆的函数

2. 优化球机的登陆接口
3. 新增球机的登出接口

HikBallCamera_test.go

@@ -0,0 +1,24 @@
+package HikNetSDK
+
+import "testing"
+
+func TestHIKBallCamera_Login(t *testing.T) {
+	Init()
+	if DvrInit() != 0 {
+		t.Error("Dvr init failed")
+	}
+	Camera := NewHIKBallCamera(BallCamera{
+		Type:     "BuKongQiu",
+		Name:     "布控球",
+		Ip:       "192.168.211.44",
+		Port:     "8000",
+		User:     "admin",
+		Password: "okwy1234",
+		Channel:  1,
+	})
+	State, ErrorCode, ErrorInfo := Camera.Login()
+	if !State {
+		t.Error(ErrorCode, ErrorInfo)
+		return
+	}
+}