How calculate polygon dimensions

[NajdALHanahnah]

Dear All

There is a way to calculate polygon dimensions (Side) , if i ma working on ArcObject (Java or .NET) any suggestions  ...

especially with complex polygon

Thanks

[DanPatterson_Retired]

I think the term is "perimeter" that you are looking for.  Did you do a search using    arcobjects perimeter  first?

[NajdALHanahnah]

Dear Mr.Dan

I am not looking for perimeter  i am looking for dimensions for each side ...

see what i meant >>>

[nicogis]

you can see code in this link : IPolygon4.ExteriorRingBag Property (ArcObjects .NET 10 SDK)‌

in this code when you loop on points you can get distance from point(i) to point(i+1) ...

[nicogis]

... if your polygons are composed from only lines ...

[RiyasDeen]

Below my suggestion, never implemented this scenario personally before just a possible solution

• Cast your polygon to ISegmentCollection
• Iterate through each segment
• Use ReturnTurnDirection ArcObjects 10 .NET SDK Help‌ on your segments
• If No Turn returned ArcObjects 10 .NET SDK Help then sum your segment length
• Whenever there is a turn break your summation and restart
• At the end you loop you would have got your dimensions.

[NajdALHanahnah]

Thanks Riyas for your post ,  i saw what you put and really interesting idea , but how i can do that in coding level , if

you have any idea plz help me ...thanks 

[RiyasDeen]

Hi Najd,

Try below code.

Note: Even if there is a suttle change in direction between segments (i.e. not exactly 180 degree), it'll be treated as change and gets counted as different section.

Do post back if this worked.

                        ISegmentCollection segments = (ISegmentCollection)lta.Shape;
                        List<double> dimensions = new List<double>();
                        if (segments != null)
                        {
                            double length = 0;
                            for (int idx = 0; idx < segments.SegmentCount; idx++)
                            {
                                ISegment currentSegemnt = segments.get_Segment(idx);

                                if (idx + 1 < segments.SegmentCount)
                                {
                                    ISegment otherSegment = segments.get_Segment(idx + 1);


                                    if (currentSegemnt.ReturnTurnDirection(otherSegment) != 1)
                                    {
                                        dimensions.Add(length);
                                        length = 0;
                                    }
                                }
                                else
                                {
                                    dimensions.Add(length);
                                }
                            }
                        }

[NajdALHanahnah]

Hi Riyas

Thanks for your post , really appropriate that m, let me test it today and i will give you the feedback ...

thanks