CREATING PIECES AND EXPORTING DXF’S
A. In Piecing_Base, activate the top view (you may lock the rotation of the view to help create consistent fences > Viewpoint > View Lock > Rotation)
B. Create a fence around the first area marked by RP’s Vertical_001 and Vertical_002 > Copy fenced to new MS
1. Leave a slight overlap beyond the RP to allow later re-assembly of the exports
2. Confirm that nothing is selected before creating the fence; otherwise the entire cloud will copy
Figure 11 – Piece_001 is fenced and copied to a new MS, using the RP’s as guides; note the fence overlaps slightly beyond the RP, capturing redundant points between adjacent pieces for later re-assembly.
ACTIVATE SIDE OR FRONT VIEW
ACTIVATE RP DIALOGUE BOX
D. Activate RP dialogue box > Turn off the visibility of the vertical RP’s > Turn on the visibility of the horizontal RP’s > You should now see the first piece of your data with RP’s to dividing it into more pieces (Suggested MS name Piece_001).
Figure 13 – The top portion of Piece_001 is fenced and copied to a new MS; the green line in the center is RP Horiz_001 showing the division between the two levels
CREAT FENCE AND COPY TO NEW MS
F. In new MS, select piece > Export > Confirm file type is DXF R12 (NOT 2D dxf – currently DXF R12 is the supported format for direct export from Cyclone) > Selected items > Export (Suggested export name Piece_001_A)
NOTE: If Cyclone immediately states “0 objects exported” either the file type is incorrect or the point cloud was not selected before the export command. Check your settings and selection.
G. The number of points is displayed as the export begins. Roughly, when exporting, 1,000,000 points equals a 1 megabyte DXF. Noting this value at the beginning of each export helps you confirm that the resulting imports will be manageable.
1. Even if you have evenly-sized pieces (based on physical measurements) the size of the data in the pieces varies greatly depending on the complexity within each piece. 5 square meters of measured space can have more points than 20 square meters of space depending on what is within that volume (ie: a complicated network of pipes versus an empty room). Taking this into account and watching the exporting figures are essential to figuring out how to divide up your specific project.
2. If the number of points is vastly smaller or larger than the desired file size, delete the MS for the piece > adjust the RP > Copy out the new piece and try again!
i. When the point cloud piece is copied to its own MS, it may be selected and the object info can be displayed. However, this info shows the number of points in the parent point cloud, not the piece. When the export begins, appears to be the first time the accurate number of points in the piece is displayed.
ii. When you name the export file, it always prompts that this file exists and asks if you want to overwrite it; answer yes.
CLOSE EACH MODELSPACE
RENAME YOUR MODELSPACES
Figure 15 – A closer view of the file structure in Cyclone Navigator; the MS for each vertical sectional slice is named Piece_###. The MS and MS View for each horizontal piece (and the resulting .dxf exports) are named Piecing_###_A , B, etc.
You are reading the series: Leica Cyclone 7.1.1 : Suggested Workflow for Data Registration
- Leica Cyclone 7.1.1 : Interface Basics
- Leica Cyclone 7.1.1 : Importing Data into Cyclone
- Leica Cyclone 7.1.1: Registering Scans in Cyclone
- Leica Cyclone 7.1.1: Sub-Dividing Large Point Clouds for Autodesk Applications
- Leica Cyclone 7.1.1: Sub-Dividing Large Point Clouds for Autodesk Applications – Exporting the Data
- Leica Cyclone 7.1.1: Sub-Dividing Large Point Clouds for Autodesk Applications – Final Images from Example