topic Re: How do I find if a line intersects a closed line (polygon)? in ArcObjects SDK Questions https://community.esri.com/t5/arcobjects-sdk-questions/how-do-i-find-if-a-line-intersects-a-closed-line/m-p/759665#M20135 <HTML><HEAD></HEAD><BODY><BLOCKQUOTE class="jive-quote">ITopologicalOperator</BLOCKQUOTE><BR /><SPAN>Call the Intersect method with esriGeometry0Dimension?</SPAN><BR /><SPAN>Does this take care of the 2D part of the intersection or do I have to strip away any z information first by copying the x and y value of the points?</SPAN></BODY></HTML> Fri, 24 Jan 2014 13:20:46 GMT Andreas_W_Paulsen 2014-01-24T13:20:46Z How do I find if a line intersects a closed line (polygon)? https://community.esri.com/t5/arcobjects-sdk-questions/how-do-i-find-if-a-line-intersects-a-closed-line/m-p/759663#M20133 <HTML><HEAD></HEAD><BODY><SPAN>I have one closed Polyline: "rectangle" and an open Polyline: "line".</SPAN><BR /><SPAN>Both Polylines may be Z aware.</SPAN><BR /><SPAN>What is the best way to find if the "line" intersects the "rectangle" in the XY plane?</SPAN><BR /><SPAN>That is I want a 2D (XY) test for intersection. I do not need the actual coordinates of any intersection(s).</SPAN></BODY></HTML> Fri, 24 Jan 2014 13:04:07 GMT https://community.esri.com/t5/arcobjects-sdk-questions/how-do-i-find-if-a-line-intersects-a-closed-line/m-p/759663#M20133 Andreas_W_Paulsen 2014-01-24T13:04:07Z Re: How do I find if a line intersects a closed line (polygon)? https://community.esri.com/t5/arcobjects-sdk-questions/how-do-i-find-if-a-line-intersects-a-closed-line/m-p/759664#M20134 <HTML><HEAD></HEAD><BODY><SPAN>ITopologicalOperator</SPAN></BODY></HTML> Fri, 24 Jan 2014 13:16:56 GMT https://community.esri.com/t5/arcobjects-sdk-questions/how-do-i-find-if-a-line-intersects-a-closed-line/m-p/759664#M20134 LeoDonahue 2014-01-24T13:16:56Z Re: How do I find if a line intersects a closed line (polygon)? https://community.esri.com/t5/arcobjects-sdk-questions/how-do-i-find-if-a-line-intersects-a-closed-line/m-p/759665#M20135 <HTML><HEAD></HEAD><BODY><BLOCKQUOTE class="jive-quote">ITopologicalOperator</BLOCKQUOTE><BR /><SPAN>Call the Intersect method with esriGeometry0Dimension?</SPAN><BR /><SPAN>Does this take care of the 2D part of the intersection or do I have to strip away any z information first by copying the x and y value of the points?</SPAN></BODY></HTML> Fri, 24 Jan 2014 13:20:46 GMT https://community.esri.com/t5/arcobjects-sdk-questions/how-do-i-find-if-a-line-intersects-a-closed-line/m-p/759665#M20135 Andreas_W_Paulsen 2014-01-24T13:20:46Z Re: How do I find if a line intersects a closed line (polygon)? https://community.esri.com/t5/arcobjects-sdk-questions/how-do-i-find-if-a-line-intersects-a-closed-line/m-p/759666#M20136 <HTML><HEAD></HEAD><BODY><SPAN>From the docs:</SPAN><BR /><BLOCKQUOTE class="jive-quote"> If the Geometry includes z or m values, the z or m domains, z or m resolutions,&nbsp; and z or m cluster tolerance properties must also be defined. The cluster&nbsp; tolerance and resolutions can be quickly and easily set using SetDefault methods&nbsp; on ISpatialReferenceResolution and ISpatialReferenceTolerance interfaces. </BLOCKQUOTE></BODY></HTML> Fri, 24 Jan 2014 13:42:10 GMT https://community.esri.com/t5/arcobjects-sdk-questions/how-do-i-find-if-a-line-intersects-a-closed-line/m-p/759666#M20136 LeoDonahue 2014-01-24T13:42:10Z Re: How do I find if a line intersects a closed line (polygon)? https://community.esri.com/t5/arcobjects-sdk-questions/how-do-i-find-if-a-line-intersects-a-closed-line/m-p/759667#M20137 <HTML><HEAD></HEAD><BODY><SPAN>If you do not need the actual coordinates of any intersection(s) as you said, you can also use IRelationalOperator methods to test the spatial relation between geometries.</SPAN></BODY></HTML> Fri, 24 Jan 2014 21:33:18 GMT https://community.esri.com/t5/arcobjects-sdk-questions/how-do-i-find-if-a-line-intersects-a-closed-line/m-p/759667#M20137 WeifengHe 2014-01-24T21:33:18Z