https://community.graphisoft.com/t5/Archicad-C-API/How-to-determine-the-angle-at-the-end-of-the-wall/m-p/238978#M3783 <DIV class="actalk-migrated-content">API_WallType has a "poly" property.<BR />But it contains the original polygon of the original wall without taking into account the docking.</DIV> Tue, 04 Oct 2022 14:29:13 GMT Anonymous 2022-10-04T14:29:13Z https://community.graphisoft.com/t5/Archicad-C-API/How-to-determine-the-angle-at-the-end-of-the-wall/m-p/238978#M3783 <DIV class="actalk-migrated-content">API_WallType has a "poly" property.<BR />But it contains the original polygon of the original wall without taking into account the docking.</DIV> Tue, 04 Oct 2022 14:29:13 GMT https://community.graphisoft.com/t5/Archicad-C-API/How-to-determine-the-angle-at-the-end-of-the-wall/m-p/238978#M3783 Anonymous 2022-10-04T14:29:13Z https://community.graphisoft.com/t5/Archicad-C-API/How-to-determine-the-angle-at-the-end-of-the-wall/m-p/238979#M3784 O'h I'm sorry.<BR /> In API guide described API_WallRelation, that contains needed polygon.<BR /> For my aim this code works.<BR /> <BR /> API_Polygon* poly;<BR /> API_WallRelation relData;<BR /> <BR /> poly = &amp;relData.connPoly;<BR /> <BR /> for (j = 1; j &lt;= poly-&gt;nSubPolys; j++) {<BR /> begInd = (*relData.pends)[j - 1] + 1;<BR /> endInd = (*relData.pends)<J>;<BR /> for (i = begInd; i &lt; endInd; i++) {<BR /> begC = (*relData.coords)<I></I><S><I><I></I></I></S>;<BR /> endC = (*relData.coords)[i + 1];<BR /> }<BR /> }</J> Wed, 10 Jul 2019 12:48:28 GMT https://community.graphisoft.com/t5/Archicad-C-API/How-to-determine-the-angle-at-the-end-of-the-wall/m-p/238979#M3784 Anonymous 2019-07-10T12:48:28Z