topic Re: multipatch 3D layer floating slightly above base parcel layer in 3D Questions

multipatch 3D layer floating slightly above base parcel layer

JohnMorgan — Thu, 31 May 2012 14:36:12 GMT

Hello,

I have gone through the process of bringing a SketchUp model into ArcScene utilizing Edit Placement on the 3D Editor window. The model appears to have come in great. However, it is floating slightly above my base parcel layer. Is there a way to get the multipatch 3D layer not to float slightly above another layer?

Thanks,
Derek

Re: multipatch 3D layer floating slightly above base parcel layer

JohnMorgan — Thu, 31 May 2012 16:56:06 GMT

Just to follow up the attached image is what it looks like in ArcGlobe. I have even selected Floating on Custom Surface Elevation 30 m and yet it remains hovering above the ground. Any help would be appreciated.

[ATTACH=CONFIG]14808[/ATTACH]

Re: multipatch 3D layer floating slightly above base parcel layer

JeffreySwain — Fri, 01 Jun 2012 12:32:49 GMT

You could use the 3d Editing and hold down the control button after selecting the multipatch and pull it down. It appears that the model was created with a different base than the elevation there. So some manual adjustment may be necessary.

Re: multipatch 3D layer floating slightly above base parcel layer

JohnMorgan — Fri, 01 Jun 2012 14:50:44 GMT

Jeff,

Thanks for this great feedback. I have now fiddled with the method of manual adjustment and it is quite tricky. It seems that there is a delay and then I drag too far and the buildings shoot right through to the other side of the base layer.

However, I was wondering if there was a more specific way to �??snap�?� the bottom portions of the 3D model to the top of an elevation surface. I find your comment about the fact that I may have created the model (multipach) with a different base elevation an interesting point. Perhaps I could go back and create the model with a correct base level. Any recommendation there? The basic steps I have followed are:

1. Matched the 3D model (from SketchUp) to some existing GIS data e.g. parcels
2. Within ArcScene added base (reference) layers City blocks using native projection e.g. NAD 83
3. Within ArcCatalog created a new Multipatch Feature Class making sure that the spatial reference system matches that of your base layers e.g. NAD 83
4. Selectd parcel near the center of the map
5. Select the Insert tool from the construction tools and then browse your Ver. 6 SkethUp Model or Collada file.
6. Using the Move, Scale, and Rotate functions of 3D Editor position your 3D model
7.     Changed the projection of the MultiPatch to WGS 84
8.     Added MultiPatch to ArcGlobe where I experience the floating issues.

Cheers,
Derek