I. Initial Clean-Up & Settings – Create MS from registered, unified point cloud > Delete extraneous points and any noise > Save this as Piecing_Base
NOTE: In this example, the original data of a complex interior chilling plant ranged in density from approximately 1cm at the most dense to 10 cm at the least dense. After registration, this data was unified with the medium reduction setting. This resulted in more consistent 2.5 cm spacing in the majority of the data that proved to be manageable in exporting to other formats and software.
II. Set the view to Orthogonal > Viewpoint Tab > Orthogonal
SETTING HORIZONTAL REFERENCE PLANES
A. Open RP dialogue box > Tools > Reference Plane > Add/Edit Reference Plane > Click the visibility box to activate the original, default reference plane (RP); this is usually a horizontally oriented plane that is aligned to the X-Y plane of your data
1. If your data needs to be divided up vertically and horizontally (ie: multiple levels of dense data), double click the default RP and rename it Horiz_Level_001 > follow Step III-B
2. If your data does not need to be divided up vertically (ie: single level of data), move to Step IV
B. Move RF_Horiz_Level_001 to a significant horizontal point in the data > In this example, a reference plane was set on a point on the floor dividing 2 levels > Zoom into the data so that you can see the floor or significant horizontal feature > use Selection tool to select a point on the feature > Tools > RP > Set Plane Origin at Pick Point
CREATE ADDITIONAL HORIZONTAL RP’S
Figure 1 – The Reference Plane dialogue box has been opened and the default reference has been named RP_Horiz_001 and placed on the floor dividing the two levels; Note the main level above the RP and the basement below. This building required only one horizontal plant
Figure 2 (Left) – A closer view of the dialogue box and the options for copying/adding RP’s and for activating the RP
ADDTIONAL REFERENCE PLANES & ESTIMATING DATA SIZE
In this example, the unified point cloud (48,000,000 points) needed to be divided into 300-400 MB pieces in a DXF format to import into REVIT.
Note: Users may find it helpful to adjust the RP’s to match the coordinate system or vice versa; this is covered in the Basic Cyclone Workflow and is not covered here. In this example, features within the scan data (walls and floors) are used to divide the space instead of defined coordinates. IMPORTANT TIP: The medium reduction unified cloud creates exports with a clear ratio between the number of points and the size of the resulting DXF file in which 1 million points roughly creates a 1 megabyte DXF file.
CREATING ADDITIONAL REFERENCE PLANES
A. Create a copy of an existing RP (see figure 2) > Make the new plane active and name it RP_Vertical_001
NOTE: turning off the visibility of RP’s that you are not actively using helps to understand what you’re seeing; this is done in the RP dialogue box
B. Tools > RP > set Vertical_001 to the Y-Z Plane or to the Z-Y Plane depending on the orientation of your data and the direction that you want to grid it > Visually examine the data to see if this standard view aligns to the grid you desire
1. RC anywhere in the area where the toolbars are located > Enable the Viewing Toolbar > Top view while in Orthographic viewing mode allows you to see if the reference plane is aligned to the feature (an interior wall for example) that you are using to divide the data > If the plane is aligned to your data, move to Step D.
2. Note that Cyclone toolbars often hide one another and you may need to pull them into the main viewing area to see all of them
CREATING ADDITIONAL REFERENCE PLANES 2
C. If a standard view or coordinate does not align to the feature, leave the vertical RP in place:
1. Create a fence and copy a piece of the data that contain a vertical feature that runs the direction that want to grid/the direction in which you want to divide the data (here the exterior walls running north-south and east-west are used to divide the data so a corner is copied to a new MS)
CREATING ADDITIONAL REFERENCE PLANES 3
Figure 7 (Left) – Top view in orthographic mode confirms that the planes are perpendicular and have the correct z-direction
3. Select the patches (here there are 2 patches representing the north-south and east-west directions) > Copy > Close/delete the temporary MS
CREATING ADDITIONAL REFERENCE PLANES 4
Note: The use of a temporary MS to create the patches allows the unified point cloud in the base to remain as a single cloud; when an object such as a patch is created, the points are automatically deleted and if you choose to insert a copy of the deleted points, they are individual sub-set point clouds resulting in undesired multiple clouds in the base.
5. Select a patch > Confirm that RP_Vertical is active and visible > Tools > RP > Set on object > Activate the top view to confirm that the RP is now aligned to the wall/feature
6. Copy/add a vertical RP for each patch/direction > Turn off the visibility of the layer Patches
CREATING ADDITIONAL REFERENCE PLANES 5
D. Once you have a vertical RP that is aligned to each wall/patch > Create copies of the RP’s and move them to significant points/features in the project that will allow consistently sized pieces (You are basically placing guides by which you will cut the data into pieces)
1. Choose the first direction to grid > Select the vertical RP (RP_Vertical_001) > Confirm it is visible and turn off the visibility of the other RP’s
2. Copy Vertical_001 > Name the new RP Vertical_002 > Make Vertical_002 active
3. Select a point along the direction you are gridding to define the location for Vertical_002
a. Look for regularly occurring features (such as panels on the roof or interior walls/features) to begin placing the RP guides
b. Use the measure tool (Multi-Select 2 points > Tools > Measure > Distance > Point to Point) to further examine the distance between divisions you are considering
CREATING ADDITIONAL REFERENCE PLANES 6
a. The complexity of the data within the section affects the file size of each piece tremendously. It’s a matter of testing and evaluating until you become familiar with the density of your data and find what division/grid size will work
b. NOTE: the goal is to have consistently-sized data evaluated by the number of points/resulting megs; this does not always mean pieces have similarly-sized physical dimensions.
5. Once the point is selected > Tools > RP > Set Plane Origin at Pick Point
CREATING ADDITIONAL REFERENCE PLANES 7
Figure 10 – Top view of the north end of the building; the visibility of the horizontal RP’s has been turned off for clarity. The top green line is the first vertical reference plane (Vertical_001) that was created from the wall/patch. The bottom green line is Vertical_002 that has been moved by selecting a point on the seam between metal panels on the roof. The area between the two RP’s represents Piece_001. This piece/sectional slice will be copied and exported to see if the estimated location for the RP results in an appropriate file size.
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