topic create O-Blocks in ArcGIS CityEngine Questions https://community.esri.com/t5/arcgis-cityengine-questions/create-o-blocks/m-p/633582#M8443 <HTML><HEAD></HEAD><BODY><SPAN>I am trying to create O-block shaped lots.&nbsp; Basically I am drawing shapes in city engine however i need basically a donut shape.&nbsp; Is there a way to boolean out a shape within a shape.?</SPAN><BR /><BR /><SPAN>thanks</SPAN><BR /><SPAN>jesse</SPAN></BODY></HTML> Wed, 18 Apr 2012 03:24:13 GMT JesseGould 2012-04-18T03:24:13Z create O-Blocks https://community.esri.com/t5/arcgis-cityengine-questions/create-o-blocks/m-p/633582#M8443 <HTML><HEAD></HEAD><BODY><SPAN>I am trying to create O-block shaped lots.&nbsp; Basically I am drawing shapes in city engine however i need basically a donut shape.&nbsp; Is there a way to boolean out a shape within a shape.?</SPAN><BR /><BR /><SPAN>thanks</SPAN><BR /><SPAN>jesse</SPAN></BODY></HTML> Wed, 18 Apr 2012 03:24:13 GMT https://community.esri.com/t5/arcgis-cityengine-questions/create-o-blocks/m-p/633582#M8443 JesseGould 2012-04-18T03:24:13Z Re: create O-Blocks https://community.esri.com/t5/arcgis-cityengine-questions/create-o-blocks/m-p/633583#M8444 <HTML><HEAD></HEAD><BODY><SPAN>1] if subdividing a Block with the Dynamic City Layouts : use the Block Subdivision Type 'Offset Subdivision'</SPAN><BR /><BR /><SPAN>2] if you try doing this via CGA : check the CGA operation called shapeO() in Help &gt; CGA Operations Reference</SPAN><BR /><BR /><SPAN>3] note that CGA does not yet support polygons with holes, thus shapeO creates a 'diagonal line' to split the otherwise closed topology of the shape open.</SPAN></BODY></HTML> Wed, 18 Apr 2012 15:02:19 GMT https://community.esri.com/t5/arcgis-cityengine-questions/create-o-blocks/m-p/633583#M8444 MatthiasBuehler1 2012-04-18T15:02:19Z