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R
: entered the radius of curve.
The positive value means the road is turning
right, the negative value means left.
Arc
: the length of curve, the value should > 0.
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Input the parameter of circular curve
Para
: Input the parameter, the positive value
means turning left, negative value means
turning right.
Start R
: Input the start radius R1
End R
: Input the end radius R2
While one side of the radius is
∞
, for convenience,
user can input 0.
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Input the parameter of transition curve