Straight Lines Only

Use this function to convert an arc into a series of straight-line elements with the same geometry as that of the arc.

• This tool sub-divides an arc/circle/polyline/clothoid into a series of straight lines.

• There will be no change in the shape of the entity after sub-division.

• The length of the sub-divided straight lines is determined by the radius, the clothoid parameter, and by the accuracy required.

• The elevation of the converted straight lines will be the same as that of the original arc, circle, polyline, clothoid, etc.

Command prompts for:

1. Select a circle/arc/polyline:

2. Select the arc/circle/polyline, which is to be modified as a continuous polyline with only line elements. The program accepts only one entity.

3. Degree of accuracy <1.00>

4. Enter the accuracy number (a numeric value). The program converts the arc/circle/polyline to polyline, which will be having line elements only.

• 1.0 Very low accuracy.

• 2.0 Very high accuracy.

• 3.0 Half accuracy.

• 4.0 Double accuracy.

The degree of accuracy determines the accuracy to be used when sub-dividing arcs, transition curves, etc.

• The function suggests a default value of 1.00.

• If this value is increased, accuracy is increased and arcs are subdivided into more straight lines.

• Smaller values give fewer lines. Large arcs require greater accuracy than small arcs.

• The Degree of accuracy must therefore be evaluated from case to case.

• Any value from 0.1 to 3.0 can be used.

A circle in plan with a radius of 10.0 m is converted to straight lines:

• 0.1 Very low accuracy.

• 3.0 Very high accuracy.

• 0.5 Half accuracy.

• 2.0 Double accuracy.

Next topic: Terrain Design