The black dots are in correct position, but the line segments are drawn way off. <img width="541" alt="Screenshot 2019-07-30 at 13 54 43" src="https://user-images.githubusercontent.com/914822/62123920-ab199400-b2d1-11e9-97de-dc85789fb2bd.png">
The black dots are in correct position, but the line segments are drawn way off.