Selecting All Overlapping Polylines

[scluna]

Hi,

Does anyone knows how querying drawing using autocad api (.net) and selecting all overlapping polygon?

Please refer to attached picture of overlapping polyline.

Thanks and regards

[SENL1362 · Accepted solution]

Get inspired by Regions and their methods to identify points inside them. Credits to Tony.
http://forums.autodesk.com/t5/NET/Find-entities-in-region/m-p/4772867#M38830

Start with boundary min/max point test against each other .
Then when the inside tests are positive continue with their actual vertices.

[scluna]

Hi,

Is there another method to do this. Although the scripts does the job it is too slow beacuse I will need to convert polyline to region and get all points /vertices of each polyline I will compare with the region?

There is a method I saw GetLineContainment, but I am not familiar with how to use it.

Thanks and regards,

[SENL1362]

the alternative i know of is to do the math your self, ie. calc the in/outside status of vertices within closed area's.
sorry.

[scluna]

I see. The link you gave is quite helpful.

Thank you and regards.