Modeling
About Archicad's design tools, element connections, modeling concepts, etc.

Transparency Problem Tracing Point Clouds in Section

RGGPhnx
Participant

We are trying to model a building from point cloud data. The project requires some extreme accuracy for the exact position of walls and other elements in 3D.  We do this in part by moving section cuts around and comparing how the point cloud matches up with element outlines. 

 

Unfortunately, it appears that it is not possible to make modeled walls and slab elements transparent? The actual feature boundaries from LIDAR data show up quite well due to the density of the points and their going to white at the surface, However, if, say, a wall is inside the measured surface, there is no problem, as we can see we are off-line - but if it is OUTSIDE the surface, the lack of a transparent background covers up the boundary we need to see in the point cloud. 

 

I have already tried:

  • Setting up graphic overrides making ALL fills of any type transparent
  • Making sure the "Transparency" box in Section Settings is checked
  • Overriding cut fill pens in the object and setting background pen to null
  • Overriding cut full pens in Section Settings to make background pen null
  • Changning composite sections to single material, and making it a transparent material such as glass, and object surfaces to glass

Searching the forum, I have found tips to achieve transparency of cut elements in section - and by doing some of the above, I can make it transparent with CONVENTIONAL objects, such as a cabinet or an automobile located behind the element. But NOT with a point cloud.   Isn't a point cloud just converted to another object? Seems like it should work, but I don't know if I'm just doing something wrong.

 

Examples: wall covering points, them moved 1' left so you can see what it was covering (It's only green because it's selected).

Point Cloud Example 1.png   Point Cloud Example 2.png

Bob Graham

Motley Design Group - Phoenix

 

2 REPLIES 2
Nurbs
Advocate

Hi,

Try to set the relevant layers (e.g. Wall) to wireframe. then you got a better control in 3D views

Wireframe.png

 

AC16 - AC aktuelll , WIN 10

That is what Trace-Reference is for. Set up different views from the same checkup section marker/s, with layer combinations showing model only and point cloud only, and trace-reference between them with the transparency button (don't show fills) on (also color, flip display order, intensity, splitter) .