Given Methods for Polylines and Points

[glandorf]

Hi,

It's been a few years since I've worked intensively with .net and Autocad. However, I have now been asked to programme a new function and need some help with the available methods.

The function should query two points on a 3Dpolyline or normal polyline and construct a point in between depending on a distance from the first point.

Are there functions that I can use here, e.g. to determine the polyline under the first point, to check whether the second point lies on the identical polyline and to determine the coordinates of the new point?

[_gile · Accepted solution]

Hi,

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@glandorf wrote:

The function should query two points on a 3Dpolyline or normal polyline and construct a point in between depending on a distance from the first point.

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Have a look at Curve.GetDistAtPoint and Curve.GetPointAtDist methods.

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@glandorf wrote:

Are there functions that I can use here, e.g. to determine the polyline under the first point, to check whether the second point lies on the identical polyline and to determine the coordinates of the new point?

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You can check if the supplied point IsEqualTo  the  one returned by Curve.GetClosestPointTo.

[glandorf]

Thank you very much. It worked.

I knew there were some functions like that, but had no idea that I could handle all polyline types with the Curve class.

[_gile]

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@glandorf wrote:

I had no idea that I could handle all polyline types with the Curve class.

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You have to understand inheritance. All Polyline types but also Lin, Arc, Circle Ellipse, Spline, ... derive from the Curve class.