Wednesday, 27 July 2011

Cut families with an unattached void

New in 2012 is that in a project file you can cut families with a void. This can be done by using the generic model face based family template.

Families that can be cut are:

  • Walls
  • Roofs
  • Floors
  • Ceilings
  • Structural families
  • Generic families

Opening 1 = hosted at the bottom face of the floor
Opening 1 cuts the wall the floor and the beam

Opening 2 = hosted at the bottom face of the floor
Opening 2 cuts the wall the  and the floor.The beam is joined with the floor and therefor it adds a piece of beam where there is no floor

Opening 3 = hosted at the top face of the floor

The trick to this family is in the following setting and

the void is not allowed to cut the placeholder geometry!

You can schedule these families with a multi-category schedule. Make sure that you use shared parameters.

filter by category --> Generic Models

Friday, 15 July 2011

Photofly (123catch) to Revit

Recently I have been tinkering with Photofly. Nowaday called 123catch The cool thing is that you can get your photoscene into Revit 2012. So I decided to go to an old part of Dordrecht and try to capture a scene and see how I can fit in a new building.

the Photofly scene

Photofly can export to several file formats.
  • dwg but that doesn't seem to work atm
  • obj very usable to get your data into 3D studio
  • las this is a point cloud format ( Revit can turn this into a pcg)
  • rzi format is used by the Autodesk Image Modeler and the Photo Scene Editor for Project Photofly.
Revit will create a pcg file from a las. Next you have to insert the pcg file. When you insert the pcg Revit will ask you how to import. I defined a world coordinate system in Photofly so I imported origin to origin. This doesn't seem to work just yet.

Unfortunately Revit can't import fbx files just yet...
The realy nice thing from Revit 2012 is that it will let me recognize surfaces in the pointcloud. 

Next I am using the pointcloud to approximate the location of the floors extends. (purple lines)

and the finished floor ofcourse

Next I add some more building elements. While modelling in Revit I can check the neighboring house whether the design will aesthetically fit in it's surroundings. With only measuring 1 thing and shooting a whole lot of pictures I think I could already make an estimate of square meters with a margin of 5 to 10% accuracy. 

See the video's I created from the scene

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