Reconstruction of the
2020 Roundway formation |
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1. |
| Draw a circle. Draw and extend the horizontal and vertical centerlines.
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2. |
| Copy circle 1 to its upper intersection with the vertical centerline.
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3. |
| Copy circle 1 to its lower intersection with the vertical centerline.
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4. |
| Draw the connecting line between the righthand intersections of circle 1 with circles 2 and 3.
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5. |
| Construct a "two-points" circle (defined by the two end-points of a centerline) between the righthand intersection of circle 1 and the intersection of line 4 with the horizontal centerline.
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6. |
| Copy circle 5 to the center of circle 1.
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7. |
| Construct a circle concentric to circle 5, tangent to circle 6 at the righthand side.
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8. |
| Construct a circle concentric to circle 7, tangent to circle 6 at the lefthand side.
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9. |
| Copy circle 5 to the lefthand intersection of circle 1 and the horizontal centerline.
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10. |
| Construct a circle centered at the righthand intersection of circle 9 and the horizontal centerline, tangent to circle 8 at the lefthand side.
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11. |
| Construct a circle concentric to circle 10, tangent to circle 7 at the lefthand side.
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12. |
| Copy circle 5 to the upper intersection of circle 6 and the vertical centerline.
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13. |
| Construct a circle concentric to circle 2, tangent to circle 12 at the upper side.
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14. |
| Copy circle 5 to the lower intersection of circle 6 and the vertical centerline.
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15. |
| Construct a circle concentric to circle 3, tangent to circle 14 at the lower side.
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16. |
| Construct a circle concentric to circle 2, tangent to circle 9 at the upper righthand side.
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17. |
| Construct a circle concentric to circle 2, tangent to circle 9 at the lower lefthand side.
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18. |
| Construct a circle concentric to circle 3, tangent to circle 9 at the lower righthand side.
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19. |
| Construct a circle concentric to circle 3, tangent to circle 9 at the upper lefthand side.
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20. |
| Copy circle 5 to the center of circle 2.
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21. |
| Construct a circle concentric to circle 7, tangent to circle 20 at the lower righthand side.
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22. |
| Construct a circle concentric to circle 7, tangent to circle 20 at the upper lefthand side.
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23. |
| Construct a circle concentric to circle 10, tangent to circle 20 at the lower lefthand side.
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24. |
| Construct a circle concentric to circle 10, tangent to circle 20 at the upper righthand side.
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25. |
| Construct a circle centered at the righthand intersection of circles 16 and 18, tangent to circle 23 at the righthand side.
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26. |
| Construct a circle concentric to circle 25, tangent to circle 24 at the righthand side.
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27. |
| Construct a circle centered at the lefthand intersection of circles 16 and 18, tangent to circle 22 at the lefthand side.
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28. |
| Construct a circle concentric to circle 27, tangent to circle 21 at the lefthand side.
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29. |
| Construct a circle concentric to circle 2, tangent to circle 19 at the upper side.
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30. |
| Construct a circle concentric to circle 3, tangent to circle 17 at the lower side.
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31. |
| Circles 2, 3, 7, 8, 10, 11, 13, 15, 16, 17, 18, 19, 21, 22, 23, 24, 25, 26, 27, 28, 29, and 30, are used for the final reconstruction.
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32. |
| Remove all parts not visible within the formation itself.
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33. |
| Colour all areas corresponding to standing...
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34. |
| ...or to flattened crop, and finish the reconstruction of the 2020 Roundway formation.
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35. |
| The final result, matched with the aerial image.
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