https://community.graphisoft.com/t5/Archicad-C-API/3-point-arc/m-p/193008#M6337 <DIV class="actalk-migrated-content">Hello everyone!<BR />I have one question - how to create 3-point(begCoord, midCoordArc, endCoord) circle arc with Geometry module? Or how to calculate center coordinate of this arc without view angle?</DIV> Wed, 02 Aug 2023 19:10:24 GMT Anonymous 2023-08-02T19:10:24Z https://community.graphisoft.com/t5/Archicad-C-API/3-point-arc/m-p/193008#M6337 <DIV class="actalk-migrated-content">Hello everyone!<BR />I have one question - how to create 3-point(begCoord, midCoordArc, endCoord) circle arc with Geometry module? Or how to calculate center coordinate of this arc without view angle?</DIV> Wed, 02 Aug 2023 19:10:24 GMT https://community.graphisoft.com/t5/Archicad-C-API/3-point-arc/m-p/193008#M6337 Anonymous 2023-08-02T19:10:24Z https://community.graphisoft.com/t5/Archicad-C-API/3-point-arc/m-p/193009#M6338 <BLOCKQUOTE>Chartlant wrote:<BR />Hello everyone!<BR /> I have one question - how to create 3-point(begCoord, midCoordArc, endCoord) circle arc with Geometry module? Or how to calculate center coordinate of this arc without view angle?</BLOCKQUOTE> Have you tried Geometry::Circle_3Pt? Tue, 18 Oct 2011 13:41:48 GMT https://community.graphisoft.com/t5/Archicad-C-API/3-point-arc/m-p/193009#M6338 Ralph Wessel 2011-10-18T13:41:48Z https://community.graphisoft.com/t5/Archicad-C-API/3-point-arc/m-p/193010#M6339 It's exactly what I need! Thanks for help! Tue, 18 Oct 2011 15:58:21 GMT https://community.graphisoft.com/t5/Archicad-C-API/3-point-arc/m-p/193010#M6339 Anonymous 2011-10-18T15:58:21Z