Editing Revit setup for OpenBIM/Revit and IFC Geometry
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When Revit exports geometry to IFC, it may process it in a way that may lead to loss of information or inefficient data storage. Optimising geometry is highly advised to maintain quick workflows between OpenBIM and Revit. | When Revit exports geometry to IFC, it may process it in a way that may lead to loss of information or inefficient data storage. Optimising geometry is highly advised to maintain quick workflows between OpenBIM and Revit. | ||
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Within Revit, the currently exported Element ID will be shown in the status bar on the bottom left during the export process. Watching this at export time and making a note of any Element IDs that take a particularly long time to export will help identify those with geometric issues that Revit is struggling with. | Within Revit, the currently exported Element ID will be shown in the status bar on the bottom left during the export process. Watching this at export time and making a note of any Element IDs that take a particularly long time to export will help identify those with geometric issues that Revit is struggling with. | ||
− | As an alternative, the [[ | + | As an alternative, the [[Geometry MicroMVD]] may be used to audit the geometry. It may perform two different checks: the first checks the complexity of the geometric definition in IFC, and the second checks the complexity of the geometry once converted into a mesh. |
− | + | The [[BlenderBIM Add-on]] contains a "Select all high polygon meshes" operator, allowing you to select and visually inspect complex geometry. The IFC CSV tool may then be used to export these objects into a spreadsheet format. | |
==Using IFC4== | ==Using IFC4== | ||
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This filesize reduction occurs due to two improvements in the IFC4 data format. The first is the new tesselated shape supports, which allow a much more efficient description of meshes compared to the IFC2X3 faceted BREPs. The second is due to the improved support in Revit of exporting parametric geometry in IFC. | This filesize reduction occurs due to two improvements in the IFC4 data format. The first is the new tesselated shape supports, which allow a much more efficient description of meshes compared to the IFC2X3 faceted BREPs. The second is due to the improved support in Revit of exporting parametric geometry in IFC. | ||
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==Reducing curves in profiles that are swept, revolved, or blended== | ==Reducing curves in profiles that are swept, revolved, or blended== |