Introduction - If you have any usage issues, please Google them yourself
First of all, you should make sure azimuth is said to segment, there is no this site coordinates azimuth measurement . 2. Line azimuth Angle of tangent value y coordinate difference present x coordinate difference. Then compare line end point and the starting point of the size of the x and y coordinates, to judge the which like limits, get the right Angle. 3. Now you meet problem, the azimuth Angle is known, after the eye position, known conditions isn t enough, can t calculate.