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back to boardWe take the lowermost point - O.
The previous point - A, and following - B.
Let q = cos (corner between AO and axis OX)
r = cos (corner between BO and axis OX)
If q < r then ccw
else cw
I got AC!!! Simple but wrong!
Simple test:
3
4 4
1 1
3 5
Your answer is ccw, but correct cw.
Another proof that timus test are weak :( The method which find the lowermost point is right...
But don't use cos & sin, think another way :) MY! solution is simple)
only 6 actions for every Vertex. Don't use sin or cos ....
3
4 4
1 1
3 5=cw?Have you ever seen any clocks? |
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